Vertical Aerospace (EVTL) F-1 18 Jan 22 Registration statement (foreign) Financial data

Document and Entity Information

Document and Entity Information	6 Months Ended
	Jun. 30, 2021
Document and Entity Information [Abstract]
Document Type	F-1
Entity Registrant Name	Vertical Aerospace Ltd.
Entity Central Index Key	0001867102
Amendment Flag	false
Entity Emerging Growth Company	true
Entity Ex Transition Period	false

Consolidated Interim Statement

Consolidated Interim Statement of Comprehensive Income - GBP (£) £ in Thousands	6 Months Ended		12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020	Dec. 31, 2019
INCOME STATEMENT ABSTARCT
Revenue	£ 66	£ 49	£ 87	£ 70
Cost of sales	(25)	(25)	(44)	(66)
Gross profit	41	24	43	4
Research and development expenses	(7,747)	(5,071)	(9,971)	(5,153)
Administrative expenses	(7,151)	(1,997)	(3,760)	(2,554)
Related party administrative expenses	(127)	(72)	(144)	(144)
Expense recognized on issue of Z shares at below fair value	(16,739)
Other operating income	9,686		2,317	399
Operating loss	(22,037)	(7,116)	(11,515)	(7,448)
Finance costs	(37)	(59)	(98)	(66)
Related Party finance costs	(483)		(709)
Total finance costs	(520)	(59)	(807)	(66)
Loss before tax	(22,557)	(7,175)	(12,322)	(7,514)
Income tax benefit/(expense)			(4)	30
Net loss for the period and total comprehensive loss	£ (22,557)	£ (7,175)	£ (12,326)	£ (7,484)
Basic loss per share	£ (209.37)	£ (71.75)	£ (123.26)	£ (74.84)
Diluted loss per share	£ (209.37)	£ (71.75)	£ (123.26)	£ (74.84)

Consolidated Interim Statemen_2

Consolidated Interim Statement of Financial Position - GBP (£)	Jun. 30, 2021	Dec. 31, 2020	Jun. 30, 2020	Dec. 31, 2019	Dec. 31, 2018
Non-current assets
Property, plant and equipment	£ 1,407,000	£ 1,422,000		£ 1,545,000	£ 59,000
Right of use assets	991,000	1,062,000		1,202,000
Intangible assets	2,211,000	2,030,000		2,060,000	31,000
Non-current assets	4,609,000	4,514,000		4,807,000
Current assets
Trade and other receivables	11,233,000	3,532,000		1,470,000
Cash and cash equivalents	17,144,000	839,000	£ 1,516,000	1,029,000	272,000
Current assets	28,377,000	4,371,000		2,499,000
Total assets	32,986,000	8,885,000		7,306,000
Equity
Share capital	1.34	1.05		1.05
Share premium	25,739,000
Net parent investment				4,162,000
Other reserves	4,117,000	4,117,000
Accumulated deficit	(27,536,000)	(5,055,000)
Total equity	2,320,000	(938,000)	£ 4,242,000	4,162,000	£ 643,000
Non-current liabilities
Long term lease liabilities	793,000	846,000		947,000
Provisions	91,000	88,000		83,000
Non-current liabilities	884,000	934,000		1,554,000
Trade and other payables				524,000
Current liabilities
Current portion of long term lease liabilities	175,000	175,000		219,000
Trade and other payables	4,607,000	2,401,000		1,371,000
Loans from related parties		6,309,000
Income tax liability		4,000
Convertible notes	25,000,000
Current liabilities	29,782,000	8,889,000		1,590,000
Liabilities	30,666,000	9,823,000		3,144,000
Total equity and liabilities	£ 32,986,000	£ 8,885,000		£ 7,306,000

Consolidated Interim Statemen_3

Consolidated Interim Statement of Cash Flows - GBP (£) £ in Thousands	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Cash flows from operating activities
Loss for the period	£ (22,557)	£ (7,175)
Adjustments to cash flows from non-cash items
Depreciation and amortization	330	251
Depreciation on right of use assets	70	70
Finance costs	37	59
Related party finance costs	483
Share based payment transactions	76
Expense recognized on issue of Z shares at below fair value	16,739
Adjustments to cash flows from non-cash items	(4,822)	(6,795)
(Increase)/decrease in trade and other receivables	(7,654)	619
Increase/(decrease) in trade and other payables	2,160	(302)
Cash generated from operations	(10,316)	(6,478)
Income taxes paid	(4)
Net cash flows used in operating activities	(10,320)	(6,478)
Cash flows from investing activities
Acquisitions of property plant and equipment	(147)	(44)
Acquisition of intangible assets	(349)	(159)
Net cash flows used in investing activities	(496)	(203)
Cash flows from financing activities
Proceeds from related party borrowings	2,208
Proceeds from issue of convertible notes	25,000
Payments to finance lease creditors	(87)	(87)
Movement in net parent investment		7,255
Net cash flows generated from financing activities	27,121	7,168
Net increase in cash and cash equivalents	16,305	487
Cash and cash equivalents at January 1	839	1,029
Cash and cash equivalents at June 30	£ 17,144	£ 1,516

Consolidated Interim Statemen_4

Consolidated Interim Statement of Changes in Equity - GBP (£)	Share premium.	Net parent investment	Other reserves	Accumulated deficit	Total
Balance at the beginning at Dec. 31, 2018		£ 643,000			£ 643,000
Total comprehensive loss		(7,484,000)			(7,484,000)
Movement in net parent investment		11,003,000			11,003,000
Balance at the end at Dec. 31, 2019		4,162,000			4,162,000
Total comprehensive loss		(7,175,000)			(7,175,000)
Movement in net parent investment		7,255,000			7,255,000
Balance at the end at Jun. 30, 2020		4,242,000			4,242,000
Balance at the beginning at Dec. 31, 2019		4,162,000			4,162,000
Total comprehensive loss		(7,175,000)		£ (5,151,000)	(12,326,000)
Share based payment transactions				96,000	96,000
Movement in net parent investment		7,130,000			7,130,000
Balance at the end at Dec. 31, 2020			£ 4,117,000	(5,055,000)	(938,000)
Transfer to Other reserves		£ (4,117,000)	4,117,000
Total comprehensive loss				(22,557,000)	(22,557,000)
New share capital subscribed	£ 9,000,000				9,000,000
Share based payment transactions	16,739,000			76,000	16,815,000
Balance at the end at Jun. 30, 2021	£ 25,739,000		£ 4,117,000	£ (27,536,000)	£ 2,320,000

General information

General information	6 Months Ended	12 Months Ended
	Jun. 30, 2021	Dec. 31, 2020
General information
General information	1 Vertical Aerospace Group Ltd (the “Company” or the “Group” if together with its subsidiaries) is a private company limited by share capital, incorporated and domiciled in UK. The address of its registered office is: 140-142 Kensington Church Street Principal activities The principal activity of the Company and its wholly owned subsidiary, Vertical Advanced Engineering Ltd (“VAEL”), is the development and commercialization of vertical take-off and landing electrically powered aircraft (‘eVTOL’). The Group’s main operations are in the United Kingdom. Prior to the Company’s formation, the principal activities of the Group were carried out by Imagination Industries Aero Ltd (“IIAL”) (formerly Vertical Aerospace Ltd), an entity indirectly but wholly owned by the Founder through an investment in Imagination Industries Ltd (“IIL”).	1 General information Vertical Aerospace Group Ltd (“VAGL”, the “Company”, or the “Group” if together with its subsidiaries) is a private company limited by share capital, incorporated and domiciled in UK formed and fully capitalized in May 2020 by Stephen Fitzpatrick (the “Founder”). The address of its registered office is: 140-142 Kensington Church Street London W8 4BN United Kingdom These financial statements were authorised for issue by the Management Board on July 9, 2021, except with respect to the matters that raise substantial doubt about the Company’s ability to continue as a going concern discussed in Note 2, as to which the date is September 20, 2021. Principal activities The principal activity of the Company and its wholly owned subsidiary, Vertical Advanced Engineering Ltd (“VAEL”), is the development and commercialization of vertical take-off and landing electrically powered aircraft (‘eVTOL’). The Group’s main operations are in the United Kingdom. Prior to the Company’s formation, the principal activities of the Group were carried out by Imagination Industries Aero Ltd (“IIAL”) (formerly Vertical Aerospace Ltd), an entity indirectly but wholly owned by the Founder through an investment in Imagination Industries Ltd (“IIL”).

Significant accounting policies

Significant accounting policies	6 Months Ended	12 Months Ended
	Jun. 30, 2021	Dec. 31, 2020
Significant accounting policies
Significant accounting policies	2 Presentation of these financial statements The consolidated interim financial statements of the Group have been prepared in accordance with International Financial Reporting Standards (“IFRS”) as issued by the International Accounting Standards Board (“IASB”) and reflect the historical operations of the Vertical Aerospace business further to the corporate reorganization as described below. In July 2020 IIAL, transferred all of its operations and substantially all of its net assets to VAGL (the “Vertical Aerospace Net Assets”), and in February 2021 IIAL transferred its investment in VAEL to VAGL (together, the “Reorganization”). Prior to the transfer VAGL only engaged in activities incidental to its formation. The Reorganization has been considered as a reorganization under common control for the purpose of the preparation of these consolidated financial statements and resulted in the Vertical Aerospace Net Assets being recognised by VAGL at their historical net book values. Following the transfer IIAL changed its name to Imagination Industries Aero Ltd (together with IIL, the “Parent Group”) as its remaining net assets were no longer related to or included in the Vertical Aerospace business. Through the Reorganization as described above, the Company’s principal activities became the development and commercialization of eVTOL aircraft following the contribution of the Vertical Aerospace Net Assets, and the Company became the parent of VAEL. Accordingly, the consolidated financial statements were prepared as if the Reorganization had been completed prior to the earliest period presented (except for the acquisition of VAEL which was acquired by IIAL in July 2019 as discussed in note 14 Business combinations of the consolidated financial statements for the year ended December 31, 2020) using the historical book values of IIAL. Prior to the Reorganization the Vertical Aerospace Net Assets had not presented standalone financial statements, and, as a result, financial information for the period up to July 2020 were derived from IIAL’s historical financial records as if the Vertical Aerospace Net Assets (including VAEL from July 2019) had been a standalone business. Accordingly, the financial information for that period is shown on a carve-out basis to present the results of operations. 2 All transactions and balances between the Vertical Aerospace Net Assets and the Parent Group during the period prior to July 2020 which were not historically settled in cash, were considered to be effectively settled in cash in the consolidated financial statements at the time the transaction was recorded. The total net effect of the settlement of these transactions between the Vertical Aerospace Net Assets and the Parent Group are reflected in the Consolidated statement of cash flows as Movement in net parent investment in financing activity, and in the Consolidated statement of financial position and Statement of changes in equity as Net parent investment. During the period prior to July 2020, the Group’s equity balance represented the excess of total assets over total liabilities and was recorded within the account Net parent investment. Net parent investment represents the cumulative financing by the Parent Group and the Founder in the Vertical Aerospace Net Assets through to the Reorganization. In connection with the Reorganization the Net parent investment balance was reclassified to Other reserves. The legal form of such financing to IIAL during the period prior to July 2020 was an intercompany loan from IIL which was not included in the Vertical Net Assets, as such no interest expense related to the loan is recognized in these consolidated financial statements. Assets and liabilities that were specifically identifiable or attributable to the Vertical Aerospace Net Assets have been included in the carve-out financial information, in addition to the assets and liabilities of VAEL after its acquisition in July 2019. The deferred consideration related to the VAEL acquisition with a fair value of £820,000 at the date of acquisition has been reflected in the carve-out financial information up to July 2020. The outstanding deferred consideration balance at July 2020 with a fair value of £542,000 at that date was not included in the Vertical Aerospace Net Assets, and is treated as an increase to Net Parent Investment immediately prior to the reclassification to Other reserves. The carve-out financial information also includes all income and expenses incurred by IIAL up to July 2020 as management believes this to be a reasonable representation, however it may not reflect the income and expenses that would have been incurred if the Vertical Aerospace Net Assets operated as an independent business for the period prior to the Reorganization. Basis of preparation These condensed unaudited consolidated interim financial statements for the six months ended June 30, 2021 have been prepared in accordance with IAS 34 Interim Financial Reporting as issued by the IASB, and should be read in conjunction with the Group’s last annual consolidated financial statements for year ended December 31, 2020. They do not include all of the information required for a complete set of financial statements prepared in accordance with IFRS Standards. However selected explanatory notes are included to explain events and transactions that are significant to an understanding of the changes in the Group’s consolidated financial position and consolidated performance since the last annual financial statements. These condensed unaudited consolidated interim financial statements were authorized for issue by the Management Board on September 20, 2021. Items included in the financial statements are measured using the currency of the primary economic environment in which the entity and its subsidiaries operate (‘the functional currency’). The financial statements are presented in pounds sterling (‘£’ or ‘GBP’), which is the Group’s functional and presentation currency. Going concern Management has prepared a cash flow forecast for the Group and has considered the ability for the Group to continue as a going concern for the foreseeable future, being at least 12 months after approving these financial statements. ​ 2 The Group is currently in the research and development phase of its journey to commercialization of eVTOL technology. It is generating minimal revenue, has a limited amount of cash on hand and has incurred net losses and net cash outflows from operations since inception. To date, the cash funding for the Group has come from private investors. Since December 31, 2020, the Group has raised £25 million through the issue of convertible notes (see Note 10 Convertible notes) and has also converted a £9 million loan to equity. As of June 30, 2021, the Group had approximately £17,144 thousand of cash and cash equivalents on hand. Prior to the issuance of the consolidated financial statements for the year ended December 31, 2020 in July 2021, management prepared a cash flow model detailing the cash inflows and outflows of the Group and determined that the Group had sufficient cash to fund its activity for a period of 18 months from the date of approval of the financial statements. Subsequent to the July 2021 release of the consolidated financial statements for the year ended December 31, 2020, management increased its investment into research and development activities. The increased activities, including hiring additional engineers and other staff, resulted in increased cash outflows, reducing cash and cash equivalents significantly. The Group is therefore dependent on additional financing for research and development activities and operational activities. Management plans to finance these activities with the proceeds from the contemplated US public listing via a merger with a Special Purpose Acquisition Company (‘SPAC’), which is expected to be completed in the fourth quarter of 2021. The timely realization of the transaction is imperative for the Group’s ability to continue as a going concern. Based on the Group’s cash flow forecast and the need to raise additional capital to finance future operations, management has concluded that there is substantial doubt about the Group’s ability to continue as a going concern. The financial statements have been prepared on a going concern basis and do not include any adjustments to the amounts and classification of assets and liabilities that may be necessary in the event the Group can no longer continue as a going concern. Summary of significant accounting policies and key accounting estimates The accounting policies applied in these condensed unaudited consolidated interim financial statements are the same as those applied in the Group’s consolidated financial statements for the year ended December 31, 2020.	2 Significant accounting policies Presentation of these financial statements The consolidated financial statements of the Group have been prepared in accordance with International Financial Reporting Standards (“IFRS”) as issued by the International Accounting Standards Board (“IASB”) and reflect the historical operations of the Vertical Aerospace business further to the corporate reorganization as described below. In July 2020 IIAL transferred all of its operations and substantially all of its net assets to VAGL (the “Vertical Aerospace Net Assets”), and in February 2021 IIAL transferred its investment in VAEL to VAGL (together, the “Reorganization”). Prior to the transfer VAGL only engaged in activities incidental to its formation. The Reorganization has been considered as a reorganization under common control for the purpose of the preparation of these consolidated financial statements and resulted in the Vertical Aerospace Net Assets being recognised by VAGL at their historical net book values. Following the transfer IIAL changed its name to Imagination Industries Aero Ltd (together with IIL, the “Parent Group”) as its remaining net assets were no longer related to or included in the Vertical Aerospace business. Through the Reorganization as described above, the Company’s principal activities became the development and commercialization of eVTOL aircraft following the contribution of the Vertical Aerospace Net Assets, and the Company became the parent of VAEL. Accordingly, the consolidated financial statements were prepared as if the Reorganization had been completed prior to the earliest period presented (except for the acquisition of VAEL which was acquired by IIAL in July 2019 as discussed in note 14 Business combinations) using the historical book values of IIAL. Prior to the Reorganization the Vertical Aerospace Net Assets had not presented standalone financial statements, and, as a result, financial information for the period up to July 2020 were derived from IIAL’s historical financial records as if the Vertical Aerospace Net Assets (including VAEL from July 2019) had been a standalone business. Accordingly, the financial information for that period is shown on a carve-out basis to present the results of operations. 2 Significant accounting policies (continued) All transactions and balances between the Vertical Aerospace Net Assets and the Parent Group during the period prior to July 2020 which were not historically settled in cash, were considered to be effectively settled in cash in the consolidated financial statements at the time the transaction was recorded. The total net effect of the settlement of these transactions between the Vertical Aerospace Net Assets and the Parent Group are reflected in the Consolidated statement of cash flows as Movement in net parent investment in financing activity, and in the Consolidated statement of financial position and Statement of changes in equity as Net parent investment. During the period prior to July 2020, the Group’s equity balance represented the excess of total assets over total liabilities and was recorded within the account Net parent investment. Net parent investment represents the cumulative financing by the Parent Group and the Founder in the Vertical Aerospace Net Assets through to the Reorganization. In connection with the Reorganization the Net parent investment balance was reclassified to Other reserves. Assets and liabilities that were specifically identifiable or attributable to the Vertical Aerospace Net Assets have been included in the carve-out financial information, in addition to the assets and liabilities of VAEL after its acquisition in July 2019. The deferred consideration related to the VAEL acquisition with a fair value of £820,000 at the date of acquisition has been reflected in the carve-out financial information up to July 2020. The outstanding deferred consideration balance at July 2020 with a fair value of £542,000 at that date was not included in the Vertical Aerospace Net Assets, and is treated as an increase to Net Parent Investment immediately prior to the reclassification to Other reserves. The carve-out financial information also includes all income and expenses incurred by IIAL up to July 2020 as management believes this to be a reasonable representation, however it may not reflect the income and expenses that would be been incurred if the Vertical Aerospace Net Assets operated as an independent business for the period prior to the Reorganization. Basis of preparation All intercompany balances and transactions have been eliminated in consolidation. The financial statements have been prepared under historical cost accounting rules, apart from certain financial liabilities which are recognised at fair value. If the Company had derivative financial instruments, these would have been measured at fair value. The preparation of financial statements in conformity with IFRS requires the use of certain critical accounting estimates. It also requires management to exercise its judgement in the process of applying the company’s accounting policies. Items included in the financial statements are measured using the currency of the primary economic environment in which the entity and its subsidiaries operate (‘the functional currency’). The financial statements are presented in pounds sterling (‘£’ or ‘GBP’), which is the Group’s functional and presentation currency and all amounts are presented in and rounded to the nearest thousand unless otherwise indicated. ​ 2 Significant accounting policies (continued) Basis of consolidation Vertical Aerospace Group Ltd is the parent of the Group. Details of the subsidiaries are as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Proportion of ​ ​ ​ ​ ​ ​ ​ ​ ownership ​ ​ ​ ​ ​ ​ ​ ​ interest and ​ ​ ​ ​ ​ ​ ​ ​ voting rights held ​ ​ Name of subsidiary Principal activity Registered office 2020 2019 Vertical Advanced Engineering Ltd Sale of engineering consultancy services 140-142 Kensington Church Street, London, W8 4BN UK 100 % 100 % ​ Summary of significant accounting policies and key accounting estimates The principal accounting policies applied in the preparation of these financial statements are set out below. These policies have been consistently applied to all the years presented, unless otherwise stated. Going concern Management has prepared a cash flow forecast for the Group and has considered the ability for the Group to continue as a going concern for the foreseeable future, being at least 12 months after approving these financial statements. The Group is currently in the research and development phase of its journey to commercialization of eVTOL technology. It is generating minimal revenue, has a limited amount of cash on hand and has incurred net losses and net cash outflows from operations since inception. To date, the cash funding for the Group has come from private investors. Since December 31, 2020, the Group has raised £25m through the issue of convertible notes (see Note 27 Non adjusting events after the reporting period) and has also converted a £9m loan to equity. As of December 31, 2020, the Group had approximately £839 thousand of cash and cash equivalents on hand. Prior to the issuance of the financial statements in July 2021, management prepared a cash flow model detailing the cash inflows and outflows of the Group and determined that the Group had sufficient cash to fund its activity for a period of 18 months from the date of approval of the financial statements. Subsequent to the July 2021 release of the financial statements, management increased its investment into research and development activities. The increased activities, including hiring additional engineers and other staff, resulted in increased cash outflows, reducing cash and cash equivalents significantly. The Group is therefore dependent on additional financing for research and development activities and operational activities. Management plans to finance these activities with the proceeds from the contemplated US public listing via a merger with a Special Purpose Acquisition Company (‘SPAC’), which is expected to be completed in the fourth quarter of 2021. The timely realization of the transaction is imperative for the Group’s ability to continue as a going concern. Based on the Group’s cash flow forecast and the need to raise additional capital to finance future operations, management has concluded that there is substantial doubt about the Group’s ability to continue as a going concern. The financial statements have been prepared on a going concern basis and do not include any adjustments to the amounts and classification of assets and liabilities that may be necessary in the event the Group can no longer continue as a going concern. 2 Significant accounting policies (continued) Changes in accounting policy The Group early adopted the following standards and amendments for the first time from the annual reporting period commencing January 1, 2019: ● Definition of Material — amendments to IAS 1 and IAS 8 ● Definition of a Business — amendments to IFRS 3 ● Interest Rate Benchmark Reform — amendments to IFRS 9, IAS 39 and IFRS 7 ● Revised Conceptual Framework for Financial Reporting The amendments listed above did not have any impact on the amounts recognised in prior periods and are not expected to significantly affect the current or future periods. No new accounting standards and interpretations that have been published and are not mandatory for December 31, 2020 reporting periods have been early adopted by the Group or are expected to have a material impact on the Group in current or future reporting periods. Revenue recognition Revenues are minimal to the Group and are generated from the performance of engineering consultancy services to customers. IFRS 15 deals with revenue recognition and establishes principles for reporting useful information to users of financial statements about the nature, amount, timing and uncertainty of revenue and cash flows arising from an entity’s contracts with customers. IFRS principles are applied using the following 5 step model: 1. Identify the contracts with the customer 2. Identify the performance obligations in the contract 3. Determine the transaction price 4. Allocate the transaction price to the performance obligations in the contract 5. Recognise revenue when or as the entity satisfies its performance obligations The revenue for the Group relates solely to engineering consultancy services and revenue is recognised once the Group has satisfied the performance conditions. The contracts that the Group enters into comprise payments when certain milestones are met. Revenue is recognised at each milestone event and only if the milestone is met. Government grants Government grants are recognised as Other operating income and are recognised in the period when the expense to which the grant relates is incurred. Grants are only recognised when there is a signed grant offer letter or equivalent from the government body and there is reasonable assurance that the Group will be able to satisfy all conditions of the grant. 2 Significant accounting policies (continued) Receivables relating to government grants are presented in Trade and other receivables at their fair value. Research and development expenses Research expenditure is charged to the income statement in the period in which it occurred. Development expenditure is recognised as an intangible asset when it is probable that the project will generate future economic benefit, considering factors such as technological, commercial and regulatory feasibility. Other development expenditure is charged to the income statement in the period in which it occurred. Refer to note 3 Critical accounting judgements and key sources of estimation uncertainty for a discussion on the judgement of this classification. The amounts included in research and development expenses include staff costs for staff working directly on research and development projects and for expenses directly attributable to a research project, excluding software costs. Finance income and costs policy Financing expense comprises interest payable on loans from related parties and is recognised in profit or loss using the effective interest method. Interest income and interest payable is recognised in profit or loss as it accrues, using the effective interest method. Foreign currency transactions and balances Transactions in foreign currencies are initially recorded at the functional currency rate prevailing at the date of the transaction. Monetary assets and liabilities denominated in foreign currencies are retranslated into the respective functional currency of the entity at the rates prevailing on the reporting period date. Non-monetary items carried at fair value that are denominated in foreign currencies are retranslated at the rates prevailing on the initial transaction dates. Non-monetary items measured in terms of historical cost in a foreign currency are not retranslated. Tax The tax expense for the period comprises current tax and deferred tax. Tax is recognised in profit or loss, except that a change attributable to an item of income or expense recognised as other comprehensive income is also recognised directly in other comprehensive income. The current income tax charge is calculated on the basis of tax rates and laws that have been enacted or substantively enacted by the reporting date in the countries where the company operates and generates taxable income. Current tax assets and tax liabilities are offset where the entity has a legally enforceable right to offset and intends either to settle on a net basis, or to realize the asset and settle the liability simultaneously. Deferred tax is provided on temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts used for taxation purposes. The following temporary differences are not provided for: the initial recognition of goodwill; the initial recognition of assets or liabilities that affect neither accounting nor taxable profit other than in a business combination, and differences relating to investments in subsidiaries to the extent that they will probably not reverse in the foreseeable future. The amount of deferred tax provided is based on the expected manner of realization or settlement of the carrying amount of assets and liabilities, using tax rates enacted or substantively enacted at the balance sheet date. 2 Significant accounting policies (continued) Deferred tax assets are recognized only if it is probable that future taxable amounts will be available to utilize those temporary differences and losses. Deferred tax assets and liabilities are offset where there is a legally enforceable right to offset current tax assets and liabilities and where the deferred tax balances relate to the same taxation authority. The Group is the recipient of R&D tax credits in the UK. These tax credits are presented within the other operating income. Property, plant and equipment Property, plant and equipment is stated in the statement of financial position at cost, less any subsequent accumulated depreciation and subsequent accumulated impairment losses. The cost of property, plant and equipment includes directly attributable incremental costs incurred in their acquisition and installation. Depreciation Depreciation is charged so as to write off the cost of assets over their estimated useful lives, as follows: ​ ​ ​ ​ Asset class Depreciation method and rate Leasehold property ​ Straight line over term of lease Computer equipment ​ 3 years straight line Leasehold improvements ​ 5  ​ Intangible assets Intangible assets are carried at cost, less accumulated amortization and impairment losses. Computer software licences acquired for use within the Company are capitalised as an intangible asset on the basis of the costs incurred to acquire and bring to use the specific software. Amortization Amortization is provided on intangible assets so as to write off the cost on a straight line basis, less any estimated residual value, over their expected useful economic life as follows: ​ ​ ​ ​ Asset class Amortization method and rate IT software ​ 3 years straight line ​ Business combinations and goodwill The purchase method is used to account for the acquisition of subsidiaries by the Group. The cost of an acquisition is measured as the fair value of the assets given, equity instruments issued and liabilities incurred or assumed at the date of exchange. Identifiable assets acquired and liabilities and contingent liabilities assumed are measured initially at their fair values on the date of acquisition. The excess of the cost of acquisition over the fair value of the Group’s share of identifiable net assets, including intangible assets acquired, is recorded as goodwill. If the cost of acquisition is less than the fair value of the Group’s share of net assets of the subsidiary acquired, the difference is recognised directly in the income statement. 2 Significant accounting policies (continued) Goodwill is stated at cost, less any accumulated impairment losses. Goodwill is tested annually for impairment or when there are indicators of impairment. Cash and cash equivalents Cash and cash equivalents include cash at bank and in hand. Trade and other receivables Trade receivables are amounts due from customers for services performed in the ordinary course of business. If collection is expected in one year or less (or in the normal operating cycle of the business if longer), they are classified as current assets. If not, they are presented as non-current assets. Trade receivables are recognised initially at the transaction price. They are subsequently measured at amortised cost using the effective interest method, less provision for impairment. A provision for the impairment of trade receivables is established using an expected credit loss model as per the Group’s accounting policy for the impairment of financial assets. Other receivables represent amounts due from parties who are not customers and are measured at amortized cost. Trade and other payables Trade and other payables are obligations to pay for goods or services that have been acquired in the ordinary course of business from suppliers. Accounts payable are classified as current liabilities if payment is due within one year or less (or in the normal operating cycle of the business if longer). If not, they are presented as non-current liabilities. Trade and other payables are recognised initially at the transaction price and subsequently measured at amortized cost using the effective interest method. Borrowings All borrowings are initially recorded at the amount of proceeds received, net of transaction costs. Borrowings are subsequently carried at amortized cost, with the difference between the proceeds, net of transaction costs, and the amount due on redemption being recognised as a charge to the income statement over the period of the relevant borrowing. Borrowings are classified as current liabilities unless the company has an unconditional right to defer settlement of the liability for at least 12 months after the reporting date. Provisions Provisions are recognised when the company has a present obligation (legal or constructive) as a result of a past event, it is probable that the group will be required to settle that obligation and a reliable estimate can be made of the amount of the obligation. Provisions are measured at management’s best estimate of the expenditure required to settle the obligation at the reporting date and are discounted to present value where the effect is material. 2 Significant accounting policies (continued) Leases Definition A lease is a contract, or part of a contract, that conveys the right to use an asset or a physically distinct part of an asset (‘the underlying asset’) for a period of time in exchange for consideration. Further, the contract must convey the right to the company to control the asset or a physically distinct portion thereof. A contract is deemed to convey the right to control the underlying asset, if throughout the period of use, the company has the right to: Obtain substantially all the economic benefits from the use of the underlying asset, and; Direct the use of the underlying asset (eg direct how and for what purpose the asset is used). Initial recognition and measurement The company initially recognizes a lease liability for the obligation to make lease payments and a right-of-use asset for the right to use the underlying asset for the lease term. The lease liability is measured at the present value of the lease payments to be made over the lease term. The lease payments include fixed payments, purchase options at exercise price (where payment is reasonably certain), expected amount of residual value guarantees, termination option penalties (where payment is considered reasonably certain) and variable lease payments that depend on an index or rate. The right-of-use asset is initially measured at the amount of the lease liability, adjusted for lease prepayments, lease incentives received, the company’s initial direct costs (e.g., commissions) and an estimate of restoration, removal and dismantling costs. Subsequent measurement After the commencement date, the company measures the lease liability by: (a) Increasing the carrying amount to reflect interest on the lease liability; (b) Reducing the carrying amount to reflect the lease payments made; and (c) Re-measuring the carrying amount to reflect any reassessment or lease modifications or to reflect revised in substance fixed lease payments or on the occurrence of other specific events. Interest on the lease liability in each period during the lease term is the amount that produces a constant periodic rate of interest on the remaining balance of the lease liability. Interest charges are included in finance costs in the income statement, unless the costs are included in the carrying amount of another asset applying other applicable standards. Variable lease payments not included in the measurement of the lease liability, are included in operating expenses in the period in which the event or condition that triggers them arises. The related right-of-use asset is accounted for using the Cost model in IAS 16 and depreciated and charged in accordance with the depreciation requirements of IAS 16 Property, Plant and Equipment as disclosed in the accounting policy for Property, Plant and Equipment. Adjustments are made to the carrying value of the right of use asset where the lease liability is re-measured in accordance with the above. Right of use assets are tested for impairment in accordance with IAS 36 Impairment of assets as disclosed in the accounting policy in impairment. 2 Significant accounting policies (continued) Short term and low value leases The company has made an accounting policy election, by class of underlying asset, not to recognize lease assets and lease liabilities for leases with a lease term of 12 months or less (i.e., short-term leases). The company has made an accounting policy election on a lease-by-lease basis, not to recognize lease assets on leases for which the underlying asset is of low value. Lease payments on short term and low value leases are accounted for on a straight line bases over the term of the lease or other systematic basis if considered more appropriate. Short term and low value lease payments are included in operating expenses in the income statements. Impairment (non-financial assets) All assets are reviewed for impairment when there is an indicator of impairment. In addition, goodwill is reviewed for impairment at least annually. An impairment loss is recognised whenever the carrying amount of an asset or its cash-generating unit exceeds its recoverable amount. Share capital Ordinary shares are classified as equity. Equity instruments are measured at the fair value of the cash or other resources received or receivable, net of the direct costs of issuing the equity instruments. If payment is deferred and the time value of money is material, the initial measurement is on a present value basis. Defined contribution pension obligation A defined contribution plan is a pension plan under which fixed contributions are paid into a separate entity and has no legal or constructive obligations to pay further contributions if the fund does not hold sufficient assets to pay all employees the benefits relating to employee service in the current and prior periods. For defined contribution plans contributions are paid into publicly or privately administered pension insurance plans on a mandatory or contractual basis. The contributions are recognized as employee benefit expense when they are due. Share based payments Vertical Aerospace Group Ltd operates an equity-settled, share based compensation plan, under which the entity receives services from employees as consideration for equity instruments (share options or shares) of Vertical Aerospace Group Ltd. The fair value of the employee services received in exchange for the grant of the shares is recognised as an expense. The total amount to be expensed is determined by reference to the fair value of the shares granted: ● including any market performance conditions (for example, an entity’s share price); ● excluding the impact of any service and non-market performance vesting conditions (for example, remaining an employee of the entity over a specified time period); and ● including the impact of any non-vesting conditions. 2 Significant accounting policies (continued) Non-market performance and service conditions are included in assumptions about the number of shares that are expected to vest. The total expense is recognized over the vesting period, which is the period over which all of the specified vesting conditions are to be satisfied. In addition, in some circumstances employees may provide services in advance of the grant date and therefore, the grant date fair value is estimated for the purposes of recognizing the expense during the period between service commencement period and grant date. The fair value of ordinary shares in the Group are interpolated from externally set valuations based on investment offers received from third parties (whether accepted or not). In the absence of third party investment offers, internal valuations are used and are benchmarked against third party investment offers when they become available. Further assumptions are applied to the imputed valuations to reflect factors such as lack of marketability and control, including lack of voting rights, where appropriate. At the end of each reporting period, the Group revises its estimates of the number of shares that are expected to vest based on the non-market vesting conditions. They recognize the impact of the revision to original estimates, if any, in the income statement, with a corresponding adjustment to equity. Financial instruments Initial recognition Financial assets and financial liabilities comprise all assets and liabilities reflected in the statement of financial position, although excluding property, plant and equipment, intangible assets, deferred tax assets, prepayments, deferred tax liabilities and employee benefits plan. The company recognizes financial assets and financial liabilities in the statement of financial position when, and only when, the company becomes party to the contractual provisions of the financial instrument. Financial assets are initially recognized at fair value. Financial liabilities are initially recognized at fair value, representing the proceeds received net of premiums, discounts and transaction costs that are directly attributable to the financial liability. All regular way purchases and sales of financial assets and financial liabilities classified as fair value through profit or loss (“FVTPL”) are recognized on the trade date, i.e. the date on which the company commits to purchase or sell the financial assets or financial liabilities. All regular way purchases and sales of other financial assets and financial liabilities are recognized on the settlement date, i.e. the date on which the asset or liability is received from or delivered to the counterparty. Regular way purchases or sales are purchases or sales of financial assets that require delivery within the time frame generally established by regulation or convention in the market place. Subsequent to initial measurement, financial assets and financial liabilities are measured at either amortized cost or fair value. ​ 2 Significant accounting policies (continued) Classification and measurement Financial instruments are classified at inception into one of the following categories, which then determine the subsequent measurement methodology: - I. Financial Assets Financial assets are classified into one of the following three categories: ● financial assets at amortized cost; ● financial assets at fair value through other comprehensive income (FVTOCI); or ● financial assets at fair value through the profit or loss (FVTPL). Criteria for measurement of Financial asset at amortized cost A financial asset is measured at amortized cost if it meets both of the following conditions and is not designated as at FVTPL: ● the assets are held within a business model whose objective is to hold assets in order to collect contractual cash flows; and ● the contractual terms of the financial assets give rise on specified dates to cash flows that are solely payments of principal and interest on the principal amount outstanding. If either of the above two criteria is not met, the financial assets are classified and measured at fair value through the profit or loss (FVTPL). Additionally, if a financial asset meets the amortized cost criteria, the company may choose to designate the financial asset at FVTPL. Such an election is irrevocable and applicable only if the FVTPL classification significantly reduces a measurement or recognition inconsistency. II. Financial liabilities Financial liabilities are classified into one of the following two categories: ● financial liabilities at amortized cost; or ● financial liabilities at fair value through the profit or loss (FVTPL). Financial liabilities at amortized cost All financial liabilities, other than those classified as financial liabilities at FVTPL, are measured at amortized cost using the effective interest rate method. Financial liabilities at fair value through the profit or loss Financial liabilities not measured at amortized cost are classified and measured at FVTPL. The classification of financial instruments is as follows: 2 Significant accounting policies (continued) Amortized cost Derecognition of financial assets and liabilities Financial assets are derecognized when the contractual rights to the cash flow have expired or been transferred together with substantially all risks and rewards. Financial liabilities are derecognized when they are extinguished. Impairment of financial assets Measurement of Expected Credit Losses The company recognises loss allowances for expected credit losses (ECL) on financial instruments that are not measured at FVPTL, namely Trade and other receivables. The company applies the simplified approach, which requires expected lifetime losses to be recognised from initial recognition of the receivables. To measure the expected credit losses, trade receivables have been grouped based on shared credit risk characteristics and the days past due. The expected loss rates are based on the payment profiles of sales over a period of 18 months before 31 December 2020 and the corresponding historical credit losses experienced within this period. The historical loss rates are adjusted to reflect current and forward-looking information on macroeconomic factors affecting the ability of the customers to settle the receivables.

Critical accounting judgements

Critical accounting judgements and key sources of estimation uncertainty	6 Months Ended	12 Months Ended
	Jun. 30, 2021	Dec. 31, 2020
Critical accounting judgements and key sources of estimation uncertainty
Critical accounting judgements and key sources of estimation uncertainty	3 Capitalization of development costs The business incurs a significant amount of research and development cost. The point in time at which the business begins capitalization of any project is a critical accounting judgement. The business assesses the technology readiness level of its research and development projects, along with the commercialization potential and guidance from the accounting standards to assess whether a particular development project should be capitalized or not. Costs for internally generated research and development are capitalized only if: ● the product or process is technically feasible; ● adequate resources are available to successfully complete the development; ● the benefits from the assets are demonstrated; ● the costs attributable to the projects are reliably measured; ● the Group intends to produce and market or use the developed product or process and can demonstrate its market relevance. Management has concluded that for the current and comparative period, none of the projects met the requirements for capitalization. Whilst management recognizes a market for the use of eVTOLs, the market is not yet established or proven. Additionally, the Group is developing new technologies and there are still uncertainties about the successful completion of this development. If costs relating to a research and development project are not capitalized, they are expensed as incurred and presented in Research and development costs in the Income statement.	3 Critical accounting judgements and key sources of estimation uncertainty Capitalization of development costs The business incurs a significant amount of research and development cost. The point in time at which the business begins capitalization of any project is a critical accounting judgement. The business assesses the technology readiness level of its research and development projects, along with the commercialization potential and guidance from the accounting standards to assess whether a particular development project should be capitalized or not. Costs for internally generated research and development are capitalized only if: ● the product or process is technically feasible; ● adequate resources are available to successfully complete the development; ● the benefits from the assets are demonstrated; ● the costs attributable to the projects are reliably measured; ● the Group intends to produce and market or use the developed product or process and can demonstrate its market relevance. Management has concluded that in 2020 and 2019, none of the projects met the requirements for capitalization. Whilst Management recognizes a market for the use of eVTOLs, the market is not yet established or proven. Additionally, the Group is developing new technologies and there are still uncertainties about the successful completion of this development. 3 Critical accounting judgements and key sources of estimation uncertainty (continued) If costs relating to a research and development project are not capitalized, they are expensed as incurred and presented in Research and development costs in the Income statement.

Operating segments

Operating segments	6 Months Ended	12 Months Ended
	Jun. 30, 2021	Dec. 31, 2020
Operating segments
Operating segments	4 The Group operates as a single operating segment and one reporting segment, being the development and commercialization of eVTOL technology. The Chief Operating Decision Maker, being the Chief Executive Officer, reviews all financial information as a single segment.	4 Operating segments The Group operates as a single operating segment and one reporting segment, being the development and commercialization of eVTOL technology. The Chief Operating Decision Maker, being the Chief Executive Officer, reviews all financial information as a single segment.

Revenue

Revenue	6 Months Ended	12 Months Ended
	Jun. 30, 2021	Dec. 31, 2020
Revenue
Revenue	5 The analysis of the company’s revenue for the period from continuing operations is as follows: ​ ​ ​ ​ ​ ​ ​ 2021 2020 ​ ​ £ 000 ​ £ 000 Rendering of engineering consultancy services 66 49 ​	5 Revenue The analysis of the company’s revenue for the year from continuing operations is as follows: ​ ​ ​ ​ ​ ​ ​ 2020 2019 ​ ​ £ 000 ​ £ 000 Rendering of engineering consultancy services 87 70 ​ All revenue is generated within the UK, based on the location where the engineering consultancy are delivered.

Other operating income

Other operating income	6 Months Ended	12 Months Ended
	Jun. 30, 2021	Dec. 31, 2020
Other operating income
Other operating income	6 The analysis of the Group’s other operating income for the period is as follows: ​ ​ ​ ​ ​ ​ ​ 6 months ended 6 months ended ​ ​ June 30, ​ June 30, ​ ​ 2021 ​ 2020 ​ ​ £ 000 ​ £ 000 Government grants 8,999 — R&D tax credit 687 — ​ 9,686 — ​ Government grants At June 30, 2021, the Company had a receivable of £8,943,000 from Aerospace Technology Institute (ATI) relating to the research and development of eVTOL technologies. The grant is made to fund research and development expenditure, and is recognised in the period to which the expense it is intended to fund relates. R&D tax credit scheme The R&D tax credit relates to the UK’s research and development expenditure credit scheme.	6 Other operating income The analysis of the Group’s other operating income for the year is as follows: ​ ​ ​ ​ ​ ​ ​ 2020 2019 ​ ​ £ 000 ​ £ 000 Government grants 1,989 — R&D tax credit 328 399 ​ 2,317 399 ​ Government grants At December 31, 2020, the Group had a receivable of £1,989,000 from Aerospace Technology Institute (ATI) relating to the research and development of eVTOL technologies. The grant is made to fund research and development expenditure, and is recognised in the period to which the expense it is intended to fund relates. The amounts outstanding at December 31, 2020 were received in February 2021. R&D tax credit scheme The R&D tax credit relates to the UK’s research and development expenditure credit scheme.

Expenses by nature

Expenses by nature	6 Months Ended	12 Months Ended
	Jun. 30, 2021	Dec. 31, 2020
Expenses by nature
Expenses by nature	7 Included within administrative expenses and research and development expenses are the following expenses/(income). ​ ​ ​ ​ ​ ​ ​ 6 months ended 6 months ended ​ ​ June 30, ​ June 30, ​ ​ 2021 ​ 2020 ​ ​ £ 000 ​ £ 000 Staff costs excluding share based payments 5,546 3,580 Share based payment expenses 76 — Software costs 497 271 Depreciation expense 162 134 Depreciation on right of use assets – Property 70 70 Amortization expense 168 117 Consultancy costs 1,501 523 Foreign exchange (losses)/gains (16) 26 Expense on short term leases 30 36 Research and development components 2,478 1,909 Related party administrative expenses 127 72 Legal costs 2,060 8 Other administrative expenses 1,574 208 Other research and development costs 625 115 ​ 14,898 7,068 ​	7 Expenses by nature Included within administrative expenses and research and development expenses are the following expenses/(income). ​ ​ ​ ​ ​ ​ ​ 2020 2019 ​ ​ £ 000 ​ £ 000 Staff costs excluding share based payment expenses 8,445 3,642 Share based payment expenses 96 — Software costs 579 191 Depreciation expense 279 89 Depreciation on right of use assets – Property 140 171 Amortisation expense 263 70 Consultancy costs 745 518 Foreign exchange gains/(losses) 26 (6) Expense on short term leases 64 8 Research and development components 2,095 1,933 Related party administrative expenses 144 144 Other administrative expenses 539 929 Other research and development costs 460 163 Total administrative and research and development expenses 13,875 7,851 ​ Staff costs excluding share based payment expenses relates primarily to salary and salary related expenses, including social secuirty and pension contributions. Research and development components represents the amount spent on hardware and testing for building eVTOL prototypes.

Share capital

Share capital	6 Months Ended	12 Months Ended
	Jun. 30, 2021	Dec. 31, 2020
Share capital.
Share capital	8 Allotted, called up and fully paid shares ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ June 30, ​ December 31, ​ ​ 2021 ​ 2020 ​ ​ No. ​ £ ​ No. ​ £ A ordinary of £0.00001 each 123,220 1.23 100,000 1.00 B ordinary of £0.00001 each 4,832 0.05 4,832 0.05 Z ordinary of £0.00001 each 5,804 0.06 — — ​ 133,856 1.34 104,832 1.05 ​ New shares allotted During the period 23,220 A ordinary shares having an aggregate nominal value of £0.2322 were allotted for an aggregate consideration of £9,000,000 and a weighted average fair value per share of £387.60, being the fair value at the time, which was based on investment offers from external third parties received at the time. There were no expected dividends or other features of the shares that needed to be incorporated into the valuation.. The shares were issued to Stephen Fitzpatrick in exchange for releasing a loan due to him. Share premium of £9,000,000 was recognised on issue and there were no transaction costs. On 10 June 2021, in connection with the potential transaction with Broadstone Acquisition Corp., 5,804 Z shares in Vertical Aerospace Group Ltd, having a probability weighted fair value per share of £2,884, were issued to American Airlines, Inc. for a total consideration of £0.06. In return, American Airlines, Inc. entered into certain agreements regarding the ongoing commitment to commercialization of eVTOL technology. The issuance of these shares resulted in an expense being recognized in accordance with IFRS 2 and an increase in share premium of £16,738,000. The Z shares carry full dividend and voting rights. The Z shares only share in other distributions of capital in the event of a combination with a special purpose acquisition company (‘SPAC transaction’). The valuation of the Z shares for the purposes of IFRS 2 was made with reference to the ongoing transaction with Broadstone Acquisition Corp, subject to certain discounts due to restrictions placed on the Z shares and their conversion to shares in the newly formed public company should the SPAC transaction be consummated as intended. Restrictions on the shares include a period of restrictions on sale of the shares in the American Lock Up Agreement, and a call option agreement between Vertical Aerospace Ltd., a Cayman Islands exempted company (“Pubco”), and American Airlines Inc., the Call Option Agreement. A probability adjustment was also made for the value of the shares if the transaction is not consummated as intended. Expected dividends were not incorporated into the valuation. The Call Option Agreement, which was removed from the fair value of the underlying shares granted, had the following inputs: ​ ​ ​ ​ ​ June 10, ​ ​ 2021 Share price at date of grant ($) 9.93 Option strike price ($) 18.00 Expected volatility (%) 75.00 Maximum term to exercise (years) 3 and 4 Risk-free interest rate (%) 0.75 ​	16 Share capital and other reserves Allotted, called up and fully paid shares ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, December 31, ​ 2020 2019 ​ No. £ No. £ A ordinary of £0.00001 each 100,000 1.00 100,000 1.00 B ordinary of £0.00001 each 4,832 0.05 4,832 0.05 ​ 104,832 1.05 104,832 1.05 ​ The 2019 share capital is the deemed share capital based on the structure at December 31, 2020 in line with the treatment of the Reorganization. Refer to note 2 Significant accounting policies. In addition to the allotted shares, a further 25,973 B ordinary shares have been authorized for allotment to fulfil future option exercises. No other shares had been authorized for allotment at December 31, 2020. A ordinary shares have full voting rights, full dividend rights. B ordinary shares have no voting or dividend rights and have rights to capital distribution on liquidation on par with A ordinary shares. Options have been granted to employees to be able to acquire B shares. Refer to note 22 Share-based payments. Other reserves Other reserves comprises capital contributions from shareholders. In 2020, a capital contribution of £4,160,000 arose on the Reorganization. Refer to note 2 Significant accounting policies. ​ 16 Share capital and other reserves (continued) Net parent investment The net parent investment relates to money invested by the parent prior to the transfer of business on July 1, 2020 as described in more detail in note 2 Significant accounting policies. Cash investments of £7,130,000 were received in the 6 months to June 30, 2020 (full year 2019: £11,003,000). On July 1, 2020, in line with the Reorganization accounting, the total balance of £4,160,000 was reclassified to Other reserves.

Loans from related parties

Loans from related parties	6 Months Ended	12 Months Ended
	Jun. 30, 2021	Dec. 31, 2020
Loans from related parties
Loans from related parties	9 On March 10, 2021, the Group agreed to reallocate its debt from Imagination Industries Ltd (a company wholly owned by Stephen Fitzpatrick) to Stephen Fitzpatrick. The loan was released by Stephen Fitzpatrick in exchange for newly issued share capital. Movements on loan balances in the period were as follows: ​ ​ ​ ​ ​ ​ ​ 2021 2020 ​ ​ £ 000 ​ £ 000 As at January 1 6,309 — Amounts advanced 2,945 — Interest charge 483 — Amounts repaid (737) — Conversion to equity (9,000) — As at June 30 — — ​	25 Related party transactions Key management personnel In 2020 and 2019 key management personnel are the CEO and the first line of reporting into the CEO, excluding support staff. There were 3 key management personnel in 2020 (2019: 2). Key management compensation ​ ​ ​ ​ ​ ​ ​ December 31, 2020 December 31, 2019 ​ £ 000 £ 000 Salaries and other short term employee benefits 374 181 Payments to defined contribution pension schemes 39 24 Share-based payments 92 — ​ 504 205 ​ 25 Related party transactions (continued) Summary of other transactions with key management During the year ended December 31, 2020, the Group made payments to key management personnel for consideration for the acquisition of Vertical Advanced Engineering Ltd of £300,000 (2019: £1,019,000). Refer to note 14 Business combinations. Summary of transactions with other related parties During the year ended December 31, 2020, the Group received loan funds from Imagination Industries Ltd of £5,600,000 (2019: £nil). The loan incurred an interest charge at 30% (2019: not applicable) of £709,000 (2019: £nil). As at 31 December 2020, the total balance owed to Imagination Industries Ltd was £6,309,000 (2019: £nil). During the year ended December 31, 2020, Imagination Industries Incubator Ltd charged the Group management fees of £144,000 (2019: £144,000). As at 31 December 2020, the total balance outstanding was £72,000 (2019: £nil). During the year ended December 31, 2020, the Group received funds from Imagination Industries Aero Ltd of £440,000 (2019: £nil). No interest was charged (2019: £nil). During the year £457,000 was repaid (2019: £nil). As at 31 December 2020, the total balance receivable from Imagination Industries Aero Ltd was £17,000 (2019: £nil). During the year ended December 31, 2020, the business of Vertical Aerospace was transferred from Imagination Industries Aero Ltd to the Group for £1. Refer to note 2 Significant accounting policies for further discussion.

Convertible notes

Convertible notes	6 Months Ended
	Jun. 30, 2021
Convertible notes
Convertible notes	10 In March 2021, the Company issued convertible notes resulting in gross proceeds of £25 million. No interest accrues or is payable on the notes. The Company can raise up to a further £50 million in convertible notes without recourse. Issuing notes in excess of £50m requires the consent of the existing noteholders. The notes are convertible in the event of the Company entering a transaction with a special purpose acquisition company (“SPAC”) or any new equity funding raise prior to a SPAC transaction. A SPAC transaction means a merger, capital stock exchange, asset acquisition, stock purchase, reorganization, or similar business combination of the Company by or with a SPAC. The notes convert to A Ordinary Shares in the capital of the Company by reference to the price per security value in the SPAC transaction or new equity fund raise. The notes are redeemable by the Company only by agreement of the noteholders.

Significant accounting polici_2

Significant accounting policies (Policies)	6 Months Ended	12 Months Ended
	Jun. 30, 2021	Dec. 31, 2020
Significant accounting policies
Presentation of these financial statements	Presentation of these financial statements The consolidated interim financial statements of the Group have been prepared in accordance with International Financial Reporting Standards (“IFRS”) as issued by the International Accounting Standards Board (“IASB”) and reflect the historical operations of the Vertical Aerospace business further to the corporate reorganization as described below. In July 2020 IIAL, transferred all of its operations and substantially all of its net assets to VAGL (the “Vertical Aerospace Net Assets”), and in February 2021 IIAL transferred its investment in VAEL to VAGL (together, the “Reorganization”). Prior to the transfer VAGL only engaged in activities incidental to its formation. The Reorganization has been considered as a reorganization under common control for the purpose of the preparation of these consolidated financial statements and resulted in the Vertical Aerospace Net Assets being recognised by VAGL at their historical net book values. Following the transfer IIAL changed its name to Imagination Industries Aero Ltd (together with IIL, the “Parent Group”) as its remaining net assets were no longer related to or included in the Vertical Aerospace business. Through the Reorganization as described above, the Company’s principal activities became the development and commercialization of eVTOL aircraft following the contribution of the Vertical Aerospace Net Assets, and the Company became the parent of VAEL. Accordingly, the consolidated financial statements were prepared as if the Reorganization had been completed prior to the earliest period presented (except for the acquisition of VAEL which was acquired by IIAL in July 2019 as discussed in note 14 Business combinations of the consolidated financial statements for the year ended December 31, 2020) using the historical book values of IIAL. Prior to the Reorganization the Vertical Aerospace Net Assets had not presented standalone financial statements, and, as a result, financial information for the period up to July 2020 were derived from IIAL’s historical financial records as if the Vertical Aerospace Net Assets (including VAEL from July 2019) had been a standalone business. Accordingly, the financial information for that period is shown on a carve-out basis to present the results of operations. 2 All transactions and balances between the Vertical Aerospace Net Assets and the Parent Group during the period prior to July 2020 which were not historically settled in cash, were considered to be effectively settled in cash in the consolidated financial statements at the time the transaction was recorded. The total net effect of the settlement of these transactions between the Vertical Aerospace Net Assets and the Parent Group are reflected in the Consolidated statement of cash flows as Movement in net parent investment in financing activity, and in the Consolidated statement of financial position and Statement of changes in equity as Net parent investment. During the period prior to July 2020, the Group’s equity balance represented the excess of total assets over total liabilities and was recorded within the account Net parent investment. Net parent investment represents the cumulative financing by the Parent Group and the Founder in the Vertical Aerospace Net Assets through to the Reorganization. In connection with the Reorganization the Net parent investment balance was reclassified to Other reserves. The legal form of such financing to IIAL during the period prior to July 2020 was an intercompany loan from IIL which was not included in the Vertical Net Assets, as such no interest expense related to the loan is recognized in these consolidated financial statements. Assets and liabilities that were specifically identifiable or attributable to the Vertical Aerospace Net Assets have been included in the carve-out financial information, in addition to the assets and liabilities of VAEL after its acquisition in July 2019. The deferred consideration related to the VAEL acquisition with a fair value of £820,000 at the date of acquisition has been reflected in the carve-out financial information up to July 2020. The outstanding deferred consideration balance at July 2020 with a fair value of £542,000 at that date was not included in the Vertical Aerospace Net Assets, and is treated as an increase to Net Parent Investment immediately prior to the reclassification to Other reserves. The carve-out financial information also includes all income and expenses incurred by IIAL up to July 2020 as management believes this to be a reasonable representation, however it may not reflect the income and expenses that would have been incurred if the Vertical Aerospace Net Assets operated as an independent business for the period prior to the Reorganization.	Presentation of these financial statements The consolidated financial statements of the Group have been prepared in accordance with International Financial Reporting Standards (“IFRS”) as issued by the International Accounting Standards Board (“IASB”) and reflect the historical operations of the Vertical Aerospace business further to the corporate reorganization as described below. In July 2020 IIAL transferred all of its operations and substantially all of its net assets to VAGL (the “Vertical Aerospace Net Assets”), and in February 2021 IIAL transferred its investment in VAEL to VAGL (together, the “Reorganization”). Prior to the transfer VAGL only engaged in activities incidental to its formation. The Reorganization has been considered as a reorganization under common control for the purpose of the preparation of these consolidated financial statements and resulted in the Vertical Aerospace Net Assets being recognised by VAGL at their historical net book values. Following the transfer IIAL changed its name to Imagination Industries Aero Ltd (together with IIL, the “Parent Group”) as its remaining net assets were no longer related to or included in the Vertical Aerospace business. Through the Reorganization as described above, the Company’s principal activities became the development and commercialization of eVTOL aircraft following the contribution of the Vertical Aerospace Net Assets, and the Company became the parent of VAEL. Accordingly, the consolidated financial statements were prepared as if the Reorganization had been completed prior to the earliest period presented (except for the acquisition of VAEL which was acquired by IIAL in July 2019 as discussed in note 14 Business combinations) using the historical book values of IIAL. Prior to the Reorganization the Vertical Aerospace Net Assets had not presented standalone financial statements, and, as a result, financial information for the period up to July 2020 were derived from IIAL’s historical financial records as if the Vertical Aerospace Net Assets (including VAEL from July 2019) had been a standalone business. Accordingly, the financial information for that period is shown on a carve-out basis to present the results of operations. 2 Significant accounting policies (continued) All transactions and balances between the Vertical Aerospace Net Assets and the Parent Group during the period prior to July 2020 which were not historically settled in cash, were considered to be effectively settled in cash in the consolidated financial statements at the time the transaction was recorded. The total net effect of the settlement of these transactions between the Vertical Aerospace Net Assets and the Parent Group are reflected in the Consolidated statement of cash flows as Movement in net parent investment in financing activity, and in the Consolidated statement of financial position and Statement of changes in equity as Net parent investment. During the period prior to July 2020, the Group’s equity balance represented the excess of total assets over total liabilities and was recorded within the account Net parent investment. Net parent investment represents the cumulative financing by the Parent Group and the Founder in the Vertical Aerospace Net Assets through to the Reorganization. In connection with the Reorganization the Net parent investment balance was reclassified to Other reserves. Assets and liabilities that were specifically identifiable or attributable to the Vertical Aerospace Net Assets have been included in the carve-out financial information, in addition to the assets and liabilities of VAEL after its acquisition in July 2019. The deferred consideration related to the VAEL acquisition with a fair value of £820,000 at the date of acquisition has been reflected in the carve-out financial information up to July 2020. The outstanding deferred consideration balance at July 2020 with a fair value of £542,000 at that date was not included in the Vertical Aerospace Net Assets, and is treated as an increase to Net Parent Investment immediately prior to the reclassification to Other reserves. The carve-out financial information also includes all income and expenses incurred by IIAL up to July 2020 as management believes this to be a reasonable representation, however it may not reflect the income and expenses that would be been incurred if the Vertical Aerospace Net Assets operated as an independent business for the period prior to the Reorganization.
Basis of preparation	Basis of preparation These condensed unaudited consolidated interim financial statements for the six months ended June 30, 2021 have been prepared in accordance with IAS 34 Interim Financial Reporting as issued by the IASB, and should be read in conjunction with the Group’s last annual consolidated financial statements for year ended December 31, 2020. They do not include all of the information required for a complete set of financial statements prepared in accordance with IFRS Standards. However selected explanatory notes are included to explain events and transactions that are significant to an understanding of the changes in the Group’s consolidated financial position and consolidated performance since the last annual financial statements. These condensed unaudited consolidated interim financial statements were authorized for issue by the Management Board on September 20, 2021. Items included in the financial statements are measured using the currency of the primary economic environment in which the entity and its subsidiaries operate (‘the functional currency’). The financial statements are presented in pounds sterling (‘£’ or ‘GBP’), which is the Group’s functional and presentation currency.	Basis of preparation All intercompany balances and transactions have been eliminated in consolidation. The financial statements have been prepared under historical cost accounting rules, apart from certain financial liabilities which are recognised at fair value. If the Company had derivative financial instruments, these would have been measured at fair value. The preparation of financial statements in conformity with IFRS requires the use of certain critical accounting estimates. It also requires management to exercise its judgement in the process of applying the company’s accounting policies. Items included in the financial statements are measured using the currency of the primary economic environment in which the entity and its subsidiaries operate (‘the functional currency’). The financial statements are presented in pounds sterling (‘£’ or ‘GBP’), which is the Group’s functional and presentation currency and all amounts are presented in and rounded to the nearest thousand unless otherwise indicated.
Basis of consolidation		​ 2 Significant accounting policies (continued) Basis of consolidation Vertical Aerospace Group Ltd is the parent of the Group. Details of the subsidiaries are as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Proportion of ​ ​ ​ ​ ​ ​ ​ ​ ownership ​ ​ ​ ​ ​ ​ ​ ​ interest and ​ ​ ​ ​ ​ ​ ​ ​ voting rights held ​ ​ Name of subsidiary Principal activity Registered office 2020 2019 Vertical Advanced Engineering Ltd Sale of engineering consultancy services 140-142 Kensington Church Street, London, W8 4BN UK 100 % 100 % ​ Summary of significant accounting policies and key accounting estimates The principal accounting policies applied in the preparation of these financial statements are set out below. These policies have been consistently applied to all the years presented, unless otherwise stated.
Going concern	Going concern Management has prepared a cash flow forecast for the Group and has considered the ability for the Group to continue as a going concern for the foreseeable future, being at least 12 months after approving these financial statements. ​ 2 The Group is currently in the research and development phase of its journey to commercialization of eVTOL technology. It is generating minimal revenue, has a limited amount of cash on hand and has incurred net losses and net cash outflows from operations since inception. To date, the cash funding for the Group has come from private investors. Since December 31, 2020, the Group has raised £25 million through the issue of convertible notes (see Note 10 Convertible notes) and has also converted a £9 million loan to equity. As of June 30, 2021, the Group had approximately £17,144 thousand of cash and cash equivalents on hand. Prior to the issuance of the consolidated financial statements for the year ended December 31, 2020 in July 2021, management prepared a cash flow model detailing the cash inflows and outflows of the Group and determined that the Group had sufficient cash to fund its activity for a period of 18 months from the date of approval of the financial statements. Subsequent to the July 2021 release of the consolidated financial statements for the year ended December 31, 2020, management increased its investment into research and development activities. The increased activities, including hiring additional engineers and other staff, resulted in increased cash outflows, reducing cash and cash equivalents significantly. The Group is therefore dependent on additional financing for research and development activities and operational activities. Management plans to finance these activities with the proceeds from the contemplated US public listing via a merger with a Special Purpose Acquisition Company (‘SPAC’), which is expected to be completed in the fourth quarter of 2021. The timely realization of the transaction is imperative for the Group’s ability to continue as a going concern. Based on the Group’s cash flow forecast and the need to raise additional capital to finance future operations, management has concluded that there is substantial doubt about the Group’s ability to continue as a going concern. The financial statements have been prepared on a going concern basis and do not include any adjustments to the amounts and classification of assets and liabilities that may be necessary in the event the Group can no longer continue as a going concern.	Going concern Management has prepared a cash flow forecast for the Group and has considered the ability for the Group to continue as a going concern for the foreseeable future, being at least 12 months after approving these financial statements. The Group is currently in the research and development phase of its journey to commercialization of eVTOL technology. It is generating minimal revenue, has a limited amount of cash on hand and has incurred net losses and net cash outflows from operations since inception. To date, the cash funding for the Group has come from private investors. Since December 31, 2020, the Group has raised £25m through the issue of convertible notes (see Note 27 Non adjusting events after the reporting period) and has also converted a £9m loan to equity. As of December 31, 2020, the Group had approximately £839 thousand of cash and cash equivalents on hand. Prior to the issuance of the financial statements in July 2021, management prepared a cash flow model detailing the cash inflows and outflows of the Group and determined that the Group had sufficient cash to fund its activity for a period of 18 months from the date of approval of the financial statements. Subsequent to the July 2021 release of the financial statements, management increased its investment into research and development activities. The increased activities, including hiring additional engineers and other staff, resulted in increased cash outflows, reducing cash and cash equivalents significantly. The Group is therefore dependent on additional financing for research and development activities and operational activities. Management plans to finance these activities with the proceeds from the contemplated US public listing via a merger with a Special Purpose Acquisition Company (‘SPAC’), which is expected to be completed in the fourth quarter of 2021. The timely realization of the transaction is imperative for the Group’s ability to continue as a going concern. Based on the Group’s cash flow forecast and the need to raise additional capital to finance future operations, management has concluded that there is substantial doubt about the Group’s ability to continue as a going concern. The financial statements have been prepared on a going concern basis and do not include any adjustments to the amounts and classification of assets and liabilities that may be necessary in the event the Group can no longer continue as a going concern.
Changes in accounting policy		2 Significant accounting policies (continued) Changes in accounting policy The Group early adopted the following standards and amendments for the first time from the annual reporting period commencing January 1, 2019: ● Definition of Material — amendments to IAS 1 and IAS 8 ● Definition of a Business — amendments to IFRS 3 ● Interest Rate Benchmark Reform — amendments to IFRS 9, IAS 39 and IFRS 7 ● Revised Conceptual Framework for Financial Reporting The amendments listed above did not have any impact on the amounts recognised in prior periods and are not expected to significantly affect the current or future periods. No new accounting standards and interpretations that have been published and are not mandatory for December 31, 2020 reporting periods have been early adopted by the Group or are expected to have a material impact on the Group in current or future reporting periods.
Revenue recognition		Revenue recognition Revenues are minimal to the Group and are generated from the performance of engineering consultancy services to customers. IFRS 15 deals with revenue recognition and establishes principles for reporting useful information to users of financial statements about the nature, amount, timing and uncertainty of revenue and cash flows arising from an entity’s contracts with customers. IFRS principles are applied using the following 5 step model: 1. Identify the contracts with the customer 2. Identify the performance obligations in the contract 3. Determine the transaction price 4. Allocate the transaction price to the performance obligations in the contract 5. Recognise revenue when or as the entity satisfies its performance obligations The revenue for the Group relates solely to engineering consultancy services and revenue is recognised once the Group has satisfied the performance conditions. The contracts that the Group enters into comprise payments when certain milestones are met. Revenue is recognised at each milestone event and only if the milestone is met.
Government grants		Government grants Government grants are recognised as Other operating income and are recognised in the period when the expense to which the grant relates is incurred. Grants are only recognised when there is a signed grant offer letter or equivalent from the government body and there is reasonable assurance that the Group will be able to satisfy all conditions of the grant. 2 Significant accounting policies (continued) Receivables relating to government grants are presented in Trade and other receivables at their fair value.
Research and development expenses		Research and development expenses Research expenditure is charged to the income statement in the period in which it occurred. Development expenditure is recognised as an intangible asset when it is probable that the project will generate future economic benefit, considering factors such as technological, commercial and regulatory feasibility. Other development expenditure is charged to the income statement in the period in which it occurred. Refer to note 3 Critical accounting judgements and key sources of estimation uncertainty for a discussion on the judgement of this classification. The amounts included in research and development expenses include staff costs for staff working directly on research and development projects and for expenses directly attributable to a research project, excluding software costs.
Finance income and costs policy		Finance income and costs policy Financing expense comprises interest payable on loans from related parties and is recognised in profit or loss using the effective interest method. Interest income and interest payable is recognised in profit or loss as it accrues, using the effective interest method.
Foreign currency transactions and balances		Foreign currency transactions and balances Transactions in foreign currencies are initially recorded at the functional currency rate prevailing at the date of the transaction. Monetary assets and liabilities denominated in foreign currencies are retranslated into the respective functional currency of the entity at the rates prevailing on the reporting period date. Non-monetary items carried at fair value that are denominated in foreign currencies are retranslated at the rates prevailing on the initial transaction dates. Non-monetary items measured in terms of historical cost in a foreign currency are not retranslated.
Tax		Tax The tax expense for the period comprises current tax and deferred tax. Tax is recognised in profit or loss, except that a change attributable to an item of income or expense recognised as other comprehensive income is also recognised directly in other comprehensive income. The current income tax charge is calculated on the basis of tax rates and laws that have been enacted or substantively enacted by the reporting date in the countries where the company operates and generates taxable income. Current tax assets and tax liabilities are offset where the entity has a legally enforceable right to offset and intends either to settle on a net basis, or to realize the asset and settle the liability simultaneously. Deferred tax is provided on temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts used for taxation purposes. The following temporary differences are not provided for: the initial recognition of goodwill; the initial recognition of assets or liabilities that affect neither accounting nor taxable profit other than in a business combination, and differences relating to investments in subsidiaries to the extent that they will probably not reverse in the foreseeable future. The amount of deferred tax provided is based on the expected manner of realization or settlement of the carrying amount of assets and liabilities, using tax rates enacted or substantively enacted at the balance sheet date. 2 Significant accounting policies (continued) Deferred tax assets are recognized only if it is probable that future taxable amounts will be available to utilize those temporary differences and losses. Deferred tax assets and liabilities are offset where there is a legally enforceable right to offset current tax assets and liabilities and where the deferred tax balances relate to the same taxation authority. The Group is the recipient of R&D tax credits in the UK. These tax credits are presented within the other operating income.
Property, plant and equipment		Property, plant and equipment Property, plant and equipment is stated in the statement of financial position at cost, less any subsequent accumulated depreciation and subsequent accumulated impairment losses. The cost of property, plant and equipment includes directly attributable incremental costs incurred in their acquisition and installation. Depreciation Depreciation is charged so as to write off the cost of assets over their estimated useful lives, as follows: ​ ​ ​ ​ Asset class Depreciation method and rate Leasehold property ​ Straight line over term of lease Computer equipment ​ 3 years straight line Leasehold improvements ​ 5
Intangible assets		Intangible assets Intangible assets are carried at cost, less accumulated amortization and impairment losses. Computer software licences acquired for use within the Company are capitalised as an intangible asset on the basis of the costs incurred to acquire and bring to use the specific software. Amortization Amortization is provided on intangible assets so as to write off the cost on a straight line basis, less any estimated residual value, over their expected useful economic life as follows: ​ ​ ​ ​ Asset class Amortization method and rate IT software ​ 3 years straight line
Business combinations and goodwill		Business combinations and goodwill The purchase method is used to account for the acquisition of subsidiaries by the Group. The cost of an acquisition is measured as the fair value of the assets given, equity instruments issued and liabilities incurred or assumed at the date of exchange. Identifiable assets acquired and liabilities and contingent liabilities assumed are measured initially at their fair values on the date of acquisition. The excess of the cost of acquisition over the fair value of the Group’s share of identifiable net assets, including intangible assets acquired, is recorded as goodwill. If the cost of acquisition is less than the fair value of the Group’s share of net assets of the subsidiary acquired, the difference is recognised directly in the income statement. 2 Significant accounting policies (continued) Goodwill is stated at cost, less any accumulated impairment losses. Goodwill is tested annually for impairment or when there are indicators of impairment.
Cash and cash equivalents		Cash and cash equivalents Cash and cash equivalents include cash at bank and in hand.
Trade and other receivables		Trade and other receivables Trade receivables are amounts due from customers for services performed in the ordinary course of business. If collection is expected in one year or less (or in the normal operating cycle of the business if longer), they are classified as current assets. If not, they are presented as non-current assets. Trade receivables are recognised initially at the transaction price. They are subsequently measured at amortised cost using the effective interest method, less provision for impairment. A provision for the impairment of trade receivables is established using an expected credit loss model as per the Group’s accounting policy for the impairment of financial assets. Other receivables represent amounts due from parties who are not customers and are measured at amortized cost.
Trade and other payables		Trade and other payables Trade and other payables are obligations to pay for goods or services that have been acquired in the ordinary course of business from suppliers. Accounts payable are classified as current liabilities if payment is due within one year or less (or in the normal operating cycle of the business if longer). If not, they are presented as non-current liabilities. Trade and other payables are recognised initially at the transaction price and subsequently measured at amortized cost using the effective interest method.
Borrowings		Borrowings All borrowings are initially recorded at the amount of proceeds received, net of transaction costs. Borrowings are subsequently carried at amortized cost, with the difference between the proceeds, net of transaction costs, and the amount due on redemption being recognised as a charge to the income statement over the period of the relevant borrowing. Borrowings are classified as current liabilities unless the company has an unconditional right to defer settlement of the liability for at least 12 months after the reporting date.
Provisions		Provisions Provisions are recognised when the company has a present obligation (legal or constructive) as a result of a past event, it is probable that the group will be required to settle that obligation and a reliable estimate can be made of the amount of the obligation. Provisions are measured at management’s best estimate of the expenditure required to settle the obligation at the reporting date and are discounted to present value where the effect is material.
Leases		2 Significant accounting policies (continued) Leases Definition A lease is a contract, or part of a contract, that conveys the right to use an asset or a physically distinct part of an asset (‘the underlying asset’) for a period of time in exchange for consideration. Further, the contract must convey the right to the company to control the asset or a physically distinct portion thereof. A contract is deemed to convey the right to control the underlying asset, if throughout the period of use, the company has the right to: Obtain substantially all the economic benefits from the use of the underlying asset, and; Direct the use of the underlying asset (eg direct how and for what purpose the asset is used). Initial recognition and measurement The company initially recognizes a lease liability for the obligation to make lease payments and a right-of-use asset for the right to use the underlying asset for the lease term. The lease liability is measured at the present value of the lease payments to be made over the lease term. The lease payments include fixed payments, purchase options at exercise price (where payment is reasonably certain), expected amount of residual value guarantees, termination option penalties (where payment is considered reasonably certain) and variable lease payments that depend on an index or rate. The right-of-use asset is initially measured at the amount of the lease liability, adjusted for lease prepayments, lease incentives received, the company’s initial direct costs (e.g., commissions) and an estimate of restoration, removal and dismantling costs. Subsequent measurement After the commencement date, the company measures the lease liability by: (a) Increasing the carrying amount to reflect interest on the lease liability; (b) Reducing the carrying amount to reflect the lease payments made; and (c) Re-measuring the carrying amount to reflect any reassessment or lease modifications or to reflect revised in substance fixed lease payments or on the occurrence of other specific events. Interest on the lease liability in each period during the lease term is the amount that produces a constant periodic rate of interest on the remaining balance of the lease liability. Interest charges are included in finance costs in the income statement, unless the costs are included in the carrying amount of another asset applying other applicable standards. Variable lease payments not included in the measurement of the lease liability, are included in operating expenses in the period in which the event or condition that triggers them arises. The related right-of-use asset is accounted for using the Cost model in IAS 16 and depreciated and charged in accordance with the depreciation requirements of IAS 16 Property, Plant and Equipment as disclosed in the accounting policy for Property, Plant and Equipment. Adjustments are made to the carrying value of the right of use asset where the lease liability is re-measured in accordance with the above. Right of use assets are tested for impairment in accordance with IAS 36 Impairment of assets as disclosed in the accounting policy in impairment. 2 Significant accounting policies (continued) Short term and low value leases The company has made an accounting policy election, by class of underlying asset, not to recognize lease assets and lease liabilities for leases with a lease term of 12 months or less (i.e., short-term leases). The company has made an accounting policy election on a lease-by-lease basis, not to recognize lease assets on leases for which the underlying asset is of low value. Lease payments on short term and low value leases are accounted for on a straight line bases over the term of the lease or other systematic basis if considered more appropriate. Short term and low value lease payments are included in operating expenses in the income statements.
Impairment (non-financial assets)		Impairment (non-financial assets) All assets are reviewed for impairment when there is an indicator of impairment. In addition, goodwill is reviewed for impairment at least annually. An impairment loss is recognised whenever the carrying amount of an asset or its cash-generating unit exceeds its recoverable amount.
Share capital		Share capital Ordinary shares are classified as equity. Equity instruments are measured at the fair value of the cash or other resources received or receivable, net of the direct costs of issuing the equity instruments. If payment is deferred and the time value of money is material, the initial measurement is on a present value basis.
Defined contribution pension obligation		Defined contribution pension obligation A defined contribution plan is a pension plan under which fixed contributions are paid into a separate entity and has no legal or constructive obligations to pay further contributions if the fund does not hold sufficient assets to pay all employees the benefits relating to employee service in the current and prior periods. For defined contribution plans contributions are paid into publicly or privately administered pension insurance plans on a mandatory or contractual basis. The contributions are recognized as employee benefit expense when they are due.
Share based payments		Share based payments Vertical Aerospace Group Ltd operates an equity-settled, share based compensation plan, under which the entity receives services from employees as consideration for equity instruments (share options or shares) of Vertical Aerospace Group Ltd. The fair value of the employee services received in exchange for the grant of the shares is recognised as an expense. The total amount to be expensed is determined by reference to the fair value of the shares granted: ● including any market performance conditions (for example, an entity’s share price); ● excluding the impact of any service and non-market performance vesting conditions (for example, remaining an employee of the entity over a specified time period); and ● including the impact of any non-vesting conditions. 2 Significant accounting policies (continued) Non-market performance and service conditions are included in assumptions about the number of shares that are expected to vest. The total expense is recognized over the vesting period, which is the period over which all of the specified vesting conditions are to be satisfied. In addition, in some circumstances employees may provide services in advance of the grant date and therefore, the grant date fair value is estimated for the purposes of recognizing the expense during the period between service commencement period and grant date. The fair value of ordinary shares in the Group are interpolated from externally set valuations based on investment offers received from third parties (whether accepted or not). In the absence of third party investment offers, internal valuations are used and are benchmarked against third party investment offers when they become available. Further assumptions are applied to the imputed valuations to reflect factors such as lack of marketability and control, including lack of voting rights, where appropriate. At the end of each reporting period, the Group revises its estimates of the number of shares that are expected to vest based on the non-market vesting conditions. They recognize the impact of the revision to original estimates, if any, in the income statement, with a corresponding adjustment to equity.
Financial instruments		Financial instruments Initial recognition Financial assets and financial liabilities comprise all assets and liabilities reflected in the statement of financial position, although excluding property, plant and equipment, intangible assets, deferred tax assets, prepayments, deferred tax liabilities and employee benefits plan. The company recognizes financial assets and financial liabilities in the statement of financial position when, and only when, the company becomes party to the contractual provisions of the financial instrument. Financial assets are initially recognized at fair value. Financial liabilities are initially recognized at fair value, representing the proceeds received net of premiums, discounts and transaction costs that are directly attributable to the financial liability. All regular way purchases and sales of financial assets and financial liabilities classified as fair value through profit or loss (“FVTPL”) are recognized on the trade date, i.e. the date on which the company commits to purchase or sell the financial assets or financial liabilities. All regular way purchases and sales of other financial assets and financial liabilities are recognized on the settlement date, i.e. the date on which the asset or liability is received from or delivered to the counterparty. Regular way purchases or sales are purchases or sales of financial assets that require delivery within the time frame generally established by regulation or convention in the market place. Subsequent to initial measurement, financial assets and financial liabilities are measured at either amortized cost or fair value. ​ 2 Significant accounting policies (continued) Classification and measurement Financial instruments are classified at inception into one of the following categories, which then determine the subsequent measurement methodology: - I. Financial Assets Financial assets are classified into one of the following three categories: ● financial assets at amortized cost; ● financial assets at fair value through other comprehensive income (FVTOCI); or ● financial assets at fair value through the profit or loss (FVTPL). Criteria for measurement of Financial asset at amortized cost A financial asset is measured at amortized cost if it meets both of the following conditions and is not designated as at FVTPL: ● the assets are held within a business model whose objective is to hold assets in order to collect contractual cash flows; and ● the contractual terms of the financial assets give rise on specified dates to cash flows that are solely payments of principal and interest on the principal amount outstanding. If either of the above two criteria is not met, the financial assets are classified and measured at fair value through the profit or loss (FVTPL). Additionally, if a financial asset meets the amortized cost criteria, the company may choose to designate the financial asset at FVTPL. Such an election is irrevocable and applicable only if the FVTPL classification significantly reduces a measurement or recognition inconsistency. II. Financial liabilities Financial liabilities are classified into one of the following two categories: ● financial liabilities at amortized cost; or ● financial liabilities at fair value through the profit or loss (FVTPL). Financial liabilities at amortized cost All financial liabilities, other than those classified as financial liabilities at FVTPL, are measured at amortized cost using the effective interest rate method. Financial liabilities at fair value through the profit or loss Financial liabilities not measured at amortized cost are classified and measured at FVTPL. The classification of financial instruments is as follows: 2 Significant accounting policies (continued) Amortized cost Derecognition of financial assets and liabilities Financial assets are derecognized when the contractual rights to the cash flow have expired or been transferred together with substantially all risks and rewards. Financial liabilities are derecognized when they are extinguished. Impairment of financial assets Measurement of Expected Credit Losses The company recognises loss allowances for expected credit losses (ECL) on financial instruments that are not measured at FVPTL, namely Trade and other receivables. The company applies the simplified approach, which requires expected lifetime losses to be recognised from initial recognition of the receivables. To measure the expected credit losses, trade receivables have been grouped based on shared credit risk characteristics and the days past due. The expected loss rates are based on the payment profiles of sales over a period of 18 months before 31 December 2020 and the corresponding historical credit losses experienced within this period. The historical loss rates are adjusted to reflect current and forward-looking information on macroeconomic factors affecting the ability of the customers to settle the receivables.

Revenue (Tables)

Revenue (Tables)	6 Months Ended	12 Months Ended
	Jun. 30, 2021	Dec. 31, 2020
Revenue
Summary of analysis of the company's revenue for the year from continuing operations	​ ​ ​ ​ ​ ​ ​ 2021 2020 ​ ​ £ 000 ​ £ 000 Rendering of engineering consultancy services 66 49	​ ​ ​ ​ ​ ​ ​ 2020 2019 ​ ​ £ 000 ​ £ 000 Rendering of engineering consultancy services 87 70

Other operating income (Tables)

Other operating income (Tables)	6 Months Ended	12 Months Ended
	Jun. 30, 2021	Dec. 31, 2020
Other operating income
Summary of analysis of the Group's other operating income	​ ​ ​ ​ ​ ​ ​ 6 months ended 6 months ended ​ ​ June 30, ​ June 30, ​ ​ 2021 ​ 2020 ​ ​ £ 000 ​ £ 000 Government grants 8,999 — R&D tax credit 687 — ​ 9,686 —	​ ​ ​ ​ ​ ​ ​ 2020 2019 ​ ​ £ 000 ​ £ 000 Government grants 1,989 — R&D tax credit 328 399 ​ 2,317 399

Expenses by nature (Tables)

Expenses by nature (Tables)	6 Months Ended	12 Months Ended
	Jun. 30, 2021	Dec. 31, 2020
Expenses by nature
Summary of expense by nature	​ ​ ​ ​ ​ ​ ​ 6 months ended 6 months ended ​ ​ June 30, ​ June 30, ​ ​ 2021 ​ 2020 ​ ​ £ 000 ​ £ 000 Staff costs excluding share based payments 5,546 3,580 Share based payment expenses 76 — Software costs 497 271 Depreciation expense 162 134 Depreciation on right of use assets – Property 70 70 Amortization expense 168 117 Consultancy costs 1,501 523 Foreign exchange (losses)/gains (16) 26 Expense on short term leases 30 36 Research and development components 2,478 1,909 Related party administrative expenses 127 72 Legal costs 2,060 8 Other administrative expenses 1,574 208 Other research and development costs 625 115 ​ 14,898 7,068	​ ​ ​ ​ ​ ​ ​ 2020 2019 ​ ​ £ 000 ​ £ 000 Staff costs excluding share based payment expenses 8,445 3,642 Share based payment expenses 96 — Software costs 579 191 Depreciation expense 279 89 Depreciation on right of use assets – Property 140 171 Amortisation expense 263 70 Consultancy costs 745 518 Foreign exchange gains/(losses) 26 (6) Expense on short term leases 64 8 Research and development components 2,095 1,933 Related party administrative expenses 144 144 Other administrative expenses 539 929 Other research and development costs 460 163 Total administrative and research and development expenses 13,875 7,851 ​

Share capital (Tables)

Share capital (Tables)	6 Months Ended	12 Months Ended
	Jun. 30, 2021	Dec. 31, 2020
Share capital.
Summary of allotted, called up and fully paid shares	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ June 30, ​ December 31, ​ ​ 2021 ​ 2020 ​ ​ No. ​ £ ​ No. ​ £ A ordinary of £0.00001 each 123,220 1.23 100,000 1.00 B ordinary of £0.00001 each 4,832 0.05 4,832 0.05 Z ordinary of £0.00001 each 5,804 0.06 — — ​ 133,856 1.34 104,832 1.05	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, December 31, ​ 2020 2019 ​ No. £ No. £ A ordinary of £0.00001 each 100,000 1.00 100,000 1.00 B ordinary of £0.00001 each 4,832 0.05 4,832 0.05 ​ 104,832 1.05 104,832 1.05
Schedule of fair value of options granted	​ ​ ​ ​ ​ June 10, ​ ​ 2021 Share price at date of grant ($) 9.93 Option strike price ($) 18.00 Expected volatility (%) 75.00 Maximum term to exercise (years) 3 and 4 Risk-free interest rate (%) 0.75	​ ​ ​ ​ ​ ​ December 31, ​ 2020 Share price at date of grant (£) 40.36 Expected volatility (%) 50.00 Vesting period in years 1.13 Option life in years 4.00 Risk-free interest rate (%) (0.13)

Loans from related parties (Tab

Loans from related parties (Tables)	6 Months Ended	12 Months Ended
	Jun. 30, 2021	Dec. 31, 2020
Loans from related parties
Summary of loans from related parties	​ ​ ​ ​ ​ ​ ​ 2021 2020 ​ ​ £ 000 ​ £ 000 As at January 1 6,309 — Amounts advanced 2,945 — Interest charge 483 — Amounts repaid (737) — Conversion to equity (9,000) — As at June 30 — —	​ ​ ​ ​ ​ ​ ​ ​ December 31, ​ December 31, ​ 2020 2019 ​ ​ £ 000 ​ £ 000 Current loans and borrowings Loans from related parties 6,309 — ​ ​ ​ ​ ​ ​ ​ 2020 2019 ​ ​ £ 000 ​ £ 000 As at January 1 — — Amounts advanced 5,600 — Interest charged 709 — As at December 31 6,309 —

Significant accounting polici_3

Significant accounting policies (Details) - Vertical Advanced Engineering Ltd - GBP (£)	Dec. 31, 2020	Jul. 31, 2020	Dec. 31, 2019	Jul. 31, 2019
Disclosure of detailed information about business combination [line items]
Deferred consideration related to acquisition			£ 820,000	£ 820,000
Outstanding deferred consideration	£ 0	£ 542,000

Significant accounting polici_4

Significant accounting policies - Going concern (Details) - GBP (£) £ in Thousands	1 Months Ended	6 Months Ended
	Jul. 31, 2021	Jun. 30, 2021	Dec. 31, 2020	Jun. 30, 2020	Dec. 31, 2019	Dec. 31, 2018
Disclosure of non-adjusting events after reporting period [line items]
Amount of loan converted to equity		£ 9,000
Cash and cash equivalents on hand		17,144	£ 839	£ 1,516	£ 1,029	£ 272
Issue of convertible notes
Disclosure of non-adjusting events after reporting period [line items]
Amount raised through issuance of debt		£ 25,000
Cash flow projection
Disclosure of non-adjusting events after reporting period [line items]
Projected funding period of cash and cash equivalents held	18 months	18 months
Convertible notes .
Disclosure of non-adjusting events after reporting period [line items]
Amount raised through issuance of debt		£ 25,000
Amount of loan converted to equity		£ 9,000

Operating segments (Details)

Operating segments (Details) - segment	6 Months Ended	12 Months Ended
	Jun. 30, 2021	Dec. 31, 2020
Operating segments
Number of reporting segment	1	1

Revenue (Details)

Revenue (Details) - GBP (£) £ in Thousands	6 Months Ended		12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020	Dec. 31, 2019
Rendering of engineering consultancy services
Disclosure of disaggregation of revenue from contracts with customers [line items]
Rendering of engineering consultancy services	£ 66	£ 49	£ 87	£ 70

Other operating income (Details

Other operating income (Details) - GBP (£) £ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2021	Dec. 31, 2020	Dec. 31, 2019
Other operating income
Government grants	£ 8,999	£ 1,989
R&D tax credit	687	328	£ 399
Other operating income	£ 9,686	£ 2,317	£ 399

Other operating income - Govern

Other operating income - Government grants (Details) - GBP (£)	Jun. 30, 2021	Dec. 31, 2020
Other operating income
Government grants receivable	£ 8,943,000	£ 1,989,000

Expenses by nature (Details)

Expenses by nature (Details) - GBP (£) £ in Thousands	6 Months Ended		12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020	Dec. 31, 2019
Expenses by nature
Staff costs excluding share based payment expenses	£ 5,546	£ 3,580	£ 8,445	£ 3,642
Share based payment expenses	76		96
Software costs	497	271	579	191
Depreciation expense	162	134	279	89
Depreciation on right of use assets - Property	70	70	140	171
Amortisation expense	168	117	263	70
Consultancy costs	1,501	523	745	518
Foreign exchange gains/(losses)	(16)	26	26	(6)
Expense on short term leases	30	36	64	8
Research and development components	2,478	1,909	2,095	1,933
Related party administrative expenses	127	72	144	144
Legal costs	2,060	8
Other administrative expenses	1,574	208	539	929
Other research and development costs	625	115	460	163
Total administrative and research and development expenses	£ 14,898	£ 7,068	£ 13,875	£ 7,851

Share capital - Allotted, calle

Share capital - Allotted, called up and fully paid shares (Details) - GBP (£)	Jun. 30, 2021	Dec. 31, 2020	Jun. 30, 2020	Dec. 31, 2019
Disclosure of classes of share capital [line items]
Number of shares allotted, called up and fully paid shares	133,856	104,832		104,832
Issued capital	£ 1.34	£ 1.05		£ 1.05
Number of other shares authorized for allotment		0
A ordinary
Disclosure of classes of share capital [line items]
Par value per share	£ 0.00001	£ 0.00001	£ 0.00001
Number of shares allotted, called up and fully paid shares	123,220	100,000		100,000
Issued capital	£ 1.23	£ 1		£ 1
B ordinary
Disclosure of classes of share capital [line items]
Par value per share	£ 0.00001	£ 0.00001	£ 0.00001
Number of shares allotted, called up and fully paid shares	4,832	4,832		4,832
Issued capital	£ 0.05	£ 0.05		£ 0.05
Ordinary shares authorized for allotment to fulfil future option exercises		25,973
Z ordinary
Disclosure of classes of share capital [line items]
Par value per share	£ 0.00001
Number of shares allotted, called up and fully paid shares	5,804	0
Issued capital	£ 0.06	£ 0

Share capital - Net parent inve

Share capital - Net parent investment (Details) - GBP (£)	Jun. 10, 2021	Jun. 30, 2021
Disclosure of classes of share capital [line items]
Consideration for issuance of shares		£ 9,000,000
Transaction costs		0
Share premium.
Disclosure of classes of share capital [line items]
Consideration for issuance of shares		£ 9,000,000
A ordinary
Disclosure of classes of share capital [line items]
Shares issued during the period		23,220
Weighted average share price		£ 387.60
A ordinary | Share capital
Disclosure of classes of share capital [line items]
Consideration for issuance of shares		£ 0.2322
A ordinary | Share premium.
Disclosure of classes of share capital [line items]
Consideration for issuance of shares		£ 9,000,000
Z ordinary | American Airlines, Inc.
Disclosure of classes of share capital [line items]
Shares issued during the period	5,804
Weighted average share price	£ 2,884
Consideration for issuance of shares	£ 0.06
Z ordinary | Share premium. | American Airlines, Inc.
Disclosure of classes of share capital [line items]
Consideration for issuance of shares	£ 16,738,000

Share capital - Call Option Agr

Share capital - Call Option Agreement (Details)	Jun. 10, 2021Y$ / shares	Dec. 31, 2020£ / shares
Disclosure of classes of share capital [line items]
Share price at date of grant ($) | £ / shares		£ 40.36
Expected volatility (%)		50.00%
Maximum term to exercise (years)		4
Risk-free interest rate (%)		(0.13%)
Call Option
Disclosure of classes of share capital [line items]
Share price at date of grant ($) | $ / shares	$ 9.93
Option strike price ($) | $ / shares	$ 18
Expected volatility (%)	75.00%
Risk-free interest rate (%)	0.75%
Call Option | Maximum [Member]
Disclosure of classes of share capital [line items]
Maximum term to exercise (years) | Y	4
Call Option | Minimum [Member]
Disclosure of classes of share capital [line items]
Maximum term to exercise (years) | Y	3

Loans from related parties - Mo

Loans from related parties - Movements on loan balances (Details) - GBP (£) £ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2021	Dec. 31, 2020
Loans from related parties
As at January 1	£ 6,309
Amounts advanced	2,945	£ 5,600
Interest charged	483	709
Amounts repaid	(737)
Conversion to equity	£ (9,000)
As at June 30		£ 6,309
Interest rate		30.00%

Convertible notes (Details)

Convertible notes (Details) - GBP (£) £ in Thousands	6 Months Ended
	Jun. 30, 2021	Mar. 31, 2021
Disclosure of detailed information about borrowings [line items]
Proceeds from convertible notes	£ 25,000
Convertible notes..
Disclosure of detailed information about borrowings [line items]
Proceeds from convertible notes		£ 25,000
Interest accrued or payable on the notes	0
Additional amount that can be raised	50,000
Maximum amount that can be borrowed without the consent of note holders	£ 50,000

Consolidated Statement of Compr

Consolidated Statement of Comprehensive Income - GBP (£) £ in Thousands	6 Months Ended		12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020	Dec. 31, 2019
INCOME STATEMENT ABSTARCT
Revenue	£ 66	£ 49	£ 87	£ 70
Cost of sales	(25)	(25)	(44)	(66)
Gross profit	41	24	43	4
Research and development expenses	(7,747)	(5,071)	(9,971)	(5,153)
Administrative expenses	(7,151)	(1,997)	(3,760)	(2,554)
Related party administrative expenses	(127)	(72)	(144)	(144)
Expense recognized on issue of Z shares at below fair value	16,739
Other operating income	9,686		2,317	399
Operating loss	(22,037)	(7,116)	(11,515)	(7,448)
Finance costs	(37)	(59)	(98)	(66)
Related Party finance costs	(483)		(709)
Total finance costs	(520)	(59)	(807)	(66)
Loss before tax	(22,557)	(7,175)	(12,322)	(7,514)
Income tax (expense)/benefit			(4)	30
Net loss for the period and total comprehensive loss	£ (22,557)	£ (7,175)	£ (12,326)	£ (7,484)
Basic loss per share	£ (209.37)	£ (71.75)	£ (123.26)	£ (74.84)
Diluted loss per share	£ (209.37)	£ (71.75)	£ (123.26)	£ (74.84)

Consolidated Statement of Finan

Consolidated Statement of Financial Position - GBP (£)	Jun. 30, 2021	Dec. 31, 2020	Jun. 30, 2020	Dec. 31, 2019	Dec. 31, 2018
Non-current assets
Property, plant and equipment	£ 1,407,000	£ 1,422,000		£ 1,545,000	£ 59,000
Right of use assets	991,000	1,062,000		1,202,000
Intangible assets	2,211,000	2,030,000		2,060,000	31,000
Non-current assets	4,609,000	4,514,000		4,807,000
Current assets
Trade and other receivables	11,233,000	3,532,000		1,470,000
Cash and cash equivalents	17,144,000	839,000	£ 1,516,000	1,029,000	272,000
Current assets	28,377,000	4,371,000		2,499,000
Total assets	32,986,000	8,885,000		7,306,000
Equity
Share premium	25,739,000
Share capital	1.34	1.05		1.05
Other reserves	4,117,000	4,117,000
Net parent investment				4,162,000
Accumulated deficit	(27,536,000)	(5,055,000)
Total equity	2,320,000	(938,000)	£ 4,242,000	4,162,000	£ 643,000
Non-current liabilities
Long term lease liabilities	793,000	846,000		947,000
Provisions	91,000	88,000		83,000
Trade and other payables				524,000
Non-current liabilities	884,000	934,000		1,554,000
Current liabilities
Current lease liabilities	175,000	175,000		219,000
Trade and other payables	4,607,000	2,401,000		1,371,000
Loans from related parties		6,309,000
Income tax liability		4,000
Convertible notes	25,000,000
Current liabilities	29,782,000	8,889,000		1,590,000
Liabilities	30,666,000	9,823,000		3,144,000
Total equity and liabilities	£ 32,986,000	£ 8,885,000		£ 7,306,000

Consolidated Statement of Cash

Consolidated Statement of Cash Flows - GBP (£) £ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Cash flows from operating activities
Net loss for the period	£ (12,326)	£ (7,484)
Adjustments to cash flows from non-cash items
Depreciation and amortization	542	159
Depreciation on right of use assets	140	171
Finance costs	98	66
Related party finance costs	709
Share based payment transactions	96
Income tax expense/(benefit)	4	(30)
Adjustments to cash flows from non-cash items	(10,737)	(7,118)
Increase in trade and other receivables	(2,062)	(848)
Increase in trade and other payables	787	683
Net cash flows used in operating activities	(12,012)	(7,283)
Cash flows from investing activities
Acquisition of subsidiaries, net of cash acquired		(731)
Acquisitions of property plant and equipment	(155)	(1,527)
Acquisition of intangible assets	(233)	(575)
Deferred consideration payments	(300)
Net cash flows used in investing activities	(688)	(2,833)
Cash flows from financing activities
Proceeds from related party borrowings	5,600
Payments to finance lease creditors	(220)	(130)
Movement in net parent investment	7,130	11,003
Net cash flows generated from financing activities	12,510	10,873
Net increase in cash and cash equivalents	(190)	757
Cash and cash equivalents at January 1	1,029	272
Cash and cash equivalents at June 30	£ 839	£ 1,029

Consolidated Statement of Chang

Consolidated Statement of Changes in Equity - GBP (£) £ in Thousands	Other reserves	Net parent investment	Accumulated deficit	Total
Balance at the beginning at Dec. 31, 2018		£ 643		£ 643
Total comprehensive loss		(7,484)		(7,484)
Movement in net parent investment		11,003		11,003
Balance at the end at Dec. 31, 2019		4,162		4,162
Total comprehensive loss		(7,175)		(7,175)
Movement in net parent investment		7,255		7,255
Balance at the end at Jun. 30, 2020		4,242		4,242
Balance at the beginning at Dec. 31, 2019		4,162		4,162
Total comprehensive loss		(7,175)	£ (5,151)	(12,326)
Share based payment transactions			96	96
Movement in net parent investment		7,130		7,130
Transfer to Other reserves	£ 4,117	£ (4,117)
Balance at the end at Dec. 31, 2020	4,117		(5,055)	(938)
Total comprehensive loss			(22,557)	(22,557)
Share based payment transactions			76	16,815
Balance at the end at Jun. 30, 2021	£ 4,117		£ (27,536)	£ 2,320

General information_2

General information	6 Months Ended	12 Months Ended
	Jun. 30, 2021	Dec. 31, 2020
General information
General information	1 Vertical Aerospace Group Ltd (the “Company” or the “Group” if together with its subsidiaries) is a private company limited by share capital, incorporated and domiciled in UK. The address of its registered office is: 140-142 Kensington Church Street Principal activities The principal activity of the Company and its wholly owned subsidiary, Vertical Advanced Engineering Ltd (“VAEL”), is the development and commercialization of vertical take-off and landing electrically powered aircraft (‘eVTOL’). The Group’s main operations are in the United Kingdom. Prior to the Company’s formation, the principal activities of the Group were carried out by Imagination Industries Aero Ltd (“IIAL”) (formerly Vertical Aerospace Ltd), an entity indirectly but wholly owned by the Founder through an investment in Imagination Industries Ltd (“IIL”).	1 General information Vertical Aerospace Group Ltd (“VAGL”, the “Company”, or the “Group” if together with its subsidiaries) is a private company limited by share capital, incorporated and domiciled in UK formed and fully capitalized in May 2020 by Stephen Fitzpatrick (the “Founder”). The address of its registered office is: 140-142 Kensington Church Street London W8 4BN United Kingdom These financial statements were authorised for issue by the Management Board on July 9, 2021, except with respect to the matters that raise substantial doubt about the Company’s ability to continue as a going concern discussed in Note 2, as to which the date is September 20, 2021. Principal activities The principal activity of the Company and its wholly owned subsidiary, Vertical Advanced Engineering Ltd (“VAEL”), is the development and commercialization of vertical take-off and landing electrically powered aircraft (‘eVTOL’). The Group’s main operations are in the United Kingdom. Prior to the Company’s formation, the principal activities of the Group were carried out by Imagination Industries Aero Ltd (“IIAL”) (formerly Vertical Aerospace Ltd), an entity indirectly but wholly owned by the Founder through an investment in Imagination Industries Ltd (“IIL”).

Significant accounting polici_5

Significant accounting policies	6 Months Ended	12 Months Ended
	Jun. 30, 2021	Dec. 31, 2020
Significant accounting policies
Significant accounting policies	2 Presentation of these financial statements The consolidated interim financial statements of the Group have been prepared in accordance with International Financial Reporting Standards (“IFRS”) as issued by the International Accounting Standards Board (“IASB”) and reflect the historical operations of the Vertical Aerospace business further to the corporate reorganization as described below. In July 2020 IIAL, transferred all of its operations and substantially all of its net assets to VAGL (the “Vertical Aerospace Net Assets”), and in February 2021 IIAL transferred its investment in VAEL to VAGL (together, the “Reorganization”). Prior to the transfer VAGL only engaged in activities incidental to its formation. The Reorganization has been considered as a reorganization under common control for the purpose of the preparation of these consolidated financial statements and resulted in the Vertical Aerospace Net Assets being recognised by VAGL at their historical net book values. Following the transfer IIAL changed its name to Imagination Industries Aero Ltd (together with IIL, the “Parent Group”) as its remaining net assets were no longer related to or included in the Vertical Aerospace business. Through the Reorganization as described above, the Company’s principal activities became the development and commercialization of eVTOL aircraft following the contribution of the Vertical Aerospace Net Assets, and the Company became the parent of VAEL. Accordingly, the consolidated financial statements were prepared as if the Reorganization had been completed prior to the earliest period presented (except for the acquisition of VAEL which was acquired by IIAL in July 2019 as discussed in note 14 Business combinations of the consolidated financial statements for the year ended December 31, 2020) using the historical book values of IIAL. Prior to the Reorganization the Vertical Aerospace Net Assets had not presented standalone financial statements, and, as a result, financial information for the period up to July 2020 were derived from IIAL’s historical financial records as if the Vertical Aerospace Net Assets (including VAEL from July 2019) had been a standalone business. Accordingly, the financial information for that period is shown on a carve-out basis to present the results of operations. 2 All transactions and balances between the Vertical Aerospace Net Assets and the Parent Group during the period prior to July 2020 which were not historically settled in cash, were considered to be effectively settled in cash in the consolidated financial statements at the time the transaction was recorded. The total net effect of the settlement of these transactions between the Vertical Aerospace Net Assets and the Parent Group are reflected in the Consolidated statement of cash flows as Movement in net parent investment in financing activity, and in the Consolidated statement of financial position and Statement of changes in equity as Net parent investment. During the period prior to July 2020, the Group’s equity balance represented the excess of total assets over total liabilities and was recorded within the account Net parent investment. Net parent investment represents the cumulative financing by the Parent Group and the Founder in the Vertical Aerospace Net Assets through to the Reorganization. In connection with the Reorganization the Net parent investment balance was reclassified to Other reserves. The legal form of such financing to IIAL during the period prior to July 2020 was an intercompany loan from IIL which was not included in the Vertical Net Assets, as such no interest expense related to the loan is recognized in these consolidated financial statements. Assets and liabilities that were specifically identifiable or attributable to the Vertical Aerospace Net Assets have been included in the carve-out financial information, in addition to the assets and liabilities of VAEL after its acquisition in July 2019. The deferred consideration related to the VAEL acquisition with a fair value of £820,000 at the date of acquisition has been reflected in the carve-out financial information up to July 2020. The outstanding deferred consideration balance at July 2020 with a fair value of £542,000 at that date was not included in the Vertical Aerospace Net Assets, and is treated as an increase to Net Parent Investment immediately prior to the reclassification to Other reserves. The carve-out financial information also includes all income and expenses incurred by IIAL up to July 2020 as management believes this to be a reasonable representation, however it may not reflect the income and expenses that would have been incurred if the Vertical Aerospace Net Assets operated as an independent business for the period prior to the Reorganization. Basis of preparation These condensed unaudited consolidated interim financial statements for the six months ended June 30, 2021 have been prepared in accordance with IAS 34 Interim Financial Reporting as issued by the IASB, and should be read in conjunction with the Group’s last annual consolidated financial statements for year ended December 31, 2020. They do not include all of the information required for a complete set of financial statements prepared in accordance with IFRS Standards. However selected explanatory notes are included to explain events and transactions that are significant to an understanding of the changes in the Group’s consolidated financial position and consolidated performance since the last annual financial statements. These condensed unaudited consolidated interim financial statements were authorized for issue by the Management Board on September 20, 2021. Items included in the financial statements are measured using the currency of the primary economic environment in which the entity and its subsidiaries operate (‘the functional currency’). The financial statements are presented in pounds sterling (‘£’ or ‘GBP’), which is the Group’s functional and presentation currency. Going concern Management has prepared a cash flow forecast for the Group and has considered the ability for the Group to continue as a going concern for the foreseeable future, being at least 12 months after approving these financial statements. ​ 2 The Group is currently in the research and development phase of its journey to commercialization of eVTOL technology. It is generating minimal revenue, has a limited amount of cash on hand and has incurred net losses and net cash outflows from operations since inception. To date, the cash funding for the Group has come from private investors. Since December 31, 2020, the Group has raised £25 million through the issue of convertible notes (see Note 10 Convertible notes) and has also converted a £9 million loan to equity. As of June 30, 2021, the Group had approximately £17,144 thousand of cash and cash equivalents on hand. Prior to the issuance of the consolidated financial statements for the year ended December 31, 2020 in July 2021, management prepared a cash flow model detailing the cash inflows and outflows of the Group and determined that the Group had sufficient cash to fund its activity for a period of 18 months from the date of approval of the financial statements. Subsequent to the July 2021 release of the consolidated financial statements for the year ended December 31, 2020, management increased its investment into research and development activities. The increased activities, including hiring additional engineers and other staff, resulted in increased cash outflows, reducing cash and cash equivalents significantly. The Group is therefore dependent on additional financing for research and development activities and operational activities. Management plans to finance these activities with the proceeds from the contemplated US public listing via a merger with a Special Purpose Acquisition Company (‘SPAC’), which is expected to be completed in the fourth quarter of 2021. The timely realization of the transaction is imperative for the Group’s ability to continue as a going concern. Based on the Group’s cash flow forecast and the need to raise additional capital to finance future operations, management has concluded that there is substantial doubt about the Group’s ability to continue as a going concern. The financial statements have been prepared on a going concern basis and do not include any adjustments to the amounts and classification of assets and liabilities that may be necessary in the event the Group can no longer continue as a going concern. Summary of significant accounting policies and key accounting estimates The accounting policies applied in these condensed unaudited consolidated interim financial statements are the same as those applied in the Group’s consolidated financial statements for the year ended December 31, 2020.	2 Significant accounting policies Presentation of these financial statements The consolidated financial statements of the Group have been prepared in accordance with International Financial Reporting Standards (“IFRS”) as issued by the International Accounting Standards Board (“IASB”) and reflect the historical operations of the Vertical Aerospace business further to the corporate reorganization as described below. In July 2020 IIAL transferred all of its operations and substantially all of its net assets to VAGL (the “Vertical Aerospace Net Assets”), and in February 2021 IIAL transferred its investment in VAEL to VAGL (together, the “Reorganization”). Prior to the transfer VAGL only engaged in activities incidental to its formation. The Reorganization has been considered as a reorganization under common control for the purpose of the preparation of these consolidated financial statements and resulted in the Vertical Aerospace Net Assets being recognised by VAGL at their historical net book values. Following the transfer IIAL changed its name to Imagination Industries Aero Ltd (together with IIL, the “Parent Group”) as its remaining net assets were no longer related to or included in the Vertical Aerospace business. Through the Reorganization as described above, the Company’s principal activities became the development and commercialization of eVTOL aircraft following the contribution of the Vertical Aerospace Net Assets, and the Company became the parent of VAEL. Accordingly, the consolidated financial statements were prepared as if the Reorganization had been completed prior to the earliest period presented (except for the acquisition of VAEL which was acquired by IIAL in July 2019 as discussed in note 14 Business combinations) using the historical book values of IIAL. Prior to the Reorganization the Vertical Aerospace Net Assets had not presented standalone financial statements, and, as a result, financial information for the period up to July 2020 were derived from IIAL’s historical financial records as if the Vertical Aerospace Net Assets (including VAEL from July 2019) had been a standalone business. Accordingly, the financial information for that period is shown on a carve-out basis to present the results of operations. 2 Significant accounting policies (continued) All transactions and balances between the Vertical Aerospace Net Assets and the Parent Group during the period prior to July 2020 which were not historically settled in cash, were considered to be effectively settled in cash in the consolidated financial statements at the time the transaction was recorded. The total net effect of the settlement of these transactions between the Vertical Aerospace Net Assets and the Parent Group are reflected in the Consolidated statement of cash flows as Movement in net parent investment in financing activity, and in the Consolidated statement of financial position and Statement of changes in equity as Net parent investment. During the period prior to July 2020, the Group’s equity balance represented the excess of total assets over total liabilities and was recorded within the account Net parent investment. Net parent investment represents the cumulative financing by the Parent Group and the Founder in the Vertical Aerospace Net Assets through to the Reorganization. In connection with the Reorganization the Net parent investment balance was reclassified to Other reserves. Assets and liabilities that were specifically identifiable or attributable to the Vertical Aerospace Net Assets have been included in the carve-out financial information, in addition to the assets and liabilities of VAEL after its acquisition in July 2019. The deferred consideration related to the VAEL acquisition with a fair value of £820,000 at the date of acquisition has been reflected in the carve-out financial information up to July 2020. The outstanding deferred consideration balance at July 2020 with a fair value of £542,000 at that date was not included in the Vertical Aerospace Net Assets, and is treated as an increase to Net Parent Investment immediately prior to the reclassification to Other reserves. The carve-out financial information also includes all income and expenses incurred by IIAL up to July 2020 as management believes this to be a reasonable representation, however it may not reflect the income and expenses that would be been incurred if the Vertical Aerospace Net Assets operated as an independent business for the period prior to the Reorganization. Basis of preparation All intercompany balances and transactions have been eliminated in consolidation. The financial statements have been prepared under historical cost accounting rules, apart from certain financial liabilities which are recognised at fair value. If the Company had derivative financial instruments, these would have been measured at fair value. The preparation of financial statements in conformity with IFRS requires the use of certain critical accounting estimates. It also requires management to exercise its judgement in the process of applying the company’s accounting policies. Items included in the financial statements are measured using the currency of the primary economic environment in which the entity and its subsidiaries operate (‘the functional currency’). The financial statements are presented in pounds sterling (‘£’ or ‘GBP’), which is the Group’s functional and presentation currency and all amounts are presented in and rounded to the nearest thousand unless otherwise indicated. ​ 2 Significant accounting policies (continued) Basis of consolidation Vertical Aerospace Group Ltd is the parent of the Group. Details of the subsidiaries are as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Proportion of ​ ​ ​ ​ ​ ​ ​ ​ ownership ​ ​ ​ ​ ​ ​ ​ ​ interest and ​ ​ ​ ​ ​ ​ ​ ​ voting rights held ​ ​ Name of subsidiary Principal activity Registered office 2020 2019 Vertical Advanced Engineering Ltd Sale of engineering consultancy services 140-142 Kensington Church Street, London, W8 4BN UK 100 % 100 % ​ Summary of significant accounting policies and key accounting estimates The principal accounting policies applied in the preparation of these financial statements are set out below. These policies have been consistently applied to all the years presented, unless otherwise stated. Going concern Management has prepared a cash flow forecast for the Group and has considered the ability for the Group to continue as a going concern for the foreseeable future, being at least 12 months after approving these financial statements. The Group is currently in the research and development phase of its journey to commercialization of eVTOL technology. It is generating minimal revenue, has a limited amount of cash on hand and has incurred net losses and net cash outflows from operations since inception. To date, the cash funding for the Group has come from private investors. Since December 31, 2020, the Group has raised £25m through the issue of convertible notes (see Note 27 Non adjusting events after the reporting period) and has also converted a £9m loan to equity. As of December 31, 2020, the Group had approximately £839 thousand of cash and cash equivalents on hand. Prior to the issuance of the financial statements in July 2021, management prepared a cash flow model detailing the cash inflows and outflows of the Group and determined that the Group had sufficient cash to fund its activity for a period of 18 months from the date of approval of the financial statements. Subsequent to the July 2021 release of the financial statements, management increased its investment into research and development activities. The increased activities, including hiring additional engineers and other staff, resulted in increased cash outflows, reducing cash and cash equivalents significantly. The Group is therefore dependent on additional financing for research and development activities and operational activities. Management plans to finance these activities with the proceeds from the contemplated US public listing via a merger with a Special Purpose Acquisition Company (‘SPAC’), which is expected to be completed in the fourth quarter of 2021. The timely realization of the transaction is imperative for the Group’s ability to continue as a going concern. Based on the Group’s cash flow forecast and the need to raise additional capital to finance future operations, management has concluded that there is substantial doubt about the Group’s ability to continue as a going concern. The financial statements have been prepared on a going concern basis and do not include any adjustments to the amounts and classification of assets and liabilities that may be necessary in the event the Group can no longer continue as a going concern. 2 Significant accounting policies (continued) Changes in accounting policy The Group early adopted the following standards and amendments for the first time from the annual reporting period commencing January 1, 2019: ● Definition of Material — amendments to IAS 1 and IAS 8 ● Definition of a Business — amendments to IFRS 3 ● Interest Rate Benchmark Reform — amendments to IFRS 9, IAS 39 and IFRS 7 ● Revised Conceptual Framework for Financial Reporting The amendments listed above did not have any impact on the amounts recognised in prior periods and are not expected to significantly affect the current or future periods. No new accounting standards and interpretations that have been published and are not mandatory for December 31, 2020 reporting periods have been early adopted by the Group or are expected to have a material impact on the Group in current or future reporting periods. Revenue recognition Revenues are minimal to the Group and are generated from the performance of engineering consultancy services to customers. IFRS 15 deals with revenue recognition and establishes principles for reporting useful information to users of financial statements about the nature, amount, timing and uncertainty of revenue and cash flows arising from an entity’s contracts with customers. IFRS principles are applied using the following 5 step model: 1. Identify the contracts with the customer 2. Identify the performance obligations in the contract 3. Determine the transaction price 4. Allocate the transaction price to the performance obligations in the contract 5. Recognise revenue when or as the entity satisfies its performance obligations The revenue for the Group relates solely to engineering consultancy services and revenue is recognised once the Group has satisfied the performance conditions. The contracts that the Group enters into comprise payments when certain milestones are met. Revenue is recognised at each milestone event and only if the milestone is met. Government grants Government grants are recognised as Other operating income and are recognised in the period when the expense to which the grant relates is incurred. Grants are only recognised when there is a signed grant offer letter or equivalent from the government body and there is reasonable assurance that the Group will be able to satisfy all conditions of the grant. 2 Significant accounting policies (continued) Receivables relating to government grants are presented in Trade and other receivables at their fair value. Research and development expenses Research expenditure is charged to the income statement in the period in which it occurred. Development expenditure is recognised as an intangible asset when it is probable that the project will generate future economic benefit, considering factors such as technological, commercial and regulatory feasibility. Other development expenditure is charged to the income statement in the period in which it occurred. Refer to note 3 Critical accounting judgements and key sources of estimation uncertainty for a discussion on the judgement of this classification. The amounts included in research and development expenses include staff costs for staff working directly on research and development projects and for expenses directly attributable to a research project, excluding software costs. Finance income and costs policy Financing expense comprises interest payable on loans from related parties and is recognised in profit or loss using the effective interest method. Interest income and interest payable is recognised in profit or loss as it accrues, using the effective interest method. Foreign currency transactions and balances Transactions in foreign currencies are initially recorded at the functional currency rate prevailing at the date of the transaction. Monetary assets and liabilities denominated in foreign currencies are retranslated into the respective functional currency of the entity at the rates prevailing on the reporting period date. Non-monetary items carried at fair value that are denominated in foreign currencies are retranslated at the rates prevailing on the initial transaction dates. Non-monetary items measured in terms of historical cost in a foreign currency are not retranslated. Tax The tax expense for the period comprises current tax and deferred tax. Tax is recognised in profit or loss, except that a change attributable to an item of income or expense recognised as other comprehensive income is also recognised directly in other comprehensive income. The current income tax charge is calculated on the basis of tax rates and laws that have been enacted or substantively enacted by the reporting date in the countries where the company operates and generates taxable income. Current tax assets and tax liabilities are offset where the entity has a legally enforceable right to offset and intends either to settle on a net basis, or to realize the asset and settle the liability simultaneously. Deferred tax is provided on temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts used for taxation purposes. The following temporary differences are not provided for: the initial recognition of goodwill; the initial recognition of assets or liabilities that affect neither accounting nor taxable profit other than in a business combination, and differences relating to investments in subsidiaries to the extent that they will probably not reverse in the foreseeable future. The amount of deferred tax provided is based on the expected manner of realization or settlement of the carrying amount of assets and liabilities, using tax rates enacted or substantively enacted at the balance sheet date. 2 Significant accounting policies (continued) Deferred tax assets are recognized only if it is probable that future taxable amounts will be available to utilize those temporary differences and losses. Deferred tax assets and liabilities are offset where there is a legally enforceable right to offset current tax assets and liabilities and where the deferred tax balances relate to the same taxation authority. The Group is the recipient of R&D tax credits in the UK. These tax credits are presented within the other operating income. Property, plant and equipment Property, plant and equipment is stated in the statement of financial position at cost, less any subsequent accumulated depreciation and subsequent accumulated impairment losses. The cost of property, plant and equipment includes directly attributable incremental costs incurred in their acquisition and installation. Depreciation Depreciation is charged so as to write off the cost of assets over their estimated useful lives, as follows: ​ ​ ​ ​ Asset class Depreciation method and rate Leasehold property ​ Straight line over term of lease Computer equipment ​ 3 years straight line Leasehold improvements ​ 5  ​ Intangible assets Intangible assets are carried at cost, less accumulated amortization and impairment losses. Computer software licences acquired for use within the Company are capitalised as an intangible asset on the basis of the costs incurred to acquire and bring to use the specific software. Amortization Amortization is provided on intangible assets so as to write off the cost on a straight line basis, less any estimated residual value, over their expected useful economic life as follows: ​ ​ ​ ​ Asset class Amortization method and rate IT software ​ 3 years straight line ​ Business combinations and goodwill The purchase method is used to account for the acquisition of subsidiaries by the Group. The cost of an acquisition is measured as the fair value of the assets given, equity instruments issued and liabilities incurred or assumed at the date of exchange. Identifiable assets acquired and liabilities and contingent liabilities assumed are measured initially at their fair values on the date of acquisition. The excess of the cost of acquisition over the fair value of the Group’s share of identifiable net assets, including intangible assets acquired, is recorded as goodwill. If the cost of acquisition is less than the fair value of the Group’s share of net assets of the subsidiary acquired, the difference is recognised directly in the income statement. 2 Significant accounting policies (continued) Goodwill is stated at cost, less any accumulated impairment losses. Goodwill is tested annually for impairment or when there are indicators of impairment. Cash and cash equivalents Cash and cash equivalents include cash at bank and in hand. Trade and other receivables Trade receivables are amounts due from customers for services performed in the ordinary course of business. If collection is expected in one year or less (or in the normal operating cycle of the business if longer), they are classified as current assets. If not, they are presented as non-current assets. Trade receivables are recognised initially at the transaction price. They are subsequently measured at amortised cost using the effective interest method, less provision for impairment. A provision for the impairment of trade receivables is established using an expected credit loss model as per the Group’s accounting policy for the impairment of financial assets. Other receivables represent amounts due from parties who are not customers and are measured at amortized cost. Trade and other payables Trade and other payables are obligations to pay for goods or services that have been acquired in the ordinary course of business from suppliers. Accounts payable are classified as current liabilities if payment is due within one year or less (or in the normal operating cycle of the business if longer). If not, they are presented as non-current liabilities. Trade and other payables are recognised initially at the transaction price and subsequently measured at amortized cost using the effective interest method. Borrowings All borrowings are initially recorded at the amount of proceeds received, net of transaction costs. Borrowings are subsequently carried at amortized cost, with the difference between the proceeds, net of transaction costs, and the amount due on redemption being recognised as a charge to the income statement over the period of the relevant borrowing. Borrowings are classified as current liabilities unless the company has an unconditional right to defer settlement of the liability for at least 12 months after the reporting date. Provisions Provisions are recognised when the company has a present obligation (legal or constructive) as a result of a past event, it is probable that the group will be required to settle that obligation and a reliable estimate can be made of the amount of the obligation. Provisions are measured at management’s best estimate of the expenditure required to settle the obligation at the reporting date and are discounted to present value where the effect is material. 2 Significant accounting policies (continued) Leases Definition A lease is a contract, or part of a contract, that conveys the right to use an asset or a physically distinct part of an asset (‘the underlying asset’) for a period of time in exchange for consideration. Further, the contract must convey the right to the company to control the asset or a physically distinct portion thereof. A contract is deemed to convey the right to control the underlying asset, if throughout the period of use, the company has the right to: Obtain substantially all the economic benefits from the use of the underlying asset, and; Direct the use of the underlying asset (eg direct how and for what purpose the asset is used). Initial recognition and measurement The company initially recognizes a lease liability for the obligation to make lease payments and a right-of-use asset for the right to use the underlying asset for the lease term. The lease liability is measured at the present value of the lease payments to be made over the lease term. The lease payments include fixed payments, purchase options at exercise price (where payment is reasonably certain), expected amount of residual value guarantees, termination option penalties (where payment is considered reasonably certain) and variable lease payments that depend on an index or rate. The right-of-use asset is initially measured at the amount of the lease liability, adjusted for lease prepayments, lease incentives received, the company’s initial direct costs (e.g., commissions) and an estimate of restoration, removal and dismantling costs. Subsequent measurement After the commencement date, the company measures the lease liability by: (a) Increasing the carrying amount to reflect interest on the lease liability; (b) Reducing the carrying amount to reflect the lease payments made; and (c) Re-measuring the carrying amount to reflect any reassessment or lease modifications or to reflect revised in substance fixed lease payments or on the occurrence of other specific events. Interest on the lease liability in each period during the lease term is the amount that produces a constant periodic rate of interest on the remaining balance of the lease liability. Interest charges are included in finance costs in the income statement, unless the costs are included in the carrying amount of another asset applying other applicable standards. Variable lease payments not included in the measurement of the lease liability, are included in operating expenses in the period in which the event or condition that triggers them arises. The related right-of-use asset is accounted for using the Cost model in IAS 16 and depreciated and charged in accordance with the depreciation requirements of IAS 16 Property, Plant and Equipment as disclosed in the accounting policy for Property, Plant and Equipment. Adjustments are made to the carrying value of the right of use asset where the lease liability is re-measured in accordance with the above. Right of use assets are tested for impairment in accordance with IAS 36 Impairment of assets as disclosed in the accounting policy in impairment. 2 Significant accounting policies (continued) Short term and low value leases The company has made an accounting policy election, by class of underlying asset, not to recognize lease assets and lease liabilities for leases with a lease term of 12 months or less (i.e., short-term leases). The company has made an accounting policy election on a lease-by-lease basis, not to recognize lease assets on leases for which the underlying asset is of low value. Lease payments on short term and low value leases are accounted for on a straight line bases over the term of the lease or other systematic basis if considered more appropriate. Short term and low value lease payments are included in operating expenses in the income statements. Impairment (non-financial assets) All assets are reviewed for impairment when there is an indicator of impairment. In addition, goodwill is reviewed for impairment at least annually. An impairment loss is recognised whenever the carrying amount of an asset or its cash-generating unit exceeds its recoverable amount. Share capital Ordinary shares are classified as equity. Equity instruments are measured at the fair value of the cash or other resources received or receivable, net of the direct costs of issuing the equity instruments. If payment is deferred and the time value of money is material, the initial measurement is on a present value basis. Defined contribution pension obligation A defined contribution plan is a pension plan under which fixed contributions are paid into a separate entity and has no legal or constructive obligations to pay further contributions if the fund does not hold sufficient assets to pay all employees the benefits relating to employee service in the current and prior periods. For defined contribution plans contributions are paid into publicly or privately administered pension insurance plans on a mandatory or contractual basis. The contributions are recognized as employee benefit expense when they are due. Share based payments Vertical Aerospace Group Ltd operates an equity-settled, share based compensation plan, under which the entity receives services from employees as consideration for equity instruments (share options or shares) of Vertical Aerospace Group Ltd. The fair value of the employee services received in exchange for the grant of the shares is recognised as an expense. The total amount to be expensed is determined by reference to the fair value of the shares granted: ● including any market performance conditions (for example, an entity’s share price); ● excluding the impact of any service and non-market performance vesting conditions (for example, remaining an employee of the entity over a specified time period); and ● including the impact of any non-vesting conditions. 2 Significant accounting policies (continued) Non-market performance and service conditions are included in assumptions about the number of shares that are expected to vest. The total expense is recognized over the vesting period, which is the period over which all of the specified vesting conditions are to be satisfied. In addition, in some circumstances employees may provide services in advance of the grant date and therefore, the grant date fair value is estimated for the purposes of recognizing the expense during the period between service commencement period and grant date. The fair value of ordinary shares in the Group are interpolated from externally set valuations based on investment offers received from third parties (whether accepted or not). In the absence of third party investment offers, internal valuations are used and are benchmarked against third party investment offers when they become available. Further assumptions are applied to the imputed valuations to reflect factors such as lack of marketability and control, including lack of voting rights, where appropriate. At the end of each reporting period, the Group revises its estimates of the number of shares that are expected to vest based on the non-market vesting conditions. They recognize the impact of the revision to original estimates, if any, in the income statement, with a corresponding adjustment to equity. Financial instruments Initial recognition Financial assets and financial liabilities comprise all assets and liabilities reflected in the statement of financial position, although excluding property, plant and equipment, intangible assets, deferred tax assets, prepayments, deferred tax liabilities and employee benefits plan. The company recognizes financial assets and financial liabilities in the statement of financial position when, and only when, the company becomes party to the contractual provisions of the financial instrument. Financial assets are initially recognized at fair value. Financial liabilities are initially recognized at fair value, representing the proceeds received net of premiums, discounts and transaction costs that are directly attributable to the financial liability. All regular way purchases and sales of financial assets and financial liabilities classified as fair value through profit or loss (“FVTPL”) are recognized on the trade date, i.e. the date on which the company commits to purchase or sell the financial assets or financial liabilities. All regular way purchases and sales of other financial assets and financial liabilities are recognized on the settlement date, i.e. the date on which the asset or liability is received from or delivered to the counterparty. Regular way purchases or sales are purchases or sales of financial assets that require delivery within the time frame generally established by regulation or convention in the market place. Subsequent to initial measurement, financial assets and financial liabilities are measured at either amortized cost or fair value. ​ 2 Significant accounting policies (continued) Classification and measurement Financial instruments are classified at inception into one of the following categories, which then determine the subsequent measurement methodology: - I. Financial Assets Financial assets are classified into one of the following three categories: ● financial assets at amortized cost; ● financial assets at fair value through other comprehensive income (FVTOCI); or ● financial assets at fair value through the profit or loss (FVTPL). Criteria for measurement of Financial asset at amortized cost A financial asset is measured at amortized cost if it meets both of the following conditions and is not designated as at FVTPL: ● the assets are held within a business model whose objective is to hold assets in order to collect contractual cash flows; and ● the contractual terms of the financial assets give rise on specified dates to cash flows that are solely payments of principal and interest on the principal amount outstanding. If either of the above two criteria is not met, the financial assets are classified and measured at fair value through the profit or loss (FVTPL). Additionally, if a financial asset meets the amortized cost criteria, the company may choose to designate the financial asset at FVTPL. Such an election is irrevocable and applicable only if the FVTPL classification significantly reduces a measurement or recognition inconsistency. II. Financial liabilities Financial liabilities are classified into one of the following two categories: ● financial liabilities at amortized cost; or ● financial liabilities at fair value through the profit or loss (FVTPL). Financial liabilities at amortized cost All financial liabilities, other than those classified as financial liabilities at FVTPL, are measured at amortized cost using the effective interest rate method. Financial liabilities at fair value through the profit or loss Financial liabilities not measured at amortized cost are classified and measured at FVTPL. The classification of financial instruments is as follows: 2 Significant accounting policies (continued) Amortized cost Derecognition of financial assets and liabilities Financial assets are derecognized when the contractual rights to the cash flow have expired or been transferred together with substantially all risks and rewards. Financial liabilities are derecognized when they are extinguished. Impairment of financial assets Measurement of Expected Credit Losses The company recognises loss allowances for expected credit losses (ECL) on financial instruments that are not measured at FVPTL, namely Trade and other receivables. The company applies the simplified approach, which requires expected lifetime losses to be recognised from initial recognition of the receivables. To measure the expected credit losses, trade receivables have been grouped based on shared credit risk characteristics and the days past due. The expected loss rates are based on the payment profiles of sales over a period of 18 months before 31 December 2020 and the corresponding historical credit losses experienced within this period. The historical loss rates are adjusted to reflect current and forward-looking information on macroeconomic factors affecting the ability of the customers to settle the receivables.

Critical accounting judgement_2

Critical accounting judgements and key sources of estimation uncertainty	6 Months Ended	12 Months Ended
	Jun. 30, 2021	Dec. 31, 2020
Critical accounting judgements and key sources of estimation uncertainty
Critical accounting judgements and key sources of estimation uncertainty	3 Capitalization of development costs The business incurs a significant amount of research and development cost. The point in time at which the business begins capitalization of any project is a critical accounting judgement. The business assesses the technology readiness level of its research and development projects, along with the commercialization potential and guidance from the accounting standards to assess whether a particular development project should be capitalized or not. Costs for internally generated research and development are capitalized only if: ● the product or process is technically feasible; ● adequate resources are available to successfully complete the development; ● the benefits from the assets are demonstrated; ● the costs attributable to the projects are reliably measured; ● the Group intends to produce and market or use the developed product or process and can demonstrate its market relevance. Management has concluded that for the current and comparative period, none of the projects met the requirements for capitalization. Whilst management recognizes a market for the use of eVTOLs, the market is not yet established or proven. Additionally, the Group is developing new technologies and there are still uncertainties about the successful completion of this development. If costs relating to a research and development project are not capitalized, they are expensed as incurred and presented in Research and development costs in the Income statement.	3 Critical accounting judgements and key sources of estimation uncertainty Capitalization of development costs The business incurs a significant amount of research and development cost. The point in time at which the business begins capitalization of any project is a critical accounting judgement. The business assesses the technology readiness level of its research and development projects, along with the commercialization potential and guidance from the accounting standards to assess whether a particular development project should be capitalized or not. Costs for internally generated research and development are capitalized only if: ● the product or process is technically feasible; ● adequate resources are available to successfully complete the development; ● the benefits from the assets are demonstrated; ● the costs attributable to the projects are reliably measured; ● the Group intends to produce and market or use the developed product or process and can demonstrate its market relevance. Management has concluded that in 2020 and 2019, none of the projects met the requirements for capitalization. Whilst Management recognizes a market for the use of eVTOLs, the market is not yet established or proven. Additionally, the Group is developing new technologies and there are still uncertainties about the successful completion of this development. 3 Critical accounting judgements and key sources of estimation uncertainty (continued) If costs relating to a research and development project are not capitalized, they are expensed as incurred and presented in Research and development costs in the Income statement.

Operating segments_2

Operating segments	6 Months Ended	12 Months Ended
	Jun. 30, 2021	Dec. 31, 2020
Operating segments
Operating segments	4 The Group operates as a single operating segment and one reporting segment, being the development and commercialization of eVTOL technology. The Chief Operating Decision Maker, being the Chief Executive Officer, reviews all financial information as a single segment.	4 Operating segments The Group operates as a single operating segment and one reporting segment, being the development and commercialization of eVTOL technology. The Chief Operating Decision Maker, being the Chief Executive Officer, reviews all financial information as a single segment.

Revenue_2

Revenue	6 Months Ended	12 Months Ended
	Jun. 30, 2021	Dec. 31, 2020
Revenue
Revenue	5 The analysis of the company’s revenue for the period from continuing operations is as follows: ​ ​ ​ ​ ​ ​ ​ 2021 2020 ​ ​ £ 000 ​ £ 000 Rendering of engineering consultancy services 66 49 ​	5 Revenue The analysis of the company’s revenue for the year from continuing operations is as follows: ​ ​ ​ ​ ​ ​ ​ 2020 2019 ​ ​ £ 000 ​ £ 000 Rendering of engineering consultancy services 87 70 ​ All revenue is generated within the UK, based on the location where the engineering consultancy are delivered.

Other operating income_2

Other operating income	6 Months Ended	12 Months Ended
	Jun. 30, 2021	Dec. 31, 2020
Other operating income
Other operating income	6 The analysis of the Group’s other operating income for the period is as follows: ​ ​ ​ ​ ​ ​ ​ 6 months ended 6 months ended ​ ​ June 30, ​ June 30, ​ ​ 2021 ​ 2020 ​ ​ £ 000 ​ £ 000 Government grants 8,999 — R&D tax credit 687 — ​ 9,686 — ​ Government grants At June 30, 2021, the Company had a receivable of £8,943,000 from Aerospace Technology Institute (ATI) relating to the research and development of eVTOL technologies. The grant is made to fund research and development expenditure, and is recognised in the period to which the expense it is intended to fund relates. R&D tax credit scheme The R&D tax credit relates to the UK’s research and development expenditure credit scheme.	6 Other operating income The analysis of the Group’s other operating income for the year is as follows: ​ ​ ​ ​ ​ ​ ​ 2020 2019 ​ ​ £ 000 ​ £ 000 Government grants 1,989 — R&D tax credit 328 399 ​ 2,317 399 ​ Government grants At December 31, 2020, the Group had a receivable of £1,989,000 from Aerospace Technology Institute (ATI) relating to the research and development of eVTOL technologies. The grant is made to fund research and development expenditure, and is recognised in the period to which the expense it is intended to fund relates. The amounts outstanding at December 31, 2020 were received in February 2021. R&D tax credit scheme The R&D tax credit relates to the UK’s research and development expenditure credit scheme.

Expenses by nature_2

Expenses by nature	6 Months Ended	12 Months Ended
	Jun. 30, 2021	Dec. 31, 2020
Expenses by nature
Expenses by nature	7 Included within administrative expenses and research and development expenses are the following expenses/(income). ​ ​ ​ ​ ​ ​ ​ 6 months ended 6 months ended ​ ​ June 30, ​ June 30, ​ ​ 2021 ​ 2020 ​ ​ £ 000 ​ £ 000 Staff costs excluding share based payments 5,546 3,580 Share based payment expenses 76 — Software costs 497 271 Depreciation expense 162 134 Depreciation on right of use assets – Property 70 70 Amortization expense 168 117 Consultancy costs 1,501 523 Foreign exchange (losses)/gains (16) 26 Expense on short term leases 30 36 Research and development components 2,478 1,909 Related party administrative expenses 127 72 Legal costs 2,060 8 Other administrative expenses 1,574 208 Other research and development costs 625 115 ​ 14,898 7,068 ​	7 Expenses by nature Included within administrative expenses and research and development expenses are the following expenses/(income). ​ ​ ​ ​ ​ ​ ​ 2020 2019 ​ ​ £ 000 ​ £ 000 Staff costs excluding share based payment expenses 8,445 3,642 Share based payment expenses 96 — Software costs 579 191 Depreciation expense 279 89 Depreciation on right of use assets – Property 140 171 Amortisation expense 263 70 Consultancy costs 745 518 Foreign exchange gains/(losses) 26 (6) Expense on short term leases 64 8 Research and development components 2,095 1,933 Related party administrative expenses 144 144 Other administrative expenses 539 929 Other research and development costs 460 163 Total administrative and research and development expenses 13,875 7,851 ​ Staff costs excluding share based payment expenses relates primarily to salary and salary related expenses, including social secuirty and pension contributions. Research and development components represents the amount spent on hardware and testing for building eVTOL prototypes.

Finance costs

Finance costs	12 Months Ended
	Dec. 31, 2020
Finance costs
Finance costs	8 Finance costs ​ ​ ​ ​ ​ ​ ​ 2020 2019 ​ ​ £ 000 ​ £ 000 Finance costs Interest on loans from related parties (709) — Discount unwind on deferred consideration (19) (14) Interest expense on leases-Property (74) (46) Other finance costs (5) (6) Total finance costs (807) (66) ​ Interest on loans from related parties represents the interest charge by Imagination Industries Ltd, a company wholly owned by Stephen Fitzpatrick. Discount unwind on deferred consideration represents the discount unwind on deferred consideration payable from the acquisition of Vertical Advanced Engineering Ltd. Other finance costs represent discount unwind on provisions for dilapidations.

Loss per share

Loss per share	12 Months Ended
	Dec. 31, 2020
Earnings per share [abstract]
Loss per share	9 Loss per share Basic earnings per share, in this case a loss per share, is calculated by dividing the loss for the year attributable to ordinary equity holders of the parent by the weighted average number of ordinary shares outstanding during the year. Diluted earnings per share is calculated by dividing the loss attributable to ordinary equity holders of the parent by the weighted average number of ordinary shares outstanding during the year plus the weighted average number of ordinary shares that would be issued on conversion of all the dilutive potential ordinary shares into ordinary shares. The calculation of loss per share is based on the following data: ​ ​ ​ ​ ​ ​ ​ 2020 2019 ​ ​ £ 000 ​ £ 000 Net (12,326) (7,484) ​ Number of share in issue: ​ ​ ​ ​ ​ ​ ​ ​ 2020 ​ 2019 ​ No. of shares No. of shares Weighted average 100,000 100,000 ​ The loss per share calculation does not include B ordinary shares as these are non dividend bearing and therefore do not participate in the profit or loss for the period. Due to the Reorganization as described in note 2 Significant accounting policies, the number of shares at the 2019 reporting period has been restated to reflect the current share structure of in order to present loss per share on a comparable basis. Vertical Aerospace Group Ltd was incorporated in May 2020, therefore, were it not for the restatement due to the Reorganization, the number of shares would be nil. ​ ​ ​ ​ ​ ​ ​ 2020 2019 ​ ​ £ ​ £ Basic and diluted loss per share (123.26) (74.84) ​

Taxation

Taxation	12 Months Ended
	Dec. 31, 2020
Taxation
Taxation	10 Taxation Tax charged/(credited) in the income statement ​ ​ ​ ​ ​ ​ ​ 2020 2019 ​ ​ £ 000 ​ £ 000 Current taxation UK corporation tax (4) 30 ​ The tax on profit before tax for the year is higher than the standard rate of corporation tax in the UK (2019 — higher than the standard rate of corporation tax in the UK) of 19% (2019 – 19%). The differences are reconciled below: ​ ​ ​ ​ ​ ​ ​ 2020 2019 ​ ​ £ 000 ​ £ 000 Loss before tax (12,322) (7,514) Corporation tax benefit at standard rate 2,341 1,428 Decrease in tax benefit from effect of expenses not deductible in determining taxable profit (tax loss) (135) — Decrease in tax benefit from tax losses for which no deferred tax asset was recognised (841) — Decrease in tax benefit arising from group relief tax reconciliation (pre Reorganization) (1,369) (1,428) Deferred tax credit from unrecognised temporary difference from a prior period — 30 Total tax (expense)/benefit (4) 30 ​ The main rate of UK corporation tax for the years to March 31, 2019, March 31, 2020 and March 31, 2021 was 19%. At the March Budget 2021, the UK government announced that the Corporation Tax main rate (for all profits except ring fence profits) for the years starting April 1, 2023 be 25%. At the time of signing these financial statements the change had not been substantively enacted by the UK government. There are £4,476,000 of unused tax losses (2019 — £Nil) for which no deferred tax asset is recognised in the statement of financial position. The tax losses have no expiry date. No deferred tax assets or liabilities have been recognised as the Group has a surplus of UK tax losses which offset in the same jurisdiction as any deferred tax liabilities. A deferred tax asset for the surplus tax losses has not been recognised as the Group has not yet been profitable and therefore there is uncertainty over the availability of future taxable profits against which to utilise the tax losses.

Property, plant and equipment

Property, plant and equipment	12 Months Ended
	Dec. 31, 2020
Property, plant and equipment
Property, plant and equipment	11 Property, plant and equipment ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Leasehold ​ ​ ​ Note improvements Office equipment Total ​ ​ ​ ​ £ 000 ​ £ 000 ​ £ 000 Cost or valuation At January 1, 2019 ​ 25 53 78 Additions ​ 1,311 216 1,527 Acquired through business combinations 14 14 35 49 December 31, 2019 ​ 1,350 304 1,654 Additions ​ 18 137 155 December 31, 2020 ​ 1,368 441 1,809 Depreciation ​ At January 1, 2019 ​ 1 18 19 Charge for year ​ 31 58 89 At December 31, 2019 ​ 32 76 108 Charge for the year ​ 174 105 279 At December 31, 2020 ​ 206 181 387 Net book value ​ At December 31, 2020 ​ 1,162 260 1,422 At December 31, 2019 ​ 1,318 227 1,545 At January 1, 2019 ​ 24 35 59 ​ Leasehold improvements represents improvements to leased property in Bristol, UK. All property, plant and equipment is attributable to the UK.

Right of use assets

Right of use assets	12 Months Ended
	Dec. 31, 2020
Right of use assets
Right of use assets	12 Right of use assets ​ ​ ​ ​ ​ Property ​ ​ £ 000 Cost or valuation At January 1, 2019 867 Additions 578 At December 31, 2019 1,445 At December 31, 2020 1,445 Depreciation At January 1, 2019 72 Charge for year 171 At December 31, 2019 243 Charge for the year 140 At December 31, 2020 383 Net book value At December 31, 2020 1,062 At December 31, 2019 1,202 As at January 1, 2019 795 ​ The right of use asset is a leasehold property at Camwal Court, Bristol, UK. Further information on the lease liability of this lease can be found in note 18 Leases.

Intangible assets

Intangible assets	12 Months Ended
	Dec. 31, 2020
Intangible assets
Intangible assets	13 Intangible assets ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Note Goodwill IT software Total ​ ​ ​ ​ £ 000 ​ £ 000 ​ £ 000 Cost or valuation At January 1, 2019 ​ ​ — 56 56 Additions ​ ​ — 575 575 Acquired through business combinations 14 1,473 51 1,524 At December 31, 2019 ​ ​ 1,473 682 2,155 Additions ​ ​ — 233 233 At December 31, 2020 ​ ​ 1,473 915 2,388 Amortisation ​ ​ At January 1, 2019 ​ ​ — 25 25 Amortisation charge ​ ​ — 70 70 At December 31, 2019 ​ ​ — 95 95 Amortisation charge ​ ​ — 263 263 At December 31, 2020 ​ ​ — 358 358 Net book value ​ ​ At December 31, 2020 ​ ​ 1,473 557 2,030 At December 31, 2019 ​ ​ 1,473 587 2,060 At January 1, 2019 ​ ​ — 31 31 ​ The amortisation charge of £263,000 (2019: 70,000) is shown in Administrative expenses. All intangible assets are attributable to the UK. The goodwill was recognised on the acquisition of Vertical Advanced Engineering Ltd in July 2019. See note 14 Business combinations. IT software is third party software licences which includes perpetual licences and implementation costs. Included within IT software are product lifecycle management software licences with a carrying value of £263,000 (2019: £406,000) and a remaining useful life of 22 months (2019: 34 months ). There was no indication of impairment of the software or goodwill during the year. The carrying amounts of the software was reviewed at the reporting date and management determined that there were no indicators of impairment. When performing the impairment testing for goodwill, management views the business as one cash generating unit (‘CGU’) being the commercialization and development of eVTOLs. The recoverable amount for the CGU was determined as its fair value less costs of disposal. The key assumption on which management has based its impairment assessment in the fair value of level 2 equity instruments which approximate to the value of the CGU — based on recent transactions and potential future transactions of the Group’s level 2 equity instruments.

Business combinations

Business combinations	12 Months Ended
	Dec. 31, 2020
Business combinations
Business combinations	14 Business combinations On July 29, 2019, acquired 100% of the issued share capital of MGI Motorsport Ltd (subsequently renamed to Vertical Advanced Engineering Ltd), obtaining control. The principal activity of Vertical Advanced Engineering Ltd is the supply of engineering consultancy services. Vertical Advanced Engineering Ltd was acquired in order to acquire Formula 1 expertise, resulting in a Group which combines the Formula 1 and aerospace skillsets. The amounts recognised in respect of the identifiable assets acquired and liabilities assumed are as set out in the table below: ​ ​ ​ ​ ​ December 31, ​ 2019 ​ ​ £ 000 Assets and liabilities acquired Financial assets 352 Property, plant and equipment 49 Identifiable intangible assets 51 Financial liabilities (96) Total identifiable net assets 356 Goodwill 1,473 Total consideration 1,829 Satisfied by: Cash 1,009 Fair value of deferred consideration 820 Total consideration transferred 1,829 Cash flow analysis: Cash consideration 1,009 Less: cash and cash equivalent balances acquired (278) Net cash outflow arising on acquisition 731 ​ Deferred consideration of £900,000 is payable in three equal instalments of £300,000 per annum over the course of 3 years . The deferred consideration is recognised at amortized cost. Due to the Reorganization, the Group has no deferred consideration payable at December 31, 2020; refer to note 2 Significant accounting policies. Included within Financial assets acquired are trade receivables with a fair value and gross contractual value of £57,000. All the trade receivables have since been collected. The goodwill of £1,483,000 arising from the acquisition consists of workforce and Formula 1 expertise. None of the goodwill is expected to be deductible for UK corporation tax purposes. Vertical Advanced Engineering Ltd contributed £70,000 revenue and £4,000 to the company’s profit for the period between the date of acquisition and the 2019 balance sheet date. If the acquisition of Vertical Advanced Engineering Ltd had been completed on the first day of the 2019 financial year, company revenues for the period would have been £509,000 and company loss would have been £8,045,000.

Trade and other receivables

Trade and other receivables	12 Months Ended
	Dec. 31, 2020
Trade and other receivables
Trade and other receivables	15 Trade and other receivables ​ ​ ​ ​ ​ ​ ​ ​ December 31, ​ December 31, ​ 2020 2019 ​ ​ £ 000 ​ £ 000 Trade receivables — 41 Government grants receivable 1,989 — Prepayments 733 334 Other receivables 810 1,095 ​ 3,532 1,470 ​ Included within Other receivables is £328,000 for the R&D tax credit receivable (2019: £549,000). The fair value of trade and other receivables classified as financial instruments are disclosed in note 23 Financial instruments. Expected credit losses were not significant in 2020 or 2019. The Group’s exposure to credit and market risks, including impairments and allowances for credit losses, relating to trade and other receivables is disclosed in note 24 Financial risk management and impairment of financial assets.

Share capital and other reserve

Share capital and other reserves	6 Months Ended	12 Months Ended
	Jun. 30, 2021	Dec. 31, 2020
Share capital.
Share capital and other reserves	8 Allotted, called up and fully paid shares ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ June 30, ​ December 31, ​ ​ 2021 ​ 2020 ​ ​ No. ​ £ ​ No. ​ £ A ordinary of £0.00001 each 123,220 1.23 100,000 1.00 B ordinary of £0.00001 each 4,832 0.05 4,832 0.05 Z ordinary of £0.00001 each 5,804 0.06 — — ​ 133,856 1.34 104,832 1.05 ​ New shares allotted During the period 23,220 A ordinary shares having an aggregate nominal value of £0.2322 were allotted for an aggregate consideration of £9,000,000 and a weighted average fair value per share of £387.60, being the fair value at the time, which was based on investment offers from external third parties received at the time. There were no expected dividends or other features of the shares that needed to be incorporated into the valuation.. The shares were issued to Stephen Fitzpatrick in exchange for releasing a loan due to him. Share premium of £9,000,000 was recognised on issue and there were no transaction costs. On 10 June 2021, in connection with the potential transaction with Broadstone Acquisition Corp., 5,804 Z shares in Vertical Aerospace Group Ltd, having a probability weighted fair value per share of £2,884, were issued to American Airlines, Inc. for a total consideration of £0.06. In return, American Airlines, Inc. entered into certain agreements regarding the ongoing commitment to commercialization of eVTOL technology. The issuance of these shares resulted in an expense being recognized in accordance with IFRS 2 and an increase in share premium of £16,738,000. The Z shares carry full dividend and voting rights. The Z shares only share in other distributions of capital in the event of a combination with a special purpose acquisition company (‘SPAC transaction’). The valuation of the Z shares for the purposes of IFRS 2 was made with reference to the ongoing transaction with Broadstone Acquisition Corp, subject to certain discounts due to restrictions placed on the Z shares and their conversion to shares in the newly formed public company should the SPAC transaction be consummated as intended. Restrictions on the shares include a period of restrictions on sale of the shares in the American Lock Up Agreement, and a call option agreement between Vertical Aerospace Ltd., a Cayman Islands exempted company (“Pubco”), and American Airlines Inc., the Call Option Agreement. A probability adjustment was also made for the value of the shares if the transaction is not consummated as intended. Expected dividends were not incorporated into the valuation. The Call Option Agreement, which was removed from the fair value of the underlying shares granted, had the following inputs: ​ ​ ​ ​ ​ June 10, ​ ​ 2021 Share price at date of grant ($) 9.93 Option strike price ($) 18.00 Expected volatility (%) 75.00 Maximum term to exercise (years) 3 and 4 Risk-free interest rate (%) 0.75 ​	16 Share capital and other reserves Allotted, called up and fully paid shares ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, December 31, ​ 2020 2019 ​ No. £ No. £ A ordinary of £0.00001 each 100,000 1.00 100,000 1.00 B ordinary of £0.00001 each 4,832 0.05 4,832 0.05 ​ 104,832 1.05 104,832 1.05 ​ The 2019 share capital is the deemed share capital based on the structure at December 31, 2020 in line with the treatment of the Reorganization. Refer to note 2 Significant accounting policies. In addition to the allotted shares, a further 25,973 B ordinary shares have been authorized for allotment to fulfil future option exercises. No other shares had been authorized for allotment at December 31, 2020. A ordinary shares have full voting rights, full dividend rights. B ordinary shares have no voting or dividend rights and have rights to capital distribution on liquidation on par with A ordinary shares. Options have been granted to employees to be able to acquire B shares. Refer to note 22 Share-based payments. Other reserves Other reserves comprises capital contributions from shareholders. In 2020, a capital contribution of £4,160,000 arose on the Reorganization. Refer to note 2 Significant accounting policies. ​ 16 Share capital and other reserves (continued) Net parent investment The net parent investment relates to money invested by the parent prior to the transfer of business on July 1, 2020 as described in more detail in note 2 Significant accounting policies. Cash investments of £7,130,000 were received in the 6 months to June 30, 2020 (full year 2019: £11,003,000). On July 1, 2020, in line with the Reorganization accounting, the total balance of £4,160,000 was reclassified to Other reserves.

Loans from related parties_2

Loans from related parties	12 Months Ended
	Dec. 31, 2020
Loans from related parties
Loans from related parties	17 Loans from related parties ​ ​ ​ ​ ​ ​ ​ ​ December 31, ​ December 31, ​ 2020 2019 ​ ​ £ 000 ​ £ 000 Current loans and borrowings Loans from related parties 6,309 — ​ Loans from related parties represents a loan from Imagination Industries Ltd, a company wholly owned by Stephen Fitzpatrick. Movements in the year were as follows: ​ ​ ​ ​ ​ ​ ​ 2020 2019 ​ ​ £ 000 ​ £ 000 As at January 1 — — Amounts advanced 5,600 — Interest charged 709 — As at December 31 6,309 — ​ The loans with Imagination Industries Ltd attracted an interest rate of 30% (2019: not applicable) and are repayable on demand. The loans and borrowings classified as financial instruments are disclosed in note 23 Financial instruments. The company’s exposure to market and liquidity risk; including maturity analysis, in respect of loans and borrowings is disclosed in note 24 Financial risk management and impairment of financial assets.

Leases

Leases	12 Months Ended
	Dec. 31, 2020
Leases
Leases	18 Leases The balance sheet shows the following amounts relating to lease liabilities: ​ ​ ​ ​ ​ ​ ​ ​ December 31, ​ December 31, ​ 2020 2019 ​ ​ £ 000 ​ £ 000 Long term lease liabilities 846 947 Current lease liabilities 175 219 ​ 1,021 1,166 ​ 18 Leases (continued) Lease liabilities maturity analysis A maturity analysis of lease liabilities based on undiscounted gross cash flow is reported in the table below: ​ ​ ​ ​ ​ ​ ​ ​ December 31, ​ December 31, ​ 2020 2019 ​ ​ £ 000 ​ £ 000 Less than one year 175 219 Within 2 – 5 years 700 700 More than 5 years 397 572 Total lease liabilities (undiscounted) 1,272 1,491 ​ Total cash outflows related to leases Total cash outflows related to leases are presented in the table below: ​ ​ ​ ​ ​ ​ ​ ​ December 31, ​ December 31, Payment 2020 2019 ​ ​ £ 000 ​ £ 000 Right of use assets 220 130 Low value leases — 2 Short term leases 64 8 Total cash outflow 284 140 ​ A reconciliation of the finance lease creditors is shown below: ​ ​ ​ ​ ​ £000 As at January 1, 2019 673 Additions due to changes in estimates 577 Interest element of payments to finance lease creditors (46) Principal element of payments to finance lease creditors (84) Interest expense on leases 46 As at December 31, 2019 1,166 Interest element of payments to finance lease creditors (74) Principal element of payments to finance lease creditors (145) Interest expense on leases 74 As at December 31, 2020 1,021 ​ In 2018, the Company entered into a 10 year lease agreement with a 5 year option to terminate for a property in Bristol, UK. The right of use asset was originally valued using the 5 year period. In 2019, after a refurbishment of the premises, management revised its estimate to the full 10 year lease, resulting in an addition to the right of use asset and an increase in the long term lease liability. The Group also uses serviced office space which is cancellable at short notice. Such leases are accounted for as short term leases. Refer to note 7 Expenses by nature. The cost, depreciation charge and carrying value for the right-of-use asset is disclosed in note 12 Right of use assets. The interest expense on lease liabilities is disclosed in note 8 Finance costs.

Provisions

Provisions	12 Months Ended
	Dec. 31, 2020
Provisions
Provisions	19 Provisions ​ ​ ​ ​ ​ ​ Dilapidation ​ Provision ​ ​ £ 000 As at January 1, 2019 77 Unwinding of discount 6 As at December 31, 2019 83 Unwinding of discount 5 As at December 31, 2020 88 ​ The dilapidation provision was recognized as a result of the obligation to return the leased property in Bristol, UK to its original condition at the end of the lease which currently expires in 2028. The provision is recognized at amortized cost with discount unwind being recognized each year. The provision is expected to be utilized at the end of the lease period.

Trade and other payables

Trade and other payables	12 Months Ended
	Dec. 31, 2020
Trade and other payables
Trade and other payables	20 Trade and other payables Amounts falling due within one year: ​ ​ ​ ​ ​ ​ ​ ​ December 31, ​ December 31, ​ 2020 2019 ​ ​ £ 000 ​ £ 000 Trade payables 846 703 Accrued expenses 1,226 356 Amounts due to related parties 56 4 Social security and other taxes 203 — Outstanding defined contribution pension costs 70 — Other payables — 8 Deferred consideration payable — 300 ​ 2,401 1,371 ​ Amounts falling due after more than one year: ​ ​ ​ ​ ​ ​ ​ ​ December 31, ​ December 31, ​ 2020 2019 ​ ​ £ 000 ​ £ 000 Deferred consideration payable — 524 ​ The Group’s exposure to market and liquidity risks, including maturity analysis, related to trade and other payables is disclosed in note 24 Financial risk management and impairment of financial assets. As a result of the Reorganization, the Group has no deferred consideration payable at December 31, 2020; refer to note 2 Significant accounting policies.

Pension and other schemes

Pension and other schemes	12 Months Ended
	Dec. 31, 2020
Pension and other schemes
Pension and other schemes	21 Pension and other schemes Defined contribution pension scheme The Group operates a defined contribution pension scheme. The pension cost charge for the year represents contributions payable by the Group to the scheme and amounted to £271,000 (2019: £102,000). Contributions totalling £70,000 (2019: £nil) were payable to the scheme at the end of the year and are included in creditors.

Share-based payments

Share-based payments	12 Months Ended
	Dec. 31, 2020
Share-based payments
Share-based payments	22 Share-based payments Scheme details and movements On September 11, 2020, the Group implemented an Enterprise Management Incentive scheme. The scheme comprises options over B ordinary shares which are exercisable over a set period, dependent upon when the employee joined the scheme. The movements in the number of share options during the year were as follows: ​ ​ ​ ​ ​ ​ December 31, ​ 2020 ​ Number Outstanding, start of period — Granted during the period 16,817 Outstanding, end of period 16,817 ​ The movements in the weighted average exercise price of share options during the year were as follows: ​ ​ ​ ​ ​ ​ December 31, ​ 2020 ​ ​ £ 000 Outstanding, start of period — Granted during the period 143.28 Outstanding, end of period 143.28 ​ Outstanding share options Details of share options outstanding at the end of the year are as follows: ​ ​ ​ ​ ​ ​ 31 December ​ 2020 Weighted average exercise price (£) 143.28 Number of share options outstanding 16,817 Expected weighted average remaining vesting period (years) 1.13 ​ The number of options which were exercisable at December 31, 2020 was 7,635 (2019: nil) with exercise prices ranging from £38.22 to £204. Fair value of options granted The weighted average fair value per option of options granted during the period at measurement date was £6.70 (2019 – Nil). The option pricing model used was Black Scholes and the main inputs are set out in the table below. The date of grant of the options was between September 11, 2020 and November 20, 2020 (2019 — n/a). ​ ​ ​ ​ ​ ​ December 31, ​ 2020 Share price at date of grant (£) 40.36 Expected volatility (%) 50.00 Vesting period in years 1.13 Option life in years 4.00 Risk-free interest rate (%) (0.13) ​ 22 Share-based payments (continued) Volatility Given the lack of share price history and volatility, the volatility has been estimated with reference to other industry competitors, on a listed stock market, with a premium attached for the uncertainty around an unlisted investment. Share based payments charge During the year, a charge of £96,000 was recognised for equity settled share based payment transactions (2019: £nil). Refer to note 7 Expenses by nature.

Financial instruments

Financial instruments	12 Months Ended
	Dec. 31, 2020
Financial instruments
Financial instruments	23 Financial instruments Financial assets Financial assets at amortized cost ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Carrying value Fair value ​ ​ December 31, December 31, ​ December 31, December 31, ​ 2020 2019 2020 2019 ​ ​ £ 000 ​ £ 000 ​ £ 000 ​ £ 000 Cash and cash equivalents 839 1,029 839 1,029 Trade and other receivables 2,799 1,316 2,799 1,316 ​ 3,638 2,165 3,638 2,165 ​ Financial assets: The fair value of financial assets is based on the expectation of recovery of balances. All balances are expected to be received in full. Financial liabilities Financial liabilities at amortized cost ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Carrying Value Fair Value ​ ​ December 31, December 31, ​ December 31, December 31, ​ 2020 2019 2020 2019 ​ ​ £ 000 ​ £ 000 ​ £ 000 ​ £ 000 Trade and other payables 2,128 1,895 2,128 1,895 Borrowings 6,309 — 6,309 — Lease liabilities 1,021 1,166 1,021 1,166 ​ 9,458 3,061 9,458 3,061 ​ Valuation methods and assumptions Financial liabilities at amortized cost The fair value of trade and other payables is estimated as the present value of future cash flows, discounted at the market rate of interest at the balance sheet date if the effect is material. Due to their short maturities, the fair value of the trade and other payables approximates to their book value. The total interest expense for financial liabilities not held at fair value through profit or loss is £801,000 (2019: £61,000).

Financial risk management and i

Financial risk management and impairment of financial assets	12 Months Ended
	Dec. 31, 2020
Financial risk management and impairment of financial assets
Financial risk management and impairment of financial assets	24 Financial risk management and impairment of financial assets The Group’s activities expose it to a variety of financial risks: market risk, credit risk and liquidity risk. Credit risk and impairment Credit risk is the risk of financial loss to the Group if a customer or counterparty to a financial instrument fails to meet its contractual obligations, and arises principally from prepayments to suppliers and distributors and deposits with the Group’s bank. The carrying amount of financial assets represents the maximum credit exposure. Therefore, the maximum exposure to credit risk at the balance sheet date was £2,799,000 (2019: £1,136,000) being the total of the carrying amount of financial assets excluding cash, which includes trade receivables and other receivables. All the receivables are with parties in the UK. The allowance account of trade receivables is used to record impairment losses unless the Group is satisfied that no recovery of the amount owing is possible; at that point the amounts considered irrecoverable are moved to the allowance account to be written off against the trade receivables directly. The Group provides for impairment losses based on estimated irrecoverable amounts determined by reference to specific circumstances and the experience of management of debtor default in the industry. On that basis, the loss allowance as at December 31, 2020 and December 31, 2019 was determined as £nil for trade receivables. Market risk Market risk is the risk that changes in market prices, such as foreign exchange rates, interest rates and equity prices will affect the Group’s financial position. The Group’s principal exposure to market risk is exposure to foreign exchange rate fluctuations. There are currently no currency forwards, options or swaps to hedge this exposure. Foreign exchange risk The Group is exposed to foreign exchange risk arising from exposure to various currencies in the ordinary course of business. The Group holds its cash in GBP and the majority of the Group’s costs are in GBP. The Group also has supply contracts denominated in USD and EUR. In 2019 and 2020, the Group did not consider foreign exchange rate risk to have a material impact on the financials statements and therefore no sensitivity analysis is presented. Liquidity risk Liquidity risk is the risk that the Company will not be able to meet its financial obligations as they fall due. The Group’s management team uses short and long-term cash flow forecasts to manage liquidity risk. Forecasts are supplemented by sensitivity analysis which is used to assess funding adequacy for at least a 12 month period. ​ 24 Financial risk management and impairment of financial assets (continued) The Company manages its cash resources to ensure it has sufficient funds to meet all expected demands as they fall due. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Maturity analysis Between 2 and 5 After more than ​ 2020 Within 1 year years 5 years Total ​ ​ £ 000 ​ £ 000 ​ £ 000 ​ £ 000 Trade and other payables 2,401 — — 2,401 Lease liabilities 175 700 397 1,272 Other borrowings 6,309 — — 6,309 ​ 8,885 700 397 9,982 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Between 2 and 5 After more than ​ 2019 Within 1 year years 5 years Total ​ ​ £ 000 ​ £ 000 ​ £ 000 ​ £ 000 Trade and other payables 1,371 524 — 1,895 Lease liabilities 219 700 572 1,491 ​ 1,590 1,224 572 3,386 ​ Capital risk management Capital management The Group’s objective when managing capital is to ensure the Group continues as a going concern; and grows in a sustainable manner. The Group considers its capital to be its cash balance. The Group has no borrowings from unrelated third parties; should debt be introduced into the capital structure in the future then the debt to equity ratio would be managed and monitored. There are no externally imposed capital requirements. Given the ongoing development of eVTOL aircraft with minimal revenues, the Group relies on funding from its shareholders and other equity investors. The finance department reviews the cash the Group has available on a monthly basis and forecasts the use of that cash. Equity fundraising processes are ongoing in order to ensure that the Group has sufficient capital in order to achieve its targets.

Related party transactions

Related party transactions	6 Months Ended	12 Months Ended
	Jun. 30, 2021	Dec. 31, 2020
Related party transactions
Related party transactions	9 On March 10, 2021, the Group agreed to reallocate its debt from Imagination Industries Ltd (a company wholly owned by Stephen Fitzpatrick) to Stephen Fitzpatrick. The loan was released by Stephen Fitzpatrick in exchange for newly issued share capital. Movements on loan balances in the period were as follows: ​ ​ ​ ​ ​ ​ ​ 2021 2020 ​ ​ £ 000 ​ £ 000 As at January 1 6,309 — Amounts advanced 2,945 — Interest charge 483 — Amounts repaid (737) — Conversion to equity (9,000) — As at June 30 — — ​	25 Related party transactions Key management personnel In 2020 and 2019 key management personnel are the CEO and the first line of reporting into the CEO, excluding support staff. There were 3 key management personnel in 2020 (2019: 2). Key management compensation ​ ​ ​ ​ ​ ​ ​ December 31, 2020 December 31, 2019 ​ £ 000 £ 000 Salaries and other short term employee benefits 374 181 Payments to defined contribution pension schemes 39 24 Share-based payments 92 — ​ 504 205 ​ 25 Related party transactions (continued) Summary of other transactions with key management During the year ended December 31, 2020, the Group made payments to key management personnel for consideration for the acquisition of Vertical Advanced Engineering Ltd of £300,000 (2019: £1,019,000). Refer to note 14 Business combinations. Summary of transactions with other related parties During the year ended December 31, 2020, the Group received loan funds from Imagination Industries Ltd of £5,600,000 (2019: £nil). The loan incurred an interest charge at 30% (2019: not applicable) of £709,000 (2019: £nil). As at 31 December 2020, the total balance owed to Imagination Industries Ltd was £6,309,000 (2019: £nil). During the year ended December 31, 2020, Imagination Industries Incubator Ltd charged the Group management fees of £144,000 (2019: £144,000). As at 31 December 2020, the total balance outstanding was £72,000 (2019: £nil). During the year ended December 31, 2020, the Group received funds from Imagination Industries Aero Ltd of £440,000 (2019: £nil). No interest was charged (2019: £nil). During the year £457,000 was repaid (2019: £nil). As at 31 December 2020, the total balance receivable from Imagination Industries Aero Ltd was £17,000 (2019: £nil). During the year ended December 31, 2020, the business of Vertical Aerospace was transferred from Imagination Industries Aero Ltd to the Group for £1. Refer to note 2 Significant accounting policies for further discussion.

Ultimate controlling party

Ultimate controlling party	12 Months Ended
	Dec. 31, 2020
Ultimate controlling party
Ultimate controlling party	26 Ultimate controlling party The ultimate controlling party is Stephen Fitzpatrick.

Non adjusting events after the

Non adjusting events after the reporting period	12 Months Ended
	Dec. 31, 2020
Non adjusting events after the reporting period
Non adjusting events after the reporting period	27 Non adjusting events after the reporting period In March 2021, the Company issued convertible notes worth £25m. The notes are fully equity settled. The full value of the notes will be shown as a liability. In March 2021, the Company issued 23,220 A ordinary shares to Stephen Fitzpatrick for a consideration of £9m. The consideration was settled by releasing the Company’s debt owed to Stephen Fitzpatrick. On June 10, 2021, the Group entered into a business combination agreement with Broadstone Acquisition Corp. The business combination agreement was entered into to raise capital from a combination of private investment through a PIPE mechanism and access to share capital via a merger with Broadstone Acquisition Corp, an NYSE-listed entity, and includes a $US240m minimum cash closing condition. On June 10, 2021, the Group issued 5,804 Z ordinary shares for nominal value to American Airlines, Inc. in relation to their involvement in the PIPE.

Significant accounting polici_6

Significant accounting policies (Policies)	6 Months Ended	12 Months Ended
	Jun. 30, 2021	Dec. 31, 2020
Significant accounting policies
Presentation of these financial statements	Presentation of these financial statements The consolidated interim financial statements of the Group have been prepared in accordance with International Financial Reporting Standards (“IFRS”) as issued by the International Accounting Standards Board (“IASB”) and reflect the historical operations of the Vertical Aerospace business further to the corporate reorganization as described below. In July 2020 IIAL, transferred all of its operations and substantially all of its net assets to VAGL (the “Vertical Aerospace Net Assets”), and in February 2021 IIAL transferred its investment in VAEL to VAGL (together, the “Reorganization”). Prior to the transfer VAGL only engaged in activities incidental to its formation. The Reorganization has been considered as a reorganization under common control for the purpose of the preparation of these consolidated financial statements and resulted in the Vertical Aerospace Net Assets being recognised by VAGL at their historical net book values. Following the transfer IIAL changed its name to Imagination Industries Aero Ltd (together with IIL, the “Parent Group”) as its remaining net assets were no longer related to or included in the Vertical Aerospace business. Through the Reorganization as described above, the Company’s principal activities became the development and commercialization of eVTOL aircraft following the contribution of the Vertical Aerospace Net Assets, and the Company became the parent of VAEL. Accordingly, the consolidated financial statements were prepared as if the Reorganization had been completed prior to the earliest period presented (except for the acquisition of VAEL which was acquired by IIAL in July 2019 as discussed in note 14 Business combinations of the consolidated financial statements for the year ended December 31, 2020) using the historical book values of IIAL. Prior to the Reorganization the Vertical Aerospace Net Assets had not presented standalone financial statements, and, as a result, financial information for the period up to July 2020 were derived from IIAL’s historical financial records as if the Vertical Aerospace Net Assets (including VAEL from July 2019) had been a standalone business. Accordingly, the financial information for that period is shown on a carve-out basis to present the results of operations. 2 All transactions and balances between the Vertical Aerospace Net Assets and the Parent Group during the period prior to July 2020 which were not historically settled in cash, were considered to be effectively settled in cash in the consolidated financial statements at the time the transaction was recorded. The total net effect of the settlement of these transactions between the Vertical Aerospace Net Assets and the Parent Group are reflected in the Consolidated statement of cash flows as Movement in net parent investment in financing activity, and in the Consolidated statement of financial position and Statement of changes in equity as Net parent investment. During the period prior to July 2020, the Group’s equity balance represented the excess of total assets over total liabilities and was recorded within the account Net parent investment. Net parent investment represents the cumulative financing by the Parent Group and the Founder in the Vertical Aerospace Net Assets through to the Reorganization. In connection with the Reorganization the Net parent investment balance was reclassified to Other reserves. The legal form of such financing to IIAL during the period prior to July 2020 was an intercompany loan from IIL which was not included in the Vertical Net Assets, as such no interest expense related to the loan is recognized in these consolidated financial statements. Assets and liabilities that were specifically identifiable or attributable to the Vertical Aerospace Net Assets have been included in the carve-out financial information, in addition to the assets and liabilities of VAEL after its acquisition in July 2019. The deferred consideration related to the VAEL acquisition with a fair value of £820,000 at the date of acquisition has been reflected in the carve-out financial information up to July 2020. The outstanding deferred consideration balance at July 2020 with a fair value of £542,000 at that date was not included in the Vertical Aerospace Net Assets, and is treated as an increase to Net Parent Investment immediately prior to the reclassification to Other reserves. The carve-out financial information also includes all income and expenses incurred by IIAL up to July 2020 as management believes this to be a reasonable representation, however it may not reflect the income and expenses that would have been incurred if the Vertical Aerospace Net Assets operated as an independent business for the period prior to the Reorganization.	Presentation of these financial statements The consolidated financial statements of the Group have been prepared in accordance with International Financial Reporting Standards (“IFRS”) as issued by the International Accounting Standards Board (“IASB”) and reflect the historical operations of the Vertical Aerospace business further to the corporate reorganization as described below. In July 2020 IIAL transferred all of its operations and substantially all of its net assets to VAGL (the “Vertical Aerospace Net Assets”), and in February 2021 IIAL transferred its investment in VAEL to VAGL (together, the “Reorganization”). Prior to the transfer VAGL only engaged in activities incidental to its formation. The Reorganization has been considered as a reorganization under common control for the purpose of the preparation of these consolidated financial statements and resulted in the Vertical Aerospace Net Assets being recognised by VAGL at their historical net book values. Following the transfer IIAL changed its name to Imagination Industries Aero Ltd (together with IIL, the “Parent Group”) as its remaining net assets were no longer related to or included in the Vertical Aerospace business. Through the Reorganization as described above, the Company’s principal activities became the development and commercialization of eVTOL aircraft following the contribution of the Vertical Aerospace Net Assets, and the Company became the parent of VAEL. Accordingly, the consolidated financial statements were prepared as if the Reorganization had been completed prior to the earliest period presented (except for the acquisition of VAEL which was acquired by IIAL in July 2019 as discussed in note 14 Business combinations) using the historical book values of IIAL. Prior to the Reorganization the Vertical Aerospace Net Assets had not presented standalone financial statements, and, as a result, financial information for the period up to July 2020 were derived from IIAL’s historical financial records as if the Vertical Aerospace Net Assets (including VAEL from July 2019) had been a standalone business. Accordingly, the financial information for that period is shown on a carve-out basis to present the results of operations. 2 Significant accounting policies (continued) All transactions and balances between the Vertical Aerospace Net Assets and the Parent Group during the period prior to July 2020 which were not historically settled in cash, were considered to be effectively settled in cash in the consolidated financial statements at the time the transaction was recorded. The total net effect of the settlement of these transactions between the Vertical Aerospace Net Assets and the Parent Group are reflected in the Consolidated statement of cash flows as Movement in net parent investment in financing activity, and in the Consolidated statement of financial position and Statement of changes in equity as Net parent investment. During the period prior to July 2020, the Group’s equity balance represented the excess of total assets over total liabilities and was recorded within the account Net parent investment. Net parent investment represents the cumulative financing by the Parent Group and the Founder in the Vertical Aerospace Net Assets through to the Reorganization. In connection with the Reorganization the Net parent investment balance was reclassified to Other reserves. Assets and liabilities that were specifically identifiable or attributable to the Vertical Aerospace Net Assets have been included in the carve-out financial information, in addition to the assets and liabilities of VAEL after its acquisition in July 2019. The deferred consideration related to the VAEL acquisition with a fair value of £820,000 at the date of acquisition has been reflected in the carve-out financial information up to July 2020. The outstanding deferred consideration balance at July 2020 with a fair value of £542,000 at that date was not included in the Vertical Aerospace Net Assets, and is treated as an increase to Net Parent Investment immediately prior to the reclassification to Other reserves. The carve-out financial information also includes all income and expenses incurred by IIAL up to July 2020 as management believes this to be a reasonable representation, however it may not reflect the income and expenses that would be been incurred if the Vertical Aerospace Net Assets operated as an independent business for the period prior to the Reorganization.
Basis of preparation	Basis of preparation These condensed unaudited consolidated interim financial statements for the six months ended June 30, 2021 have been prepared in accordance with IAS 34 Interim Financial Reporting as issued by the IASB, and should be read in conjunction with the Group’s last annual consolidated financial statements for year ended December 31, 2020. They do not include all of the information required for a complete set of financial statements prepared in accordance with IFRS Standards. However selected explanatory notes are included to explain events and transactions that are significant to an understanding of the changes in the Group’s consolidated financial position and consolidated performance since the last annual financial statements. These condensed unaudited consolidated interim financial statements were authorized for issue by the Management Board on September 20, 2021. Items included in the financial statements are measured using the currency of the primary economic environment in which the entity and its subsidiaries operate (‘the functional currency’). The financial statements are presented in pounds sterling (‘£’ or ‘GBP’), which is the Group’s functional and presentation currency.	Basis of preparation All intercompany balances and transactions have been eliminated in consolidation. The financial statements have been prepared under historical cost accounting rules, apart from certain financial liabilities which are recognised at fair value. If the Company had derivative financial instruments, these would have been measured at fair value. The preparation of financial statements in conformity with IFRS requires the use of certain critical accounting estimates. It also requires management to exercise its judgement in the process of applying the company’s accounting policies. Items included in the financial statements are measured using the currency of the primary economic environment in which the entity and its subsidiaries operate (‘the functional currency’). The financial statements are presented in pounds sterling (‘£’ or ‘GBP’), which is the Group’s functional and presentation currency and all amounts are presented in and rounded to the nearest thousand unless otherwise indicated.
Basis of consolidation		​ 2 Significant accounting policies (continued) Basis of consolidation Vertical Aerospace Group Ltd is the parent of the Group. Details of the subsidiaries are as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Proportion of ​ ​ ​ ​ ​ ​ ​ ​ ownership ​ ​ ​ ​ ​ ​ ​ ​ interest and ​ ​ ​ ​ ​ ​ ​ ​ voting rights held ​ ​ Name of subsidiary Principal activity Registered office 2020 2019 Vertical Advanced Engineering Ltd Sale of engineering consultancy services 140-142 Kensington Church Street, London, W8 4BN UK 100 % 100 % ​ Summary of significant accounting policies and key accounting estimates The principal accounting policies applied in the preparation of these financial statements are set out below. These policies have been consistently applied to all the years presented, unless otherwise stated.
Going concern	Going concern Management has prepared a cash flow forecast for the Group and has considered the ability for the Group to continue as a going concern for the foreseeable future, being at least 12 months after approving these financial statements. ​ 2 The Group is currently in the research and development phase of its journey to commercialization of eVTOL technology. It is generating minimal revenue, has a limited amount of cash on hand and has incurred net losses and net cash outflows from operations since inception. To date, the cash funding for the Group has come from private investors. Since December 31, 2020, the Group has raised £25 million through the issue of convertible notes (see Note 10 Convertible notes) and has also converted a £9 million loan to equity. As of June 30, 2021, the Group had approximately £17,144 thousand of cash and cash equivalents on hand. Prior to the issuance of the consolidated financial statements for the year ended December 31, 2020 in July 2021, management prepared a cash flow model detailing the cash inflows and outflows of the Group and determined that the Group had sufficient cash to fund its activity for a period of 18 months from the date of approval of the financial statements. Subsequent to the July 2021 release of the consolidated financial statements for the year ended December 31, 2020, management increased its investment into research and development activities. The increased activities, including hiring additional engineers and other staff, resulted in increased cash outflows, reducing cash and cash equivalents significantly. The Group is therefore dependent on additional financing for research and development activities and operational activities. Management plans to finance these activities with the proceeds from the contemplated US public listing via a merger with a Special Purpose Acquisition Company (‘SPAC’), which is expected to be completed in the fourth quarter of 2021. The timely realization of the transaction is imperative for the Group’s ability to continue as a going concern. Based on the Group’s cash flow forecast and the need to raise additional capital to finance future operations, management has concluded that there is substantial doubt about the Group’s ability to continue as a going concern. The financial statements have been prepared on a going concern basis and do not include any adjustments to the amounts and classification of assets and liabilities that may be necessary in the event the Group can no longer continue as a going concern.	Going concern Management has prepared a cash flow forecast for the Group and has considered the ability for the Group to continue as a going concern for the foreseeable future, being at least 12 months after approving these financial statements. The Group is currently in the research and development phase of its journey to commercialization of eVTOL technology. It is generating minimal revenue, has a limited amount of cash on hand and has incurred net losses and net cash outflows from operations since inception. To date, the cash funding for the Group has come from private investors. Since December 31, 2020, the Group has raised £25m through the issue of convertible notes (see Note 27 Non adjusting events after the reporting period) and has also converted a £9m loan to equity. As of December 31, 2020, the Group had approximately £839 thousand of cash and cash equivalents on hand. Prior to the issuance of the financial statements in July 2021, management prepared a cash flow model detailing the cash inflows and outflows of the Group and determined that the Group had sufficient cash to fund its activity for a period of 18 months from the date of approval of the financial statements. Subsequent to the July 2021 release of the financial statements, management increased its investment into research and development activities. The increased activities, including hiring additional engineers and other staff, resulted in increased cash outflows, reducing cash and cash equivalents significantly. The Group is therefore dependent on additional financing for research and development activities and operational activities. Management plans to finance these activities with the proceeds from the contemplated US public listing via a merger with a Special Purpose Acquisition Company (‘SPAC’), which is expected to be completed in the fourth quarter of 2021. The timely realization of the transaction is imperative for the Group’s ability to continue as a going concern. Based on the Group’s cash flow forecast and the need to raise additional capital to finance future operations, management has concluded that there is substantial doubt about the Group’s ability to continue as a going concern. The financial statements have been prepared on a going concern basis and do not include any adjustments to the amounts and classification of assets and liabilities that may be necessary in the event the Group can no longer continue as a going concern.
Changes in accounting policy		2 Significant accounting policies (continued) Changes in accounting policy The Group early adopted the following standards and amendments for the first time from the annual reporting period commencing January 1, 2019: ● Definition of Material — amendments to IAS 1 and IAS 8 ● Definition of a Business — amendments to IFRS 3 ● Interest Rate Benchmark Reform — amendments to IFRS 9, IAS 39 and IFRS 7 ● Revised Conceptual Framework for Financial Reporting The amendments listed above did not have any impact on the amounts recognised in prior periods and are not expected to significantly affect the current or future periods. No new accounting standards and interpretations that have been published and are not mandatory for December 31, 2020 reporting periods have been early adopted by the Group or are expected to have a material impact on the Group in current or future reporting periods.
Revenue recognition		Revenue recognition Revenues are minimal to the Group and are generated from the performance of engineering consultancy services to customers. IFRS 15 deals with revenue recognition and establishes principles for reporting useful information to users of financial statements about the nature, amount, timing and uncertainty of revenue and cash flows arising from an entity’s contracts with customers. IFRS principles are applied using the following 5 step model: 1. Identify the contracts with the customer 2. Identify the performance obligations in the contract 3. Determine the transaction price 4. Allocate the transaction price to the performance obligations in the contract 5. Recognise revenue when or as the entity satisfies its performance obligations The revenue for the Group relates solely to engineering consultancy services and revenue is recognised once the Group has satisfied the performance conditions. The contracts that the Group enters into comprise payments when certain milestones are met. Revenue is recognised at each milestone event and only if the milestone is met.
Government grants		Government grants Government grants are recognised as Other operating income and are recognised in the period when the expense to which the grant relates is incurred. Grants are only recognised when there is a signed grant offer letter or equivalent from the government body and there is reasonable assurance that the Group will be able to satisfy all conditions of the grant. 2 Significant accounting policies (continued) Receivables relating to government grants are presented in Trade and other receivables at their fair value.
Research and development expenses		Research and development expenses Research expenditure is charged to the income statement in the period in which it occurred. Development expenditure is recognised as an intangible asset when it is probable that the project will generate future economic benefit, considering factors such as technological, commercial and regulatory feasibility. Other development expenditure is charged to the income statement in the period in which it occurred. Refer to note 3 Critical accounting judgements and key sources of estimation uncertainty for a discussion on the judgement of this classification. The amounts included in research and development expenses include staff costs for staff working directly on research and development projects and for expenses directly attributable to a research project, excluding software costs.
Finance income and costs policy		Finance income and costs policy Financing expense comprises interest payable on loans from related parties and is recognised in profit or loss using the effective interest method. Interest income and interest payable is recognised in profit or loss as it accrues, using the effective interest method.
Foreign currency transactions and balances		Foreign currency transactions and balances Transactions in foreign currencies are initially recorded at the functional currency rate prevailing at the date of the transaction. Monetary assets and liabilities denominated in foreign currencies are retranslated into the respective functional currency of the entity at the rates prevailing on the reporting period date. Non-monetary items carried at fair value that are denominated in foreign currencies are retranslated at the rates prevailing on the initial transaction dates. Non-monetary items measured in terms of historical cost in a foreign currency are not retranslated.
Tax		Tax The tax expense for the period comprises current tax and deferred tax. Tax is recognised in profit or loss, except that a change attributable to an item of income or expense recognised as other comprehensive income is also recognised directly in other comprehensive income. The current income tax charge is calculated on the basis of tax rates and laws that have been enacted or substantively enacted by the reporting date in the countries where the company operates and generates taxable income. Current tax assets and tax liabilities are offset where the entity has a legally enforceable right to offset and intends either to settle on a net basis, or to realize the asset and settle the liability simultaneously. Deferred tax is provided on temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts used for taxation purposes. The following temporary differences are not provided for: the initial recognition of goodwill; the initial recognition of assets or liabilities that affect neither accounting nor taxable profit other than in a business combination, and differences relating to investments in subsidiaries to the extent that they will probably not reverse in the foreseeable future. The amount of deferred tax provided is based on the expected manner of realization or settlement of the carrying amount of assets and liabilities, using tax rates enacted or substantively enacted at the balance sheet date. 2 Significant accounting policies (continued) Deferred tax assets are recognized only if it is probable that future taxable amounts will be available to utilize those temporary differences and losses. Deferred tax assets and liabilities are offset where there is a legally enforceable right to offset current tax assets and liabilities and where the deferred tax balances relate to the same taxation authority. The Group is the recipient of R&D tax credits in the UK. These tax credits are presented within the other operating income.
Property, plant and equipment		Property, plant and equipment Property, plant and equipment is stated in the statement of financial position at cost, less any subsequent accumulated depreciation and subsequent accumulated impairment losses. The cost of property, plant and equipment includes directly attributable incremental costs incurred in their acquisition and installation. Depreciation Depreciation is charged so as to write off the cost of assets over their estimated useful lives, as follows: ​ ​ ​ ​ Asset class Depreciation method and rate Leasehold property ​ Straight line over term of lease Computer equipment ​ 3 years straight line Leasehold improvements ​ 5
Intangible assets		Intangible assets Intangible assets are carried at cost, less accumulated amortization and impairment losses. Computer software licences acquired for use within the Company are capitalised as an intangible asset on the basis of the costs incurred to acquire and bring to use the specific software. Amortization Amortization is provided on intangible assets so as to write off the cost on a straight line basis, less any estimated residual value, over their expected useful economic life as follows: ​ ​ ​ ​ Asset class Amortization method and rate IT software ​ 3 years straight line
Business combinations and goodwill		Business combinations and goodwill The purchase method is used to account for the acquisition of subsidiaries by the Group. The cost of an acquisition is measured as the fair value of the assets given, equity instruments issued and liabilities incurred or assumed at the date of exchange. Identifiable assets acquired and liabilities and contingent liabilities assumed are measured initially at their fair values on the date of acquisition. The excess of the cost of acquisition over the fair value of the Group’s share of identifiable net assets, including intangible assets acquired, is recorded as goodwill. If the cost of acquisition is less than the fair value of the Group’s share of net assets of the subsidiary acquired, the difference is recognised directly in the income statement. 2 Significant accounting policies (continued) Goodwill is stated at cost, less any accumulated impairment losses. Goodwill is tested annually for impairment or when there are indicators of impairment.
Cash and cash equivalents		Cash and cash equivalents Cash and cash equivalents include cash at bank and in hand.
Trade and other receivables		Trade and other receivables Trade receivables are amounts due from customers for services performed in the ordinary course of business. If collection is expected in one year or less (or in the normal operating cycle of the business if longer), they are classified as current assets. If not, they are presented as non-current assets. Trade receivables are recognised initially at the transaction price. They are subsequently measured at amortised cost using the effective interest method, less provision for impairment. A provision for the impairment of trade receivables is established using an expected credit loss model as per the Group’s accounting policy for the impairment of financial assets. Other receivables represent amounts due from parties who are not customers and are measured at amortized cost.
Trade and other payables		Trade and other payables Trade and other payables are obligations to pay for goods or services that have been acquired in the ordinary course of business from suppliers. Accounts payable are classified as current liabilities if payment is due within one year or less (or in the normal operating cycle of the business if longer). If not, they are presented as non-current liabilities. Trade and other payables are recognised initially at the transaction price and subsequently measured at amortized cost using the effective interest method.
Borrowings		Borrowings All borrowings are initially recorded at the amount of proceeds received, net of transaction costs. Borrowings are subsequently carried at amortized cost, with the difference between the proceeds, net of transaction costs, and the amount due on redemption being recognised as a charge to the income statement over the period of the relevant borrowing. Borrowings are classified as current liabilities unless the company has an unconditional right to defer settlement of the liability for at least 12 months after the reporting date.
Provisions		Provisions Provisions are recognised when the company has a present obligation (legal or constructive) as a result of a past event, it is probable that the group will be required to settle that obligation and a reliable estimate can be made of the amount of the obligation. Provisions are measured at management’s best estimate of the expenditure required to settle the obligation at the reporting date and are discounted to present value where the effect is material.
Leases		2 Significant accounting policies (continued) Leases Definition A lease is a contract, or part of a contract, that conveys the right to use an asset or a physically distinct part of an asset (‘the underlying asset’) for a period of time in exchange for consideration. Further, the contract must convey the right to the company to control the asset or a physically distinct portion thereof. A contract is deemed to convey the right to control the underlying asset, if throughout the period of use, the company has the right to: Obtain substantially all the economic benefits from the use of the underlying asset, and; Direct the use of the underlying asset (eg direct how and for what purpose the asset is used). Initial recognition and measurement The company initially recognizes a lease liability for the obligation to make lease payments and a right-of-use asset for the right to use the underlying asset for the lease term. The lease liability is measured at the present value of the lease payments to be made over the lease term. The lease payments include fixed payments, purchase options at exercise price (where payment is reasonably certain), expected amount of residual value guarantees, termination option penalties (where payment is considered reasonably certain) and variable lease payments that depend on an index or rate. The right-of-use asset is initially measured at the amount of the lease liability, adjusted for lease prepayments, lease incentives received, the company’s initial direct costs (e.g., commissions) and an estimate of restoration, removal and dismantling costs. Subsequent measurement After the commencement date, the company measures the lease liability by: (a) Increasing the carrying amount to reflect interest on the lease liability; (b) Reducing the carrying amount to reflect the lease payments made; and (c) Re-measuring the carrying amount to reflect any reassessment or lease modifications or to reflect revised in substance fixed lease payments or on the occurrence of other specific events. Interest on the lease liability in each period during the lease term is the amount that produces a constant periodic rate of interest on the remaining balance of the lease liability. Interest charges are included in finance costs in the income statement, unless the costs are included in the carrying amount of another asset applying other applicable standards. Variable lease payments not included in the measurement of the lease liability, are included in operating expenses in the period in which the event or condition that triggers them arises. The related right-of-use asset is accounted for using the Cost model in IAS 16 and depreciated and charged in accordance with the depreciation requirements of IAS 16 Property, Plant and Equipment as disclosed in the accounting policy for Property, Plant and Equipment. Adjustments are made to the carrying value of the right of use asset where the lease liability is re-measured in accordance with the above. Right of use assets are tested for impairment in accordance with IAS 36 Impairment of assets as disclosed in the accounting policy in impairment. 2 Significant accounting policies (continued) Short term and low value leases The company has made an accounting policy election, by class of underlying asset, not to recognize lease assets and lease liabilities for leases with a lease term of 12 months or less (i.e., short-term leases). The company has made an accounting policy election on a lease-by-lease basis, not to recognize lease assets on leases for which the underlying asset is of low value. Lease payments on short term and low value leases are accounted for on a straight line bases over the term of the lease or other systematic basis if considered more appropriate. Short term and low value lease payments are included in operating expenses in the income statements.
Impairment (non-financial assets)		Impairment (non-financial assets) All assets are reviewed for impairment when there is an indicator of impairment. In addition, goodwill is reviewed for impairment at least annually. An impairment loss is recognised whenever the carrying amount of an asset or its cash-generating unit exceeds its recoverable amount.
Share capital		Share capital Ordinary shares are classified as equity. Equity instruments are measured at the fair value of the cash or other resources received or receivable, net of the direct costs of issuing the equity instruments. If payment is deferred and the time value of money is material, the initial measurement is on a present value basis.
Defined contribution pension obligation		Defined contribution pension obligation A defined contribution plan is a pension plan under which fixed contributions are paid into a separate entity and has no legal or constructive obligations to pay further contributions if the fund does not hold sufficient assets to pay all employees the benefits relating to employee service in the current and prior periods. For defined contribution plans contributions are paid into publicly or privately administered pension insurance plans on a mandatory or contractual basis. The contributions are recognized as employee benefit expense when they are due.
Share based payments		Share based payments Vertical Aerospace Group Ltd operates an equity-settled, share based compensation plan, under which the entity receives services from employees as consideration for equity instruments (share options or shares) of Vertical Aerospace Group Ltd. The fair value of the employee services received in exchange for the grant of the shares is recognised as an expense. The total amount to be expensed is determined by reference to the fair value of the shares granted: ● including any market performance conditions (for example, an entity’s share price); ● excluding the impact of any service and non-market performance vesting conditions (for example, remaining an employee of the entity over a specified time period); and ● including the impact of any non-vesting conditions. 2 Significant accounting policies (continued) Non-market performance and service conditions are included in assumptions about the number of shares that are expected to vest. The total expense is recognized over the vesting period, which is the period over which all of the specified vesting conditions are to be satisfied. In addition, in some circumstances employees may provide services in advance of the grant date and therefore, the grant date fair value is estimated for the purposes of recognizing the expense during the period between service commencement period and grant date. The fair value of ordinary shares in the Group are interpolated from externally set valuations based on investment offers received from third parties (whether accepted or not). In the absence of third party investment offers, internal valuations are used and are benchmarked against third party investment offers when they become available. Further assumptions are applied to the imputed valuations to reflect factors such as lack of marketability and control, including lack of voting rights, where appropriate. At the end of each reporting period, the Group revises its estimates of the number of shares that are expected to vest based on the non-market vesting conditions. They recognize the impact of the revision to original estimates, if any, in the income statement, with a corresponding adjustment to equity.
Financial instruments		Financial instruments Initial recognition Financial assets and financial liabilities comprise all assets and liabilities reflected in the statement of financial position, although excluding property, plant and equipment, intangible assets, deferred tax assets, prepayments, deferred tax liabilities and employee benefits plan. The company recognizes financial assets and financial liabilities in the statement of financial position when, and only when, the company becomes party to the contractual provisions of the financial instrument. Financial assets are initially recognized at fair value. Financial liabilities are initially recognized at fair value, representing the proceeds received net of premiums, discounts and transaction costs that are directly attributable to the financial liability. All regular way purchases and sales of financial assets and financial liabilities classified as fair value through profit or loss (“FVTPL”) are recognized on the trade date, i.e. the date on which the company commits to purchase or sell the financial assets or financial liabilities. All regular way purchases and sales of other financial assets and financial liabilities are recognized on the settlement date, i.e. the date on which the asset or liability is received from or delivered to the counterparty. Regular way purchases or sales are purchases or sales of financial assets that require delivery within the time frame generally established by regulation or convention in the market place. Subsequent to initial measurement, financial assets and financial liabilities are measured at either amortized cost or fair value. ​ 2 Significant accounting policies (continued) Classification and measurement Financial instruments are classified at inception into one of the following categories, which then determine the subsequent measurement methodology: - I. Financial Assets Financial assets are classified into one of the following three categories: ● financial assets at amortized cost; ● financial assets at fair value through other comprehensive income (FVTOCI); or ● financial assets at fair value through the profit or loss (FVTPL). Criteria for measurement of Financial asset at amortized cost A financial asset is measured at amortized cost if it meets both of the following conditions and is not designated as at FVTPL: ● the assets are held within a business model whose objective is to hold assets in order to collect contractual cash flows; and ● the contractual terms of the financial assets give rise on specified dates to cash flows that are solely payments of principal and interest on the principal amount outstanding. If either of the above two criteria is not met, the financial assets are classified and measured at fair value through the profit or loss (FVTPL). Additionally, if a financial asset meets the amortized cost criteria, the company may choose to designate the financial asset at FVTPL. Such an election is irrevocable and applicable only if the FVTPL classification significantly reduces a measurement or recognition inconsistency. II. Financial liabilities Financial liabilities are classified into one of the following two categories: ● financial liabilities at amortized cost; or ● financial liabilities at fair value through the profit or loss (FVTPL). Financial liabilities at amortized cost All financial liabilities, other than those classified as financial liabilities at FVTPL, are measured at amortized cost using the effective interest rate method. Financial liabilities at fair value through the profit or loss Financial liabilities not measured at amortized cost are classified and measured at FVTPL. The classification of financial instruments is as follows: 2 Significant accounting policies (continued) Amortized cost Derecognition of financial assets and liabilities Financial assets are derecognized when the contractual rights to the cash flow have expired or been transferred together with substantially all risks and rewards. Financial liabilities are derecognized when they are extinguished. Impairment of financial assets Measurement of Expected Credit Losses The company recognises loss allowances for expected credit losses (ECL) on financial instruments that are not measured at FVPTL, namely Trade and other receivables. The company applies the simplified approach, which requires expected lifetime losses to be recognised from initial recognition of the receivables. To measure the expected credit losses, trade receivables have been grouped based on shared credit risk characteristics and the days past due. The expected loss rates are based on the payment profiles of sales over a period of 18 months before 31 December 2020 and the corresponding historical credit losses experienced within this period. The historical loss rates are adjusted to reflect current and forward-looking information on macroeconomic factors affecting the ability of the customers to settle the receivables.

Significant accounting polici_7

Significant accounting policies (Tables)	12 Months Ended
	Dec. 31, 2020
Significant accounting policies
Summary of details of subsidiaries	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Proportion of ​ ​ ​ ​ ​ ​ ​ ​ ownership ​ ​ ​ ​ ​ ​ ​ ​ interest and ​ ​ ​ ​ ​ ​ ​ ​ voting rights held ​ ​ Name of subsidiary Principal activity Registered office 2020 2019 Vertical Advanced Engineering Ltd Sale of engineering consultancy services 140-142 Kensington Church Street, London, W8 4BN UK 100 % 100 %
Summary of estimated useful lives of property, plant and equipment	​ ​ ​ ​ Asset class Depreciation method and rate Leasehold property ​ Straight line over term of lease Computer equipment ​ 3 years straight line Leasehold improvements ​ 5
Summary of estimated useful lives of Intangible assets	​ ​ ​ ​ Asset class Amortization method and rate IT software ​ 3 years straight line

Revenue (Tables)_2

Revenue (Tables)	6 Months Ended	12 Months Ended
	Jun. 30, 2021	Dec. 31, 2020
Revenue
Summary of analysis of the company's revenue for the year from continuing operations	​ ​ ​ ​ ​ ​ ​ 2021 2020 ​ ​ £ 000 ​ £ 000 Rendering of engineering consultancy services 66 49	​ ​ ​ ​ ​ ​ ​ 2020 2019 ​ ​ £ 000 ​ £ 000 Rendering of engineering consultancy services 87 70

Other operating income (Table_2

Other operating income (Tables)	6 Months Ended	12 Months Ended
	Jun. 30, 2021	Dec. 31, 2020
Other operating income
Summary of analysis of the Group's other operating income	​ ​ ​ ​ ​ ​ ​ 6 months ended 6 months ended ​ ​ June 30, ​ June 30, ​ ​ 2021 ​ 2020 ​ ​ £ 000 ​ £ 000 Government grants 8,999 — R&D tax credit 687 — ​ 9,686 —	​ ​ ​ ​ ​ ​ ​ 2020 2019 ​ ​ £ 000 ​ £ 000 Government grants 1,989 — R&D tax credit 328 399 ​ 2,317 399

Expenses by nature (Tables)_2

Expenses by nature (Tables)	6 Months Ended	12 Months Ended
	Jun. 30, 2021	Dec. 31, 2020
Expenses by nature
Summary of expense by nature	​ ​ ​ ​ ​ ​ ​ 6 months ended 6 months ended ​ ​ June 30, ​ June 30, ​ ​ 2021 ​ 2020 ​ ​ £ 000 ​ £ 000 Staff costs excluding share based payments 5,546 3,580 Share based payment expenses 76 — Software costs 497 271 Depreciation expense 162 134 Depreciation on right of use assets – Property 70 70 Amortization expense 168 117 Consultancy costs 1,501 523 Foreign exchange (losses)/gains (16) 26 Expense on short term leases 30 36 Research and development components 2,478 1,909 Related party administrative expenses 127 72 Legal costs 2,060 8 Other administrative expenses 1,574 208 Other research and development costs 625 115 ​ 14,898 7,068	​ ​ ​ ​ ​ ​ ​ 2020 2019 ​ ​ £ 000 ​ £ 000 Staff costs excluding share based payment expenses 8,445 3,642 Share based payment expenses 96 — Software costs 579 191 Depreciation expense 279 89 Depreciation on right of use assets – Property 140 171 Amortisation expense 263 70 Consultancy costs 745 518 Foreign exchange gains/(losses) 26 (6) Expense on short term leases 64 8 Research and development components 2,095 1,933 Related party administrative expenses 144 144 Other administrative expenses 539 929 Other research and development costs 460 163 Total administrative and research and development expenses 13,875 7,851 ​

Finance costs (Tables)

Finance costs (Tables)	12 Months Ended
	Dec. 31, 2020
Finance costs
Summary of finance costs	​ ​ ​ ​ ​ ​ ​ 2020 2019 ​ ​ £ 000 ​ £ 000 Finance costs Interest on loans from related parties (709) — Discount unwind on deferred consideration (19) (14) Interest expense on leases-Property (74) (46) Other finance costs (5) (6) Total finance costs (807) (66) ​

Loss per share (Tables)

Loss per share (Tables)	12 Months Ended
	Dec. 31, 2020
Earnings per share [abstract]
Summary of calculation of loss per share	​ ​ ​ ​ ​ ​ ​ 2020 2019 ​ ​ £ 000 ​ £ 000 Net (12,326) (7,484) ​ Number of share in issue: ​ ​ ​ ​ ​ ​ ​ ​ 2020 ​ 2019 ​ No. of shares No. of shares Weighted average 100,000 100,000 ​ The loss per share calculation does not include B ordinary shares as these are non dividend bearing and therefore do not participate in the profit or loss for the period. Due to the Reorganization as described in note 2 Significant accounting policies, the number of shares at the 2019 reporting period has been restated to reflect the current share structure of in order to present loss per share on a comparable basis. Vertical Aerospace Group Ltd was incorporated in May 2020, therefore, were it not for the restatement due to the Reorganization, the number of shares would be nil. ​ ​ ​ ​ ​ ​ ​ 2020 2019 ​ ​ £ ​ £ Basic and diluted loss per share (123.26) (74.84)

Taxation (Tables)

Taxation (Tables)	12 Months Ended
	Dec. 31, 2020
Taxation
Summary of tax charged/(credited) in the income statement	​ ​ ​ ​ ​ ​ ​ 2020 2019 ​ ​ £ 000 ​ £ 000 Current taxation UK corporation tax (4) 30
Summary of differences between corporation tax benefit at standard rate and total tax (expense)/benefit	​ ​ ​ ​ ​ ​ ​ 2020 2019 ​ ​ £ 000 ​ £ 000 Loss before tax (12,322) (7,514) Corporation tax benefit at standard rate 2,341 1,428 Decrease in tax benefit from effect of expenses not deductible in determining taxable profit (tax loss) (135) — Decrease in tax benefit from tax losses for which no deferred tax asset was recognised (841) — Decrease in tax benefit arising from group relief tax reconciliation (pre Reorganization) (1,369) (1,428) Deferred tax credit from unrecognised temporary difference from a prior period — 30 Total tax (expense)/benefit (4) 30

Property, plant and equipment (

Property, plant and equipment (Tables)	12 Months Ended
	Dec. 31, 2020
Property, plant and equipment
Summary of property, plant and equipment	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Leasehold ​ ​ ​ Note improvements Office equipment Total ​ ​ ​ ​ £ 000 ​ £ 000 ​ £ 000 Cost or valuation At January 1, 2019 ​ 25 53 78 Additions ​ 1,311 216 1,527 Acquired through business combinations 14 14 35 49 December 31, 2019 ​ 1,350 304 1,654 Additions ​ 18 137 155 December 31, 2020 ​ 1,368 441 1,809 Depreciation ​ At January 1, 2019 ​ 1 18 19 Charge for year ​ 31 58 89 At December 31, 2019 ​ 32 76 108 Charge for the year ​ 174 105 279 At December 31, 2020 ​ 206 181 387 Net book value ​ At December 31, 2020 ​ 1,162 260 1,422 At December 31, 2019 ​ 1,318 227 1,545 At January 1, 2019 ​ 24 35 59

Right of use assets (Tables)

Right of use assets (Tables)	12 Months Ended
	Dec. 31, 2020
Right of use assets
Summary of right of use assets	​ ​ ​ ​ ​ Property ​ ​ £ 000 Cost or valuation At January 1, 2019 867 Additions 578 At December 31, 2019 1,445 At December 31, 2020 1,445 Depreciation At January 1, 2019 72 Charge for year 171 At December 31, 2019 243 Charge for the year 140 At December 31, 2020 383 Net book value At December 31, 2020 1,062 At December 31, 2019 1,202 As at January 1, 2019 795 ​

Intangible assets (Tables)

Intangible assets (Tables)	12 Months Ended
	Dec. 31, 2020
Intangible assets
Summary of intangible assets	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Note Goodwill IT software Total ​ ​ ​ ​ £ 000 ​ £ 000 ​ £ 000 Cost or valuation At January 1, 2019 ​ ​ — 56 56 Additions ​ ​ — 575 575 Acquired through business combinations 14 1,473 51 1,524 At December 31, 2019 ​ ​ 1,473 682 2,155 Additions ​ ​ — 233 233 At December 31, 2020 ​ ​ 1,473 915 2,388 Amortisation ​ ​ At January 1, 2019 ​ ​ — 25 25 Amortisation charge ​ ​ — 70 70 At December 31, 2019 ​ ​ — 95 95 Amortisation charge ​ ​ — 263 263 At December 31, 2020 ​ ​ — 358 358 Net book value ​ ​ At December 31, 2020 ​ ​ 1,473 557 2,030 At December 31, 2019 ​ ​ 1,473 587 2,060 At January 1, 2019 ​ ​ — 31 31

Business combinations (Tables)

Business combinations (Tables)	12 Months Ended
	Dec. 31, 2020
Business combinations
Summary of amounts recognized in respect of the identifiable assets acquired and liabilities assumed	​ ​ ​ ​ ​ December 31, ​ 2019 ​ ​ £ 000 Assets and liabilities acquired Financial assets 352 Property, plant and equipment 49 Identifiable intangible assets 51 Financial liabilities (96) Total identifiable net assets 356 Goodwill 1,473 Total consideration 1,829 Satisfied by: Cash 1,009 Fair value of deferred consideration 820 Total consideration transferred 1,829 Cash flow analysis: Cash consideration 1,009 Less: cash and cash equivalent balances acquired (278) Net cash outflow arising on acquisition 731

Trade and other receivables (Ta

Trade and other receivables (Tables)	12 Months Ended
	Dec. 31, 2020
Trade and other receivables
Summary of trade and other receivables	​ ​ ​ ​ ​ ​ ​ ​ December 31, ​ December 31, ​ 2020 2019 ​ ​ £ 000 ​ £ 000 Trade receivables — 41 Government grants receivable 1,989 — Prepayments 733 334 Other receivables 810 1,095 ​ 3,532 1,470

Share capital and other reser_2

Share capital and other reserves (Tables)	6 Months Ended	12 Months Ended
	Jun. 30, 2021	Dec. 31, 2020
Share capital.
Summary of allotted, called up and fully paid shares	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ June 30, ​ December 31, ​ ​ 2021 ​ 2020 ​ ​ No. ​ £ ​ No. ​ £ A ordinary of £0.00001 each 123,220 1.23 100,000 1.00 B ordinary of £0.00001 each 4,832 0.05 4,832 0.05 Z ordinary of £0.00001 each 5,804 0.06 — — ​ 133,856 1.34 104,832 1.05	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, December 31, ​ 2020 2019 ​ No. £ No. £ A ordinary of £0.00001 each 100,000 1.00 100,000 1.00 B ordinary of £0.00001 each 4,832 0.05 4,832 0.05 ​ 104,832 1.05 104,832 1.05

Loans from related parties (T_2

Loans from related parties (Tables)	6 Months Ended	12 Months Ended
	Jun. 30, 2021	Dec. 31, 2020
Loans from related parties
Summary of loans from related parties	​ ​ ​ ​ ​ ​ ​ 2021 2020 ​ ​ £ 000 ​ £ 000 As at January 1 6,309 — Amounts advanced 2,945 — Interest charge 483 — Amounts repaid (737) — Conversion to equity (9,000) — As at June 30 — —	​ ​ ​ ​ ​ ​ ​ ​ December 31, ​ December 31, ​ 2020 2019 ​ ​ £ 000 ​ £ 000 Current loans and borrowings Loans from related parties 6,309 — ​ ​ ​ ​ ​ ​ ​ 2020 2019 ​ ​ £ 000 ​ £ 000 As at January 1 — — Amounts advanced 5,600 — Interest charged 709 — As at December 31 6,309 —

Leases (Tables)

Leases (Tables)	12 Months Ended
	Dec. 31, 2020
Leases
Summary of balance sheet shows the following amounts relating to lease liabilities	The balance sheet shows the following amounts relating to lease liabilities: ​ ​ ​ ​ ​ ​ ​ ​ December 31, ​ December 31, ​ 2020 2019 ​ ​ £ 000 ​ £ 000 Long term lease liabilities 846 947 Current lease liabilities 175 219 ​ 1,021 1,166
Summary of lease liabilities maturity analysis	A maturity analysis of lease liabilities based on undiscounted gross cash flow is reported in the table below: ​ ​ ​ ​ ​ ​ ​ ​ December 31, ​ December 31, ​ 2020 2019 ​ ​ £ 000 ​ £ 000 Less than one year 175 219 Within 2 – 5 years 700 700 More than 5 years 397 572 Total lease liabilities (undiscounted) 1,272 1,491
Summary of cash outflows related to leases	Total cash outflows related to leases are presented in the table below: ​ ​ ​ ​ ​ ​ ​ ​ December 31, ​ December 31, Payment 2020 2019 ​ ​ £ 000 ​ £ 000 Right of use assets 220 130 Low value leases — 2 Short term leases 64 8 Total cash outflow 284 140
Summary of reconciliation of the finance lease creditors	A reconciliation of the finance lease creditors is shown below: ​ ​ ​ ​ ​ £000 As at January 1, 2019 673 Additions due to changes in estimates 577 Interest element of payments to finance lease creditors (46) Principal element of payments to finance lease creditors (84) Interest expense on leases 46 As at December 31, 2019 1,166 Interest element of payments to finance lease creditors (74) Principal element of payments to finance lease creditors (145) Interest expense on leases 74 As at December 31, 2020 1,021

Provisions (Tables)

Provisions (Tables)	12 Months Ended
	Dec. 31, 2020
Provisions
Summary of dilapidation provision	​ ​ ​ ​ ​ ​ Dilapidation ​ Provision ​ ​ £ 000 As at January 1, 2019 77 Unwinding of discount 6 As at December 31, 2019 83 Unwinding of discount 5 As at December 31, 2020 88

Trade and other payables (Table

Trade and other payables (Tables)	12 Months Ended
	Dec. 31, 2020
Trade and other payables
Summary of trade and other payables	Amounts falling due within one year: ​ ​ ​ ​ ​ ​ ​ ​ December 31, ​ December 31, ​ 2020 2019 ​ ​ £ 000 ​ £ 000 Trade payables 846 703 Accrued expenses 1,226 356 Amounts due to related parties 56 4 Social security and other taxes 203 — Outstanding defined contribution pension costs 70 — Other payables — 8 Deferred consideration payable — 300 ​ 2,401 1,371 ​ Amounts falling due after more than one year: ​ ​ ​ ​ ​ ​ ​ ​ December 31, ​ December 31, ​ 2020 2019 ​ ​ £ 000 ​ £ 000 Deferred consideration payable — 524

Share-based payments (Tables)

Share-based payments (Tables)	6 Months Ended	12 Months Ended
	Jun. 30, 2021	Dec. 31, 2020
Share-based payments
Schedule of movements in the number of share options		​ ​ ​ ​ ​ ​ December 31, ​ 2020 ​ Number Outstanding, start of period — Granted during the period 16,817 Outstanding, end of period 16,817
Schedule of movements in the weighted average exercise price of share options		​ ​ ​ ​ ​ ​ December 31, ​ 2020 ​ ​ £ 000 Outstanding, start of period — Granted during the period 143.28 Outstanding, end of period 143.28
Schedule of share options outstanding		​ ​ ​ ​ ​ ​ 31 December ​ 2020 Weighted average exercise price (£) 143.28 Number of share options outstanding 16,817 Expected weighted average remaining vesting period (years) 1.13
Schedule of fair value of options granted	​ ​ ​ ​ ​ June 10, ​ ​ 2021 Share price at date of grant ($) 9.93 Option strike price ($) 18.00 Expected volatility (%) 75.00 Maximum term to exercise (years) 3 and 4 Risk-free interest rate (%) 0.75	​ ​ ​ ​ ​ ​ December 31, ​ 2020 Share price at date of grant (£) 40.36 Expected volatility (%) 50.00 Vesting period in years 1.13 Option life in years 4.00 Risk-free interest rate (%) (0.13)

Financial instruments (Tables)

Financial instruments (Tables)	12 Months Ended
	Dec. 31, 2020
Financial instruments
Schedule of financial assets at amortized cost	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Carrying value Fair value ​ ​ December 31, December 31, ​ December 31, December 31, ​ 2020 2019 2020 2019 ​ ​ £ 000 ​ £ 000 ​ £ 000 ​ £ 000 Cash and cash equivalents 839 1,029 839 1,029 Trade and other receivables 2,799 1,316 2,799 1,316 ​ 3,638 2,165 3,638 2,165
Schedule of financial liabilities at amortized cost	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Carrying Value Fair Value ​ ​ December 31, December 31, ​ December 31, December 31, ​ 2020 2019 2020 2019 ​ ​ £ 000 ​ £ 000 ​ £ 000 ​ £ 000 Trade and other payables 2,128 1,895 2,128 1,895 Borrowings 6,309 — 6,309 — Lease liabilities 1,021 1,166 1,021 1,166 ​ 9,458 3,061 9,458 3,061

Financial risk management and_2

Financial risk management and impairment of financial assets (Tables)	12 Months Ended
	Dec. 31, 2020
Financial risk management and impairment of financial assets
Schedule of liquidity risk	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Maturity analysis Between 2 and 5 After more than ​ 2020 Within 1 year years 5 years Total ​ ​ £ 000 ​ £ 000 ​ £ 000 ​ £ 000 Trade and other payables 2,401 — — 2,401 Lease liabilities 175 700 397 1,272 Other borrowings 6,309 — — 6,309 ​ 8,885 700 397 9,982 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Between 2 and 5 After more than ​ 2019 Within 1 year years 5 years Total ​ ​ £ 000 ​ £ 000 ​ £ 000 ​ £ 000 Trade and other payables 1,371 524 — 1,895 Lease liabilities 219 700 572 1,491 ​ 1,590 1,224 572 3,386

Related party transactions (Tab

Related party transactions (Tables)	6 Months Ended	12 Months Ended
	Jun. 30, 2021	Dec. 31, 2020
Disclosure of transactions between related parties [line items]
Schedule of key management compensation	​ ​ ​ ​ ​ ​ ​ 2021 2020 ​ ​ £ 000 ​ £ 000 As at January 1 6,309 — Amounts advanced 2,945 — Interest charge 483 — Amounts repaid (737) — Conversion to equity (9,000) — As at June 30 — —	​ ​ ​ ​ ​ ​ ​ ​ December 31, ​ December 31, ​ 2020 2019 ​ ​ £ 000 ​ £ 000 Current loans and borrowings Loans from related parties 6,309 — ​ ​ ​ ​ ​ ​ ​ 2020 2019 ​ ​ £ 000 ​ £ 000 As at January 1 — — Amounts advanced 5,600 — Interest charged 709 — As at December 31 6,309 —
Key management personnel
Disclosure of transactions between related parties [line items]
Schedule of key management compensation		​ ​ ​ ​ ​ ​ ​ December 31, 2020 December 31, 2019 ​ £ 000 £ 000 Salaries and other short term employee benefits 374 181 Payments to defined contribution pension schemes 39 24 Share-based payments 92 — ​ 504 205

Significant accounting polici_8

Significant accounting policies (Details) - Vertical Advanced Engineering Ltd - GBP (£)	Dec. 31, 2020	Jul. 31, 2020	Dec. 31, 2019	Jul. 31, 2019
Disclosure of detailed information about business combination [line items]
Deferred consideration related to acquisition			£ 820,000	£ 820,000
Outstanding deferred consideration	£ 0	£ 542,000

Significant accounting polici_9

Significant accounting policies - Basis of consolidation (Details) - Vertical Advanced Engineering Ltd	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Disclosure of subsidiaries [line items]
Proportion of ownership interest held	100.00%	100.00%
Proportion of voting rights held	100.00%	100.00%

Significant accounting polic_10

Significant accounting policies - Going concern (Details) - GBP (£) £ in Thousands	1 Months Ended	6 Months Ended
	Jul. 31, 2021	Jun. 30, 2021	Dec. 31, 2020	Jun. 30, 2020	Dec. 31, 2019	Dec. 31, 2018
Disclosure of non-adjusting events after reporting period [line items]
Amount of loan converted to equity		£ 9,000
Cash and cash equivalents on hand		17,144	£ 839	£ 1,516	£ 1,029	£ 272
Issue of convertible notes
Disclosure of non-adjusting events after reporting period [line items]
Amount raised through issuance of debt		£ 25,000
Cash flow projection
Disclosure of non-adjusting events after reporting period [line items]
Projected funding period of cash and cash equivalents held	18 months	18 months
Convertible notes .
Disclosure of non-adjusting events after reporting period [line items]
Amount raised through issuance of debt		£ 25,000
Amount of loan converted to equity		£ 9,000

Significant accounting polic_11

Significant accounting policies - Property, plant and equipment (Details)	12 Months Ended
	Dec. 31, 2020
Computer equipment
Disclosure of detailed information about property, plant and equipment [line items]
Estimated useful lives of property, plant and equipment	3 years
Leasehold improvements | Maximum [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Estimated useful lives of property, plant and equipment	9 years
Leasehold improvements | Minimum [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Estimated useful lives of property, plant and equipment	5 years

Significant accounting polic_12

Significant accounting policies - Intangible assets (Details)	12 Months Ended
	Dec. 31, 2020
IT software
Disclosure of detailed information about intangible assets [line items]
Expected useful economic life	3 years

Operating segments (Details)_2

Operating segments (Details) - segment	6 Months Ended	12 Months Ended
	Jun. 30, 2021	Dec. 31, 2020
Operating segments
Number of reporting segment	1	1

Revenue (Details)_2

Revenue (Details) - GBP (£) £ in Thousands	6 Months Ended		12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020	Dec. 31, 2019
Rendering of engineering consultancy services
Disclosure of disaggregation of revenue from contracts with customers [line items]
Rendering of engineering consultancy services	£ 66	£ 49	£ 87	£ 70

Other operating income (Detai_2

Other operating income (Details) - GBP (£) £ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2021	Dec. 31, 2020	Dec. 31, 2019
Other operating income
Government grants	£ 8,999	£ 1,989
R&D tax credit	687	328	£ 399
Other operating income	£ 9,686	£ 2,317	£ 399

Other operating income - Gove_2

Other operating income - Government grants (Details) - GBP (£)	Jun. 30, 2021	Dec. 31, 2020
Other operating income
Government grants receivable	£ 8,943,000	£ 1,989,000

Expenses by nature (Details)_2

Expenses by nature (Details) - GBP (£) £ in Thousands	6 Months Ended		12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020	Dec. 31, 2019
Expenses by nature
Staff costs excluding share based payment expenses	£ 5,546	£ 3,580	£ 8,445	£ 3,642
Share based payment expenses	76		96
Software costs	497	271	579	191
Depreciation expense	162	134	279	89
Depreciation on right of use assets - Property	70	70	140	171
Amortisation expense	168	117	263	70
Consultancy costs	1,501	523	745	518
Foreign exchange gains/(losses)	(16)	26	26	(6)
Expense on short term leases	30	36	64	8
Research and development components	2,478	1,909	2,095	1,933
Related party administrative expenses	127	72	144	144
Other Administrative Expenses	1,574	208	539	929
Other research and development costs	625	115	460	163
Total administrative and research and development expenses	£ 14,898	£ 7,068	£ 13,875	£ 7,851

Finance costs (Details)

Finance costs (Details) - GBP (£) £ in Thousands	6 Months Ended		12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020	Dec. 31, 2019
Finance costs
Related Party finance costs	£ (483)		£ (709)
Discount unwind on deferred consideration			(19)	£ (14)
Interest expense on leases-Property			(74)	(46)
Other finance costs			(5)	(6)
Total finance costs	£ (520)	£ (59)	£ (807)	£ (66)

Loss per share - Basic and dilu

Loss per share - Basic and diluted loss per share (Details) - GBP (£) £ / shares in Units, £ in Thousands	6 Months Ended		12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020	Dec. 31, 2019
Earnings per share [abstract]
Net loss for the period			£ (12,326)	£ (7,484)
Net loss for the period, diluted			£ 12,326
Weighted average issued shares			100,000	100,000
Weighted average issued shares, diluted			100,000	100,000
Basic loss per share	£ (209.37)	£ (71.75)	£ (123.26)	£ (74.84)
Diluted loss per share	£ (209.37)	£ (71.75)	£ (123.26)	£ (74.84)

Loss per share - Weighted avera

Loss per share - Weighted average shares (Details)	12 Months Ended
	Dec. 31, 2020shares
Earnings per share [abstract]
Weighted average shares, if not for the restatement due to Reorganization	0

Taxation - Current taxation (De

Taxation - Current taxation (Details) - GBP (£) £ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Standard rate of corporation tax	19.00%	19.00%
UNITED KINGDOM
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
UK corporation tax	£ (4)	£ 30

Taxation - Reconciliation (Deta

Taxation - Reconciliation (Details) - GBP (£) £ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Taxation
Loss before tax	£ (12,322)	£ (7,514)
Corporation tax benefit at standard rate	2,341	1,428
Decrease in tax benefit from effect of expenses not deductible in determining taxable profit (tax loss)	(135)
Decrease in tax benefit from tax losses for which no deferred tax asset was recognized	(841)
Decrease in tax benefit arising from group relief tax reconciliation (pre Reorganization)	(1,369)	(1,428)
Deferred tax credit from unrecognised temporary difference from a prior period		30
Total tax (expense)/benefit	£ (4)	£ 30

Taxation - Tax rate (Details)

Taxation - Tax rate (Details)	Apr. 01, 2023	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019
Disclosure of non-adjusting events after reporting period [line items]
Main rate of UK corporation tax					19.00%	19.00%
Change in tax rate announced
Disclosure of non-adjusting events after reporting period [line items]
Main rate of UK corporation tax	25.00%	19.00%	19.00%	19.00%

Taxation (Details)

Taxation (Details) - GBP (£)	Dec. 31, 2020	Dec. 31, 2019
Taxation
Unused tax losses for which no deferred tax asset is recognized	£ 4,476,000	£ 0
Deferred tax assets or liabilities recognized	£ 0

Property, plant and equipment -

Property, plant and equipment - Balance (Details) - GBP (£)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Reconciliation of changes in property, plant and equipment [abstract]
Balance at the beginning	£ 1,545,000	£ 59,000
Balance at the end	1,422,000	1,545,000
Leasehold improvements
Reconciliation of changes in property, plant and equipment [abstract]
Balance at the beginning	1,318,000	24,000
Balance at the end	1,162,000	1,318,000
Office equipment
Reconciliation of changes in property, plant and equipment [abstract]
Balance at the beginning	227,000	35,000
Balance at the end	260,000	227,000
Cost or valuation
Reconciliation of changes in property, plant and equipment [abstract]
Balance at the beginning	1,654,000	78,000
Additions	155,000	1,527,000
Acquired through business combinations		49,000
Balance at the end	1,809,000	1,654,000
Cost or valuation | Leasehold improvements
Reconciliation of changes in property, plant and equipment [abstract]
Balance at the beginning	1,350,000	25,000
Additions	18,000	1,311,000
Acquired through business combinations		14,000
Balance at the end	1,368,000	1,350,000
Cost or valuation | Office equipment
Reconciliation of changes in property, plant and equipment [abstract]
Balance at the beginning	304,000	53,000
Additions	137,000	216,000
Acquired through business combinations		35,000
Balance at the end	441,000	304,000
Depreciation and amortisation
Reconciliation of changes in property, plant and equipment [abstract]
Balance at the beginning	(108,000)	(19,000)
Charge for year	279,000	89,000
Balance at the end	(387,000)	(108,000)
Depreciation and amortisation | Leasehold improvements
Reconciliation of changes in property, plant and equipment [abstract]
Balance at the beginning	(32,000)	(1,000)
Charge for year	174,000	31,000
Balance at the end	(206,000)	(32,000)
Depreciation and amortisation | Office equipment
Reconciliation of changes in property, plant and equipment [abstract]
Balance at the beginning	(76,000)	(18,000)
Charge for year	105,000	58,000
Balance at the end	£ (181,000)	£ (76,000)

Right of use assets (Details)

Right of use assets (Details) - GBP (£) £ in Thousands	6 Months Ended		12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020	Dec. 31, 2019
Disclosure of quantitative information about right-of-use assets [line items]
Balance at the beginning	£ 1,062	£ 1,202	£ 1,202
Charge for year	70	70	140	£ 171
Balance at the end	991		1,062	1,202
Property
Disclosure of quantitative information about right-of-use assets [line items]
Balance at the beginning	1,062	1,202	1,202	795
Balance at the end			1,062	1,202
Property | Cost or valuation
Disclosure of quantitative information about right-of-use assets [line items]
Balance at the beginning	1,445	1,445	1,445	867
Additions				578
Balance at the end			1,445	1,445
Property | Depreciation and amortisation
Disclosure of quantitative information about right-of-use assets [line items]
Balance at the beginning	£ (383)	£ (243)	(243)	(72)
Charge for year			140	171
Balance at the end			£ (383)	£ (243)

Intangible assets (Details)

Intangible assets (Details) - GBP (£) £ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Reconciliation of changes in intangible assets and goodwill [abstract]
Balance at the beginning	£ 2,060	£ 31
Balance at the end	2,030	2,060
Goodwill
Reconciliation of changes in intangible assets and goodwill [abstract]
Balance at the beginning	1,473
Balance at the end	1,473	1,473
IT software
Reconciliation of changes in intangible assets and goodwill [abstract]
Balance at the beginning	587	31
Balance at the end	557	587
Cost or valuation
Reconciliation of changes in intangible assets and goodwill [abstract]
Balance at the beginning	2,155	56
Additions	233	575
Acquired through business combinations		1,524
Balance at the end	2,388	2,155
Cost or valuation | Goodwill
Reconciliation of changes in intangible assets and goodwill [abstract]
Balance at the beginning	1,473
Acquired through business combinations		1,473
Balance at the end	1,473	1,473
Cost or valuation | IT software
Reconciliation of changes in intangible assets and goodwill [abstract]
Balance at the beginning	682	56
Additions	233	575
Acquired through business combinations		51
Balance at the end	915	682
Depreciation and amortisation
Reconciliation of changes in intangible assets and goodwill [abstract]
Balance at the beginning	(95)	(25)
Amortisation charge	(263)	(70)
Balance at the end	(358)	(95)
Depreciation and amortisation | IT software
Reconciliation of changes in intangible assets and goodwill [abstract]
Balance at the beginning	(95)	(25)
Amortisation charge	(263)	(70)
Balance at the end	£ (358)	£ (95)

Intangible assets - Amortisatio

Intangible assets - Amortisation (Details) - GBP (£)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Administrative expenses.
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Amortisation charge	£ 263,000	£ 70,000

Intangible assets - Product lif

Intangible assets - Product lifecycle management (Details) - Product lifecycle management software Licences - GBP (£)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Remaining useful life measured as period of time intangible assets other than goodwill	22 months	34 months
Cost or valuation
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Carrying value	£ 263,000	£ 406,000

Intangible assets - CGU (Detail

Intangible assets - CGU (Details)	12 Months Ended
	Dec. 31, 2020segment
Intangible assets
Number of cash generating unit	1

Business combinations (Details)

Business combinations (Details)	Jul. 29, 2019
Vertical Advanced Engineering Ltd
Disclosure of detailed information about business combination [line items]
Percentage of interest acquired	100.00%

Business combinations - Identif

Business combinations - Identifiable assets acquired and liabilities (Details) - GBP (£)	12 Months Ended
	Dec. 31, 2019	Jul. 31, 2019
Cash flow analysis:
Net cash outflow arising on acquisition	£ 731,000
Vertical Advanced Engineering Ltd
Assets and liabilities acquired
Financial assets	352,000
Property, plant and equipment	49,000
Identifiable intangible assets	51,000
Financial liabilities	(96,000)
Total identifiable net assets	356,000
Goodwill	1,473,000	£ 1,483,000
Total consideration	1,829,000
Satisfied by:
Cash	1,009,000
Fair value of deferred consideration	820,000	£ 820,000
Total consideration	1,829,000
Cash flow analysis:
Cash consideration	1,009,000
Less: cash and cash equivalent balances acquired	(278,000)
Net cash outflow arising on acquisition	£ 731,000

Business combinations - Additio

Business combinations - Additional Details (Details) - Vertical Advanced Engineering Ltd	5 Months Ended	12 Months Ended
	Dec. 31, 2019GBP (£)	Dec. 31, 2019GBP (£)	Dec. 31, 2020GBP (£)	Jul. 31, 2020GBP (£)	Jul. 31, 2019GBP (£)
Disclosure of detailed information about business combination [line items]
Deferred consideration payable	£ 900,000	£ 900,000
Number of equal instalments for payments of deferred consideration		3
Amount of deferred consideration to be paid per instalment		£ 300,000
Deferred consideration payments term		3 years
Outstanding deferred consideration			£ 0	£ 542,000
Acquired trade receivables	57,000	£ 57,000
Goodwill	1,473,000	1,473,000			£ 1,483,000
Goodwill expected to be deductible for UK corporation tax purposes	0	0
Revenue since acquisition	70,000
Profit since acquisition	£ 4,000
Proforma revenue		509,000
Proforma loss		£ 8,045,000

Trade and other receivables (De

Trade and other receivables (Details) - GBP (£)	Jun. 30, 2021	Dec. 31, 2020	Dec. 31, 2019
Trade and other receivables
Trade receivables			£ 41,000
Government grants receivable	£ 8,943,000	£ 1,989,000
Prepayments		733,000	334,000
Other receivables		810,000	1,095,000
Total trade and other current receivables	£ 11,233,000	3,532,000	1,470,000
R&D tax credit receivable		£ 328,000	£ 549,000

Share capital and other reser_3

Share capital and other reserves - Allotted, called up and fully paid shares (Details) - GBP (£)	Jun. 30, 2021	Dec. 31, 2020	Jun. 30, 2020	Dec. 31, 2019
Disclosure of classes of share capital [line items]
Number of shares allotted, called up and fully paid shares	133,856	104,832		104,832
Issued capital	£ 1.34	£ 1.05		£ 1.05
Number of other shares authorized for allotment		0
A ordinary
Disclosure of classes of share capital [line items]
Par value per share	£ 0.00001	£ 0.00001	£ 0.00001
Number of shares allotted, called up and fully paid shares	123,220	100,000		100,000
Issued capital	£ 1.23	£ 1		£ 1
B ordinary
Disclosure of classes of share capital [line items]
Par value per share	£ 0.00001	£ 0.00001	£ 0.00001
Number of shares allotted, called up and fully paid shares	4,832	4,832		4,832
Issued capital	£ 0.05	£ 0.05		£ 0.05
Ordinary shares authorized for allotment to fulfil future option exercises		25,973

Share capital and other reser_4

Share capital and other reserves - Other reserves (Details) - GBP (£)	Dec. 31, 2020	Jul. 01, 2020
Share capital.
Capital contribution From Reorganization	£ 4,160,000	£ 4,160,000

Share capital and other reser_5

Share capital and other reserves - Net parent investment (Details) - GBP (£)	Dec. 31, 2020	Jul. 01, 2020	Jun. 30, 2020	Dec. 31, 2019
Share capital.
Cash investments			£ 7,130,000	£ 11,003,000
Amount reclassified to Other reserves	£ 4,160,000	£ 4,160,000

Loans from related parties - Cu

Loans from related parties - Current loans and borrowings (Details) £ in Thousands	Dec. 31, 2020GBP (£)
Loans from related parties
Current loans from related parties	£ 6,309

Loans from related parties - Lo

Loans from related parties - Loan from Imagination Industries Ltd (Details) - GBP (£) £ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2021	Dec. 31, 2020
Loans from related parties
As at January 1	£ 6,309
Amounts advanced	2,945	£ 5,600
Interest charged	£ 483	709
As at June 30		£ 6,309
Interest rate		30.00%

Leases - Balance sheet shows th

Leases - Balance sheet shows the following amounts relating to lease liabilities (Details) - GBP (£) £ in Thousands	Jun. 30, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Lease liabilities [abstract]
Long term lease liabilities	£ 793	£ 846	£ 947
Current lease liabilities	£ 175	175	219
Total lease liabilities		£ 1,021	£ 1,166	£ 673

Leases - Lease liabilities matu

Leases - Lease liabilities maturity analysis (Details) - GBP (£) £ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Disclosure of maturity analysis of operating lease payments [line items]
Total lease liabilities (undiscounted)	£ 1,272	£ 1,491
Less than one year
Disclosure of maturity analysis of operating lease payments [line items]
Total lease liabilities (undiscounted)	175	219
Within 2 - 5 years
Disclosure of maturity analysis of operating lease payments [line items]
Total lease liabilities (undiscounted)	700	700
More than 5 years
Disclosure of maturity analysis of operating lease payments [line items]
Total lease liabilities (undiscounted)	£ 397	£ 572

Leases - Cash outflows related

Leases - Cash outflows related to leases (Details) - GBP (£) £ in Thousands	6 Months Ended		12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020	Dec. 31, 2019
Leases
Right of use assets	£ 87	£ 87	£ 220	£ 130
Low value leases				2
Short term leases			64	8
Total cash outflow			£ 284	£ 140

Leases - Reconciliation of the

Leases - Reconciliation of the finance lease creditors (Details) - GBP (£) £ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disclosure of quantitative information about right-of-use assets [line items]
Beginning balance	£ 1,166	£ 673
Additions due to changes in estimates		577
Interest element of payments to finance lease creditors	(74)	(46)
Principal element of payments to finance lease creditors	(145)	(84)
Interest expense on leases	74	46
Ending balance	£ 1,021	£ 1,166	£ 673
Bristol property
Disclosure of quantitative information about right-of-use assets [line items]
Lease agreement term			10 years
Term of lease terminate			5 years
Expected useful life of right-of-use asset		10 years	5 years

Provisions (Details)

Provisions (Details) - Dilapidation Provision - GBP (£) £ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Disclosure of other provisions [line items]
Beginning balance	£ 83	£ 77
Unwinding of discount	5	6
Ending balance	£ 88	£ 83

Trade and other payables (Detai

Trade and other payables (Details) - GBP (£)	Dec. 31, 2020	Dec. 31, 2019
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Outstanding defined contribution pension costs	£ 70,000	£ 0
Less than one year
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Trade payables	846,000	703,000
Accrued expenses	1,226,000	356,000
Amounts due to related parties	56,000	4,000
Social security and other taxes	203,000
Outstanding defined contribution pension costs	70,000
Other payables		8,000
Deferred consideration payable		300,000
Total trade and other payables	£ 2,401,000	1,371,000
After more than one year
Disclosure of information about terms and conditions of hedging instruments and how they affect future cash flows [line items]
Deferred consideration payable		£ 524,000

Pension and other schemes (Deta

Pension and other schemes (Details) - GBP (£)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Pension and other schemes
Pension cost, contributions payable	£ 271,000	£ 102,000
Outstanding defined contribution pension costs	£ 70,000	£ 0

Share-based payments - Movement

Share-based payments - Movements in the number of share options (Details)	12 Months Ended
	Dec. 31, 2020Options
Share-based payments
Outstanding, start of period	0
Granted during the period	16,817
Outstanding, end of period	16,817

Share-based payments - Moveme_2

Share-based payments - Movements in the weighted average exercise price of share options (Details)	12 Months Ended
	Dec. 31, 2020£ / shares
Share-based payments
Outstanding, start of period	£ 0
Granted during the period	143.28
Outstanding, end of period	£ 143.28

Share-based payments - Share op

Share-based payments - Share options outstanding (Details)	12 Months Ended
	Dec. 31, 2020Options£ / shares	Dec. 31, 2019Options£ / shares
Disclosure of terms and conditions of share-based payment arrangement [line items]
Weighted average exercise price	£ 143.28	£ 0
Number of share options outstanding | Options	16,817	0
Expected weighted average remaining vesting period (years)	1 year 1 month 17 days
Number of options exercisable | Options	7,635	0
Maximum [Member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Exercise prices	£ 204
Minimum [Member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Exercise prices	£ 38.22

Share-based payments - Fair val

Share-based payments - Fair value of options granted (Details) - GBP (£)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Share-based payments
Weighted average fair value per option of options granted	£ 6.70	£ 0
Share price at date of grant	£ 40.36
Expected volatility (%)	50.00%
Vesting period in years	1.13
Option life in years	4
Risk-free interest rate (%)	(0.13%)

Share-based payments - Share ba

Share-based payments - Share based payments charge (Details) - GBP (£)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Share-based payments
Charge recognized for equity settled share based payment transactions	£ 96,000	£ 0

Financial instruments - Financi

Financial instruments - Financial assets at amortized cost (Details) - Financial assets at amortized cost - GBP (£) £ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Financial assets
Carrying value	£ 3,638	£ 2,165
Fair value	3,638	2,165
Cash and cash equivalents.
Financial assets
Carrying value	839	1,029
Fair value	839	1,029
Trade and other receivables.
Financial assets
Carrying value	2,799	1,316
Fair value	£ 2,799	£ 1,316

Financial instruments - Finan_2

Financial instruments - Financial liabilities at amortized cost (Details) - Financial liabilities at amortized cost - GBP (£) £ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Financial liabilities
Carrying Value	£ 9,458	£ 3,061
Fair Value	9,458	3,061
Trade and other payables .
Financial liabilities
Carrying Value	2,128	1,895
Fair Value	2,128	1,895
Borrowings
Financial liabilities
Carrying Value	6,309
Fair Value	6,309
Lease liabilities.
Financial liabilities
Carrying Value	1,021	1,166
Fair Value	£ 1,021	£ 1,166

Financial instruments - Additio

Financial instruments - Additional Information (Details) - GBP (£)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Financial instruments
Total interest expense for financial liabilities not held at fair value through profit or loss	£ 801,000	£ 61,000

Financial risk management and_3

Financial risk management and impairment of financial assets - Credit risk and impairment (Details) - Credit risk - GBP (£)	Dec. 31, 2020	Dec. 31, 2019
Financial risk management and impairment of financial assets
Maximum exposure to credit risk	£ 2,799,000	£ 1,136,000
Allowance account for credit losses of financial assets	£ 0	£ 0

Financial risk management and_4

Financial risk management and impairment of financial assets - Liquidity risk (Details) - GBP (£) £ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Financial risk management and impairment of financial assets
Financial obligations	£ 9,982	£ 3,386
Less than one year
Financial risk management and impairment of financial assets
Financial obligations	8,885	1,590
Between 2 and 5 years
Financial risk management and impairment of financial assets
Financial obligations	700	1,224
More than 5 years
Financial risk management and impairment of financial assets
Financial obligations	397	572
Trade and other payables .
Financial risk management and impairment of financial assets
Financial obligations	2,401	1,895
Trade and other payables . | Less than one year
Financial risk management and impairment of financial assets
Financial obligations	2,401	1,371
Trade and other payables . | Between 2 and 5 years
Financial risk management and impairment of financial assets
Financial obligations		524
Lease liabilities.
Financial risk management and impairment of financial assets
Financial obligations	1,272	1,491
Lease liabilities. | Less than one year
Financial risk management and impairment of financial assets
Financial obligations	175	219
Lease liabilities. | Between 2 and 5 years
Financial risk management and impairment of financial assets
Financial obligations	700	700
Lease liabilities. | More than 5 years
Financial risk management and impairment of financial assets
Financial obligations	397	£ 572
Other borrowings
Financial risk management and impairment of financial assets
Financial obligations	6,309
Other borrowings | Less than one year
Financial risk management and impairment of financial assets
Financial obligations	£ 6,309

Financial risk management and_5

Financial risk management and impairment of financial assets - Capital management (Details)	Dec. 31, 2020GBP (£)
Financial risk management and impairment of financial assets
Borrowings from unrelated third parties	£ 0

Related party transactions - Ke

Related party transactions - Key management personnel (Details)	12 Months Ended
	Dec. 31, 2020item
Related party transactions
Number of key management personnel	3

Related party transactions - _2

Related party transactions - Key management compensation (Details) - GBP (£) £ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Related party transactions
Salaries and other short term employee benefits	£ 374	£ 181
Payments to defined contribution pension schemes	39	24
Share-based payments	92
Key management compensation	£ 504	£ 205

Related party transactions - Su

Related party transactions - Summary of other transactions with key management (Details) - GBP (£)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Key management personnel | Vertical Advanced Engineering Ltd
Related party transactions
Consideration paid	£ 300,000	£ 1,019,000

Related party transactions - _3

Related party transactions - Summary of transactions with other related parties (Details) - GBP (£)	6 Months Ended	12 Months Ended
	Jun. 30, 2021	Dec. 31, 2020	Dec. 31, 2019
Related party transactions
Loan from related party	£ 2,208,000	£ 5,600,000
Loans from related parties		6,309,000
Repayments of related party loan	£ (737,000)
Imagination Industries Ltd
Related party transactions
Loan from related party		£ 5,600,000	£ 0
Interest rate		30.00%
Interest charge		£ 709,000	0
Loans from related parties		6,309,000	0
Imagination Industries Incubator Ltd
Related party transactions
Management fees to related party		144,000	144,000
Loans from related parties		72,000	0
Imagination Industries Aero Ltd
Related party transactions
Loan from related party		440,000	0
Interest charge		0	0
Repayments of related party loan		457,000	0
Balance receivable from related party		17,000	£ 0
Business transferred to related party		£ 1

Non adjusting events after th_2

Non adjusting events after the reporting period (Details) £ in Thousands, $ in Millions	Jun. 10, 2021USD ($)shares	Mar. 31, 2021GBP (£)shares	Jun. 30, 2021GBP (£)shares
Non adjusting events after the reporting period
Consideration for issuance of shares | £			£ 9,000
A ordinary
Non adjusting events after the reporting period
Number of shares issued during the period | shares			23,220
Convertible notes..
Non adjusting events after the reporting period
Amount raised through issuance of debt | £		£ 25,000
Share transaction | A ordinary
Non adjusting events after the reporting period
Number of shares issued during the period | shares		23,220
Consideration for issuance of shares | £		£ 9,000
Share transaction | Z ordinary | American Airlines, Inc
Non adjusting events after the reporting period
Number of shares issued during the period | shares	5,804
Business combination agreement | Broadstone Acquisition Corp
Non adjusting events after the reporting period
Minimum cash closing condition | $	$ 240

CONDENSED BALANCE SHEETS

CONDENSED BALANCE SHEETS - CIK0001815805 BROADSTONE ACQUISITION CORP. - USD ($)	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Oct. 14, 2020	Sep. 30, 2020	Sep. 15, 2020	Jun. 30, 2020	May 12, 2020
Current assets:
Cash	$ 707,084			$ 1,605,045
Prepaid expenses	95,417			187,865
Total current assets	802,501			1,792,910
Investment held in Trust Account	305,332,346			305,311,303
Total Assets	306,134,847			307,104,213
Current liabilities:
Accounts payable	80,274			155,683
Accrued expenses	2,762,980			219
Total current liabilities	2,843,254			155,902
Warrant liabilities	25,240,908			26,175,756
Deferred underwriting commissions	10,685,605			10,685,605
Total liabilities	38,769,767			37,017,263
Commitments and contingencies
Shareholders' deficit
Preference shares, $0.0001 par value 1,000,000 shares authorized zero issued and outstanding
Accumulated deficit	(37,938,693)	$ (40,134,961)	$ (25,406,059)	(35,216,823)	$ (27,366,562)	$ (26,930,154)	$ (26,977,565)
Total shareholders' deficit	(37,937,930)	(40,134,198)	(25,405,296)	(35,216,060)	$ (27,310,669)	$ (26,929,291)	$ (26,976,702)	$ 14,268	$ 0
Total Liabilities, Class A Ordinary Shares Subject to Possible Redemption and Shareholders' Deficit	306,134,847			307,104,213
Class A ordinary shares
Current liabilities:
Class A ordinary shares; 30,530,301 shares subject to possible redemption at $10 per share as of September 30, 2021 and December 31, 2020	305,303,010	$ 305,303,010	$ 305,303,010	305,303,010
Class B ordinary shares
Shareholders' deficit
Common Stock	$ 763			$ 763

CONDENSED BALANCE SHEETS (Paren

CONDENSED BALANCE SHEETS (Parenthetical) - CIK0001815805 BROADSTONE ACQUISITION CORP. - $ / shares	Sep. 30, 2021	Dec. 31, 2020
Preferred stock, par value	$ 0.0001	$ 0.0001
Preferred stock, shares authorized	1,000,000	1,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Class A ordinary shares
Share subject to possible redemption (in shares)	30,530,301	30,530,301
Redemption Price	$ 10	$ 10
Common stock, par value	$ 0.0001	$ 0.0001
Common stock, shares authorized	200,000,000	200,000,000
Common stock, shares issued	0	0
Common stock, shares outstanding	0	0
Class B ordinary shares
Common stock, par value	$ 0.0001	$ 0.0001
Common stock, shares authorized	20,000,000	20,000,000
Common stock, shares issued	7,632,575	7,632,575
Common stock, shares outstanding	7,632,575	7,632,575

CONDENSED STATEMENTS OF OPERATI

CONDENSED STATEMENTS OF OPERATIONS - USD ($)	2 Months Ended	3 Months Ended				5 Months Ended	8 Months Ended	9 Months Ended
	Jun. 30, 2020	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2020	Sep. 30, 2020	Dec. 31, 2020	Sep. 30, 2021
CIK0001815805 BROADSTONE ACQUISITION CORP.
General and administrative expenses		$ 620,994			$ 732,832	$ 743,564	$ 922,064	$ 3,675,107
Loss from operations		(620,994)			(732,832)	(743,564)	(922,064)	(3,675,107)
Other income (expense):
Income earned on investments in Trust Account		4,611			2,200	2,200	8,293	21,043
Change in fair value of warrant liabilities		2,812,651			76,000	76,000	(7,852,756)	934,848
Foreign exchange gain/(loss)								2,654
Total other income (expense), net		2,817,262			78,200	78,200	(7,844,463)	953,237
Net income (loss)	$ (10,732)	$ 2,196,268	$ (14,728,902)	$ 9,810,764	$ (654,632)	$ (665,364)	$ (8,766,527)	$ (2,721,870)
Class A ordinary shares
Other income (expense):
Weighted average ordinary shares outstanding, Diluted		30,530,301			5,309,618	3,404,255		30,530,301
Basic net income (loss) per ordinary share		$ 0.06			$ (0.05)			$ (0.07)
Diluted net income (loss) per ordinary share						$ (0.06)
Class A ordinary shares | CIK0001815805 BROADSTONE ACQUISITION CORP.
Other income (expense):
Weighted average ordinary shares outstanding, Basic		30,530,301			5,309,618	3,404,255	14,320,851	30,530,301
Weighted average ordinary shares outstanding, Diluted		30,530,301			5,309,618	3,247,904	14,320,851	30,530,301
Basic net income (loss) per ordinary share		$ 0.06			$ (0.05)	$ (0.06)	$ (0.39)	$ (0.07)
Diluted net income (loss) per ordinary share		$ 0.06			$ (0.05)	$ (0.06)	$ (0.39)	$ (0.07)
Class B ordinary shares
Other income (expense):
Weighted average ordinary shares outstanding, Diluted		7,632,575			8,625,000	8,255,357		7,632,575
Basic net income (loss) per ordinary share		$ 0.06			$ (0.05)			$ (0.07)
Diluted net income (loss) per ordinary share						$ (0.06)
Class B ordinary shares | CIK0001815805 BROADSTONE ACQUISITION CORP.
Other income (expense):
Weighted average ordinary shares outstanding, Basic		7,632,575			8,625,000	8,255,357	8,113,263	7,632,575
Weighted average ordinary shares outstanding, Diluted		7,632,575			8,625,000	8,255,357	8,113,263	7,632,575
Basic net income (loss) per ordinary share		$ 0.06			$ (0.05)	$ (0.06)	$ (0.39)	$ (0.07)
Diluted net income (loss) per ordinary share		$ 0.06			$ (0.05)	$ (0.06)	$ (0.39)	$ (0.07)

CONDENSED STATEMENT OF CHANGES

CONDENSED STATEMENT OF CHANGES IN SHAREHOLDERS' DEFICIT - CIK0001815805 BROADSTONE ACQUISITION CORP. - USD ($)	Ordinary SharesClass A ordinary shares	Ordinary SharesClass B ordinary shares	Additional Paid-in Capital	Retained Earnings [Member]	Class A Redeemable Common Stock	Total
Balance at the beginning at May. 12, 2020	$ 0	$ 0	$ 0	$ 0		$ 0
Balance at the beginning (in shares) at May. 12, 2020	0	0
Issuance of Class B ordinary shares to Sponsor		$ 863	24,137			25,000
Issuance of Class B ordinary shares to Sponsor (in shares)		8,625,000
Net income (loss)				(10,732)		(10,732)
Balance at the ending at Jun. 30, 2020		$ 863	24,137	(10,732)		14,268
Balance at the ending (in shares) at Jun. 30, 2020		8,625,000
Balance at the beginning at May. 12, 2020	$ 0	$ 0	0	0		0
Balance at the beginning (in shares) at May. 12, 2020	0	0
Net income (loss)						(665,364)
Balance at the ending at Sep. 30, 2020		$ 863		(26,930,154)		(26,929,291)
Balance at the ending (in shares) at Sep. 30, 2020		8,625,000
Balance at the beginning at May. 12, 2020	$ 0	$ 0	0	0		0
Balance at the beginning (in shares) at May. 12, 2020	0	0
Issuance of Class B ordinary shares to Sponsor		$ 863	24,137			25,000
Issuance of Class B ordinary shares to Sponsor (in shares)		8,625,000
Forfeited Class B ordinary shares		$ (100)				(100)
Excess fair value of private placement warrants			1,654,167			1,654,167
Accretion of Class A ordinary Shares to redemption amount			(1,678,304)	(26,450,296)	$ 28,128,600	(28,128,600)
Net income (loss)				(8,766,527)		(8,766,527)
Balance at the ending at Dec. 31, 2020		$ 763		(35,216,823)		(35,216,060)
Balance at the ending (in shares) at Dec. 31, 2020		7,632,575
Balance at the beginning at Jun. 30, 2020		$ 863	24,137	(10,732)		14,268
Balance at the beginning (in shares) at Jun. 30, 2020		8,625,000
Excess fair value of private placement warrants			1,654,167			1,654,167
Accretion of Class A ordinary Shares to redemption amount			$ (1,678,304)	(26,264,790)		(27,943,094)
Net income (loss)				(654,632)		(654,632)
Balance at the ending at Sep. 30, 2020		$ 863		(26,930,154)		(26,929,291)
Balance at the ending (in shares) at Sep. 30, 2020		8,625,000
Balance at the beginning at Dec. 31, 2020		$ 763		(35,216,823)		(35,216,060)
Balance at the beginning (in shares) at Dec. 31, 2020		7,632,575
Net income (loss)				9,810,764		9,810,764
Balance at the ending at Mar. 31, 2021		$ 763		(25,406,059)		(25,405,296)
Balance at the ending (in shares) at Mar. 31, 2021		7,632,575
Balance at the beginning at Dec. 31, 2020		$ 763		(35,216,823)		(35,216,060)
Balance at the beginning (in shares) at Dec. 31, 2020		7,632,575
Net income (loss)						(2,721,870)
Balance at the ending at Sep. 30, 2021		$ 763		(37,938,693)		(37,937,930)
Balance at the ending (in shares) at Sep. 30, 2021		7,632,575
Balance at the beginning at Mar. 31, 2021		$ 763		(25,406,059)		(25,405,296)
Balance at the beginning (in shares) at Mar. 31, 2021		7,632,575
Net income (loss)				(14,728,902)		(14,728,902)
Balance at the ending at Jun. 30, 2021		$ 763		(40,134,961)		(40,134,198)
Balance at the ending (in shares) at Jun. 30, 2021		7,632,575
Net income (loss)				2,196,268		2,196,268
Balance at the ending at Sep. 30, 2021		$ 763		$ (37,938,693)		$ (37,937,930)
Balance at the ending (in shares) at Sep. 30, 2021		7,632,575

CONDENSED STATEMENTS OF CASH FL

CONDENSED STATEMENTS OF CASH FLOWS - CIK0001815805 BROADSTONE ACQUISITION CORP. - USD ($)	3 Months Ended		5 Months Ended	8 Months Ended	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2020	Dec. 31, 2020	Sep. 30, 2021
Cash Flows from Operating Activities:
Profit Loss			$ (665,364)	$ (8,766,527)	$ (2,721,870)
Adjustments to reconcile net loss to net cash used in operating activities:
General and administrative expenses paid by related parties			12,232	12,232
Income earned on investments in Trust Account	$ (4,611)	$ (2,200)	(2,200)	(8,293)	(21,043)
Change in fair value of warrant liabilities	(2,812,651)	(76,000)	(76,000)	7,852,756	(934,848)
Transactions allocated to warrant liabilities			677,570	677,570
Changes in operating assets and liabilities:
Prepaid expenses			(225,767)	(187,865)	92,488
Accounts payable			16,194	155,683	(75,409)
Accrued expenses			2,300	(74,781)	2,762,761
Net cash used in operating activities			(261,035)	(339,225)	(897,961)
Cash Flows from Investing Activities:
Cash deposited in Trust Account			(300,000,000)	(305,303,010)
Net cash used in investing activities			(300,000,000)	(305,303,010)
Cash Flows from Financing Activities:
Repayment of note payable to related parties			(132,713)	(132,713)
Proceeds received from initial public offering, gross			300,000,000	305,303,010
Proceeds received from private placement			8,000,000	8,106,060
Offering costs paid			(5,923,016)	(6,029,077)
Net cash provided by financing activities			301,994,271	307,247,280
Net change in cash			1,733,236	1,605,045	(897,961)
Cash - beginning of the period			0	0	1,605,045
Cash - ending of the period	$ 707,084	$ 1,683,236	1,683,236	1,605,045	$ 707,084
Supplemental disclosure of non-cash investing and financing activities:
Deferred underwriting commissions			10,500,000	10,685,605
Initial measurement of warrants issued in connection with initial public offering and private placement accounted for as liabilities			18,323,000	18,620,362
Offering costs paid in exchange for issuance of Class B ordinary shares to sponsor			25,000	25,000
Offering costs included in accrued expenses			75,000	75,000
Offering costs included in note payable			$ 120,481	$ 120,481

Description of Organization, Bu

Description of Organization, Business Operations and Basis of Presentation	8 Months Ended	9 Months Ended
	Dec. 31, 2020	Sep. 30, 2021
CIK0001815805 BROADSTONE ACQUISITION CORP.
Description of Organization, Business Operations and Basis of Presentation	Note 1—Description of Organization, Business Operations and Basis of Presentation Broadstone Acquisition Corp. (the “Company”) is a blank check company incorporated as a Cayman Islands exempted company on May 13, 2020. The Company was incorporated for the purpose of effecting a merger, share exchange, asset acquisition, share purchase, reorganization or similar business combination with one or more businesses that the Company has not yet identified (“Business Combination”). The Company is an emerging growth company and, as such, the Company is subject to all of the risks associated with emerging growth companies. As of December 31, 2020, the Company had not commenced any operations. All activity for the period from May 13, 2020 (inception) through December 31, 2020 relates to the Company’s formation and the initial public offering (“Initial Public Offering”) and since the closing of the Initial Public Offering, the search for a prospective initial Business Combination. The Company will not generate any operating revenues until after the completion of its initial Business Combination, at the earliest. The Company will generate non-operating income in the form of interest income on cash and cash equivalents from the proceeds derived from the Initial Public Offering. The Company has selected December 31 as its fiscal year end. The Company’s sponsor is Broadstone Sponsor LLP, a United Kingdom limited liability partnership (the “Sponsor”). The registration statement for the Initial Public Offering was declared effective on September 10, 2020. On September 15, 2020, the Company consummated the Initial Public Offering of 30,000,000 units (the “Units” and, with respect to the Class A ordinary shares included in the Units, the “Public Shares”), at $10.00 per Unit, generating gross proceeds of $300.0 million, and incurring offering costs of approximately $16.6 million, inclusive of approximately $10.5 million in deferred underwriting commissions (Note 5). The Company granted the underwriters in the Initial Public Offering a 45-day option to purchase up to 4,500,000 additional Units to cover over-allotments, if any. On October 14, 2020, the underwriters partially exercised the over-allotment option to purchase an additional 530,301 units (the “Over-Allotment Units”). On October 14, 2020, the Company completed the sale of the Over-Allotment Units to underwriters (the “Over-Allotment”), generating gross proceeds of approximately $5.3 million, and incurred additional offering costs of approximately $292,000 in underwriting fees (inclusive of approximately $186,000 in deferred underwriting commissions). Simultaneously with the closing of the Initial Public Offering, the Company consummated the private placement (“Private Placement”) of 8,000,000 warrants (each, a “Private Placement Warrant” and collectively, the “Private Placement Warrants”) to the Sponsor, each exercisable to purchase one Class A ordinary share at $11.50 per share, at a price of $1.00 per Private Placement Warrant, generating gross proceeds to the Company of approximately $8.0 million (Note 4). Simultaneously with the closing of the Over-Allotment Units, on October 14, 2020, the Company consummated the second closing of the Private Placement, resulting in the purchase of an aggregate of an additional 106,060 Private Placement Warrants by the Sponsor, generating gross proceeds to the Company of approximately $106,060. Upon the closing of the Initial Public Offering, the Over-Allotment and the Private Placement, $305.3 million ($10.00 per Unit) of the net proceeds of the Initial Public Offering and certain of the proceeds of the Private Placement were placed in a non-interest bearing trust account (“Trust Account”) located in the United States with Continental Stock Transfer & Trust Company acting as trustee. The net proceeds are not yet invested. If, in the future, the proceeds are held in an interest-bearing account, then the net proceeds may be invested only in United States “government securities” within the meaning of Section 2(a)(16) of the Investment Company Act of 1940, as amended, (the “Investment Company Act”) having a maturity of 185 days or less or in money market funds meeting certain conditions under Rule 2a-7 promulgated under the Investment Company Act which invest only in direct U.S. government treasury obligations, until the earlier of: (i) the completion of a Business Combination and (ii) the distribution of the Trust Account as described below. The Company’s management has broad discretion with respect to the specific application of the net proceeds of the Initial Public Offering and the sale of Private Placement Warrants, although substantially all of the net proceeds are intended to be applied generally toward consummating a Business Combination. There is no assurance that the Company will be able to complete a Business Combination successfully. The Company must complete one or more initial Business Combinations having an aggregate fair market value of at least 80% of the assets held in the Trust Account (as defined below) (excluding the deferred underwriting commissions and taxes payable on income earned on the Trust Account) at the time of the agreement to enter into the initial Business Combination. However, the Company will only complete a Business Combination if the post-transaction company owns or acquires 50% or more of the outstanding voting securities of the target or otherwise acquires a controlling interest in the target sufficient for it not to be required to register as an investment company under the Investment Company Act. The Company will provide holders (the “Public Shareholders”) of its Class A ordinary shares, par value $0.0001, sold in the Initial Public Offering (the “Public Shares”), with the opportunity to redeem all or a portion of their Public Shares upon the completion of a Business Combination either (i) in connection with a shareholder meeting called to approve the Business Combination or (ii) by means of a tender offer. The decision as to whether the Company will seek shareholder approval of a Business Combination or conduct a tender offer will be made by the Company, solely in its discretion. The Public Shareholders will be entitled to redeem their Public Shares for a pro rata portion of the amount then in the Trust Account (initially anticipated to be $10.00 per Public Share). The per-share amount to be distributed to Public Shareholders who redeem their Public Shares will not be reduced by the deferred underwriting commissions the Company will pay to the underwriters (as discussed in Note 5). These Public Shares will be classified as temporary equity upon the completion of the Initial Public Offering in accordance with the Financial Accounting Standards Board’s (“FASB”) Accounting Standards Codification (“ASC”) Topic 480 “Distinguishing Liabilities from Equity.” In such case, the Company will proceed with a Business Combination if the Company has net tangible assets of at least $5,000,001 and the approval of an ordinary resolution. If a shareholder vote is not required by law and the Company does not decide to hold a shareholder vote for business or other legal reasons, the Company will, pursuant to its Amended and Restated Memorandum and Articles of Association (the “Amended and Restated Memorandum and Articles of Association”), conduct the redemptions pursuant to the tender offer rules of the U.S. Securities and Exchange Commission (“SEC”) and file tender offer documents with the SEC prior to completing a Business Combination. If, however, shareholder approval of the transactions is required by law, or the Company decides to obtain shareholder approval for business or legal reasons, the Company will offer to redeem shares in conjunction with a proxy solicitation pursuant to the proxy rules and not pursuant to the tender offer rules. Additionally, each Public Shareholder may elect to redeem its Public Shares irrespective of whether it votes for or against the proposed transaction. If the Company seeks shareholder approval in connection with a Business Combination, the initial shareholders (as defined below) have agreed to vote their Founder Shares (as defined below in Note 4) and any Public Shares purchased during or after the Initial Public Offering in favor of a Business Combination. Subsequent to the consummation of the Initial Public Offering, the Company will adopt an insider trading policy which will require insiders to (i) refrain from purchasing shares during certain blackout periods and when they are in possession of any material non-public information and (ii) clear all trades with the Company’s legal counsel prior to execution. In addition, the initial shareholders have agreed to waive their redemption rights with respect to their Founder Shares and Public Shares in connection with the completion of a Business Combination. Notwithstanding the foregoing, the Amended and Restated Memorandum and Articles of Association provide that a Public Shareholder, together with any affiliate of such shareholder or any other person with whom such shareholder is acting in concert or as a “group” (as defined in Section 13 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”)), will be restricted from redeeming its shares with respect to more than an aggregate of 15% or more of the Class A ordinary shares sold in the Initial Public Offering, without the prior consent of the Company. The Company’s Sponsor, officers and directors (the “initial shareholders”) agreed not to propose an amendment to the Amended and Restated Memorandum and Articles of Association (A) that would modify the substance or timing of the Company’s obligation to allow redemption in connection with its initial business combination or to redeem 100% of its Public Shares if the Company does not complete a Business Combination within 24 months from the closing of the Initial Public Offering, or September 15, 2022 (the “Combination Period”) or (B) with respect to any other provision relating to shareholders’ rights or pre-initial Business Combination activity, unless the Company provides the Public Shareholders with the opportunity to redeem their Class A ordinary shares in conjunction with any such amendment. If the Company is unable to complete a Business Combination within the Combination Period, the Company will (i) cease all operations except for the purpose of winding up, (ii) as promptly as reasonably possible but not more than ten The Sponsor, officers and directors have agreed to waive their liquidation rights with respect to the Founder Shares if the Company fails to complete a Business Combination within the Combination Period. However, if the initial shareholders or members of the Company’s management team acquire Public Shares in or after the Initial Public Offering, they will be entitled to liquidating distributions from the Trust Account with respect to such Public Shares if the Company fails to complete a Business Combination within the Combination Period. The underwriters have agreed to waive their rights to their deferred underwriting commission (see Note 5) held in the Trust Account in the event the Company does not complete a Business Combination within the Combination Period and, in such event, such amount will be included with the other funds held in the Trust Account that will be available to fund the redemption of the Public Shares. In the event of such distribution, it is possible that the per share value of the residual assets remaining available for distribution (including Trust Account assets) will be only $10.00 per share initially held in the Trust Account. In order to protect the amounts held in the Trust Account, the Sponsor has agreed to be liable to the Company if and to the extent any claims by a vendor for services rendered or products sold to the Company, or a prospective target business with which the Company has discussed entering into a transaction agreement, reduce the amount of funds in the Trust Account. This liability will not apply with respect to any claims by a third party who executed a waiver of any right, title, interest or claim of any kind in or to any monies held in the Trust Account or to any claims under the Company’s indemnity of the underwriters of the Initial Public Offering against certain liabilities, including liabilities under the Securities Act. Moreover, in the event that an executed waiver is deemed to be unenforceable against a third party, the Sponsor will not be responsible to the extent of any liability for such third-party claims. The Company will seek to reduce the possibility that the Sponsor will have to indemnify the Trust Account due to claims of creditors by endeavoring to have all vendors, service providers (except for the Company’s independent registered public accounting firm), prospective target businesses or other entities with which the Company does business execute agreements with the Company waiving any right, title, interest or claim of any kind in or to monies held in the Trust Account. Basis of Presentation The accompanying financial statements are presented in U.S. dollars, in conformity with accounting principles generally accepted in the United States of America (“GAAP”) for financial information and pursuant to the rules and regulations of the SEC. As described in the Company’s Form 8-K filed on November 22, 2021 and in Note 2—Restatement of Previously Issued Financial Statements, the Company’s financial statements as of and for the period from May 13, 2020 (inception) through December 31, 2020, and the unaudited interim financial statements as of September 30, 2020, and for the three months ended September 30, 2020, and the period from May 13, 2020 (inception) through September 30, 2020 (collectively, the “2020 Affected Periods”), were restated in the Company’s Annual Report on Form 10-K/A (Amendment No. 2) (the “Annual Report”) to correct the misapplication of accounting guidance related to the Company’s Public Shares in the Company’s previously issued audited and unaudited condensed financial statements for such periods and related to the Company’s calculation of earnings per share. The restated financial statements are indicated as “Restated” in the audited and accompanying notes, as applicable. See Note 2—Restatement of Previously Issued Financial Statements for further discussion. Emerging Growth Company The Company is an “emerging growth company,” as defined in Section 2(a) of the Securities Act, as modified by the Jumpstart Our Business Startups Act of 2012 (the “JOBS Act”), and it may take advantage of certain exemptions from various reporting requirements that are applicable to other public companies that are not emerging growth companies including, but not limited to, not being required to comply with the auditor attestation requirements of Section 404 of the Sarbanes-Oxley Act of 2002, reduced disclosure obligations regarding executive compensation in its periodic reports and proxy statements, and exemptions from the requirements of holding a nonbinding advisory vote on executive compensation and stockholder approval of any golden parachute payments not previously approved. Further, Section 102(b)(1) of the JOBS Act exempts emerging growth companies from being required to comply with new or revised financial accounting standards until private companies (that is, those that have not had a Securities Act registration statement declared effective or do not have a class of securities registered under the Exchange Act) are required to comply with the new or revised financial accounting standards. The JOBS Act provides that an emerging growth company can elect to opt out of the extended transition period and comply with the requirements that apply to non-emerging growth companies but any such an election to opt out is irrevocable. The Company has elected not to opt out of such extended transition period, which means that when a standard is issued or revised and it has different application dates for public or private companies, the Company, as an emerging growth company, can adopt the new or revised standard at the time private companies adopt the new or revised standard. This may make comparison of the Company’s financial statements with another public company that is neither an emerging growth company nor an emerging growth company that has opted out of using the extended transition period difficult or impossible because of the potential differences in accounting standards used. Risk and Uncertainties On January 30, 2020, the World Health Organization (“WHO”) announced a global health emergency because of a new strain of coronavirus (the “COVID-19 outbreak”). In March 2020, the WHO classified the COVID-19 outbreak as a pandemic, based on the rapid increase in exposure globally. The full impact of the COVID-19 outbreak continues to evolve. The impact of the COVID-19 outbreak on the Company’s results of operations, financial position and cash flows will depend on future developments, including the duration and spread of the outbreak and related advisories and restrictions. These developments and the impact of the COVID-19 outbreak on the financial markets and the overall economy are highly uncertain and cannot be predicted. If the financial markets and/or the overall economy are impacted for an extended period, the Company’s results of operations, financial position and cash flows may be materially adversely affected. Additionally, the Company’s ability to complete an Initial Business Combination may be materially adversely affected due to significant governmental measures being implemented to contain the COVID-19 outbreak or treat its impact, including travel restrictions, the shutdown of businesses and quarantines, among others, which may limit the Company’s ability to have meetings with potential investors or affect the ability of a potential target company’s personnel, vendors and service providers to negotiate and consummate an Initial Business Combination in a timely manner. The Company’s ability to consummate an Initial Business Combination may also be dependent on the ability to raise additional equity and debt financing, which may be impacted by the COVID-19 outbreak and the resulting market downturn. Liquidity and Capital Resources As of December 31, 2020, the Company had approximately $1.6 million in its operating bank account and working capital of approximately $1.6 million. To date, the Company’s liquidity needs have been satisfied through a payment of $25,000 from the Sponsor to cover certain expenses on behalf of the Company in exchange for the issuance of the Founder Shares (as defined in Note 4), a loan of approximately $133,000 pursuant to the Note issued to the Sponsor (Note 4) and the net proceeds from the consummation of the Private Placement not held in the Trust Account. The Company fully repaid the Note on September 15, 2020. In addition, in order to finance transaction costs in connection with a Business Combination, the Company’s officers, directors and Initial Shareholders may, but are not obligated to, provide the Company Working Capital Loans (see Note 5). To date, there were no amounts outstanding under any Working Capital Loans. The Company will be using funds held outside of the Trust Account for paying existing accounts payable, identifying and evaluating prospective initial Business Combination candidates, performing due diligence on prospective target businesses, paying for travel expenditures, selecting the target business to merge with or acquire, and structuring, negotiating and consummating the Business Combination. Management continues to evaluate the impact of the COVID-19 pandemic and has concluded that the specific impact is not readily determinable as of the date of the financial statements. The financial statements do not include any adjustments that might result from the outcome of this uncertainty.	Note 1—Description of Organization, Business Operations and Basis of Presentation Broadstone Acquisition Corp. (the “Company”) is a blank check company incorporated as a Cayman Islands exempted company on May 13, 2020. The Company was incorporated for the purpose of effecting a merger, share exchange, asset acquisition, share purchase, reorganization or similar business combination with one or more businesses that the Company has not yet identified (“Business Combination”). The Company is an emerging growth company and, as such, the Company is subject to all of the risks associated with emerging growth companies. As of September 30, 2021, the Company had not commenced any operations. All activity for the period from May 13, 2020 (inception) through September 30, 2021 relates to the Company’s formation and the initial public offering (“Initial Public Offering”) and since the closing of the Initial Public Offering, the search for a prospective initial Business Combination. The Company will not generate any operating revenues until after the completion of its initial Business Combination, at the earliest. The Company will generate non-operating income in the form of interest income on cash and cash equivalents from the proceeds derived from the Initial Public Offering. The Company’s sponsor is Broadstone Sponsor LLP, a United Kingdom limited liability partnership (the “Sponsor”). The registration statement for the Initial Public Offering was declared effective on September 10, 2020. On September 15, 2020, the Company consummated the Initial Public Offering of 30,000,000 units (the “Units” and, with respect to the Class A ordinary shares included in the Units, the “Public Shares”), at $10.00 per Unit, generating gross proceeds of $300.0 million, and incurring offering costs of approximately $16.6 million, inclusive of approximately $10.5 million in deferred underwriting commissions (Note 3). The Company granted the underwriters in the Initial Public Offering a 45-day option to purchase up to 4,500,000 additional Units to cover over-allotments, if any. On October 14, 2020, the underwriters partially exercised the over-allotment option to purchase an additional 530,301 units (the “Over-Allotment Units”). On October 14, 2020, the Company completed the sale of the Over-Allotment Units to underwriters (the “Over-Allotment”), generating gross proceeds of approximately $5.3 million, and incurred additional offering costs of approximately $292,000 in underwriting fees (inclusive of approximately $186,000 in deferred underwriting commissions). Simultaneously with the closing of the Initial Public Offering, the Company consummated the private placement (“Private Placement”) of 8,000,000 warrants (each, a “Private Placement Warrant” and collectively, the “Private Placement Warrants”) to the Sponsor, each exercisable to purchase one Class A ordinary share at $11.50 per share, at a price of $1.00 per Private Placement Warrant, generating gross proceeds to the Company of approximately $8.0 million (Note 4). Simultaneously with the closing of the Over-Allotment Units, on October 14, 2020, the Company consummated the second closing of the Private Placement, resulting in the purchase of an aggregate of an additional 106,060 Private Placement Warrants by the Sponsor, generating gross proceeds to the Company of approximately $106,060. Upon the closing of the Initial Public Offering, the Over-Allotment and the Private Placement, $305.3 million ($10.00 per Unit) of the net proceeds of the Initial Public Offering and certain of the proceeds of the Private Placement was placed in a trust account (“Trust Account”), located in the United States at J.P. Morgan Chase Bank, N.A., with Continental Stock Transfer & Trust Company acting as trustee, and was invested only in United States “government securities” within the meaning of Section 2(a)(16) of the Investment Company Act of 1940, as amended, (the “Investment Company Act”) having a maturity of 185 days or less or in money market funds meeting certain conditions under Rule 2a-7 promulgated under the Investment Company Act that invest only in direct U.S. government treasury obligations, until the earlier of (i) the completion of a Business Combination and (ii) the distribution of the Trust Account as described below. The Company’s management has broad discretion with respect to the specific application of the net proceeds of the Initial Public Offering and the sale of Private Placement Warrants, although substantially all of the net proceeds are intended to be applied generally toward consummating a Business Combination. There is no assurance that the Company will be able to complete a Business Combination successfully. The Company must complete one or more initial Business Combinations having an aggregate fair market value of at least 80% of the assets held in the Trust Account (as defined below) (excluding the deferred underwriting commissions and taxes payable on income earned on the Trust Account) at the time of the agreement to enter into the initial Business Combination. However, the Company will only complete a Business Combination if the post-transaction company owns or acquires 50% or more of the outstanding voting securities of the target or otherwise acquires a controlling interest in the target sufficient for it not to be required to register as an investment company under the Investment Company Act. The Company will provide holders (the “Public Shareholders”) of its Class A ordinary shares, par value $0.0001, sold in the Initial Public Offering (the “Public Shares”), with the opportunity to redeem all or a portion of their Public Shares upon the completion of a Business Combination either (i) in connection with a shareholder meeting called to approve the Business Combination or (ii) by means of a tender offer. The decision as to whether the Company will seek shareholder approval of a Business Combination or conduct a tender offer will be made by the Company, solely in its discretion. The Public Shareholders will be entitled to redeem their Public Shares for a pro rata portion of the amount then in the Trust Account (initially anticipated to be $10.00 per Public Share). The per-share amount to be distributed to Public Shareholders who redeem their Public Shares will not be reduced by the deferred underwriting commissions the Company will pay to the underwriters (as discussed in Note 5). These Public Shares will be classified as temporary equity upon the completion of the Initial Public Offering in accordance with the Financial Accounting Standards Board’s (“FASB”) Accounting Standards Codification (“ASC”) Topic 480 “Distinguishing Liabilities from Equity.” In such case, the Company will proceed with a Business Combination if the Company has net tangible assets of at least $5,000,001 and the approval of an ordinary resolution. If a shareholder vote is not required by law and the Company does not decide to hold a shareholder vote for business or other legal reasons, the Company will, pursuant to its Amended and Restated Memorandum and Articles of Association (the “Amended and Restated Memorandum and Articles of Association”), conduct the redemptions pursuant to the tender offer rules of the U.S. Securities and Exchange Commission (“SEC”) and file tender offer documents with the SEC prior to completing a Business Combination. If, however, shareholder approval of the transactions is required by law, or the Company decides to obtain shareholder approval for business or legal reasons, the Company will offer to redeem shares in conjunction with a proxy solicitation pursuant to the proxy rules and not pursuant to the tender offer rules. Additionally, each Public Shareholder may elect to redeem its Public Shares irrespective of whether it votes for or against the proposed transaction. If the Company seeks shareholder approval in connection with a Business Combination, the initial shareholders (as defined below) have agreed to vote their Founder Shares (as defined below in Note 4) and any Public Shares purchased during or after the Initial Public Offering in favor of a Business Combination. Subsequent to the consummation of the Initial Public Offering, the Company will adopt an insider trading policy which will require insiders to (i) refrain from purchasing shares during certain blackout periods and when they are in possession of any material non-public information and (ii) clear all trades with the Company’s legal counsel prior to execution. In addition, the initial shareholders have agreed to waive their redemption rights with respect to their Founder Shares and Public Shares in connection with the completion of a Business Combination. Notwithstanding the foregoing, the Amended and Restated Memorandum and Articles of Association provide that a Public Shareholder, together with any affiliate of such shareholder or any other person with whom such shareholder is acting in concert or as a “group” (as defined in Section 13 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”)), will be restricted from redeeming its shares with respect to more than an aggregate of 15% or more of the Class A ordinary shares sold in the Initial Public Offering, without the prior consent of the Company. The Company’s Sponsor, officers and directors (the “initial shareholders”) agreed not to propose an amendment to the Amended and Restated Memorandum and Articles of Association (A) that would modify the substance or timing of the Company’s obligation to allow redemption in connection with its initial business combination or to redeem 100% of its Public Shares if the Company does not complete a Business Combination within 24 months from the closing of the Initial Public Offering, or September 15, 2022 (the “Combination Period”) or (B) with respect to any other provision relating to shareholders’ rights or pre-initial Business Combination activity, unless the Company provides the Public Shareholders with the opportunity to redeem their Class A ordinary shares in conjunction with any such amendment. If the Company is unable to complete a Business Combination within the Combination Period, the Company will (i) cease all operations except for the purpose of winding up, (ii) as promptly as reasonably possible but not more than ten The Sponsor, officers and directors have agreed to waive their liquidation rights with respect to the Founder Shares if the Company fails to complete a Business Combination within the Combination Period. However, if the initial shareholders or members of the Company’s management team acquire Public Shares in or after the Initial Public Offering, they will be entitled to liquidating distributions from the Trust Account with respect to such Public Shares if the Company fails to complete a Business Combination within the Combination Period. The underwriters have agreed to waive their rights to their deferred underwriting commission (see Note 5) held in the Trust Account in the event the Company does not complete a Business Combination within the Combination Period and, in such event, such amount will be included with the other funds held in the Trust Account that will be available to fund the redemption of the Public Shares. In the event of such distribution, it is possible that the per share value of the residual assets remaining available for distribution (including Trust Account assets) will be only $10.00 per share initially held in the Trust Account. In order to protect the amounts held in the Trust Account, the Sponsor has agreed to be liable to the Company if and to the extent any claims by a vendor for services rendered or products sold to the Company, or a prospective target business with which the Company has discussed entering into a transaction agreement, reduce the amount of funds in the Trust Account. This liability will not apply with respect to any claims by a third party who executed a waiver of any right, title, interest or claim of any kind in or to any monies held in the Trust Account or to any claims under the Company’s indemnity of the underwriters of the Initial Public Offering against certain liabilities, including liabilities under the Securities Act of 1933, as amended (the “Securities Act”). Moreover, in the event that an executed waiver is deemed to be unenforceable against a third party, the Sponsor will not be responsible to the extent of any liability for such third-party claims. The Company will seek to reduce the possibility that the Sponsor will have to indemnify the Trust Account due to claims of creditors by endeavoring to have all vendors, service providers (except for the Company’s independent registered public accounting firm), prospective target businesses or other entities with which the Company does business execute agreements with the Company waiving any right, title, interest or claim of any kind in or to monies held in the Trust Account. Basis of Presentation The accompanying unaudited condensed financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) for interim financial information and in accordance with the instructions to Form 10-Q and Article 8 of Regulation S-X of the SEC. Certain information or footnote disclosures normally included in the financial statements prepared in accordance with GAAP have been condensed or omitted, pursuant to the rules and regulations of the SEC for interim financial reporting. Accordingly, they do not include all the information and footnotes necessary for a complete presentation of financial position, results of operations, or cash flows. In the opinion of management, the accompanying unaudited condensed financial statements include all adjustments, consisting of a normal recurring nature, which are necessary for a fair presentation of the financial position, operating results and cash flows for the periods presented. The accompanying unaudited condensed financial statements should be read in conjunction with the Company’s Annual Report on Form 10-K/A Amendment No. 2 for the period from May 13, 2020 (inception) through December 31, 2020, as filed with the SEC on November 22, 2021, which contains the audited financial statements and notes thereto. The financial information as of December 31, 2020 is derived from the audited financial statements presented in the Company’s Annual Report on Form 10-K/A Amendment No. 2 for the year ended December 31, 2020. The interim results for the three and nine months ended September 30, 2021 are not necessarily indicative of the results to be expected for the year ending December 31, 2021 or for any future interim periods. Emerging Growth Company The Company is an “emerging growth company,” as defined in Section 2(a) of the Securities Act, as modified by the Jumpstart Our Business Startups Act of 2012 (the “JOBS Act”), and it may take advantage of certain exemptions from various reporting requirements that are applicable to other public companies that are not emerging growth companies including, but not limited to, not being required to comply with the auditor attestation requirements of Section 404 of the Sarbanes-Oxley Act of 2002, reduced disclosure obligations regarding executive compensation in its periodic reports and proxy statements, and exemptions from the requirements of holding a nonbinding advisory vote on executive compensation and stockholder approval of any golden parachute payments not previously approved. Further, Section 102(b)(1) of the JOBS Act exempts emerging growth companies from being required to comply with new or revised financial accounting standards until private companies (that is, those that have not had a Securities Act registration statement declared effective or do not have a class of securities registered under the Exchange Act) are required to comply with the new or revised financial accounting standards. The JOBS Act provides that an emerging growth company can elect to opt out of the extended transition period and comply with the requirements that apply to non-emerging growth companies but any such an election to opt out is irrevocable. The Company has elected not to opt out of such extended transition period, which means that when a standard is issued or revised and it has different application dates for public or private companies, the Company, as an emerging growth company, can adopt the new or revised standard at the time private companies adopt the new or revised standard. This may make comparison of the Company’s financial statements with another public company that is neither an emerging growth company nor an emerging growth company that has opted out of using the extended transition period difficult or impossible because of the potential differences in accounting standards used. Risk and Uncertainties On January 30, 2020, the World Health Organization (“WHO”) announced a global health emergency because of a new strain of coronavirus (the “COVID-19 outbreak”). In March 2020, the WHO classified the COVID-19 outbreak as a pandemic, based on the rapid increase in exposure globally. The full impact of the COVID-19 outbreak continues to evolve. The impact of the COVID-19 outbreak on the Company’s results of operations, financial position and cash flows will depend on future developments, including the duration and spread of the outbreak and related advisories and restrictions. These developments and the impact of the COVID-19 outbreak on the financial markets and the overall economy are highly uncertain and cannot be predicted. If the financial markets and/or the overall economy are impacted for an extended period, the Company’s results of operations, financial position and cash flows may be materially adversely affected. Additionally, the Company’s ability to complete an Initial Business Combination may be materially adversely affected due to significant governmental measures being implemented to contain the COVID-19 outbreak or treat its impact, including travel restrictions, the shutdown of businesses and quarantines, among others, which may limit the Company’s ability to have meetings with potential investors or affect the ability of a potential target company’s personnel, vendors and service providers to negotiate and consummate an Initial Business Combination in a timely manner. The Company’s ability to consummate an Initial Business Combination may also be dependent on the ability to raise additional equity and debt financing, which may be impacted by the COVID-19 outbreak and the resulting market downturn. Going Concern In connection with the Company’s assessment of going concern considerations in accordance with FASB’s Accounting Standards Update (“ASU”) 2014-15, “Disclosures of Uncertainties about an Entity’s Ability to Continue as a Going Concern,” management has determined that if the Company is unable to complete a Business Combination by September 15, 2022, then the Company will cease all operations except for the purpose of liquidating. Further, as of September 30, 2021, we had approximately $0.7 million in our operating bank account and working capital deficit of approximately $(2.0) million. The date for mandatory liquidation and subsequent dissolution as well as the Company’s current cash balance and working capital deficit raise substantial doubt about the Company’s ability to continue as a going concern. No adjustments have been made to the carrying amounts of assets or liabilities should the Company be required to liquidate after September 15, 2022. The Company intends to complete a Business Combination before the mandatory liquidation date.

Restatement of Previously Issue

Restatement of Previously Issued Financial Statements	8 Months Ended	9 Months Ended
	Dec. 31, 2020	Sep. 30, 2021
CIK0001815805 BROADSTONE ACQUISITION CORP.
Restatement of Previously Issued Financial Statements	Note 2— Restatement of Previously Issued Financial Statements The Company concluded it should restate its previously issued financial statements by amending Amendment No. 1 to its Annual Report on Form 10-K/A, filed with the SEC on June 10, 2021, to classify all Class A ordinary shares subject to possible redemption in temporary equity. In accordance with the SEC and its staff’s guidance on redeemable equity instruments, ASC 480, paragraph 10-S99, redemption provisions not solely within the control of the Company require ordinary shares subject to redemption to be classified outside of permanent equity. The Company had previously classified a portion of its Class A ordinary shares in permanent equity, or total stockholders’ equity. Although the Company did not specify a maximum redemption threshold, its charter currently provides that, the Company will not redeem its public shares in an amount that would cause its net tangible assets to be less than $5,000,001. Previously, the Company did not consider redeemable shares classified as temporary equity as part of net tangible assets. Effective with these financial statements, the Company revised this interpretation to include temporary equity in net tangible assets. Also, in connection with the change in presentation for the Class A ordinary shares subject to possible redemption, the Company also revised its earnings per share calculation to allocate income and losses shared pro rata between the two classes of shares. This presentation contemplates a Business Combination as the most likely outcome, in which case, both classes of shares share pro rata in the income and losses of the Company. As a result, the Company restated its previously filed financial statements to present all redeemable Class A ordinary shares as temporary equity and to recognize accretion from the initial book value to redemption value at the time of its Initial Public Offering and in accordance with ASC 480. The Company’s previously filed financial statements that contained the error were initially reported in the Company’s Form 8-K filed with the SEC on September 21, 2020 (the “Post-IPO Balance Sheet”), the Company’s Form 10-Q for the quarterly period ended September 30, 2020, the Company’s Form 8-K filed with the SEC on October 20, 2020 (the “As Adjusted Balance Sheet”) for partial exercise of over-allotment option by the underwriters, and the Company's Annual Report on 10-K for the annual period ended December 31, 2020, which were previously restated in the Company's Amendment No. 1 to its Form 10-K/A as filed with the SEC on June 10, 2021, as well as the Form 10-Qs for the quarterly periods ended September 30, 2020 (the “Affected Period”). These financial statements restate the Company’s previously issued audited and unaudited financial statements covering the periods through December 31, 2020. The quarterly periods ended March 31, 2021 and June 30, 2021 will be restated in the Company’s Form 10-Q for the quarterly period ended September 30, 2021. Please see Note 3, Note 7 and Note 8, which have been updated to reflect the restatement of the financials contained in the Annual Report. Subsequent to our previously issued Form 10-K/A on June 9, 2021, in connection with the Company’s assessment of going concern considerations in accordance with FASB’s Accounting Standards Update (“ASU”) 2014-15, “Disclosures of Uncertainties about an Entity’s Ability to Continue as a Going Concern,” management has determined that if the Company is unable to complete a Business Combination by September 15, 2022, then the Company will cease all operations except for the purpose of liquidating. The date for mandatory liquidation and subsequent dissolution as well as the Company’s current cash balance and working capital deficit raise substantial doubt about the Company’s ability to continue as a going concern. No adjustments have been made to the carrying amounts of assets or liabilities should the Company be required to liquidate after September 15, 2022. The Company intends to complete a Business Combination before the mandatory liquidation date. The following tables summarize the effect of the restatement on each financial statement line item as of the dates and for the period indicated: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ As Reported ​ ​ ​ ​ ​ ​ ​ ​ As Previously ​ ​ ​ ​ ​ ​ ​ Restated in ​ ​ ​ ​ ​ ​ 10 K/A Amendment ​ ​ ​ ​ ​ ​ ​ ​ No. 1 ​ Adjustment ​ As Restated Balance Sheet as of September 15, 2020 (unaudited) ​ ​ ​ ​ ​ ​ ​ ​ ​ Class A ordinary shares subject to possible redemption ​ $ 268,023,290 ​ $ 31,976,710 ​ $ 300,000,000 Class A ordinary shares ​ 320 ​ (320) ​ — Additional paid-in capital ​ 5,711,600 ​ (5,711,600) ​ — Retained earnings (accumulated deficit) ​ ​ (712,775) ​ ​ (26,264,790) ​ ​ (26,977,565) Total shareholders’ equity (deficit) ​ $ 5,000,008 ​ $ (31,976,710) ​ $ (26,976,702) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Balance Sheet as of September 30, 2020 (unaudited) ​ ​ ​ ​ ​ ​ ​ ​ ​ Class A ordinary shares subject to possible redemption ​ $ 268,070,700 ​ $ 31,929,300 ​ $ 300,000,000 Class A ordinary shares ​ 319 ​ (319) ​ — Additional paid-in capital ​ 5,664,191 ​ (5,664,191) ​ — Retained earnings (accumulated deficit) ​ ​ (665,364) ​ ​ (26,264,790) ​ ​ (26,930,154) Total shareholders’ equity (deficit) ​ $ 5,000,009 ​ $ (31,929,300) ​ $ (26,929,291) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Balance Sheet as of October 14, 2020 (unaudited) ​ ​ ​ Class A ordinary shares subject to possible redemption ​ $ 272,992,338 ​ $ 32,310,672 ​ $ 305,303,010 Class A ordinary shares ​ 324 ​ (324) ​ — Additional paid-in capital ​ 5,859,953 ​ (5,859,953) ​ — Retained earnings (accumulated deficit) ​ ​ (861,137) ​ ​ (26,450,395) ​ ​ (27,366,562) Total shareholders’ equity (deficit) ​ $ 5,000,003 ​ $ (32,310,672) ​ $ (27,310,669) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Balance Sheet as of December 31, 2020 ​ ​ ​ Class A ordinary shares subject to possible redemption ​ $ 265,086,944 ​ $ 40,216,066 ​ $ 305,303,010 Class A ordinary shares ​ 402 ​ (402) ​ — Additional paid-in capital ​ 13,765,368 ​ (13,765,368) ​ — Retained earnings (accumulated deficit) ​ ​ (8,766,527) ​ ​ (26,450,296) ​ ​ (35,216,823) Total shareholders’ equity (deficit) ​ $ 5,000,006 ​ $ (40,216,066) ​ $ (35,216,060) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Statement of Operations for the three months ended September 30, 2020 (unaudited) ​ ​ ​ ​ ​ ​ ​ ​ ​ Net loss ​ $ (654,632) ​ $ — ​ $ (654,632) Weighted average shares outstanding – Class A ​ ​ 30,000,000 ​ ​ (24,690,382) ​ ​ 5,309,618 Basic and diluted net loss per ordinary share – Class A ​ $ 0.00 ​ $ (0.05) ​ $ (0.05) Weighted average shares outstanding – Class B ​ ​ 8,625,000 ​ ​ — ​ ​ 8,625,000 Basic and diluted net loss per ordinary share – Class B ​ $ (0.01) ​ $ (0.04) ​ $ (0.05) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Statement of Operations for the period from May 13, 2020 (inception) through September 30, 2020 (unaudited) ​ ​ ​ ​ ​ ​ ​ ​ ​ Net loss ​ $ (665,364) ​ $ — ​ $ (665,364) Weighted average shares outstanding – Class A ​ ​ 30,000,000 ​ ​ (26,752,096) ​ ​ 3,247,904 Basic and diluted net loss per ordinary share – Class A ​ $ 0.00 ​ $ (0.06) ​ $ (0.06) Weighted average shares outstanding – Class B ​ ​ 8,625,000 ​ ​ (369,643) ​ ​ 8,255,357 Basic and diluted net loss per ordinary share – Class B ​ $ (0.01) ​ $ (0.05) ​ $ (0.06) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Statement of Operations for the period from May 13, 2020 (inception) through December 31, 2020 ​ ​ ​ Net loss ​ $ (8,766,527) ​ $ — ​ $ (8,766,527) Weighted average shares outstanding – Class A ​ ​ 30,387,905 ​ ​ (16,067,054) ​ ​ 14,320,851 Basic and diluted net loss per ordinary share – Class A ​ $ 0.00 ​ $ (0.39) ​ $ (0.39) Weighted average shares outstanding – Class B ​ ​ 7,539,714 ​ ​ 573,549 ​ ​ 8,113,263 Basic and diluted net loss per ordinary share – Class B ​ $ (1.16) ​ $ 0.77 ​ $ (0.39) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Statement of Cash Flows for the period from May 13, 2020 (inception) through September 30, 2020 ​ ​ ​ Supplemental disclosure of non-cash investing and financing activities: ​ ​ ​ ​ ​ ​ ​ ​ ​ Initial value of Class A ordinary shares subject to possible redemption ​ $ 267,994,700 ​ $ (267,994,700) ​ $ — Change in value of Class A ordinary shares subject to possible redemption ​ $ 76,000 ​ $ (76,000) ​ $ — ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Statement of Cash Flows for the period from May 13, 2020 (inception) through December 31, 2020 ​ ​ ​ ​ ​ ​ ​ ​ ​ Supplemental disclosure of non-cash investing and financing activities: ​ ​ ​ ​ ​ ​ Initial value of Class A ordinary shares subject to possible redemption ​ $ 268,023,290 ​ $ (268,023,290) ​ $ — Change in value of Class A ordinary shares subject to possible redemption ​ $ (2,936,346) ​ $ 2,936,346 ​ $ — ​	Note 2 — Restatement of Previously Issued Financial Statements Restatement of Previously Issued Financial Statements Management identified errors made in its historical financial statements where, at the closing of the Company’s initial public offering (“Initial Public Offering”), the Company improperly valued its ordinary shares subject to possible redemption. The Company previously determined the ordinary shares subject to possible redemption to be equal to the redemption value of $10.00 per share of ordinary shares while also taking into consideration a redemption cannot result in net tangible assets being less than $5,000,001. Management determined that the Public Shares issued during the Initial Public Offering can be redeemed or become redeemable subject to the occurrence of future events considered outside the Company’s control. Therefore, management concluded that the redemption value should include all ordinary shares subject to possible redemption, resulting in the ordinary shares subject to possible redemption being equal to their redemption value. As a result, management has noted an error related to temporary equity and permanent equity. This resulted in an adjustment to the initial carrying value of the ordinary shares subject to possible redemption with the offset recorded to additional paid-in capital and ordinary shares. In addition, in connection with the change in presentation for the Public Shares, the Company determined it should restate its earnings per share calculation to allocate income and losses shared pro rata between the two classes of shares. This presentation contemplates a Business Combination as the most likely outcome, in which case, both classes of shares share pro rata in the income and losses of the Company. In addition, management identified an error as it relates to the accounting for accrued expenses as of September 30, 2021 and the related general and administrative expenses for the three months ended September 30, 2021. The following tables summarize the effect of the restatement on each financial statement line item as of the dates and for the period indicated: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ As ​ ​ ​ ​ ​ ​ ​ ​ Previously ​ ​ ​ ​ ​ ​ Reported Adjustment As Restated Balance Sheet as of March 31, 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ Class A ordinary shares subject to possible redemption ​ $ 274,897,708 ​ $ 30,405,302 $ 305,303,010 Class A ordinary shares ​ ​ 304 ​ ​ (304) ​ ​ — Additional paid-in capital ​ ​ 3,954,702 ​ ​ (3,954,702) ​ ​ — Retained earnings (accumulated deficit) ​ ​ 1,044,237 ​ ​ (26,450,296) ​ ​ (25,406,059) Total shareholders’ equity (deficit) ​ $ 5,000,006 $ (30,405,302) ​ $ (25,405,296) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Balance Sheet as of June 30, 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ Class A ordinary shares subject to possible redemption ​ $ 260,168,806 ​ $ 45,134,204 ​ $ 305,303,010 Class A ordinary shares ​ ​ 451 ​ ​ (451) ​ ​ — Additional paid-in capital ​ ​ 18,683,457 ​ ​ (18,683,457) ​ ​ — Accumulated deficit ​ ​ (13,684,665) ​ ​ (26,450,296) ​ ​ (40,134,961) Total shareholders’ equity (deficit) ​ $ 5,000,006 ​ $ (45,134,204) ​ $ (40,134,198) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Balance Sheet as of September 30, 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ Accrual expenses ​ $ 5,097,232 ​ $ (2,334,252) ​ $ 2,762,980 Total current liabilities ​ ​ 5,177,506 ​ ​ (2,334,252) ​ ​ 2,843,254 Total liabilities ​ ​ 41,104,019 ​ ​ (2,334,252) ​ ​ 38,769,767 Accumulated deficit ​ ​ (40,272,945) ​ ​ 2,334,252 ​ ​ (37,938,693) Total shareholders’ deficit ​ $ (40,272,182) ​ $ 2,334,252 ​ $ (37,937,930) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Statement of Operations for the three months ending September 30, 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ General and administrative expenses ​ $ 2,955,246 ​ $ (2,334,252) ​ $ 620,994 Loss from operations ​ ​ (2,955,246) ​ ​ 2,334,252 ​ ​ (620,994) Net income (loss) ​ ​ (137,984) ​ ​ 2,334,252 ​ ​ 2,196,268 Basic and diluted net income per ordinary share, Class A ​ ​ 0.00 ​ ​ 0.06 ​ ​ 0.06 Basic and diluted net income per ordinary share, Class B ​ $ 0.00 ​ $ 0.06 ​ $ 0.06 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Statement of Operations for the nine months ending September 30, 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ General and administrative expenses ​ $ 6,009,359 ​ $ (2,334,252) ​ $ 3,675,107 Loss from operations ​ ​ (6,009,359) ​ ​ 2,334,252 ​ ​ (3,675,107) Net loss ​ ​ (5,056,122) ​ ​ 2,334,252 ​ ​ (2,721,870) Basic and diluted net loss per ordinary share, Class A ​ ​ (0.13) ​ ​ 0.06 ​ ​ (0.07) Basic and diluted net loss per ordinary share, Class B ​ $ (0.13) ​ $ 0.06 ​ $ (0.07) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Statement of Cash Flows for the three months ended March 31, 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ Supplemental disclosure of non-cash investing and financing activities: ​ ​ ​ ​ ​ ​ ​ ​ ​ Change in value of Class A ordinary shares subject to redemption ​ $ 9,810,764 ​ $ (9,810,764) ​ $ — ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Statement of Cash Flows for the six months ended June 30, 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ Supplemental disclosure of non-cash investing and financing activities: ​ ​ ​ ​ ​ ​ ​ ​ ​ Change in value of Class A ordinary shares subject to redemption ​ $ (4,897,138) ​ $ 4,897,138 ​ $ — ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Statement of Cash Flows for the nine months ended September 30, 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ Cash Flows from Operating Activities: ​ ​ ​ ​ ​ ​ ​ ​ ​ Net Loss ​ $ (5,056,122) ​ $ 2,334,252 ​ $ (2,721,870) Changes in operating assets and liabilities ​ ​ ​ ​ ​ ​ ​ ​ ​ Accrued expenses ​ $ 5,097,013 ​ $ (2,334,252) ​ $ 2,762,761 ​

Summary of Significant Accounti

Summary of Significant Accounting Policies	8 Months Ended	9 Months Ended
	Dec. 31, 2020	Sep. 30, 2021
CIK0001815805 BROADSTONE ACQUISITION CORP.
Summary of Significant Accounting Policies	Note 3—Summary of Significant Accounting Policies Use of Estimates The preparation of financial statements in conformity with U.S. GAAP requires the Company’s management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements. Making estimates requires management to exercise significant judgment. It is at least reasonably possible that the estimate of the effect of a condition, situation or set of circumstances that existed at the date of the financial statements, which management considered in formulating its estimate, could change in the near term due to one or more future confirming events. Accordingly, the actual results could differ significantly from those estimates. Cash and Cash Equivalents The Company considers all short-term investments with an original maturity of three months or less when purchased to be cash equivalents. The Company had $305,311,303 in cash equivalents held in the Trust Account as of December 31, 2020. Investments Held in Trust Account The Company’s portfolio of investments held in trust is comprised solely of U.S. government securities, within the meaning set forth in Section 2(a)(16) of the Investment Company Act, with a maturity of 185 days or less, or investments in money market funds that invest in U.S. government securities, or a combination thereof. The Company’s investments held in the Trust Account are classified as trading securities. Trading securities are presented on the balance sheet at fair value at the end of each reporting period. Gains and losses resulting from the change in fair value of these investments are included in income earned on investments in Trust Account in the accompanying statement of operations. The estimated fair values of investments held in the Trust Account are determined using available market information, other than for investments in open-ended money market funds with published daily net asset values (“NAV”), in which case the Company uses NAV as a practical expedient to fair value. The NAV on these investments is typically held constant at $1.00 per unit. Concentration of Credit Risk Financial instruments that potentially subject the Company to concentrations of credit risk consist of cash accounts in a financial institution, which, at times, may exceed the Federal Depository Insurance Coverage of $250,000, and investments held in Trust Account. At December 31, 2020, the Company has not experienced losses on these accounts and management believes the Company is not exposed to significant risks on such accounts. Fair Value Fair value is defined as the price that would be received for sale of an asset or paid for transfer of a liability, in an orderly transaction between market participants at the measurement date. U.S. GAAP establishes a three-tier fair value hierarchy, which prioritizes the inputs used in measuring fair value. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to unobservable inputs (Level 3 measurements). These tiers include: ● Level 1, defined as observable inputs such as quoted prices for identical instruments in active markets; ● Level 2, defined as inputs other than quoted prices in active markets that are either directly or indirectly observable such as quoted prices for similar instruments in active markets or quoted prices for identical or similar instruments in markets that are not active; and ● Level 3, defined as unobservable inputs in which little or no market data exists, therefore requiring an entity to develop its own assumptions, such as valuations derived from valuation techniques in which one or more significant inputs or significant value drivers are unobservable. In some circumstances, the inputs used to measure fair value might be categorized within different levels of the fair value hierarchy. In those instances, the fair value measurement is categorized in its entirety in the fair value hierarchy based on the lowest level input that is significant to the fair value measurement. Fair Value of Financial Instruments As of December 31, 2020, the carrying values of cash, accounts payable and accrued expenses approximate their fair values due to the short-term nature of the instruments. As of December 31, 2020, the Company’s portfolio of investments held in the Trust Account is comprised entirely of investments in money market funds that invest in U.S. government securities. The Company uses NAV as a practical expedient to fair value for its investments in money market funds with published NAV. Offering Costs Associated with the Initial Public Offering The Company complies with the requirements of the ASC 340-10-S99-1 and SEC Staff Accounting Bulletin ("SAB") Topic 5A - "Expenses of Offering". Offering costs consist principally of professional and registration fees incurred through the balance sheet date that are related to the IPO and were charged to shareholders’ equity upon the completion of the IPO. Offering costs amounted to $16,935,162, of which $16,173,600 were charged to temporary equity upon the completion of the Initial Public Offering and $677,570 were charged as general and administrative expenses to the statement of operations. Warrant Liabilities The Company evaluated the Public Warrants and Private Placement Warrants (collectively, “Warrants”, which are discussed in Note 4, Note 7, Note 8 and Note 9) in accordance with ASC 815-40, “Derivatives and Hedging — Contracts in Entity’s Own Equity”, and concluded that a provision in the Warrant Agreement related to certain tender or exchange offers precludes the Warrants from being accounted for as components of equity. As the Warrants meet the definition of a derivative as contemplated in ASC 815, the Warrants are recorded as derivative liabilities on the Balance Sheet and measured at fair value at inception (on the date of the IPO) and at each reporting date in accordance with ASC 820, “Fair Value Measurement”, with changes in fair value recognized in the Statement of Operations in the period of change. Class A Ordinary Shares Subject to Possible Redemption The Company accounts for its Class A ordinary shares subject to possible redemption in accordance with the guidance in FASB ASC Topic 480 “Distinguishing Liabilities from Equity.” Class A ordinary shares subject to mandatory redemption (if any) are classified as liability instruments and are measured at fair value. Conditionally redeemable Class A ordinary shares (including Class A ordinary shares that feature redemption rights that are either within the control of the holder or subject to redemption upon the occurrence of uncertain events not solely within the Company’s control) are classified as temporary equity. At all other times, Class A ordinary shares are classified as shareholders’ equity. The Company’s Class A ordinary shares feature certain redemption rights that are considered to be outside of the Company’s control and subject to the occurrence of uncertain future events. Accordingly, as of December 31, 2020, 26,508,694 Class A ordinary shares subject to possible redemption are presented as temporary equity, outside of the shareholders’ equity section of the Company’s balance sheet. Components of Equity Upon the IPO, the Company issued Class A ordinary shares and Warrants. The Company allocated the proceeds received from the issuance using the with-and-without method. Under that method, the Company first allocated the proceeds to the Public Warrants based on their initial fair value measurement of $11,955,000 and then allocated the remaining proceeds, net of underwriting discounts and offering costs of $16,935,163, to the Class A ordinary shares. All of the 30,530,301 Class A ordinary shares are presented within temporary equity, as shares are subject to redemption upon the occurrence of events not solely within the Company’s control. Similarly, the Company first allocated the proceeds of the Private Placement Warrants based on their initial fair value measurement of $6,368,000 and then allocated the remaining proceeds of $1,654,167 to the Class A ordinary shares. ​ Net Loss Per Ordinary Share The Company complies with accounting and disclosure requirements of FASB ASC Topic 260, “Earnings Per Share.” The Company has two classes of shares, which are referred to as Class A ordinary shares and Class B ordinary shares. Income and losses are shared pro rata between the two classes of shares. Net loss per ordinary share is calculated by dividing the net income (loss) by the weighted average of ordinary shares outstanding for the respective period. The Company did not consider the effect of the warrants issued in connection with the Initial Public Offering and the Private Placement to purchase an aggregate of 23,371,211 shares of ordinary shares in the calculation of diluted loss per share because their exercise is contingent upon future events and since their inclusion would be anti-dilutive under the treasury stock method. Accretion associated with the redeemable Class A ordinary shares is excluded from earnings per share as the redemption value approximates fair value. The following table reflects presents a reconciliation of the numerator and denominator used to compute basic and diluted net loss per share for each class of ordinary shares: ​ ​ ​ ​ ​ ​ ​ ​ ​ For the period ​ ​ From May 13, 2020 ​ ​ (inception) through ​ ​ December 31, 2020 ​ ​ Class A ​ Class B Basic and diluted net loss per ordinary share ​ ​ ​ ​ ​ ​ Numerator: ​ ​ ​ ​ ​ ​ Allocation of net loss, as adjusted ​ $ (5,596,126) ​ $ (3,170,401) Denominator: ​ ​ ​ ​ ​ ​ Basic and diluted weighted average shares outstanding ​ ​ 14,320,851 ​ ​ 8,113,263 Basic and diluted net loss per ordinary share ​ $ (0.39) ​ $ (0.39) ​ Income Taxes The Company follows the asset and liability method of accounting for income taxes under FASB ASC Topic 740, “ Income Taxes FASB ASC Topic 740 prescribes a recognition threshold and a measurement attribute for the financial statement recognition and measurement of tax positions taken or expected to be taken in a tax return. For those benefits to be recognized, a tax position must be more likely than not to be sustained upon examination by taxing authorities. There were no unrecognized tax benefits as of December 31, 2020. The Company’s management determined that the Cayman Islands is the Company’s only major tax jurisdiction. The Company recognizes accrued interest and penalties related to unrecognized tax benefits as income tax expense. There were no unrecognized tax benefits and no amounts were accrued for interest and penalties for the period from May 13, 2020 (inception) through December 31, 2020. The Company is currently not aware of any issues under review that could result in significant payments, accruals or material deviation from its position. The Company may be subject to potential examination by U.S. federal, U.S. state or foreign taxing authorities in the area of income taxes. These potential examinations may include questioning the timing and amount of deductions, the nexus of income among various tax jurisdictions and compliance with U.S. federal, U.S. state and foreign tax laws. There is currently no taxation imposed on income by the Government of the Cayman Islands. In accordance with Cayman federal income tax regulations, income taxes are not levied on the Company. Consequently, deferred tax assets and income taxes are not reflected in the Company’s financial statements. The Company’s management does not expect that the total amount of unrecognized tax benefits will materially change over the next twelve months. Recent Accounting Standards Management does not believe that any recently issued, but not yet effective, accounting standards if currently adopted would have a material effect on the Company’s financial statements.	Note 3—Summary of Significant Accounting Policies Use of Estimates The preparation of financial statements in conformity with GAAP requires the Company’s management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements. Making estimates requires management to exercise significant judgment. It is at least reasonably possible that the estimate of the effect of a condition, situation or set of circumstances that existed at the date of the financial statements, which management considered in formulating its estimate, could change in the near term due to one or more future confirming events. Accordingly, the actual results could differ significantly from those estimates. One of the more significant accounting estimates included in these financial statements is the determination of the fair value of the warrant liabilities. Cash and Cash Equivalents The Company considers all short-term investments with an original maturity of three months or less when purchased to be cash equivalents. The Company had $305,332,346 and $305,311,303 in cash equivalents held in the Trust Account as of September 30, 2021 and December 31, 2020, respectively. Investments Held in Trust Account The Company’s portfolio of investments held in trust is comprised solely of U.S. government securities, within the meaning set forth in Section 2(a)(16) of the Investment Company Act, with a maturity of 185 days or less, or investments in money market funds that invest in U.S. government securities, or a combination thereof. The Company’s investments held in the Trust Account are classified as trading securities. Trading securities are presented on the balance sheet at fair value at the end of each reporting period. Gains and losses resulting from the change in fair value of these investments are included in income earned on investments held in the Trust Account in the accompanying statement of operations. The estimated fair values of investments held in the Trust Account are determined using available market information, other than for investments in open-ended money market funds with published daily net asset values (“NAV”), in which case the Company uses NAV as a practical expedient to fair value. The NAV on these investments is typically held constant at $1.00 per unit. Concentration of Credit Risk Financial instruments that potentially subject the Company to concentrations of credit risk consist of cash accounts in a financial institution, which, at times, may exceed the Federal Deposit Insurance Company coverage of $250,000, and investments held in Trust Account. At September 30, 2021, the Company has not experienced losses on these accounts and management believes the Company is not exposed to significant risks on such accounts. Fair Value Fair value is defined as the price that would be received for sale of an asset or paid for transfer of a liability, in an orderly transaction between market participants at the measurement date. GAAP establishes a three-tier fair value hierarchy, which prioritizes the inputs used in measuring fair value. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to unobservable inputs (Level 3 measurements). These tiers include: ● Level 1, defined as observable inputs such as quoted prices for identical instruments in active markets; ● Level 2, defined as inputs other than quoted prices in active markets that are either directly or indirectly observable such as quoted prices for similar instruments in active markets or quoted prices for identical or similar instruments in markets that are not active; and ● Level 3, defined as unobservable inputs in which little or no market data exists, therefore requiring an entity to develop its own assumptions, such as valuations derived from valuation techniques in which one or more significant inputs or significant value drivers are unobservable. In some circumstances, the inputs used to measure fair value might be categorized within different levels of the fair value hierarchy. In those instances, the fair value measurement is categorized in its entirety in the fair value hierarchy based on the lowest level input that is significant to the fair value measurement. Fair Value of Financial Instruments As of September 30, 2021, and December 31, 2020, the carrying values of cash, accounts payable and accrued expenses approximate their fair values due to the short-term nature of the instruments. As of September 30, 2021, the Company’s portfolio of investments held in the Trust Account is comprised entirely of investments in money market funds that invest in U.S. government securities. The Company uses NAV as a practical expedient to fair value for its investments in money market funds with published NAV. Offering Costs Offering costs consisted of legal, accounting and other expenses incurred through the Initial Public Offering that were directly related to the Initial Public Offering. Offering costs were allocated to the separable financial instruments issued in the Initial Public Offering based on a relative fair value basis, compared to total proceeds received. Offering costs allocated to warrant liabilities were expensed as incurred in the statements of operations. Offering costs associated with the Class A ordinary shares issued were initially charged to temporary equity and then accreted to ordinary shares subject to redemption upon the completion of the Initial Public Offering. Warrant Liabilities The Company evaluated the Public Warrants and Private Placement Warrants (collectively, “Warrants”, which are discussed in Note 3, Note 6, Note 7 and Note 8) in accordance with ASC 815-40, “Derivatives and Hedging — Contracts in Entity’s Own Equity”, and concluded that a provision in the Warrant Agreement related to certain tender or exchange offers precludes the Warrants from being accounted for as components of equity. As the Warrants meet the definition of a derivative as contemplated in ASC 815, the Warrants are recorded as derivative liabilities on the Balance Sheet and measured at fair value at inception (on the date of the IPO) and at each reporting date in accordance with ASC 820, “Fair Value Measurement”, with changes in fair value recognized in the Statement of Operations in the period of change. Class A Ordinary Shares Subject to Possible Redemption The Company accounts for its Class A ordinary shares subject to possible redemption in accordance with the guidance in FASB ASC Topic 480 “Distinguishing Liabilities from Equity.” Class A ordinary shares subject to mandatory redemption (if any) are classified as liability instruments and are measured at fair value. Conditionally redeemable Class A ordinary shares (including Class A ordinary shares that feature redemption rights that are either within the control of the holder or subject to redemption upon the occurrence of uncertain events not solely within the Company’s control) are classified as temporary equity. At all other times, Class A ordinary shares are classified as shareholders’ equity. The Company’s Class A ordinary shares feature certain redemption rights that are considered to be outside of the Company’s control and subject to the occurrence of uncertain future events. Accordingly, as of September 30, 2021 and December 31, 2020, 30,530,301 Class A ordinary shares subject to possible redemption are presented as temporary equity, outside of the shareholders’ equity section of the Company’s balance sheet. Net Income (Loss) Per Ordinary Share Net income (loss) per share is computed by dividing net (loss) income by the weighted-average number of ordinary shares outstanding during the periods. The Company has not considered the effect of the warrants sold in the Initial Public Offering and the Private Placement to purchase an aggregate of 23,371,211, of the Company’s Class A ordinary shares in the calculation of diluted income (loss) per share, since their inclusion would be anti-dilutive under the treasury stock method. In connection with the change in presentation for the Class A ordinary shares subject to redemption, the Company also revised its earnings per share calculations to allocate net income/loss evenly to Class A and Class B ordinary shares. This presentation contemplates a Business Combination as the most likely outcome, in which case, both classes of stock share pro rata in the income/loss of the Company. The contractual formula utilized to calculate the redemption amount approximates fair value. The Class feature to redeem at fair value means that there is effectively only one class of stock. Changes in fair value are not considered a dividend for the purposes of the numerator in the earnings per share calculation. The calculation of diluted income per ordinary stock does not consider the effect of the warrants issued in connection with the IPO since the exercise of the warrants are contingent upon the occurrence of future events and the inclusion of such warrants would be anti-dilutive. The following table reflects the calculation of basic and diluted net income per ordinary share: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ For the three months ​ For the nine months ended ​ ​ ended September 30, 2021 ​ September 30, 2021 ​ Class A Class B Class A Class B Basic and diluted net loss per ordinary share ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Numerator: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Allocation of net income (loss), as adjusted ​ $ 1,757,014 ​ $ 439,254 ​ $ (2,177,496) ​ $ (544,374) Denominator: ​ ​ ​ ​ ​ ​ ​ ​ ​ Basic and diluted weighted average shares outstanding ​ ​ 30,530,301 ​ 7,632,575 ​ 30,530,301 ​ 7,632,575 Basic and diluted net income (loss), per ordinary share ​ $ 0.06 ​ $ 0.06 ​ $ (0.07) ​ $ (0.07) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ For the period ​ ​ ​ ​ ​ ​ ​ ​ from May 13, 2020 ​ ​ For the three months ​ (inception) through ​ ​ ended September 30, 2020 ​ September 30, 2020 ​ Class A Class B Class A Class B Basic and diluted net loss per ordinary share ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Numerator: ​ ​ ​ ​ ​ ​ ​ Allocation of net loss, as adjusted ​ $ (246,740) ​ $ (407,892) $ (194,223) ​ $ (471,141) Denominator: ​ ​ Basic and diluted weighted average shares outstanding ​ 5,217,391 ​ 8,625,000 3,404,255 8,255,357 Basic and diluted net loss per ordinary share ​ $ (0.05) ​ $ (0.05) $ (0.06) ​ $ (0.06) ​ Income Taxes The Company follows the asset and liability method of accounting for income taxes under FASB ASC Topic 740, “ Income Taxes FASB ASC Topic 740 prescribes a recognition threshold and a measurement attribute for the financial statement recognition and measurement of tax positions taken or expected to be taken in a tax return. For those benefits to be recognized, a tax position must be more likely than not to be sustained upon examination by taxing authorities. There were no unrecognized tax benefits as of September 30, 2021 and December 31, 2020. The Company’s management determined that the Cayman Islands is the Company’s only major tax jurisdiction. The Company recognizes accrued interest and penalties related to unrecognized tax benefits as income tax expense. There were no unrecognized tax benefits and no amounts were accrued for interest and penalties for the three months and nine months ended September 30, 2021. The Company is currently not aware of any issues under review that could result in significant payments, accruals or material deviation from its position. The Company may be subject to potential examination by U.S. federal, U.S. state or foreign taxing authorities in the area of income taxes. These potential examinations may include questioning the timing and amount of deductions, the nexus of income among various tax jurisdictions and compliance with U.S. federal, U.S. state and foreign tax laws. There is currently no taxation imposed on income by the Government of the Cayman Islands. In accordance with Cayman federal income tax regulations, income taxes are not levied on the Company. Consequently, deferred tax assets and income taxes are not reflected in the Company’s financial statements. The Company’s management does not expect that the total amount of unrecognized tax benefits will materially change over the next twelve months. Recent Accounting Standards In August 2020, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2020-06, Debt — Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging — Contracts in Entity’s Own Equity (Subtopic 815-40) (“ASU 2020-06”) to simplify accounting for certain financial instruments. ASU 2020-06 eliminates the current models that require separation of beneficial conversion and cash conversion features from convertible instruments and simplifies the derivative scope exception guidance pertaining to equity classification of contracts in an entity’s own equity. The new standard also introduces additional disclosures for convertible debt and freestanding instruments that are indexed to and settled in an entity’s own equity. ASU 2020-06 amends the diluted earnings per share guidance, including the requirement to use the if-converted method for all convertible instruments. ASU 2020-06 is effective January 1, 2022 and should be applied on a full or modified retrospective basis, with early adoption permitted beginning on January 1, 2021. The Company is currently assessing the impact, if any, that ASU 2020-06 would have on the financial position, results of operations or cash flows. Management does not believe that any other recently issued, but not yet effective, accounting standards, if currently adopted, would have a material effect on our condensed financial statements.

Initial Public Offering

Initial Public Offering	8 Months Ended	9 Months Ended
	Dec. 31, 2020	Sep. 30, 2021
CIK0001815805 BROADSTONE ACQUISITION CORP.
Initial Public Offering	Note 4—Initial Public Offering On September 15, 2020, the Company consummated the Initial Public Offering of 30,000,000 Units, at $10.00 per Unit, generating gross proceeds of $300.0 million, and incurring offering costs of approximately $16.6 million, inclusive of approximately $10.5 million in deferred underwriting commissions. On October 14, 2020, the Company completed the sale of the Over-Allotment Units to the underwriters, generating gross proceeds of approximately $5.3 million, and incurred additional offering costs of approximately $292,000 in underwriting fees (inclusive of approximately $186,000 in deferred underwriting commissions). Each Unit consists of one Class A ordinary share, par value $0.0001 per share, and one-half of one redeemable warrant (each, a “Public Warrant”). Each whole Public Warrant entitles the holder to purchase one Class A ordinary share at a price of $11.50 per share, subject to adjustment (see Note 6).	Note 4—Initial Public Offering On September 15, 2020, the Company consummated the Initial Public Offering of 30,000,000 Units, at $10.00 per Unit, generating gross proceeds of $300.0 million, and incurring offering costs of approximately $16.6 million, inclusive of approximately $10.5 million in deferred underwriting commissions. On October 14, 2020, the Company completed the sale of the Over-Allotment Units to the underwriters, generating gross proceeds of approximately $5.3 million, and incurred additional offering costs of approximately $292,000 in underwriting fees (inclusive of approximately $186,000 in deferred underwriting commissions). Each Unit consists of one Class A ordinary share, par value $0.0001 per share, and one-half

Related Party Transactions_2

Related Party Transactions	8 Months Ended	9 Months Ended
	Dec. 31, 2020	Sep. 30, 2021
CIK0001815805 BROADSTONE ACQUISITION CORP.
Related Party Transactions	Note 5—Related Party Transactions Founder Shares On May 19, 2020, the Sponsor paid $25,000, or approximately $0.003 per share, to cover certain offering costs of the Company in consideration for 8,625,000 Class B ordinary shares, par value $0.0001 per share (the “Founder Shares”). Up to 1,125,000 Founder Shares were subject to forfeiture to the extent that the over-allotment option was not exercised in full by the underwriters, so that the Founder Shares will represent 20.0% of the Company’s issued and outstanding shares after the Initial Public Offering. On October 14, 2020, the underwriters partially exercised the Unit Over-Allotment Option to purchase an additional 530,301 Units. The remaining over-allotment option expired unexercised on October 25, 2020; thus, the Company forfeited 992,425 Class B ordinary shares. The initial shareholders agreed, subject to limited exceptions, not to transfer, assign or sell any of their Founder Shares until the earlier to occur of (i) one year after the completion of the initial Business Combination or (ii) the date following the completion of the initial Business Combination on which the Company completes a liquidation, merger, share exchange or other similar transaction that results in all of the shareholders having the right to exchange their ordinary shares for cash, securities or other property. Notwithstanding the foregoing, if the closing price of the Class A ordinary shares equals or exceeds $12.00 per share (as adjusted for share sub-divisions, share capitalizations, reorganizations, recapitalizations and the like) for any 20 trading days within any 30-trading day period commencing at least 150 days after the initial Business Combination, the Founder Shares will be released from the lockup. Private Placement Warrants Simultaneously with the closing of the Initial Public Offering, the Company consummated the Private Placement of 8,000,000 Private Placement Warrants to the Sponsor, each exercisable to purchase one Class A ordinary share at $11.50 per share, at a price of $1.00 per Private Placement Warrant, generating gross proceeds to the Company of approximately $8.0 million. Simultaneously with the closing of the Over-Allotment Units, on October 14, 2020, the Company consummated the second closing of the Private Placement, resulting in the purchase of an aggregate of an additional 106,060 Private Placement Warrants by the Sponsor, generating gross proceeds to the Company of approximately $106,060. Each warrant is exercisable to purchase one Class A ordinary share at $11.50 per share. A portion of the proceeds from the Private Placement Warrants was added to the proceeds from the Initial Public Offering held in the Trust Account. If the Company does not complete a Business Combination within the Combination Period, the Private Placement Warrants will expire worthless. The Sponsor and the Company’s officers and directors agreed, subject to limited exceptions, not to transfer, assign or sell any of their Private Placement Warrants until 30 days Sponsor Loan On May 19, 2020, the Sponsor agreed to loan the Company up to $300,000 to cover expenses related to the Initial Public Offering pursuant to a promissory note (the “Note”). This loan is non-interest bearing and payable upon the completion of the Initial Public Offering. The Company borrowed approximately $133,000 under the Note. The Company fully repaid this balance on September 15, 2020. Working Capital Loans In addition, in order to finance transaction costs in connection with a Business Combination, the Sponsor or an affiliate of the Sponsor, or certain of the Company’s officers and directors, may, but are not obligated to, loan the Company funds as may be required (“Working Capital Loans”). If the Company completes a Business Combination, the Company will repay the Working Capital Loans. In the event that a Business Combination does not close, the Company may use a portion of proceeds held outside the Trust Account to repay the Working Capital Loans but no proceeds held in the Trust Account would be used to repay the Working Capital Loans. Except for the foregoing, the terms of such Working Capital Loans, if any, have not been determined and no written agreements exist with respect to such loans. The Working Capital Loans would either be repaid upon consummation of a Business Combination, without interest, or, at the lender’s discretion, up to $1.5 million of such Working Capital Loans may be convertible into private placement warrants at a price of $1.00 per warrant. To-date, the Company has no borrowings under any Working Capital Loans. Administrative Support Agreement Commencing on the date the Company’s securities are first listed on the New York Stock Exchange, the Company agreed to pay the Sponsor a total of $10,000 per month for office space, utilities, secretarial and administrative support services provided to members of the Company’s management team. Upon completion of the initial Business Combination or the Company’s liquidation, the Company will cease paying these monthly fees. The Company recognized $37,000 in connection with such services for the period from May 13, 2020 (inception) through December 31, 2020 in general and administrative expenses in the accompanying statement of operations.	Note 5—Related Party Transactions Founder Shares On May 19, 2020, the Sponsor paid $25,000, or approximately $0.003 per share, to cover certain offering costs of the Company in consideration for 8,625,000 Class B ordinary shares, par value $0.0001 per share (the “Founder Shares”). Up to 1,125,000 Founder Shares were subject to forfeiture to the extent that the over-allotment option was not exercised in full by the underwriters, so that the Founder Shares will represent 20.0% of the Company’s issued and outstanding shares after the Initial Public Offering. On October 14, 2020, the underwriters partially exercised the Unit Over-Allotment Option to purchase an additional 530,301 Units. The remaining over-allotment option expired unexercised on October 25, 2020; thus, the Company forfeited 992,425 Class B ordinary shares. The initial shareholders agreed, subject to limited exceptions, not to transfer, assign or sell any of their Founder Shares until the earlier to occur of (i) one year after the completion of the initial Business Combination or (ii) the date following the completion of the initial Business Combination on which the Company completes a liquidation, merger, share exchange or other similar transaction that results in all of the shareholders having the right to exchange their ordinary shares for cash, securities or other property. Notwithstanding the foregoing, if the closing price of the Class A ordinary shares equals or exceeds $12.00 per share (as adjusted for share sub-divisions, share capitalizations, reorganizations, recapitalizations and the like) for any 20 trading days within any 30-trading day period commencing at least 150 days after the initial Business Combination, the Founder Shares will be released from the lockup. Private Placement Warrants Simultaneously with the closing of the Initial Public Offering, the Company consummated the Private Placement of 8,000,000 Private Placement Warrants to the Sponsor, each exercisable to purchase one Class A ordinary share at $11.50 per share, at a price of $1.00 per Private Placement Warrant, generating gross proceeds to the Company of approximately $8.0 million. Simultaneously with the closing of the Over-Allotment Units, on October 14, 2020, the Company consummated the second closing of the Private Placement, resulting in the purchase of an aggregate of an additional 106,060 Private Placement Warrants by the Sponsor, generating gross proceeds to the Company of approximately $106,060. Each warrant is exercisable to purchase one Class A ordinary share at $11.50 per share. A portion of the proceeds from the Private Placement Warrants was added to the proceeds from the Initial Public Offering held in the Trust Account. If the Company does not complete a Business Combination within the Combination Period, the Private Placement Warrants will expire worthless. The Sponsor and the Company’s officers and directors agreed, subject to limited exceptions, not to transfer, assign or sell any of their Private Placement Warrants until 30 days after the completion of the initial Business Combination. Sponsor Loan On May 19, 2020, the Sponsor agreed to loan the Company up to $300,000 to cover expenses related to the Initial Public Offering pursuant to a promissory note (the “Note”). This loan is non-interest bearing and payable upon the completion of the Initial Public Offering. The Company borrowed approximately $133,000 under the Note. The Company fully repaid this balance on September 15, 2020. As of September 30, 2021, and December 31, 2020, there were no amounts outstanding on the Note and the facility is no longer available to the Company. Working Capital Loans In addition, in order to finance transaction costs in connection with a Business Combination, the Sponsor or an affiliate of the Sponsor, or certain of the Company’s officers and directors, may, but are not obligated to, loan the Company funds as may be required (“Working Capital Loans”). If the Company completes a Business Combination, the Company will repay the Working Capital Loans. In the event that a Business Combination does not close, the Company may use a portion of proceeds held outside the Trust Account to repay the Working Capital Loans but no proceeds held in the Trust Account would be used to repay the Working Capital Loans. Except for the foregoing, the terms of such Working Capital Loans, if any, have not been determined and no written agreements exist with respect to such loans. The Working Capital Loans would either be repaid upon consummation of a Business Combination, without interest, or, at the lender’s discretion, up to $1.5 million of such Working Capital Loans may be convertible into private placement warrants at a price of $1.00 per warrant. To-date, the Company has no borrowings under any Working Capital Loans. Administrative Support Agreement Commencing on the date the Company’s securities were first listed on the New York Stock Exchange, the Company agreed to pay the Sponsor a total of $10,000 per month for office space, utilities, secretarial and administrative support services provided to members of the Company’s management team. Upon completion of the initial Business Combination or the Company’s liquidation, the Company will cease paying these monthly fees. The Company recognized $30,000 and $90,000 in connection with such services for the three months and nine months ended September 30, 2021, respectively, in general and administrative expenses in the accompanying statement of operations. As of September 30, 2021, $30,000 is included in accounts payable in the condensed balance sheet.

Commitments and Contingencies

Commitments and Contingencies	8 Months Ended	9 Months Ended
	Dec. 31, 2020	Sep. 30, 2021
CIK0001815805 BROADSTONE ACQUISITION CORP.
Commitments and Contingencies	Note 6—Commitments and Contingencies Registration Rights The holders of Founder Shares, Private Placement Warrants, and securities that may be issued upon conversion of Working Capital Loans, if any, are entitled to registration rights pursuant to a registration rights agreement. These holders will be entitled to make up to three demands, excluding short form demands, that the Company register such securities. In addition, these holders will have certain “piggy-back” registration rights with respect to registration statements filed subsequent to the completion of the initial Business Combination. The Company will bear the expenses incurred in connection with the filing of any such registration statements. Underwriting Agreement The Company granted the underwriters a 45-day option from the date of the final prospectus relating to the Initial Public Offering to purchase up to 4,500,000 additional Units to cover over-allotments, if any, at the Initial Public Offering price less the underwriting discounts and commissions. On October 14, 2020, the Underwriters partially exercised the over-allotment option to purchase an additional 530,301 Over-Allotment Units. The remaining over-allotment option expired unexercised on October 25, 2020. The underwriters were entitled to an underwriting discount of $0.20 per unit, or $6.0 million and approximately $0.1 million in the aggregate, paid upon the closing of the Initial Public Offering in September 2020 and the Over-Allotment in October 2020, respectively. The underwriters reimbursed $390,000 to the Company to reimburse certain expenses in connection with the Initial Public Offering. In addition, $0.35 per unit, or approximately $10.7 million in the aggregate, will be payable to the underwriters for deferred underwriting commissions. The deferred fee will become payable to the underwriters from the amounts held in the Trust Account solely in the event that the Company completes a Business Combination, subject to the terms of the underwriting agreement.	Note 6—Commitments and Contingencies Registration Rights The holders of Founder Shares, Private Placement Warrants, and securities that may be issued upon conversion of Working Capital Loans, if any, are entitled to registration rights pursuant to a registration rights agreement. These holders will be entitled to make up to three demands, excluding short form demands, that the Company register such securities. In addition, these holders will have certain “piggy-back” registration rights with respect to registration statements filed subsequent to the completion of the initial Business Combination. The Company will bear the expenses incurred in connection with the filing of any such registration statements. Underwriting Agreement The Company granted the underwriters a 45-day option from the date of the final prospectus relating to the Initial Public Offering to purchase up to 4,500,000 additional Units to cover over-allotments, if any, at the Initial Public Offering price less the underwriting discounts and commissions. On October 14, 2020, the Underwriters partially exercised the over-allotment option to purchase an additional 530,301 Over-Allotment Units. The remaining over-allotment option expired unexercised on October 25, 2020. The underwriters were entitled to an underwriting discount of $0.20 per unit, or $6.0 million and approximately $0.1 million in the aggregate, paid upon the closing of the Initial Public Offering in September 2020 and the Over-Allotment in October 2020, respectively. The underwriters reimbursed $390,000 to the Company to reimburse certain expenses in connection with the Initial Public Offering. In addition, $0.35 per unit, or approximately $10.7 million in the aggregate, will be payable to the underwriters for deferred underwriting commissions. The deferred fee will become payable to the underwriters from the amounts held in the Trust Account solely in the event that the Company completes a Business Combination, subject to the terms of the underwriting agreement. Business Combination Agreement On June 10, 2021, the Company, Broadstone Sponsor LLP, Vertical Aerospace Ltd., a Cayman Islands exempted company with limited liability (“Pubco”), Vertical Merger Sub Ltd., a Cayman Islands exempted company with limited liability and a wholly owned subsidiary of Pubco (“Merger Sub”), Vertical Aerospace Group Ltd., a private limited company incorporated in England and Wales (“Vertical”), Vincent Casey, solely in his capacity as the representative of the shareholders of Vertical and the shareholders of the Vertical thereto (the “Vertical Shareholders”) entered into a Business Combination Agreement (the “Business Combination Agreement”), which, among other things, provides for (a) the merger of the Company with Merger Sub (the “Merger”), with the Company surviving the Merger and the shareholders of the Company becoming shareholders of Pubco, which will become a new public company, and (b) upon the effectiveness of such Merger, the exchange of 100% of the outstanding ordinary shares of Vertical by the Vertical Shareholders for ordinary shares of Pubco. Pubco is a newly formed entity that was formed for the sole purpose of entering into and consummating the transactions set forth in the Business Combination Agreement. The Business Combination Agreement contains customary representations, warranties and covenants by the parties thereto and the closing is subject to certain conditions as further described in the Business Combination Agreement. In connection with the foregoing and concurrently with the execution of the Business Combination Agreement, Pubco and Broadstone entered into subscription agreements (the “Subscription Agreements”) with certain investors (the “PIPE Investors”) pursuant to which the PIPE Investors agreed to subscribe for and purchase, and Pubco agreed to issue and sell to such PIPE Investors, an aggregate of 9,400,000 ordinary shares, par value $0.0001 per share, of Pubco (the “Pubco Ordinary Shares”), at $10.00 per share for gross proceeds of $94,000,000 (the “PIPE Financing”) on the date of closing of the Business Combination. The Pubco Ordinary Shares to be issued under the Subscription Agreements are being issued in private placement transactions pursuant to an exemption from registration requirements of the Securities Act and have not been, and will not be, registered under the U.S. Securities Act of 1933, as amended. Pubco will grant the PIPE Investors certain registration rights in connection with the PIPE Financing. The PIPE Financing is contingent upon, among other things, the closing of the Business Combination. In addition, Pubco entered into a subscription agreement dated October 26, 2021 (the “Convertible Senior Secured Notes Subscription Agreement”) with a certain third-party investor (the “Convertible Senior Secured Notes Investor”), pursuant to which such investor has agreed to purchase $200 million aggregate principal amount of convertible senior secured notes, which will bear interest at a rate of 7.00% per annum for cash interest or 9.00% per annum paid-in-kind, selected at the option of the Company, will be paid semi-annually and will be convertible for Pubco ordinary shares (the “Convertible Senior Secured Notes”). In connection with the execution of the Convertible Senior Secured Notes Subscription Agreement, Pubco agreed to issue 4,000,000 warrants which will be exercisable for one Pubco Ordinary Share each, with an exercise price of $11.50 per Pubco Ordinary Share. (the “Convertible Notes Warrants”), to the Convertible Senior Secured Notes Investor immediately after Closing. The offering of the Convertible Senior Secured Notes and Convertible Notes Warrants is conditioned upon and expected to close concurrently with the closing of the Business Combination.

Shareholders' Equity

Shareholders' Equity	8 Months Ended	9 Months Ended
	Dec. 31, 2020	Sep. 30, 2021
CIK0001815805 BROADSTONE ACQUISITION CORP.
Shareholders' Equity	Note 7—Shareholders’ Equity Preference Shares The Company is authorized to issue 1,000,000 preference shares with a par value of $0.0001 per share and with such designations, voting and other rights and preferences as may be determined from time to time by the Company’s board of directors. As of December 31, 2020, there were no preference shares issued or outstanding Class A Ordinary Shares The Company is authorized to issue 200,000,000 Class A ordinary shares with a par value of $0.0001 per share. As of December 31, 2020, there were 30,530,301 Class A ordinary shares issued and outstanding, including 26,508,694 Class A ordinary shares subject to possible redemption. Class B Ordinary Shares The Company is authorized to issue 20,000,000 Class B ordinary shares with a par value of $0.0001 per share. Holders are entitled to one vote for each Class B ordinary share. As of December 31, 2020, there were 7,632,575 Class B ordinary shares issued and outstanding Holders of the Class A ordinary shares and holders of the Class B ordinary shares will vote together as a single class on all matters submitted to a vote of the Company’s shareholders, except as required by law or stock exchange rule; provided that only holders of the Class B ordinary shares have the right to vote on the appointment of the Company’s directors prior to the initial Business Combination. The Class B ordinary shares will automatically convert into Class A ordinary shares at the time of the initial Business Combination on a one-for-one basis (as adjusted). In the case that additional Class A ordinary shares or equity-linked securities are issued or deemed issued in connection with the initial Business Combination, the number of Class A ordinary shares issuable upon conversion of all Founder Shares will equal, in the aggregate, 20% of the total	Note 7—Shareholders’ Equity Preference Shares The Company is authorized to issue 1,000,000 preference shares with a par value of $0.0001 per share and with such designations, voting and other rights and preferences as may be determined from time to time by the Company’s board of directors. As of September 30, 2021, and December 31, 2020, there were no preference shares issued or outstanding. Class A Ordinary Shares The Company is authorized to issue 200,000,000 Class A ordinary shares with a par value of $0.0001 per share. At September 30, 2021 and December 31, 2020, there were 30,530,301 Class A ordinary shares issued and outstanding, including 30,530,301 Class A ordinary shares subject to possible redemption which have been reflected as temporary equity on the condensed balance sheets. Class B Ordinary Shares The Company is authorized to issue 20,000,000 Class B ordinary shares with a par value of $0.0001 per share. Holders are entitled to one vote for each Class B ordinary share. As of September 30, 2021, and December 31, 2020, there were 7,632,575 Class B ordinary shares issued and outstanding. Holders of the Class A ordinary shares and holders of the Class B ordinary shares will vote together as a single class on all matters submitted to a vote of the Company’s shareholders, except as required by law or stock exchange rule; provided that only holders of the Class B ordinary shares have the right to vote on the appointment of the Company’s directors prior to the initial Business Combination. The Class B ordinary shares will automatically convert into Class A ordinary shares at the time of the initial Business Combination on a one-for-one basis (as adjusted). In the case that additional Class A ordinary shares or equity-linked securities are issued or deemed issued in connection with the initial Business Combination, the number of Class A ordinary shares issuable upon conversion of all Founder Shares will equal, in the aggregate, 20% of the total number of Class A ordinary shares outstanding after such conversion (after giving effect to any redemptions of Class A ordinary shares by Public Shareholders), including the total number of Class A ordinary shares issued, or deemed issued or issuable upon conversion or exercise of any equity-linked securities or rights issued or deemed issued, by the Company in connection with or in relation to the consummation of the initial Business Combination, excluding any Class A ordinary shares or equity-linked securities exercisable for or convertible into Class A ordinary shares issued, or to be issued, to any seller in the initial Business Combination and any Private Placement Warrants issued to the Sponsor, officers or directors upon conversion of Working Capital Loans; provided that such conversion of Founder Shares will never occur on a less than one-for-one basis.

Warrant Liabilities

Warrant Liabilities	8 Months Ended	9 Months Ended
	Dec. 31, 2020	Sep. 30, 2021
CIK0001815805 BROADSTONE ACQUISITION CORP.
Warrant Liabilities	Note 9—Warrant Liabilities The Public Warrants will become exercisable at $11.50 per share on the later of (a) 30 days after the completion of a Business Combination or (b) 12 months from the closing of the Initial Public Offering; provided in each case that the Company has an effective registration statement under the Securities Act covering the Class A ordinary shares issuable upon exercise of the warrants and a current prospectus relating to them is available (or the Company permits holders to exercise their warrants on a cashless basis and such cashless exercise is exempt from registration under the Securities Act). The Company has agreed that as soon as practicable, but in no event later than 15 business days after the closing of the initial Business Combination, the Company will use commercially reasonable efforts to file with the SEC a registration statement covering the Class A ordinary shares issuable upon exercise of the warrants and, following the effective date of the registration statement, the Company will use commercially reasonable efforts to maintain a current prospectus relating to those Class A ordinary shares until the warrants expire or are redeemed, as specified in the warrant agreement. If a registration statement covering the Class A ordinary shares issuable upon exercise of the warrants is not effective by the 60th business day after the closing of the initial Business Combination, warrant holders may, until such time as there is an effective registration statement and during any period when the Company will have failed to maintain an effective registration statement, exercise warrants on a “cashless basis” in accordance with Section 3(a)(9) of the Securities Act or another exemption. Notwithstanding the above, if the Class A ordinary shares are at the time of any exercise of a warrant not listed on a national securities exchange such that they satisfy the definition of a “covered security” under Section 18(b)(1) of the Securities Act, the Company may, at its option, require holders of Public Warrants who exercise their warrants to do so on a “cashless basis” in accordance with Section 3(a)(9) of the Securities Act and, in the event the Company so elects, it will not be required to file or maintain in effect a registration statement, and in the event the Company does not so elect, it will use commercially reasonable efforts to register or qualify the shares under applicable blue sky laws to the extent an exemption is not available. The warrants will expire five years after the completion of a Business Combination or earlier upon redemption or liquidation. The exercise price and number of shares issuable upon exercise of the warrants may be adjusted in certain circumstances including in the event of a share dividend or recapitalization, reorganization, merger or consolidation. In addition, if (x) the Company issues additional Class A ordinary shares or equity-linked securities for capital-raising purposes in connection with the closing of the initial Business Combination at an issue price or effective issue price of less than $9.20 per Class A ordinary share (with such issue price or effective issue price to be determined in good faith by the board of directors and, in the case of any such issuance to the initial shareholders or their affiliates, without taking into account any Founder Shares held by the initial shareholders or such affiliates, as applicable, prior to such issuance) (the “Newly Issued Price”), (y) the aggregate gross proceeds from such issuances represent more than 60% of the total equity proceeds, plus interest thereon, available for the funding of the initial Business Combination on the date of the consummation of the initial Business Combination (net of redemptions), and (z) the volume-weighted average trading price of the Class A ordinary shares during the 10-trading day period starting on the trading day prior to the day on which the Company consummates the initial Business Combination (such price, the “Market Value”) is below $9.20 per share, then the exercise price of the warrants will be adjusted (to the nearest cent) to be equal to 115% of the higher of the Market Value and the Newly Issued Price, the $18.00 per share redemption trigger price described below will be adjusted (to the nearest cent) to be equal to 180% of the higher of the Market Value and the Newly Issued Price, and the $10.00 per share redemption trigger price described below will be adjusted (to the nearest cent) to be equal to the higher of the Market Value and the Newly Issued Price”. The Private Placement Warrants are identical to the Public Warrants underlying the Units sold in the Initial Public Offering, except that the Private Placement Warrants and the ordinary shares issuable upon exercise of the Private Placement Warrants, so long as they are held by the Sponsor or its permitted transferees, (i) will not be redeemable by the Company, (ii) may not (including the Class A ordinary shares issuable upon exercise of these warrants), subject to certain limited exceptions, be transferred, assigned or sold by the holders until 30 days after the completion of the initial Business Combination, (iii) may be exercised by the holders on a cashless basis and (iv) will be entitled to registration rights. If the Private Placement Warrants are held by holders other than the Sponsor or its permitted transferees, the Private Placement Warrants will be redeemable by the Company and exercisable by the holders on the same basis as the Public Warrants. Once the warrants become exercisable, the Company may call the Public Warrants for redemption (except with respect to the Private Placement Warrants): ● in whole and not in part; ● at a price of $0.01 per warrant; ● upon a minimum of 30 days ’ prior written notice of redemption; and ● if, and only if, the last reported sale price (the “closing price”) of the Class A ordinary shares equals or exceeds $18.00 per share (as adjusted) for any 20 trading days within a 30 -trading day period ending on the third trading day prior to the date on which the Company sends the notice of redemption to the warrant holders. In addition, once the warrants become exercisable, the Company may call but is not obligated to the warrants for redemption: ● in whole and not in part; ● at $0.10 per warrant upon a minimum of 30 days ’ prior written notice of redemption provided that holders will be able to exercise their warrants on a cashless basis prior to redemption and receive that number of Class A ordinary shares to be determined by reference to an agreed table based on the redemption date and the “fair market value” of the Class A ordinary shares; ● if, and only if, the closing price of the Class A ordinary shares equals or exceeds $10.00 per share (as adjusted) for any 20 trading days within the 30 -trading day period ending three trading days before the Company sends the notice of redemption to the warrant holders; and ● if the closing price of the Class A ordinary shares for any 20 trading days within a 30 -trading day period ending on the third trading day prior to the date on which the Company sends the notice of redemption to the warrant holders is less than $18.00 per share (as adjusted). The “fair market value” of the Class A ordinary shares for the above purpose shall mean the volume-weighted average price of the Class A ordinary shares during the 10 trading days immediately following the date on which the notice of redemption is sent to the holders of warrants. In no event will the warrants be exercisable in connection with this redemption feature for more than 0.361 Class A ordinary shares per warrant (subject to adjustment). If the Company calls the Public Warrants for redemption, management will have the option to require all holders that wish to exercise the Public Warrants to do so on a “cashless basis,” as described in the warrant agreement. Additionally, in no event will the Company be required to net cash settle any Warrants. If the Company is unable to complete the initial Business Combination within the Combination Period and the Company liquidates the funds held in the Trust Account, holders of warrants will not receive any of such funds with respect to their warrants, nor will they receive any distribution from the Company’s assets held outside of the Trust Account with the respect to such warrants. Accordingly, the warrants may expire worthless.	Note 8—Warrant Liabilities The Public Warrants will become exercisable at $11.50 per share on the later of (a) 30 days after the completion of a Business Combination or (b) 12 months from the closing of the Initial Public Offering; provided in each case that the Company has an effective registration statement under the Securities Act covering the Class A ordinary shares issuable upon exercise of the warrants and a current prospectus relating to them is available (or the Company permits holders to exercise their warrants on a cashless basis and such cashless exercise is exempt from registration under the Securities Act). The Company has agreed that as soon as practicable, but in no event later than 15 business days after the closing of the initial Business Combination, the Company will use commercially reasonable efforts to file with the SEC a registration statement covering the Class A ordinary shares issuable upon exercise of the warrants and, following the effective date of the registration statement, the Company will use commercially reasonable efforts to maintain a current prospectus relating to those Class A ordinary shares until the warrants expire or are redeemed, as specified in the warrant agreement. If a registration statement covering the Class A ordinary shares issuable upon exercise of the warrants is not effective by the 60th business day after the closing of the initial Business Combination, warrant holders may, until such time as there is an effective registration statement and during any period when the Company will have failed to maintain an effective registration statement, exercise warrants on a “cashless basis” in accordance with Section 3(a)(9) of the Securities Act or another exemption. Notwithstanding the above, if the Class A ordinary shares are at the time of any exercise of a warrant not listed on a national securities exchange such that they satisfy the definition of a “covered security” under Section 18(b)(1) of the Securities Act, the Company may, at its option, require holders of Public Warrants who exercise their warrants to do so on a “cashless basis” in accordance with Section 3(a)(9) of the Securities Act and, in the event the Company so elects, it will not be required to file or maintain in effect a registration statement, and in the event the Company does not so elect, it will use commercially reasonable efforts to register or qualify the shares under applicable blue sky laws to the extent an exemption is not available. The warrants will expire five years after the completion of a Business Combination or earlier upon redemption or liquidation. The exercise price and number of shares issuable upon exercise of the warrants may be adjusted in certain circumstances including in the event of a share dividend or recapitalization, reorganization, merger or consolidation. In addition, if (x) the Company issues additional Class A ordinary shares or equity-linked securities for capital-raising purposes in connection with the closing of the initial Business Combination at an issue price or effective issue price of less than $9.20 per Class A ordinary share (with such issue price or effective issue price to be determined in good faith by the board of directors and, in the case of any such issuance to the initial shareholders or their affiliates, without taking into account any Founder Shares held by the initial shareholders or such affiliates, as applicable, prior to such issuance) (the “Newly Issued Price”), (y) the aggregate gross proceeds from such issuances represent more than 60% of the total equity proceeds, plus interest thereon, available for the funding of the initial Business Combination on the date of the consummation of the initial Business Combination (net of redemptions), and (z) the volume-weighted average trading price of the Class A ordinary shares during the 10-trading day period starting on the trading day prior to the day on which the Company consummates the initial Business Combination (such price, the “Market Value”) is below $9.20 per share, then the exercise price of the warrants will be adjusted (to the nearest cent) to be equal to 115% of the higher of the Market Value and the Newly Issued Price, the $18.00 per share redemption trigger price described below will be adjusted (to the nearest cent) to be equal to 180% of the higher of the Market Value and the Newly Issued Price, and the $10.00 per share redemption trigger price described below will be adjusted (to the nearest cent) to be equal to the higher of the Market Value and the Newly Issued Price”. The Private Placement Warrants are identical to the Public Warrants underlying the Units sold in the Initial Public Offering, except that the Private Placement Warrants and the ordinary shares issuable upon exercise of the Private Placement Warrants, so long as they are held by the Sponsor or its permitted transferees, (i) will not be redeemable by the Company, (ii) may not (including the Class A ordinary shares issuable upon exercise of these warrants), subject to certain limited exceptions, be transferred, assigned or sold by the holders until 30 days after the completion of the initial Business Combination, (iii) may be exercised by the holders on a cashless basis and (iv) will be entitled to registration rights. If the Private Placement Warrants are held by holders other than the Sponsor or its permitted transferees, the Private Placement Warrants will be redeemable by the Company and exercisable by the holders on the same basis as the Public Warrants. Once the warrants become exercisable, the Company may call the Public Warrants for redemption (except with respect to the Private Placement Warrants): ● in whole and not in part; ● at a price of $0.01 per warrant; ● upon a minimum of 30 days’ prior written notice of redemption; and ● if, and only if, the last reported sale price (the “closing price”) of the Class A ordinary shares equals or exceeds $18.00 per share (as adjusted) for any 20 trading days within a 30 -trading day period ending on the third trading day prior to the date on which the Company sends the notice of redemption to the warrant holders. In addition, once the warrants become exercisable, the Company may call but is not obligated to the warrants for redemption: ● in whole and not in part; ● at $0.10 per warrant upon a minimum of 30 days’ prior written notice of redemption provided that holders will be able to exercise their warrants on a cashless basis prior to redemption and receive that number of Class A ordinary shares to be determined by reference to an agreed table based on the redemption date and the “fair market value” of the Class A ordinary shares; ● if, and only if, the closing price of the Class A ordinary shares equals or exceeds $10.00 per share (as adjusted) for any 20 trading days within the 30 -trading day period ending three trading days before the Company sends the notice of redemption to the warrant holders; and ● if the closing price of the Class A ordinary shares for any 20 trading days within a 30 -trading day period ending on the third trading day prior to the date on which the Company sends the notice of redemption to the warrant holders is less than $18.00 per share (as adjusted). The “fair market value” of the Class A ordinary shares for the above purpose shall mean the volume-weighted average price of the Class A ordinary shares during the 10 trading days immediately following the date on which the notice of redemption is sent to the holders of warrants. In no event will the warrants be exercisable in connection with this redemption feature for more than 0.361 Class A ordinary shares per warrant (subject to adjustment). If the Company calls the Public Warrants for redemption, management will have the option to require all holders that wish to exercise the Public Warrants to do so on a “cashless basis,” as described in the warrant agreement. Additionally, in no event will the Company be required to net cash settle any Warrants. If the Company is unable to complete the initial Business Combination within the Combination Period and the Company liquidates the funds held in the Trust Account, holders of warrants will not receive any of such funds with respect to their warrants, nor will they receive any distribution from the Company’s assets held outside of the Trust Account with the respect to such warrants. Accordingly, the warrants may expire worthless.

Fair Value Measurements

Fair Value Measurements	8 Months Ended	9 Months Ended
	Dec. 31, 2020	Sep. 30, 2021
CIK0001815805 BROADSTONE ACQUISITION CORP.
Fair Value Measurements	Note 10—Fair Value Measurements The following table presents information about the Company’s assets that are measured at fair value on a recurring basis at December 31, 2020, and indicates the fair value hierarchy of the valuation inputs the Company utilized to determine such fair value: ​ ​ ​ ​ ​ ​ ​ Description Level December 31, 2020 Assets: ​ ​ ​ ​ ​ Marketable securities held in Trust Account (1) 1 ​ $ 305,311,303 Liabilities: ​ ​ ​ ​ ​ Private Placement Warrants (2) 2 ​ 9,078,787 Public Warrants (2) 1 ​ 17,096,969 (1) The fair value of the marketable securities held in Trust account approximates the carrying amount primarily due to their short-term nature. (2) Measured at fair value on a recurring basis. Warrants The Warrants are accounted for as liabilities in accordance with ASC 815-40 and are presented within warrant liabilities on the Balance Sheet. The warrant liabilities are measured at fair value at inception and on a recurring basis, with changes in fair value presented within change in fair value of warrant liabilities in the Statement of Operations. Initial Measurement The Company established the initial fair value for the Warrants on September 15, 2020, the date of the Company’s Initial Public Offering, using a Binomial Lattice based approach for both the Public Warrants and the Private Placement Warrants. Specifically, the Cox-Rubenstein-Ross (“CRR”) methodology of constructing lattice models. The Company allocated the proceeds received from (i) the sale of Units (which is inclusive of one share of Class A ordinary shares and one The key inputs into the Lattice simulation model for the Private Placement Warrants and Public Warrants were as follows at initial measurement: ​ ​ ​ ​ ​ ​ ​ September 15, ​ ​ 2020 ​ ​ (Initial Input ​ Measurement) Risk-free interest rate ​ 0.28 % Expected term (years) ​ 5.19 ​ Expected volatility ​ 16.0 % Exercise price ​ $ 11.50 ​ Fair value of Units ​ $ 9.60 ​ ​ The Company’s use of a Binomial Lattice based approach required the use of subjective assumptions: ● The risk-free interest rate assumption was based on the five-year U.S. Treasury rate, which was commensurate with the contractual term of the Warrants, which expire on the earlier of (i) five years after the completion of the initial business combination and (ii) upon redemption or liquidation. An increase in the risk-free interest rate, in isolation, would result in an increase in the fair value measurement of the warrant liabilities and vice versa. ● The expected term was determined to be slightly over five years , in-line with a typical equity investor assumed holding period ● The expected volatility assumption was based on the implied volatility from a set of comparable publicly-traded warrants as determined based on the size and proximity of business combinations by similar special purpose acquisition companies. An increase in the expected volatility, in isolation, would result in an increase in the fair value measurement of the warrant liabilities and vice versa. ● The fair value of the Units, which each consist of one Class A ordinary share and one -third of one Public Warrant, represents the closing price on the measurement date as observed from the ticker BSN.U. Based on the applied volatility assumption and the expected term to a business combination noted above, the Company determined that the risk-neutral probability of exceeding the $18.00 redemption value by the start of the exercise period for the Warrants resulted in a nominal difference in value between the Public Warrants and Private Placement Warrants across the valuation dates utilized in the Binomial Lattice based approach. Therefore, the resulting valuations for the two classes of Warrants were determined to be approximately the same. On September 15, 2020, the Private Placement Warrants and Public Warrants were determined to be $0.797 and $0.796 per warrant, respectively. The aggregate values were $6.4 million for the Private Placement Warrants and $12.0 million for the Public Warrants. Subsequent Measurement The Warrants are measured at fair value on a recurring basis and were initially measured at fair value as Level 3 financial liabilities using a Binomial Lattice based approach as of the Company’s public offering date. The subsequent measurement of the Public Warrants as of December 31, 2020 are classified as Level 1 due to the use of an observable market quote in an active market under the ticker BSN.WS. As the transfer of Private Placement Warrants to anyone outside of a small group of individuals who are permitted transferees would result in the Private Placement Warrants having substantially the same terms as the Public Warrants, the Company determined that the fair value of each Private Placement Warrant is equivalent to that of each Public Warrant, with an insignificant adjustment for short-term marketability restrictions. As such, the Private Placement Warrants are classified as Level 2. As of December 31, 2020, the aggregate values of the Private Placement Warrants and Public Warrants were $9.1 million and $17.1 million, respectively. The following table presents the changes in the fair value of warrant liabilities: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Private ​ ​ Warrant ​ ​ Placement ​ Public ​ Liabilities Fair value as of May 13, 2020 (inception) ​ $ — ​ $ — ​ $ — Initial measurement on September 15, 2020 ​ 6,368,000 ​ 11,955,000 ​ 18,323,000 Initial measurement on October 14, 2020 ​ ​ 83,893 ​ ​ 209,469 ​ ​ 293,362 Change in valuation inputs or other assumptions (1) ​ 2,626,894 ​ 4,932,500 ​ 7,559,394 Fair value as of December 31, 2020 ​ $ 9,078,787 ​ $ 17,096,969 ​ $ 26,175,756 (1) Changes in valuation inputs or other assumptions are recognized in change in fair value of warrant liabilities in the Statement of Operations. (2) Transfers to/from Levels 1, 2 and 3 are recognized at the end of the reporting period. The estimated fair value of the Public Warrants transferred from a Level 3 measurement to a Level 1 measurement and the estimated fair value of the Private Placement Warrants transferred from a Level 3 measurement to a Level 2 measurement during the period ended December 31, 2020 when the Public Warrants were separately listed and traded.	Note 9— Fair Value Measurements The following table presents information about the Company’s assets that are measured at fair value on a recurring basis at September 30, 2021 and December 31, 2020, and indicates the fair value hierarchy of the valuation inputs the Company utilized to determine such fair value: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ September 30, Description Level 2021 Assets: ​ Marketable securities held in the Trust Account (1) 1 ​ $ 305,332,346 Liabilities: ​ ​ Private Placement Warrants (2) 2 ​ 8,754,545 Public Warrants (2) 1 ​ 16,486,363 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, Description Level 2020 Assets: ​ Marketable securities held in the Trust Account (1) 1 ​ $ 305,311,303 Liabilities: ​ Private Placement Warrants (2) 2 ​ 9,078,787 Public Warrants (2) 1 ​ 17,096,969 (1) The fair value of the marketable securities held in the Trust account approximates the carrying amount primarily due to their short-term nature. (2) Measured at fair value on a recurring basis. Warrants The Warrants are accounted for as liabilities in accordance with ASC 815-40 and are presented within warrant liabilities on the Balance Sheet. The warrant liabilities are measured at fair value at inception and on a recurring basis, with changes in fair value presented within change in fair value of warrant liabilities in the Statement of Operations. Subsequent Measurement The Warrants are measured at fair value on a recurring basis and were initially measured at fair value as Level 3 financial liabilities using a Binomial Lattice based approach as of the Company’s public offering date. The subsequent measurement of the Public Warrants as of September 30, 2021, and December 31, 2020 are classified as Level 1 due to the use of an observable market quote in an active market under the ticker BSN.WS. As the transfer of Private Placement Warrants to anyone outside of a small group of individuals who are permitted transferees would result in the Private Placement Warrants having substantially the same terms as the Public Warrants, the Company determined that the fair value of each Private Placement Warrant is equivalent to that of each Public Warrant, with an insignificant adjustment for short-term marketability restrictions. As such, the Private Placement Warrants are classified as Level 2 As of September 30, 2021, the aggregate values of the Private Placement Warrants and Public Warrants were $8.8 million and $16.5 million, respectively. The following table presents the changes in the fair value of warrant liabilities: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Private Placement Warrants Public Warrants Warrant Liabilities (2) Fair value as of December 31, 2020 ​ $ 9,078,787 ​ $ 17,096,969 ​ $ 26,175,756 Change in valuation inputs or other assumptions (1) ​ (324,242) ​ (610,606) ​ (934,848) Fair value as of September 30, 2021 ​ $ 8,754,545 ​ $ 16,486,363 ​ $ 25,240,908 (1) Changes in valuation inputs or other assumptions are recognized in change in fair value of warrant liabilities in the Statement of Operations. (2) Transfers to/from Levels 1, 2 and 3 are recognized at the end of the reporting period. The estimated fair value of the Public Warrants transferred from a Level 3 measurement to a Level 1 measurement and the estimated fair value of the Private Placement Warrants transferred from a Level 3 measurement to a Level 2 measurement during the period ended December 31, 2020 when the Public Warrants were separately listed and traded. The measurement for the Private Placement Warrants remains unchanged for the nine months ended September 30, 2021.

Subsequent Events

Subsequent Events	8 Months Ended	9 Months Ended
	Dec. 31, 2020	Sep. 30, 2021
CIK0001815805 BROADSTONE ACQUISITION CORP.
Subsequent Events	Note 11—Subsequent Events Management has evaluated subsequent events to determine if events or transactions occurring through June 9, 2021, the date the financial statements were issued, require potential adjustment to or disclosure in the financial statements and has concluded that all such events that would require recognition or disclosure have been recognized or disclosed.	Note 10—Subsequent Events Management evaluated subsequent events and transactions that occurred after the balance sheet date up to the date that the unaudited condensed financial statements were issued. Based upon this review, the Company did not identify any subsequent events that would have required adjustment or disclosure in the unaudited condensed financial statements other than those already disclosed.

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies) - CIK0001815805 BROADSTONE ACQUISITION CORP.	8 Months Ended	9 Months Ended
	Dec. 31, 2020	Sep. 30, 2021
Emerging Growth Company	Emerging Growth Company The Company is an “emerging growth company,” as defined in Section 2(a) of the Securities Act, as modified by the Jumpstart Our Business Startups Act of 2012 (the “JOBS Act”), and it may take advantage of certain exemptions from various reporting requirements that are applicable to other public companies that are not emerging growth companies including, but not limited to, not being required to comply with the auditor attestation requirements of Section 404 of the Sarbanes-Oxley Act of 2002, reduced disclosure obligations regarding executive compensation in its periodic reports and proxy statements, and exemptions from the requirements of holding a nonbinding advisory vote on executive compensation and stockholder approval of any golden parachute payments not previously approved. Further, Section 102(b)(1) of the JOBS Act exempts emerging growth companies from being required to comply with new or revised financial accounting standards until private companies (that is, those that have not had a Securities Act registration statement declared effective or do not have a class of securities registered under the Exchange Act) are required to comply with the new or revised financial accounting standards. The JOBS Act provides that an emerging growth company can elect to opt out of the extended transition period and comply with the requirements that apply to non-emerging growth companies but any such an election to opt out is irrevocable. The Company has elected not to opt out of such extended transition period, which means that when a standard is issued or revised and it has different application dates for public or private companies, the Company, as an emerging growth company, can adopt the new or revised standard at the time private companies adopt the new or revised standard. This may make comparison of the Company’s financial statements with another public company that is neither an emerging growth company nor an emerging growth company that has opted out of using the extended transition period difficult or impossible because of the potential differences in accounting standards used.	Emerging Growth Company The Company is an “emerging growth company,” as defined in Section 2(a) of the Securities Act, as modified by the Jumpstart Our Business Startups Act of 2012 (the “JOBS Act”), and it may take advantage of certain exemptions from various reporting requirements that are applicable to other public companies that are not emerging growth companies including, but not limited to, not being required to comply with the auditor attestation requirements of Section 404 of the Sarbanes-Oxley Act of 2002, reduced disclosure obligations regarding executive compensation in its periodic reports and proxy statements, and exemptions from the requirements of holding a nonbinding advisory vote on executive compensation and stockholder approval of any golden parachute payments not previously approved. Further, Section 102(b)(1) of the JOBS Act exempts emerging growth companies from being required to comply with new or revised financial accounting standards until private companies (that is, those that have not had a Securities Act registration statement declared effective or do not have a class of securities registered under the Exchange Act) are required to comply with the new or revised financial accounting standards. The JOBS Act provides that an emerging growth company can elect to opt out of the extended transition period and comply with the requirements that apply to non-emerging growth companies but any such an election to opt out is irrevocable. The Company has elected not to opt out of such extended transition period, which means that when a standard is issued or revised and it has different application dates for public or private companies, the Company, as an emerging growth company, can adopt the new or revised standard at the time private companies adopt the new or revised standard. This may make comparison of the Company’s financial statements with another public company that is neither an emerging growth company nor an emerging growth company that has opted out of using the extended transition period difficult or impossible because of the potential differences in accounting standards used.
Basis of Presentation	Basis of Presentation The accompanying financial statements are presented in U.S. dollars, in conformity with accounting principles generally accepted in the United States of America (“GAAP”) for financial information and pursuant to the rules and regulations of the SEC. As described in the Company’s Form 8-K filed on November 22, 2021 and in Note 2—Restatement of Previously Issued Financial Statements, the Company’s financial statements as of and for the period from May 13, 2020 (inception) through December 31, 2020, and the unaudited interim financial statements as of September 30, 2020, and for the three months ended September 30, 2020, and the period from May 13, 2020 (inception) through September 30, 2020 (collectively, the “2020 Affected Periods”), were restated in the Company’s Annual Report on Form 10-K/A (Amendment No. 2) (the “Annual Report”) to correct the misapplication of accounting guidance related to the Company’s Public Shares in the Company’s previously issued audited and unaudited condensed financial statements for such periods and related to the Company’s calculation of earnings per share. The restated financial statements are indicated as “Restated” in the audited and accompanying notes, as applicable. See Note 2—Restatement of Previously Issued Financial Statements for further discussion.	Basis of Presentation The accompanying unaudited condensed financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) for interim financial information and in accordance with the instructions to Form 10-Q and Article 8 of Regulation S-X of the SEC. Certain information or footnote disclosures normally included in the financial statements prepared in accordance with GAAP have been condensed or omitted, pursuant to the rules and regulations of the SEC for interim financial reporting. Accordingly, they do not include all the information and footnotes necessary for a complete presentation of financial position, results of operations, or cash flows. In the opinion of management, the accompanying unaudited condensed financial statements include all adjustments, consisting of a normal recurring nature, which are necessary for a fair presentation of the financial position, operating results and cash flows for the periods presented. The accompanying unaudited condensed financial statements should be read in conjunction with the Company’s Annual Report on Form 10-K/A Amendment No. 2 for the period from May 13, 2020 (inception) through December 31, 2020, as filed with the SEC on November 22, 2021, which contains the audited financial statements and notes thereto. The financial information as of December 31, 2020 is derived from the audited financial statements presented in the Company’s Annual Report on Form 10-K/A Amendment No. 2 for the year ended December 31, 2020. The interim results for the three and nine months ended September 30, 2021 are not necessarily indicative of the results to be expected for the year ending December 31, 2021 or for any future interim periods.
Risk and Uncertainties	Risk and Uncertainties On January 30, 2020, the World Health Organization (“WHO”) announced a global health emergency because of a new strain of coronavirus (the “COVID-19 outbreak”). In March 2020, the WHO classified the COVID-19 outbreak as a pandemic, based on the rapid increase in exposure globally. The full impact of the COVID-19 outbreak continues to evolve. The impact of the COVID-19 outbreak on the Company’s results of operations, financial position and cash flows will depend on future developments, including the duration and spread of the outbreak and related advisories and restrictions. These developments and the impact of the COVID-19 outbreak on the financial markets and the overall economy are highly uncertain and cannot be predicted. If the financial markets and/or the overall economy are impacted for an extended period, the Company’s results of operations, financial position and cash flows may be materially adversely affected. Additionally, the Company’s ability to complete an Initial Business Combination may be materially adversely affected due to significant governmental measures being implemented to contain the COVID-19 outbreak or treat its impact, including travel restrictions, the shutdown of businesses and quarantines, among others, which may limit the Company’s ability to have meetings with potential investors or affect the ability of a potential target company’s personnel, vendors and service providers to negotiate and consummate an Initial Business Combination in a timely manner. The Company’s ability to consummate an Initial Business Combination may also be dependent on the ability to raise additional equity and debt financing, which may be impacted by the COVID-19 outbreak and the resulting market downturn.	Risk and Uncertainties On January 30, 2020, the World Health Organization (“WHO”) announced a global health emergency because of a new strain of coronavirus (the “COVID-19 outbreak”). In March 2020, the WHO classified the COVID-19 outbreak as a pandemic, based on the rapid increase in exposure globally. The full impact of the COVID-19 outbreak continues to evolve. The impact of the COVID-19 outbreak on the Company’s results of operations, financial position and cash flows will depend on future developments, including the duration and spread of the outbreak and related advisories and restrictions. These developments and the impact of the COVID-19 outbreak on the financial markets and the overall economy are highly uncertain and cannot be predicted. If the financial markets and/or the overall economy are impacted for an extended period, the Company’s results of operations, financial position and cash flows may be materially adversely affected. Additionally, the Company’s ability to complete an Initial Business Combination may be materially adversely affected due to significant governmental measures being implemented to contain the COVID-19 outbreak or treat its impact, including travel restrictions, the shutdown of businesses and quarantines, among others, which may limit the Company’s ability to have meetings with potential investors or affect the ability of a potential target company’s personnel, vendors and service providers to negotiate and consummate an Initial Business Combination in a timely manner. The Company’s ability to consummate an Initial Business Combination may also be dependent on the ability to raise additional equity and debt financing, which may be impacted by the COVID-19 outbreak and the resulting market downturn.
Going Concern		Going Concern In connection with the Company’s assessment of going concern considerations in accordance with FASB’s Accounting Standards Update (“ASU”) 2014-15, “Disclosures of Uncertainties about an Entity’s Ability to Continue as a Going Concern,” management has determined that if the Company is unable to complete a Business Combination by September 15, 2022, then the Company will cease all operations except for the purpose of liquidating. Further, as of September 30, 2021, we had approximately $0.7 million in our operating bank account and working capital deficit of approximately $(2.0) million. The date for mandatory liquidation and subsequent dissolution as well as the Company’s current cash balance and working capital deficit raise substantial doubt about the Company’s ability to continue as a going concern. No adjustments have been made to the carrying amounts of assets or liabilities should the Company be required to liquidate after September 15, 2022. The Company intends to complete a Business Combination before the mandatory liquidation date.
Liquidity and Capital Resources	Liquidity and Capital Resources As of December 31, 2020, the Company had approximately $1.6 million in its operating bank account and working capital of approximately $1.6 million. To date, the Company’s liquidity needs have been satisfied through a payment of $25,000 from the Sponsor to cover certain expenses on behalf of the Company in exchange for the issuance of the Founder Shares (as defined in Note 4), a loan of approximately $133,000 pursuant to the Note issued to the Sponsor (Note 4) and the net proceeds from the consummation of the Private Placement not held in the Trust Account. The Company fully repaid the Note on September 15, 2020. In addition, in order to finance transaction costs in connection with a Business Combination, the Company’s officers, directors and Initial Shareholders may, but are not obligated to, provide the Company Working Capital Loans (see Note 5). To date, there were no amounts outstanding under any Working Capital Loans. The Company will be using funds held outside of the Trust Account for paying existing accounts payable, identifying and evaluating prospective initial Business Combination candidates, performing due diligence on prospective target businesses, paying for travel expenditures, selecting the target business to merge with or acquire, and structuring, negotiating and consummating the Business Combination. Management continues to evaluate the impact of the COVID-19 pandemic and has concluded that the specific impact is not readily determinable as of the date of the financial statements. The financial statements do not include any adjustments that might result from the outcome of this uncertainty.
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with U.S. GAAP requires the Company’s management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements. Making estimates requires management to exercise significant judgment. It is at least reasonably possible that the estimate of the effect of a condition, situation or set of circumstances that existed at the date of the financial statements, which management considered in formulating its estimate, could change in the near term due to one or more future confirming events. Accordingly, the actual results could differ significantly from those estimates.	Use of Estimates The preparation of financial statements in conformity with GAAP requires the Company’s management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements. Making estimates requires management to exercise significant judgment. It is at least reasonably possible that the estimate of the effect of a condition, situation or set of circumstances that existed at the date of the financial statements, which management considered in formulating its estimate, could change in the near term due to one or more future confirming events. Accordingly, the actual results could differ significantly from those estimates. One of the more significant accounting estimates included in these financial statements is the determination of the fair value of the warrant liabilities.
Cash and Cash Equivalents	Cash and Cash Equivalents The Company considers all short-term investments with an original maturity of three months or less when purchased to be cash equivalents. The Company had $305,311,303 in cash equivalents held in the Trust Account as of December 31, 2020.	Cash and Cash Equivalents The Company considers all short-term investments with an original maturity of three months or less when purchased to be cash equivalents. The Company had $305,332,346 and $305,311,303 in cash equivalents held in the Trust Account as of September 30, 2021 and December 31, 2020, respectively.
Investments Held in Trust Account	Investments Held in Trust Account The Company’s portfolio of investments held in trust is comprised solely of U.S. government securities, within the meaning set forth in Section 2(a)(16) of the Investment Company Act, with a maturity of 185 days or less, or investments in money market funds that invest in U.S. government securities, or a combination thereof. The Company’s investments held in the Trust Account are classified as trading securities. Trading securities are presented on the balance sheet at fair value at the end of each reporting period. Gains and losses resulting from the change in fair value of these investments are included in income earned on investments in Trust Account in the accompanying statement of operations. The estimated fair values of investments held in the Trust Account are determined using available market information, other than for investments in open-ended money market funds with published daily net asset values (“NAV”), in which case the Company uses NAV as a practical expedient to fair value. The NAV on these investments is typically held constant at $1.00 per unit.	Investments Held in Trust Account The Company’s portfolio of investments held in trust is comprised solely of U.S. government securities, within the meaning set forth in Section 2(a)(16) of the Investment Company Act, with a maturity of 185 days or less, or investments in money market funds that invest in U.S. government securities, or a combination thereof. The Company’s investments held in the Trust Account are classified as trading securities. Trading securities are presented on the balance sheet at fair value at the end of each reporting period. Gains and losses resulting from the change in fair value of these investments are included in income earned on investments held in the Trust Account in the accompanying statement of operations. The estimated fair values of investments held in the Trust Account are determined using available market information, other than for investments in open-ended money market funds with published daily net asset values (“NAV”), in which case the Company uses NAV as a practical expedient to fair value. The NAV on these investments is typically held constant at $1.00 per unit.
Concentration of Credit Risk	Concentration of Credit Risk Financial instruments that potentially subject the Company to concentrations of credit risk consist of cash accounts in a financial institution, which, at times, may exceed the Federal Depository Insurance Coverage of $250,000, and investments held in Trust Account. At December 31, 2020, the Company has not experienced losses on these accounts and management believes the Company is not exposed to significant risks on such accounts.	Concentration of Credit Risk Financial instruments that potentially subject the Company to concentrations of credit risk consist of cash accounts in a financial institution, which, at times, may exceed the Federal Deposit Insurance Company coverage of $250,000, and investments held in Trust Account. At September 30, 2021, the Company has not experienced losses on these accounts and management believes the Company is not exposed to significant risks on such accounts.
Fair Value	Fair Value Fair value is defined as the price that would be received for sale of an asset or paid for transfer of a liability, in an orderly transaction between market participants at the measurement date. U.S. GAAP establishes a three-tier fair value hierarchy, which prioritizes the inputs used in measuring fair value. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to unobservable inputs (Level 3 measurements). These tiers include: ● Level 1, defined as observable inputs such as quoted prices for identical instruments in active markets; ● Level 2, defined as inputs other than quoted prices in active markets that are either directly or indirectly observable such as quoted prices for similar instruments in active markets or quoted prices for identical or similar instruments in markets that are not active; and ● Level 3, defined as unobservable inputs in which little or no market data exists, therefore requiring an entity to develop its own assumptions, such as valuations derived from valuation techniques in which one or more significant inputs or significant value drivers are unobservable. In some circumstances, the inputs used to measure fair value might be categorized within different levels of the fair value hierarchy. In those instances, the fair value measurement is categorized in its entirety in the fair value hierarchy based on the lowest level input that is significant to the fair value measurement.	Fair Value Fair value is defined as the price that would be received for sale of an asset or paid for transfer of a liability, in an orderly transaction between market participants at the measurement date. GAAP establishes a three-tier fair value hierarchy, which prioritizes the inputs used in measuring fair value. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to unobservable inputs (Level 3 measurements). These tiers include: ● Level 1, defined as observable inputs such as quoted prices for identical instruments in active markets; ● Level 2, defined as inputs other than quoted prices in active markets that are either directly or indirectly observable such as quoted prices for similar instruments in active markets or quoted prices for identical or similar instruments in markets that are not active; and ● Level 3, defined as unobservable inputs in which little or no market data exists, therefore requiring an entity to develop its own assumptions, such as valuations derived from valuation techniques in which one or more significant inputs or significant value drivers are unobservable. In some circumstances, the inputs used to measure fair value might be categorized within different levels of the fair value hierarchy. In those instances, the fair value measurement is categorized in its entirety in the fair value hierarchy based on the lowest level input that is significant to the fair value measurement.
Fair Value of Financial Instruments	Fair Value of Financial Instruments As of December 31, 2020, the carrying values of cash, accounts payable and accrued expenses approximate their fair values due to the short-term nature of the instruments. As of December 31, 2020, the Company’s portfolio of investments held in the Trust Account is comprised entirely of investments in money market funds that invest in U.S. government securities. The Company uses NAV as a practical expedient to fair value for its investments in money market funds with published NAV.	Fair Value of Financial Instruments As of September 30, 2021, and December 31, 2020, the carrying values of cash, accounts payable and accrued expenses approximate their fair values due to the short-term nature of the instruments. As of September 30, 2021, the Company’s portfolio of investments held in the Trust Account is comprised entirely of investments in money market funds that invest in U.S. government securities. The Company uses NAV as a practical expedient to fair value for its investments in money market funds with published NAV.
Offering Costs	Offering Costs Associated with the Initial Public Offering The Company complies with the requirements of the ASC 340-10-S99-1 and SEC Staff Accounting Bulletin ("SAB") Topic 5A - "Expenses of Offering". Offering costs consist principally of professional and registration fees incurred through the balance sheet date that are related to the IPO and were charged to shareholders’ equity upon the completion of the IPO. Offering costs amounted to $16,935,162, of which $16,173,600 were charged to temporary equity upon the completion of the Initial Public Offering and $677,570 were charged as general and administrative expenses to the statement of operations.	Offering Costs Offering costs consisted of legal, accounting and other expenses incurred through the Initial Public Offering that were directly related to the Initial Public Offering. Offering costs were allocated to the separable financial instruments issued in the Initial Public Offering based on a relative fair value basis, compared to total proceeds received. Offering costs allocated to warrant liabilities were expensed as incurred in the statements of operations. Offering costs associated with the Class A ordinary shares issued were initially charged to temporary equity and then accreted to ordinary shares subject to redemption upon the completion of the Initial Public Offering.
Warrant Liabilities	Warrant Liabilities The Company evaluated the Public Warrants and Private Placement Warrants (collectively, “Warrants”, which are discussed in Note 4, Note 7, Note 8 and Note 9) in accordance with ASC 815-40, “Derivatives and Hedging — Contracts in Entity’s Own Equity”, and concluded that a provision in the Warrant Agreement related to certain tender or exchange offers precludes the Warrants from being accounted for as components of equity. As the Warrants meet the definition of a derivative as contemplated in ASC 815, the Warrants are recorded as derivative liabilities on the Balance Sheet and measured at fair value at inception (on the date of the IPO) and at each reporting date in accordance with ASC 820, “Fair Value Measurement”, with changes in fair value recognized in the Statement of Operations in the period of change.	Warrant Liabilities The Company evaluated the Public Warrants and Private Placement Warrants (collectively, “Warrants”, which are discussed in Note 3, Note 6, Note 7 and Note 8) in accordance with ASC 815-40, “Derivatives and Hedging — Contracts in Entity’s Own Equity”, and concluded that a provision in the Warrant Agreement related to certain tender or exchange offers precludes the Warrants from being accounted for as components of equity. As the Warrants meet the definition of a derivative as contemplated in ASC 815, the Warrants are recorded as derivative liabilities on the Balance Sheet and measured at fair value at inception (on the date of the IPO) and at each reporting date in accordance with ASC 820, “Fair Value Measurement”, with changes in fair value recognized in the Statement of Operations in the period of change.
Class A Ordinary Shares Subject to Possible Redemption	Class A Ordinary Shares Subject to Possible Redemption The Company accounts for its Class A ordinary shares subject to possible redemption in accordance with the guidance in FASB ASC Topic 480 “Distinguishing Liabilities from Equity.” Class A ordinary shares subject to mandatory redemption (if any) are classified as liability instruments and are measured at fair value. Conditionally redeemable Class A ordinary shares (including Class A ordinary shares that feature redemption rights that are either within the control of the holder or subject to redemption upon the occurrence of uncertain events not solely within the Company’s control) are classified as temporary equity. At all other times, Class A ordinary shares are classified as shareholders’ equity. The Company’s Class A ordinary shares feature certain redemption rights that are considered to be outside of the Company’s control and subject to the occurrence of uncertain future events. Accordingly, as of December 31, 2020, 26,508,694 Class A ordinary shares subject to possible redemption are presented as temporary equity, outside of the shareholders’ equity section of the Company’s balance sheet.	Class A Ordinary Shares Subject to Possible Redemption The Company accounts for its Class A ordinary shares subject to possible redemption in accordance with the guidance in FASB ASC Topic 480 “Distinguishing Liabilities from Equity.” Class A ordinary shares subject to mandatory redemption (if any) are classified as liability instruments and are measured at fair value. Conditionally redeemable Class A ordinary shares (including Class A ordinary shares that feature redemption rights that are either within the control of the holder or subject to redemption upon the occurrence of uncertain events not solely within the Company’s control) are classified as temporary equity. At all other times, Class A ordinary shares are classified as shareholders’ equity. The Company’s Class A ordinary shares feature certain redemption rights that are considered to be outside of the Company’s control and subject to the occurrence of uncertain future events. Accordingly, as of September 30, 2021 and December 31, 2020, 30,530,301 Class A ordinary shares subject to possible redemption are presented as temporary equity, outside of the shareholders’ equity section of the Company’s balance sheet.
Components of Equity	Components of Equity Upon the IPO, the Company issued Class A ordinary shares and Warrants. The Company allocated the proceeds received from the issuance using the with-and-without method. Under that method, the Company first allocated the proceeds to the Public Warrants based on their initial fair value measurement of $11,955,000 and then allocated the remaining proceeds, net of underwriting discounts and offering costs of $16,935,163, to the Class A ordinary shares. All of the 30,530,301 Class A ordinary shares are presented within temporary equity, as shares are subject to redemption upon the occurrence of events not solely within the Company’s control. Similarly, the Company first allocated the proceeds of the Private Placement Warrants based on their initial fair value measurement of $6,368,000 and then allocated the remaining proceeds of $1,654,167 to the Class A ordinary shares.
Net Income (Loss) Per Ordinary Share	​ Net Loss Per Ordinary Share The Company complies with accounting and disclosure requirements of FASB ASC Topic 260, “Earnings Per Share.” The Company has two classes of shares, which are referred to as Class A ordinary shares and Class B ordinary shares. Income and losses are shared pro rata between the two classes of shares. Net loss per ordinary share is calculated by dividing the net income (loss) by the weighted average of ordinary shares outstanding for the respective period. The Company did not consider the effect of the warrants issued in connection with the Initial Public Offering and the Private Placement to purchase an aggregate of 23,371,211 shares of ordinary shares in the calculation of diluted loss per share because their exercise is contingent upon future events and since their inclusion would be anti-dilutive under the treasury stock method. Accretion associated with the redeemable Class A ordinary shares is excluded from earnings per share as the redemption value approximates fair value. The following table reflects presents a reconciliation of the numerator and denominator used to compute basic and diluted net loss per share for each class of ordinary shares: ​ ​ ​ ​ ​ ​ ​ ​ ​ For the period ​ ​ From May 13, 2020 ​ ​ (inception) through ​ ​ December 31, 2020 ​ ​ Class A ​ Class B Basic and diluted net loss per ordinary share ​ ​ ​ ​ ​ ​ Numerator: ​ ​ ​ ​ ​ ​ Allocation of net loss, as adjusted ​ $ (5,596,126) ​ $ (3,170,401) Denominator: ​ ​ ​ ​ ​ ​ Basic and diluted weighted average shares outstanding ​ ​ 14,320,851 ​ ​ 8,113,263 Basic and diluted net loss per ordinary share ​ $ (0.39) ​ $ (0.39)	Net Income (Loss) Per Ordinary Share Net income (loss) per share is computed by dividing net (loss) income by the weighted-average number of ordinary shares outstanding during the periods. The Company has not considered the effect of the warrants sold in the Initial Public Offering and the Private Placement to purchase an aggregate of 23,371,211, of the Company’s Class A ordinary shares in the calculation of diluted income (loss) per share, since their inclusion would be anti-dilutive under the treasury stock method. In connection with the change in presentation for the Class A ordinary shares subject to redemption, the Company also revised its earnings per share calculations to allocate net income/loss evenly to Class A and Class B ordinary shares. This presentation contemplates a Business Combination as the most likely outcome, in which case, both classes of stock share pro rata in the income/loss of the Company. The contractual formula utilized to calculate the redemption amount approximates fair value. The Class feature to redeem at fair value means that there is effectively only one class of stock. Changes in fair value are not considered a dividend for the purposes of the numerator in the earnings per share calculation. The calculation of diluted income per ordinary stock does not consider the effect of the warrants issued in connection with the IPO since the exercise of the warrants are contingent upon the occurrence of future events and the inclusion of such warrants would be anti-dilutive. The following table reflects the calculation of basic and diluted net income per ordinary share: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ For the three months ​ For the nine months ended ​ ​ ended September 30, 2021 ​ September 30, 2021 ​ Class A Class B Class A Class B Basic and diluted net loss per ordinary share ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Numerator: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Allocation of net income (loss), as adjusted ​ $ 1,757,014 ​ $ 439,254 ​ $ (2,177,496) ​ $ (544,374) Denominator: ​ ​ ​ ​ ​ ​ ​ ​ ​ Basic and diluted weighted average shares outstanding ​ ​ 30,530,301 ​ 7,632,575 ​ 30,530,301 ​ 7,632,575 Basic and diluted net income (loss), per ordinary share ​ $ 0.06 ​ $ 0.06 ​ $ (0.07) ​ $ (0.07) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ For the period ​ ​ ​ ​ ​ ​ ​ ​ from May 13, 2020 ​ ​ For the three months ​ (inception) through ​ ​ ended September 30, 2020 ​ September 30, 2020 ​ Class A Class B Class A Class B Basic and diluted net loss per ordinary share ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Numerator: ​ ​ ​ ​ ​ ​ ​ Allocation of net loss, as adjusted ​ $ (246,740) ​ $ (407,892) $ (194,223) ​ $ (471,141) Denominator: ​ ​ Basic and diluted weighted average shares outstanding ​ 5,217,391 ​ 8,625,000 3,404,255 8,255,357 Basic and diluted net loss per ordinary share ​ $ (0.05) ​ $ (0.05) $ (0.06) ​ $ (0.06) ​
Income Taxes	Income Taxes The Company follows the asset and liability method of accounting for income taxes under FASB ASC Topic 740, “ Income Taxes FASB ASC Topic 740 prescribes a recognition threshold and a measurement attribute for the financial statement recognition and measurement of tax positions taken or expected to be taken in a tax return. For those benefits to be recognized, a tax position must be more likely than not to be sustained upon examination by taxing authorities. There were no unrecognized tax benefits as of December 31, 2020. The Company’s management determined that the Cayman Islands is the Company’s only major tax jurisdiction. The Company recognizes accrued interest and penalties related to unrecognized tax benefits as income tax expense. There were no unrecognized tax benefits and no amounts were accrued for interest and penalties for the period from May 13, 2020 (inception) through December 31, 2020. The Company is currently not aware of any issues under review that could result in significant payments, accruals or material deviation from its position. The Company may be subject to potential examination by U.S. federal, U.S. state or foreign taxing authorities in the area of income taxes. These potential examinations may include questioning the timing and amount of deductions, the nexus of income among various tax jurisdictions and compliance with U.S. federal, U.S. state and foreign tax laws. There is currently no taxation imposed on income by the Government of the Cayman Islands. In accordance with Cayman federal income tax regulations, income taxes are not levied on the Company. Consequently, deferred tax assets and income taxes are not reflected in the Company’s financial statements. The Company’s management does not expect that the total amount of unrecognized tax benefits will materially change over the next twelve months.	Income Taxes The Company follows the asset and liability method of accounting for income taxes under FASB ASC Topic 740, “ Income Taxes FASB ASC Topic 740 prescribes a recognition threshold and a measurement attribute for the financial statement recognition and measurement of tax positions taken or expected to be taken in a tax return. For those benefits to be recognized, a tax position must be more likely than not to be sustained upon examination by taxing authorities. There were no unrecognized tax benefits as of September 30, 2021 and December 31, 2020. The Company’s management determined that the Cayman Islands is the Company’s only major tax jurisdiction. The Company recognizes accrued interest and penalties related to unrecognized tax benefits as income tax expense. There were no unrecognized tax benefits and no amounts were accrued for interest and penalties for the three months and nine months ended September 30, 2021. The Company is currently not aware of any issues under review that could result in significant payments, accruals or material deviation from its position. The Company may be subject to potential examination by U.S. federal, U.S. state or foreign taxing authorities in the area of income taxes. These potential examinations may include questioning the timing and amount of deductions, the nexus of income among various tax jurisdictions and compliance with U.S. federal, U.S. state and foreign tax laws. There is currently no taxation imposed on income by the Government of the Cayman Islands. In accordance with Cayman federal income tax regulations, income taxes are not levied on the Company. Consequently, deferred tax assets and income taxes are not reflected in the Company’s financial statements. The Company’s management does not expect that the total amount of unrecognized tax benefits will materially change over the next twelve months.
Recent Accounting Standards	Recent Accounting Standards Management does not believe that any recently issued, but not yet effective, accounting standards if currently adopted would have a material effect on the Company’s financial statements.	Recent Accounting Standards In August 2020, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2020-06, Debt — Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging — Contracts in Entity’s Own Equity (Subtopic 815-40) (“ASU 2020-06”) to simplify accounting for certain financial instruments. ASU 2020-06 eliminates the current models that require separation of beneficial conversion and cash conversion features from convertible instruments and simplifies the derivative scope exception guidance pertaining to equity classification of contracts in an entity’s own equity. The new standard also introduces additional disclosures for convertible debt and freestanding instruments that are indexed to and settled in an entity’s own equity. ASU 2020-06 amends the diluted earnings per share guidance, including the requirement to use the if-converted method for all convertible instruments. ASU 2020-06 is effective January 1, 2022 and should be applied on a full or modified retrospective basis, with early adoption permitted beginning on January 1, 2021. The Company is currently assessing the impact, if any, that ASU 2020-06 would have on the financial position, results of operations or cash flows. Management does not believe that any other recently issued, but not yet effective, accounting standards, if currently adopted, would have a material effect on our condensed financial statements.

Restatement of Previously Iss_2

Restatement of Previously Issued Financial Statements (Tables)	5 Months Ended	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2021
CIK0001815805 BROADSTONE ACQUISITION CORP.
Summary of impact of the revision on the audited balance sheet	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ As Reported ​ ​ ​ ​ ​ ​ ​ ​ As Previously ​ ​ ​ ​ ​ ​ ​ Restated in ​ ​ ​ ​ ​ ​ 10 K/A Amendment ​ ​ ​ ​ ​ ​ ​ ​ No. 1 ​ Adjustment ​ As Restated Balance Sheet as of September 15, 2020 (unaudited) ​ ​ ​ ​ ​ ​ ​ ​ ​ Class A ordinary shares subject to possible redemption ​ $ 268,023,290 ​ $ 31,976,710 ​ $ 300,000,000 Class A ordinary shares ​ 320 ​ (320) ​ — Additional paid-in capital ​ 5,711,600 ​ (5,711,600) ​ — Retained earnings (accumulated deficit) ​ ​ (712,775) ​ ​ (26,264,790) ​ ​ (26,977,565) Total shareholders’ equity (deficit) ​ $ 5,000,008 ​ $ (31,976,710) ​ $ (26,976,702) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Balance Sheet as of September 30, 2020 (unaudited) ​ ​ ​ ​ ​ ​ ​ ​ ​ Class A ordinary shares subject to possible redemption ​ $ 268,070,700 ​ $ 31,929,300 ​ $ 300,000,000 Class A ordinary shares ​ 319 ​ (319) ​ — Additional paid-in capital ​ 5,664,191 ​ (5,664,191) ​ — Retained earnings (accumulated deficit) ​ ​ (665,364) ​ ​ (26,264,790) ​ ​ (26,930,154) Total shareholders’ equity (deficit) ​ $ 5,000,009 ​ $ (31,929,300) ​ $ (26,929,291) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Balance Sheet as of October 14, 2020 (unaudited) ​ ​ ​ Class A ordinary shares subject to possible redemption ​ $ 272,992,338 ​ $ 32,310,672 ​ $ 305,303,010 Class A ordinary shares ​ 324 ​ (324) ​ — Additional paid-in capital ​ 5,859,953 ​ (5,859,953) ​ — Retained earnings (accumulated deficit) ​ ​ (861,137) ​ ​ (26,450,395) ​ ​ (27,366,562) Total shareholders’ equity (deficit) ​ $ 5,000,003 ​ $ (32,310,672) ​ $ (27,310,669) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Balance Sheet as of December 31, 2020 ​ ​ ​ Class A ordinary shares subject to possible redemption ​ $ 265,086,944 ​ $ 40,216,066 ​ $ 305,303,010 Class A ordinary shares ​ 402 ​ (402) ​ — Additional paid-in capital ​ 13,765,368 ​ (13,765,368) ​ — Retained earnings (accumulated deficit) ​ ​ (8,766,527) ​ ​ (26,450,296) ​ ​ (35,216,823) Total shareholders’ equity (deficit) ​ $ 5,000,006 ​ $ (40,216,066) ​ $ (35,216,060) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Statement of Operations for the three months ended September 30, 2020 (unaudited) ​ ​ ​ ​ ​ ​ ​ ​ ​ Net loss ​ $ (654,632) ​ $ — ​ $ (654,632) Weighted average shares outstanding – Class A ​ ​ 30,000,000 ​ ​ (24,690,382) ​ ​ 5,309,618 Basic and diluted net loss per ordinary share – Class A ​ $ 0.00 ​ $ (0.05) ​ $ (0.05) Weighted average shares outstanding – Class B ​ ​ 8,625,000 ​ ​ — ​ ​ 8,625,000 Basic and diluted net loss per ordinary share – Class B ​ $ (0.01) ​ $ (0.04) ​ $ (0.05) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Statement of Operations for the period from May 13, 2020 (inception) through September 30, 2020 (unaudited) ​ ​ ​ ​ ​ ​ ​ ​ ​ Net loss ​ $ (665,364) ​ $ — ​ $ (665,364) Weighted average shares outstanding – Class A ​ ​ 30,000,000 ​ ​ (26,752,096) ​ ​ 3,247,904 Basic and diluted net loss per ordinary share – Class A ​ $ 0.00 ​ $ (0.06) ​ $ (0.06) Weighted average shares outstanding – Class B ​ ​ 8,625,000 ​ ​ (369,643) ​ ​ 8,255,357 Basic and diluted net loss per ordinary share – Class B ​ $ (0.01) ​ $ (0.05) ​ $ (0.06) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Statement of Operations for the period from May 13, 2020 (inception) through December 31, 2020 ​ ​ ​ Net loss ​ $ (8,766,527) ​ $ — ​ $ (8,766,527) Weighted average shares outstanding – Class A ​ ​ 30,387,905 ​ ​ (16,067,054) ​ ​ 14,320,851 Basic and diluted net loss per ordinary share – Class A ​ $ 0.00 ​ $ (0.39) ​ $ (0.39) Weighted average shares outstanding – Class B ​ ​ 7,539,714 ​ ​ 573,549 ​ ​ 8,113,263 Basic and diluted net loss per ordinary share – Class B ​ $ (1.16) ​ $ 0.77 ​ $ (0.39) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Statement of Cash Flows for the period from May 13, 2020 (inception) through September 30, 2020 ​ ​ ​ Supplemental disclosure of non-cash investing and financing activities: ​ ​ ​ ​ ​ ​ ​ ​ ​ Initial value of Class A ordinary shares subject to possible redemption ​ $ 267,994,700 ​ $ (267,994,700) ​ $ — Change in value of Class A ordinary shares subject to possible redemption ​ $ 76,000 ​ $ (76,000) ​ $ — ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Statement of Cash Flows for the period from May 13, 2020 (inception) through December 31, 2020 ​ ​ ​ ​ ​ ​ ​ ​ ​ Supplemental disclosure of non-cash investing and financing activities: ​ ​ ​ ​ ​ ​ Initial value of Class A ordinary shares subject to possible redemption ​ $ 268,023,290 ​ $ (268,023,290) ​ $ — Change in value of Class A ordinary shares subject to possible redemption ​ $ (2,936,346) ​ $ 2,936,346 ​ $ —	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ As ​ ​ ​ ​ ​ ​ ​ ​ Previously ​ ​ ​ ​ ​ ​ Reported Adjustment As Restated Balance Sheet as of March 31, 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ Class A ordinary shares subject to possible redemption ​ $ 274,897,708 ​ $ 30,405,302 $ 305,303,010 Class A ordinary shares ​ ​ 304 ​ ​ (304) ​ ​ — Additional paid-in capital ​ ​ 3,954,702 ​ ​ (3,954,702) ​ ​ — Retained earnings (accumulated deficit) ​ ​ 1,044,237 ​ ​ (26,450,296) ​ ​ (25,406,059) Total shareholders’ equity (deficit) ​ $ 5,000,006 $ (30,405,302) ​ $ (25,405,296) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Balance Sheet as of June 30, 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ Class A ordinary shares subject to possible redemption ​ $ 260,168,806 ​ $ 45,134,204 ​ $ 305,303,010 Class A ordinary shares ​ ​ 451 ​ ​ (451) ​ ​ — Additional paid-in capital ​ ​ 18,683,457 ​ ​ (18,683,457) ​ ​ — Accumulated deficit ​ ​ (13,684,665) ​ ​ (26,450,296) ​ ​ (40,134,961) Total shareholders’ equity (deficit) ​ $ 5,000,006 ​ $ (45,134,204) ​ $ (40,134,198) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Balance Sheet as of September 30, 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ Accrual expenses ​ $ 5,097,232 ​ $ (2,334,252) ​ $ 2,762,980 Total current liabilities ​ ​ 5,177,506 ​ ​ (2,334,252) ​ ​ 2,843,254 Total liabilities ​ ​ 41,104,019 ​ ​ (2,334,252) ​ ​ 38,769,767 Accumulated deficit ​ ​ (40,272,945) ​ ​ 2,334,252 ​ ​ (37,938,693) Total shareholders’ deficit ​ $ (40,272,182) ​ $ 2,334,252 ​ $ (37,937,930) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Statement of Operations for the three months ending September 30, 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ General and administrative expenses ​ $ 2,955,246 ​ $ (2,334,252) ​ $ 620,994 Loss from operations ​ ​ (2,955,246) ​ ​ 2,334,252 ​ ​ (620,994) Net income (loss) ​ ​ (137,984) ​ ​ 2,334,252 ​ ​ 2,196,268 Basic and diluted net income per ordinary share, Class A ​ ​ 0.00 ​ ​ 0.06 ​ ​ 0.06 Basic and diluted net income per ordinary share, Class B ​ $ 0.00 ​ $ 0.06 ​ $ 0.06 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Statement of Operations for the nine months ending September 30, 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ General and administrative expenses ​ $ 6,009,359 ​ $ (2,334,252) ​ $ 3,675,107 Loss from operations ​ ​ (6,009,359) ​ ​ 2,334,252 ​ ​ (3,675,107) Net loss ​ ​ (5,056,122) ​ ​ 2,334,252 ​ ​ (2,721,870) Basic and diluted net loss per ordinary share, Class A ​ ​ (0.13) ​ ​ 0.06 ​ ​ (0.07) Basic and diluted net loss per ordinary share, Class B ​ $ (0.13) ​ $ 0.06 ​ $ (0.07) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Statement of Cash Flows for the three months ended March 31, 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ Supplemental disclosure of non-cash investing and financing activities: ​ ​ ​ ​ ​ ​ ​ ​ ​ Change in value of Class A ordinary shares subject to redemption ​ $ 9,810,764 ​ $ (9,810,764) ​ $ — ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Statement of Cash Flows for the six months ended June 30, 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ Supplemental disclosure of non-cash investing and financing activities: ​ ​ ​ ​ ​ ​ ​ ​ ​ Change in value of Class A ordinary shares subject to redemption ​ $ (4,897,138) ​ $ 4,897,138 ​ $ — ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Statement of Cash Flows for the nine months ended September 30, 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ Cash Flows from Operating Activities: ​ ​ ​ ​ ​ ​ ​ ​ ​ Net Loss ​ $ (5,056,122) ​ $ 2,334,252 ​ $ (2,721,870) Changes in operating assets and liabilities ​ ​ ​ ​ ​ ​ ​ ​ ​ Accrued expenses ​ $ 5,097,013 ​ $ (2,334,252) ​ $ 2,762,761

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Tables) - CIK0001815805 BROADSTONE ACQUISITION CORP.	8 Months Ended	9 Months Ended
	Dec. 31, 2020	Sep. 30, 2021
Schedule of basic and diluted net loss per ordinary share	​ ​ ​ ​ ​ ​ ​ ​ ​ For the period ​ ​ From May 13, 2020 ​ ​ (inception) through ​ ​ December 31, 2020 ​ ​ Class A ​ Class B Basic and diluted net loss per ordinary share ​ ​ ​ ​ ​ ​ Numerator: ​ ​ ​ ​ ​ ​ Allocation of net loss, as adjusted ​ $ (5,596,126) ​ $ (3,170,401) Denominator: ​ ​ ​ ​ ​ ​ Basic and diluted weighted average shares outstanding ​ ​ 14,320,851 ​ ​ 8,113,263 Basic and diluted net loss per ordinary share ​ $ (0.39) ​ $ (0.39)	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ For the three months ​ For the nine months ended ​ ​ ended September 30, 2021 ​ September 30, 2021 ​ Class A Class B Class A Class B Basic and diluted net loss per ordinary share ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Numerator: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Allocation of net income (loss), as adjusted ​ $ 1,757,014 ​ $ 439,254 ​ $ (2,177,496) ​ $ (544,374) Denominator: ​ ​ ​ ​ ​ ​ ​ ​ ​ Basic and diluted weighted average shares outstanding ​ ​ 30,530,301 ​ 7,632,575 ​ 30,530,301 ​ 7,632,575 Basic and diluted net income (loss), per ordinary share ​ $ 0.06 ​ $ 0.06 ​ $ (0.07) ​ $ (0.07) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ For the period ​ ​ ​ ​ ​ ​ ​ ​ from May 13, 2020 ​ ​ For the three months ​ (inception) through ​ ​ ended September 30, 2020 ​ September 30, 2020 ​ Class A Class B Class A Class B Basic and diluted net loss per ordinary share ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Numerator: ​ ​ ​ ​ ​ ​ ​ Allocation of net loss, as adjusted ​ $ (246,740) ​ $ (407,892) $ (194,223) ​ $ (471,141) Denominator: ​ ​ Basic and diluted weighted average shares outstanding ​ 5,217,391 ​ 8,625,000 3,404,255 8,255,357 Basic and diluted net loss per ordinary share ​ $ (0.05) ​ $ (0.05) $ (0.06) ​ $ (0.06)
Summary of reconciliation of ordinary shares subject to possible redemption	​ ​ ​ ​ ​ Gross Proceeds $ 305,303,010 Less: ​ Proceeds allocated to Public Warrants ​ (11,955,000) Class A Ordinary Shares issuance costs ​ (16,173,600) Add: ​ Accretion of carrying value to redemption value ​ 28,128,600 Class A Ordinary Shares subject to possible redemption at December 31, 2020 ​ $ 305,303,010

Fair Value Measurements (Tables

Fair Value Measurements (Tables) - CIK0001815805 BROADSTONE ACQUISITION CORP.	8 Months Ended	9 Months Ended
	Dec. 31, 2020	Sep. 30, 2021
Schedule of assets that are measured at fair value on a recurring basis	​ ​ ​ ​ ​ ​ ​ Description Level December 31, 2020 Assets: ​ ​ ​ ​ ​ Marketable securities held in Trust Account (1) 1 ​ $ 305,311,303 Liabilities: ​ ​ ​ ​ ​ Private Placement Warrants (2) 2 ​ 9,078,787 Public Warrants (2) 1 ​ 17,096,969 (1) The fair value of the marketable securities held in Trust account approximates the carrying amount primarily due to their short-term nature. (2) Measured at fair value on a recurring basis.	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ September 30, Description Level 2021 Assets: ​ Marketable securities held in the Trust Account (1) 1 ​ $ 305,332,346 Liabilities: ​ ​ Private Placement Warrants (2) 2 ​ 8,754,545 Public Warrants (2) 1 ​ 16,486,363 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, Description Level 2020 Assets: ​ Marketable securities held in the Trust Account (1) 1 ​ $ 305,311,303 Liabilities: ​ Private Placement Warrants (2) 2 ​ 9,078,787 Public Warrants (2) 1 ​ 17,096,969 (1) The fair value of the marketable securities held in the Trust account approximates the carrying amount primarily due to their short-term nature. (2) Measured at fair value on a recurring basis.
Schedule of key inputs for warrants	​ ​ ​ ​ ​ ​ ​ September 15, ​ ​ 2020 ​ ​ (Initial Input ​ Measurement) Risk-free interest rate ​ 0.28 % Expected term (years) ​ 5.19 ​ Expected volatility ​ 16.0 % Exercise price ​ $ 11.50 ​ Fair value of Units ​ $ 9.60 ​
Schedule of changes in the fair value of warrant liabilities	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Private ​ ​ Warrant ​ ​ Placement ​ Public ​ Liabilities Fair value as of May 13, 2020 (inception) ​ $ — ​ $ — ​ $ — Initial measurement on September 15, 2020 ​ 6,368,000 ​ 11,955,000 ​ 18,323,000 Initial measurement on October 14, 2020 ​ ​ 83,893 ​ ​ 209,469 ​ ​ 293,362 Change in valuation inputs or other assumptions (1) ​ 2,626,894 ​ 4,932,500 ​ 7,559,394 Fair value as of December 31, 2020 ​ $ 9,078,787 ​ $ 17,096,969 ​ $ 26,175,756 (1) Changes in valuation inputs or other assumptions are recognized in change in fair value of warrant liabilities in the Statement of Operations. (2) Transfers to/from Levels 1, 2 and 3 are recognized at the end of the reporting period. The estimated fair value of the Public Warrants transferred from a Level 3 measurement to a Level 1 measurement and the estimated fair value of the Private Placement Warrants transferred from a Level 3 measurement to a Level 2 measurement during the period ended December 31, 2020 when the Public Warrants were separately listed and traded.	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Private Placement Warrants Public Warrants Warrant Liabilities (2) Fair value as of December 31, 2020 ​ $ 9,078,787 ​ $ 17,096,969 ​ $ 26,175,756 Change in valuation inputs or other assumptions (1) ​ (324,242) ​ (610,606) ​ (934,848) Fair value as of September 30, 2021 ​ $ 8,754,545 ​ $ 16,486,363 ​ $ 25,240,908 (1) Changes in valuation inputs or other assumptions are recognized in change in fair value of warrant liabilities in the Statement of Operations. (2) Transfers to/from Levels 1, 2 and 3 are recognized at the end of the reporting period. The estimated fair value of the Public Warrants transferred from a Level 3 measurement to a Level 1 measurement and the estimated fair value of the Private Placement Warrants transferred from a Level 3 measurement to a Level 2 measurement during the period ended December 31, 2020 when the Public Warrants were separately listed and traded. The measurement for the Private Placement Warrants remains unchanged for the nine months ended September 30, 2021.

Description of Organization, _2

Description of Organization, Business Operations and Basis of Presentation (Details) - CIK0001815805 BROADSTONE ACQUISITION CORP. - USD ($)	Oct. 14, 2020	Sep. 15, 2020	May 19, 2020	Sep. 30, 2020	Dec. 31, 2020	Sep. 30, 2021
Subsidiary, Sale of Stock [Line Items]
Offering cost				$ 5,923,016	$ 6,029,077
Deferred underwriting commissions					10,685,605	$ 10,685,605
Per share value of residual assets in trust account						$ 10
Minimum net tangible assets upon consummation of business combination					5,000,001
Cash					1,600,000	$ 700,000
Working capital deficit					1,600,000	$ (2,000,000)
Condition For Future Business Combination Number Of Businesses Minimum						one
Duration Of Combination Period						24 months
Number of Warrants Issued Per Unit		0.33
Working Capital Loans
Subsidiary, Sale of Stock [Line Items]
Price of warrants (in dollars per share)			$ 1
Outstanding balance of related party note					0	$ 0
Sponsor
Subsidiary, Sale of Stock [Line Items]
Proceeds from related party loan					133,000
Contribution from sponsor					$ 25,000
Class A ordinary shares
Subsidiary, Sale of Stock [Line Items]
Common stock, par value					$ 0.0001	$ 0.0001
Class B ordinary shares
Subsidiary, Sale of Stock [Line Items]
Common stock, par value					0.0001	0.0001
Initial Public Offering, the Over-Allotment and the Private Placement
Subsidiary, Sale of Stock [Line Items]
Share price						$ 10
Gross proceeds						$ 305,300,000
Percentage of aggregate fair market value of assets						80.00%
Ownership interest to be acquired on post-transaction company						50.00%
Maturity term of U.S. government securities						185 days
IPO
Subsidiary, Sale of Stock [Line Items]
Number of shares issued		30,000,000
Share price		$ 10			$ 10	$ 10
Gross proceeds	$ 5,300,000	$ 300,000,000			$ 305,300,000
Offering cost	292,000	16,600,000			$ 16,935,162
Deferred underwriting commissions	$ 186,000	$ 10,500,000
Percentage of aggregate fair market value of assets					80.00%
Ownership interest to be acquired on post-transaction company					50.00%
Per share value of residual assets in trust account					$ 10
Minimum net tangible assets upon consummation of business combination					$ 5,000,001	$ 5,000,001
Maximum percentage of shares that can be redeemed without prior consent of the Company					15.00%	15.00%
Percentage of shares of stock the Company is obligated to redeem without consummating a business combination					100.00%	100.00%
Maturity term of U.S. government securities					185 days
Threshold trading days to redeem the shares					10 days	10 days
Interest to pay dissolution expenses					$ 100,000	$ 100,000
IPO | Class A ordinary shares
Subsidiary, Sale of Stock [Line Items]
Share price					$ 10
Exercise price of warrants (in dollars per share)					11.50	$ 11.50
Common stock, par value					$ 0.0001	$ 0.0001
Number of Warrants Issued Per Unit					1	0.5
Over-allotment option
Subsidiary, Sale of Stock [Line Items]
Number of shares issued		4,500,000			4,500,000	4,500,000
Number of shares agreed to issue	530,301
Gross proceeds	$ 5,300,000
Offering cost	292,000
Deferred underwriting commissions	$ 186,000
Underwriting option period					45 days	45 days
Over-allotment option | Class B ordinary shares
Subsidiary, Sale of Stock [Line Items]
Number of shares agreed to issue	530,301
Private Placement
Subsidiary, Sale of Stock [Line Items]
Proceeds from issuance of warrants	$ 106,060	$ 8,000,000	$ 8,000,000
Number of warrants to purchase the shares issued (in shares)	106,060	8,000,000	8,000,000
Price of warrants (in dollars per share)			$ 1
Price of warrants		$ 1
Private Placement | Class A ordinary shares
Subsidiary, Sale of Stock [Line Items]
Exercise price of warrants (in dollars per share)		$ 11.50	$ 11.50

Restatement of Previously Iss_3

Restatement of Previously Issued Financial Statements - (Details) - CIK0001815805 BROADSTONE ACQUISITION CORP. - USD ($)	8 Months Ended	9 Months Ended
	Dec. 31, 2020	Sep. 30, 2021
Subsidiary, Sale of Stock [Line Items]
Minimum Net Tangible Assets Upon Consummation Of Business Combination	$ 5,000,001
Class A ordinary shares
Subsidiary, Sale of Stock [Line Items]
Reclassification Of Permanent Equity Into Temporary Equity		10
IPO
Subsidiary, Sale of Stock [Line Items]
Minimum Net Tangible Assets Upon Consummation Of Business Combination	$ 5,000,001	$ 5,000,001

Restatement of Previously Iss_4

Restatement of Previously Issued Financial Statements - Restatement on each financial statement (Details) - USD ($)	2 Months Ended	3 Months Ended				5 Months Ended	6 Months Ended	8 Months Ended	9 Months Ended
	Jun. 30, 2020	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2020	Sep. 30, 2020	Jun. 30, 2021	Dec. 31, 2020	Sep. 30, 2021	Oct. 14, 2020	Sep. 15, 2020	May 12, 2020
CIK0001815805 BROADSTONE ACQUISITION CORP.
STATEMENT OF FINANCIAL POSITION ABSTRACT
Accrued expenses		$ 2,762,980						$ 219	$ 2,762,980
Total current liabilities		2,843,254						155,902	2,843,254
Total liabilities		38,769,767						37,017,263	38,769,767
Accumulated deficit		(37,938,693)	$ (40,134,961)	$ (25,406,059)	$ (26,930,154)	$ (26,930,154)	$ (40,134,961)	(35,216,823)	(37,938,693)	$ (27,366,562)	$ (26,977,565)
Total Shareholders' Equity (Deficit)	$ 14,268	(37,937,930)	(40,134,198)	(25,405,296)	(26,929,291)	(26,929,291)	(40,134,198)	(35,216,060)	(37,937,930)	(27,310,669)	(26,976,702)	$ 0
CONDENSED STATEMENTS OF OPERATIONS
General and administrative expenses		620,994			732,832	743,564		922,064	3,675,107
Loss from operations		(620,994)			(732,832)	(743,564)		(922,064)	(3,675,107)
Net income (loss)	$ (10,732)	$ 2,196,268	(14,728,902)	9,810,764	$ (654,632)	(665,364)		(8,766,527)	(2,721,870)
Statement Of Cash Flows Abstarct
Profit Loss						(665,364)		(8,766,527)	(2,721,870)
Accrued expenses						$ 2,300		(74,781)	$ 2,762,761
Class A ordinary shares
CONDENSED STATEMENTS OF OPERATIONS
Basic net income (loss) per ordinary share		$ 0.06			$ (0.05)				$ (0.07)
Diluted net income (loss) per ordinary share						$ (0.06)
Class A ordinary shares | CIK0001815805 BROADSTONE ACQUISITION CORP.
STATEMENT OF FINANCIAL POSITION ABSTRACT
Reclassification Of Permanent Equity Into Temporary Equity		10							10
Class A Ordinary Shares subject to possible redemption		$ 305,303,010	305,303,010	305,303,010			305,303,010	$ 305,303,010	$ 305,303,010
CONDENSED STATEMENTS OF OPERATIONS
Basic net income (loss) per ordinary share		$ 0.06			(0.05)	(0.06)		$ (0.39)	$ (0.07)
Diluted net income (loss) per ordinary share		0.06			(0.05)	(0.06)		$ (0.39)	(0.07)
Class B ordinary shares
CONDENSED STATEMENTS OF OPERATIONS
Basic net income (loss) per ordinary share		$ 0.06			(0.05)				$ (0.07)
Diluted net income (loss) per ordinary share						(0.06)
Class B ordinary shares | CIK0001815805 BROADSTONE ACQUISITION CORP.
STATEMENT OF FINANCIAL POSITION ABSTRACT
Class A ordinary shares		$ 763						$ 763	$ 763
CONDENSED STATEMENTS OF OPERATIONS
Basic net income (loss) per ordinary share		$ 0.06			(0.05)	(0.06)		$ (0.39)	$ (0.07)
Diluted net income (loss) per ordinary share		$ 0.06			$ (0.05)	$ (0.06)		$ (0.39)	$ (0.07)
As Previously Reported | CIK0001815805 BROADSTONE ACQUISITION CORP.
STATEMENT OF FINANCIAL POSITION ABSTRACT
Class A ordinary shares					$ 319	$ 319		$ 402		324	320
Additional paid-in capital					5,664,191	5,664,191		13,765,368		5,859,953	5,711,600
Accumulated deficit					(665,364)	(665,364)		(8,766,527)		(861,137)	(712,775)
Total Shareholders' Equity (Deficit)					5,000,009	5,000,009		5,000,006		5,000,003	5,000,008
CONDENSED STATEMENTS OF OPERATIONS
Net income (loss)					$ (654,632)	$ (665,364)		$ (8,766,527)
As Previously Reported | Class A ordinary shares | CIK0001815805 BROADSTONE ACQUISITION CORP.
CONDENSED STATEMENTS OF OPERATIONS
Basic net income (loss) per ordinary share					$ 0	$ 0		$ 0
Diluted net income (loss) per ordinary share					0	0		0
As Previously Reported | Class B ordinary shares | CIK0001815805 BROADSTONE ACQUISITION CORP.
CONDENSED STATEMENTS OF OPERATIONS
Basic net income (loss) per ordinary share					(0.01)	(0.01)		(1.16)
Diluted net income (loss) per ordinary share					$ (0.01)	$ (0.01)		$ (1.16)
As Previously Reported | Restatement of Redeemable Common Stock As Temporary Equity | CIK0001815805 BROADSTONE ACQUISITION CORP.
STATEMENT OF FINANCIAL POSITION ABSTRACT
Accrued expenses		$ 5,097,232							$ 5,097,232
Total current liabilities		5,177,506							5,177,506
Total liabilities		41,104,019							41,104,019
Class A ordinary shares				304
Additional paid-in capital			18,683,457	3,954,702			18,683,457
Accumulated deficit		(40,272,945)	(13,684,665)	1,044,237			(13,684,665)		(40,272,945)
Total Shareholders' Equity (Deficit)		(40,272,182)	5,000,006	5,000,006			5,000,006		(40,272,182)
CONDENSED STATEMENTS OF OPERATIONS
General and administrative expenses		2,955,246							6,009,359
Loss from operations		(2,955,246)							(6,009,359)
Net income (loss)		$ (137,984)							(5,056,122)
Statement Of Cash Flows Abstarct
Profit Loss									(5,056,122)
Accrued expenses									$ 5,097,013
Change in value of Class A ordinary shares subject to redemption				9,810,764			(4,897,138)
As Previously Reported | Restatement of Redeemable Common Stock As Temporary Equity | Class A ordinary shares | CIK0001815805 BROADSTONE ACQUISITION CORP.
STATEMENT OF FINANCIAL POSITION ABSTRACT
Class A Ordinary Shares subject to possible redemption			260,168,806	274,897,708			260,168,806
Class A ordinary shares			451				451
CONDENSED STATEMENTS OF OPERATIONS
Basic net income (loss) per ordinary share		$ 0							$ (0.13)
Diluted net income (loss) per ordinary share		0							(0.13)
As Previously Reported | Restatement of Redeemable Common Stock As Temporary Equity | Class B ordinary shares | CIK0001815805 BROADSTONE ACQUISITION CORP.
CONDENSED STATEMENTS OF OPERATIONS
Basic net income (loss) per ordinary share		0							(0.13)
Diluted net income (loss) per ordinary share		$ 0							$ (0.13)
Revision Adjustments | CIK0001815805 BROADSTONE ACQUISITION CORP.
STATEMENT OF FINANCIAL POSITION ABSTRACT
Class A ordinary shares					$ (319)	$ (319)		$ (402)		(324)	(320)
Additional paid-in capital					(5,664,191)	(5,664,191)		(13,765,368)		(5,859,953)	(5,711,600)
Accumulated deficit					(26,264,790)	(26,264,790)		(26,450,296)		(26,450,395)	(26,264,790)
Total Shareholders' Equity (Deficit)					$ (31,929,300)	$ (31,929,300)		$ (40,216,066)		$ (32,310,672)	$ (31,976,710)
Revision Adjustments | Class A ordinary shares | CIK0001815805 BROADSTONE ACQUISITION CORP.
CONDENSED STATEMENTS OF OPERATIONS
Basic net income (loss) per ordinary share					$ (0.05)	$ (0.06)		$ (0.39)
Diluted net income (loss) per ordinary share					(0.05)	(0.06)		(0.39)
Revision Adjustments | Class B ordinary shares | CIK0001815805 BROADSTONE ACQUISITION CORP.
CONDENSED STATEMENTS OF OPERATIONS
Basic net income (loss) per ordinary share					(0.04)	(0.05)		0.77
Diluted net income (loss) per ordinary share					$ (0.04)	$ (0.05)		$ 0.77
Revision Adjustments | Restatement of Redeemable Common Stock As Temporary Equity | CIK0001815805 BROADSTONE ACQUISITION CORP.
STATEMENT OF FINANCIAL POSITION ABSTRACT
Accrued expenses		$ (2,334,252)							$ (2,334,252)
Total current liabilities		(2,334,252)							(2,334,252)
Total liabilities		(2,334,252)							(2,334,252)
Class A ordinary shares				(304)
Additional paid-in capital			(18,683,457)	(3,954,702)			(18,683,457)
Accumulated deficit		2,334,252	(26,450,296)	(26,450,296)			(26,450,296)		2,334,252
Total Shareholders' Equity (Deficit)		2,334,252	(45,134,204)	(30,405,302)			(45,134,204)		2,334,252
CONDENSED STATEMENTS OF OPERATIONS
General and administrative expenses		(2,334,252)							(2,334,252)
Loss from operations		2,334,252							2,334,252
Net income (loss)		$ 2,334,252							2,334,252
Statement Of Cash Flows Abstarct
Profit Loss									2,334,252
Accrued expenses									$ (2,334,252)
Change in value of Class A ordinary shares subject to redemption				(9,810,764)			4,897,138
Revision Adjustments | Restatement of Redeemable Common Stock As Temporary Equity | Class A ordinary shares | CIK0001815805 BROADSTONE ACQUISITION CORP.
STATEMENT OF FINANCIAL POSITION ABSTRACT
Class A Ordinary Shares subject to possible redemption			45,134,204	$ 30,405,302			45,134,204
Class A ordinary shares			$ (451)				$ (451)
CONDENSED STATEMENTS OF OPERATIONS
Basic net income (loss) per ordinary share		$ 0.06							$ 0.06
Diluted net income (loss) per ordinary share		0.06							0.06
Revision Adjustments | Restatement of Redeemable Common Stock As Temporary Equity | Class B ordinary shares | CIK0001815805 BROADSTONE ACQUISITION CORP.
CONDENSED STATEMENTS OF OPERATIONS
Basic net income (loss) per ordinary share		0.06							0.06
Diluted net income (loss) per ordinary share		$ 0.06							$ 0.06

Summary of Significant Accoun_4

Summary of Significant Accounting Policies (Details) - CIK0001815805 BROADSTONE ACQUISITION CORP. - USD ($)	2 Months Ended	3 Months Ended				5 Months Ended	8 Months Ended	9 Months Ended
	Jun. 30, 2020	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2020	Sep. 30, 2020	Dec. 31, 2020	Sep. 30, 2021
Subsidiary, Sale of Stock [Line Items]
Cash equivalents held in Trust Account		$ 305,332,346					$ 305,311,303	$ 305,332,346
Net Asset Value Per Share		$ 1					$ 1	$ 1
Federal Deposit Insurance Company coverage		$ 250,000						$ 250,000
Unrecognized tax benefits		0					$ 0	0
Amounts accrued for the payment of interest and penalties		0					$ 0	0
Income tax expense (benefit)								$ 0
Earnings Per Share [Abstract]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount							23,371,211	23,371,211
Investment income earned in Trust Account		4,611			$ 2,200	$ 2,200	$ 8,293	$ 21,043
Net Income (Loss) Attributable to Parent	$ (10,732)	2,196,268	$ (14,728,902)	$ 9,810,764	(654,632)	(665,364)	(8,766,527)	(2,721,870)
General and administrative expenses		$ 620,994			$ 732,832	$ 743,564	922,064	$ 3,675,107
IPO
Earnings Per Share [Abstract]
General and administrative expenses							677,570
Offering costs charged to stockholder's equity							$ 16,173,600
Class A ordinary shares
Subsidiary, Sale of Stock [Line Items]
Share subject to possible redemption (in shares)		30,530,301					30,530,301	30,530,301
Public Warrants | Class A ordinary shares
Earnings Per Share [Abstract]
Proceeds allocated to common stock							$ 16,935,163
Private Placement Warrants | Class A ordinary shares
Earnings Per Share [Abstract]
Proceeds allocated to common stock							$ 1,654,167

Summary of Significant Accoun_5

Summary of Significant Accounting Policies - Net Income (Loss) Per Ordinary Share (Details) - USD ($)	3 Months Ended		5 Months Ended	8 Months Ended	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2020	Dec. 31, 2020	Sep. 30, 2021
Class A ordinary shares
Denominator:
Weighted average ordinary shares outstanding, Diluted	30,530,301	5,309,618	3,404,255		30,530,301
Basic net income (loss) per ordinary share	$ 0.06	$ (0.05)			$ (0.07)
Diluted income (loss) per ordinary share			$ (0.06)
Class A ordinary shares | CIK0001815805 BROADSTONE ACQUISITION CORP.
Numerator:
Allocation of net income (loss), as adjusted	$ 1,757,014	$ (246,740)	$ (194,223)	$ (5,596,126)	$ (2,177,496)
Denominator:
Weighted Average Number of Shares Outstanding, Basic and Diluted		5,217,391	3,404,255
Weighted average ordinary shares outstanding, Basic	30,530,301	5,309,618	3,404,255	14,320,851	30,530,301
Weighted average ordinary shares outstanding, Diluted	30,530,301	5,309,618	3,247,904	14,320,851	30,530,301
Basic net income (loss) per ordinary share	$ 0.06	$ (0.05)	$ (0.06)	$ (0.39)	$ (0.07)
Diluted income (loss) per ordinary share	$ 0.06	$ (0.05)	$ (0.06)	$ (0.39)	$ (0.07)
Class A ordinary shares | CIK0001815805 BROADSTONE ACQUISITION CORP. | As Previously Reported
Denominator:
Weighted average ordinary shares outstanding, Basic		30,000,000	30,000,000	30,387,905
Weighted average ordinary shares outstanding, Diluted		30,000,000	30,000,000	30,387,905
Basic net income (loss) per ordinary share		$ 0	$ 0	$ 0
Diluted income (loss) per ordinary share		$ 0	$ 0	$ 0
Class B ordinary shares
Denominator:
Weighted average ordinary shares outstanding, Diluted	7,632,575	8,625,000	8,255,357		7,632,575
Basic net income (loss) per ordinary share	$ 0.06	$ (0.05)			$ (0.07)
Diluted income (loss) per ordinary share			$ (0.06)
Class B ordinary shares | CIK0001815805 BROADSTONE ACQUISITION CORP.
Numerator:
Allocation of net income (loss), as adjusted	$ 439,254	$ (407,892)	$ (471,141)	$ (3,170,401)	$ (544,374)
Denominator:
Weighted Average Number of Shares Outstanding, Basic and Diluted		8,625,000	8,255,357
Weighted average ordinary shares outstanding, Basic	7,632,575	8,625,000	8,255,357	8,113,263	7,632,575
Weighted average ordinary shares outstanding, Diluted	7,632,575	8,625,000	8,255,357	8,113,263	7,632,575
Basic net income (loss) per ordinary share	$ 0.06	$ (0.05)	$ (0.06)	$ (0.39)	$ (0.07)
Diluted income (loss) per ordinary share	$ 0.06	$ (0.05)	$ (0.06)	$ (0.39)	$ (0.07)
Class B ordinary shares | CIK0001815805 BROADSTONE ACQUISITION CORP. | As Previously Reported
Denominator:
Weighted average ordinary shares outstanding, Basic		8,625,000	8,625,000	7,539,714
Weighted average ordinary shares outstanding, Diluted		8,625,000	8,625,000	7,539,714
Basic net income (loss) per ordinary share		$ (0.01)	$ (0.01)	$ (1.16)
Diluted income (loss) per ordinary share		$ (0.01)	$ (0.01)	$ (1.16)

Initial Public Offering (Detail

Initial Public Offering (Details) - CIK0001815805 BROADSTONE ACQUISITION CORP. - USD ($)	Oct. 14, 2020	Sep. 15, 2020	Sep. 30, 2020	Dec. 31, 2020	Sep. 30, 2021
Subsidiary, Sale of Stock [Line Items]
Offering cost			$ 5,923,016	$ 6,029,077
Deferred underwriting commissions				$ 10,685,605	$ 10,685,605
Number of warrants in a unit		0.33
Class A ordinary shares
Subsidiary, Sale of Stock [Line Items]
Common stock, par value				$ 0.0001	$ 0.0001
Number of shares in a unit		1
IPO
Subsidiary, Sale of Stock [Line Items]
Number of shares issued		30,000,000
Share price		$ 10		$ 10	10
Gross proceeds	$ 5,300,000	$ 300,000,000		$ 305,300,000
Offering cost	292,000	16,600,000		$ 16,935,162
Deferred underwriting commissions	$ 186,000	$ 10,500,000
IPO | Class A ordinary shares
Subsidiary, Sale of Stock [Line Items]
Share price				$ 10
Common stock, par value				$ 0.0001	$ 0.0001
Number of shares in a unit				1	1
Number of warrants in a unit				1	0.5
Number of shares per warrant				1	1
Exercise price of warrants (in dollars per share)				$ 11.50	$ 11.50

Related Party Transactions - Fo

Related Party Transactions - Founder share (Details) - CIK0001815805 BROADSTONE ACQUISITION CORP.	Oct. 25, 2020shares	Oct. 14, 2020shares	May 19, 2020USD ($)D$ / sharesshares	Jun. 30, 2020USD ($)	Dec. 31, 2020USD ($)$ / shares	Sep. 30, 2021$ / shares
Related Party Transaction [Line Items]
Aggregate purchase price | $				$ 25,000	$ 25,000
Class B ordinary shares
Related Party Transaction [Line Items]
Shares forfeited	992,425
Ordinary shares, par value | $ / shares					$ 0.0001	$ 0.0001
Common stock, shares subject to forfeiture, as a percent of issued and outstanding shares (as a percent)					20.00%
Class B ordinary shares | Founder | Sponsor
Related Party Transaction [Line Items]
Aggregate purchase price | $			$ 25,000
Share price | $ / shares			$ 0.003
Number of shares agreed to issue			8,625,000
Ordinary shares, par value | $ / shares			$ 0.0001
Maximum shares subject to forfeiture			1,125,000
Percentage of issued and outstanding shares after the Initial Public Offering collectively held by initial stockholders			20.00%
Threshold period for not to transfer, assign or sell any of their shares or warrants after the completion of the initial business combination			1 year
Stock price trigger to transfer, assign or sell any shares or warrants of the company, after the completion of the initial business combination (in dollars per share) | $ / shares			$ 12
Threshold trading days for transfer, assign or sale of shares or warrants, after the completion of the initial business combination | D			20
Threshold consecutive trading days for transfer, assign or sale of shares or warrants, after the completion of the initial business combination | D			30
Threshold period after the business combination in which the 20 trading days within any 30 trading day period commences			150 days
Over-allotment option
Related Party Transaction [Line Items]
Number of shares agreed to issue		530,301
Over-allotment option | Class B ordinary shares
Related Party Transaction [Line Items]
Number of shares agreed to issue		530,301

Related Party Transactions - Pr

Related Party Transactions - Private placement warrants (Details) - Private Placement - CIK0001815805 BROADSTONE ACQUISITION CORP. - USD ($)	Oct. 14, 2020	Sep. 15, 2020	May 19, 2020
Related Party Transaction [Line Items]
Number of warrants to purchase the shares issued (in shares)	106,060	8,000,000	8,000,000
Price of warrants (in dollars per share)			$ 1
Proceeds from Issuance of Warrants	$ 106,060	$ 8,000,000	$ 8,000,000
Threshold Period For Not To Transfer, Assign Or Sell Any Shares Or Warrants After Completion Of Initial Business Combination			30 days
Class A ordinary shares
Related Party Transaction [Line Items]
Number of shares issuable per warrant (in shares)			1
Exercise price of warrants (in dollars per share)		$ 11.50	$ 11.50

Related Party Transactions - Sp

Related Party Transactions - Sponsor loan, Working capital loans, Administrative support agreement (Details) - CIK0001815805 BROADSTONE ACQUISITION CORP. - USD ($)	May 19, 2020	Sep. 30, 2021	Dec. 31, 2020	Sep. 30, 2021
Related Party Transaction [Line Items]
Borrowings outstanding		$ 0	$ 0	$ 0
Accrued expenses		2,762,980	219	2,762,980
Sponsor
Related Party Transaction [Line Items]
Maximum borrowing capacity of related party promissory note	$ 300,000
Proceeds from related party loan	133,000
Working Capital Loans
Related Party Transaction [Line Items]
Maximum loans convertible into warrants	$ 1,500,000
Price of warrants (in dollars per share)	$ 1
Outstanding balance of related party note		0	0	0
Administrative Support Agreement
Related Party Transaction [Line Items]
Expenses per month		10,000	10,000	10,000
Administrative Support Agreement | Accounts Payable [Member]
Related Party Transaction [Line Items]
Amount available for borrowings				30,000
Administrative Support Agreement | General and Administrative Expense [Member]
Related Party Transaction [Line Items]
Amount available for borrowings		$ 30,000	$ 37,000	$ 90,000

Commitments and Contingencies (

Commitments and Contingencies (Details) - CIK0001815805 BROADSTONE ACQUISITION CORP.	Oct. 26, 2021USD ($)	Jun. 10, 2021USD ($)$ / sharesshares	Oct. 14, 2020USD ($)shares	Sep. 15, 2020shares	Dec. 31, 2020USD ($)item$ / sharesshares	Sep. 30, 2021USD ($)item$ / sharesshares
Subsidiary, Sale of Stock [Line Items]
Maximum number of demands for registration of securities | item					3	3
Percentage of outstanding shares that will be exchanged upon effectiveness of the Merger		100.00%
Cash underwriting discount per unit | $ / shares					$ 0.20	$ 0.20
Payment of underwriter discount					$ 100,000	$ 100,000
Reimbursement of certain expenses					$ 390,000	$ 390,000
Deferred fee per unit | $ / shares					$ 0.35	$ 0.35
Deferred underwriting fee payable					$ 10,700,000	$ 10,700,000
Deferred underwriting commissions					10,685,605	10,685,605
Cash underwriting discount paid					$ 6,000,000	$ 6,000,000
Subscription Agreements [Member] | PIPE Investors [Member]
Subsidiary, Sale of Stock [Line Items]
Number of shares agreed to issue | shares		9,400,000
Common stock, par value | $ / shares		$ 0.0001
Price per share | $ / shares		$ 10
Proceeds from Issuance of Common Stock		$ 94,000,000
Convertible Senior Secured Notes Subscription Agreement
Subsidiary, Sale of Stock [Line Items]
Aggregate principal amount	$ 200,000,000
Cash interest rate (as a percent)	7.00%
Paid-in-kind interest rate (as a percent)	9.00%
Class of Warrant or Right, Number of Securities Called by Warrants or Rights | shares						4,000,000
Number of shares per warrant | shares						1
Exercise price | $ / shares						$ 11.50
Over-allotment option
Subsidiary, Sale of Stock [Line Items]
Underwriting option period					45 days	45 days
Sale of units in initial public offering, gross (in shares ) | shares				4,500,000	4,500,000	4,500,000
Number of shares agreed to issue | shares			530,301
Deferred underwriting commissions			$ 186,000
Class A ordinary shares
Subsidiary, Sale of Stock [Line Items]
Common stock, par value | $ / shares					$ 0.0001	$ 0.0001
Class B ordinary shares
Subsidiary, Sale of Stock [Line Items]
Common stock, par value | $ / shares					$ 0.0001	$ 0.0001
Class B ordinary shares | Over-allotment option
Subsidiary, Sale of Stock [Line Items]
Number of shares agreed to issue | shares			530,301

Shareholders' Equity - Preferre

Shareholders' Equity - Preferred Stock (Details) - CIK0001815805 BROADSTONE ACQUISITION CORP. - $ / shares	Sep. 30, 2021	Dec. 31, 2020
Preferred Stock, Shares Authorized	1,000,000	1,000,000
Preferred stock, par value	$ 0.0001	$ 0.0001
Preferred Stock, Shares Issued	0	0
Preferred Stock, Shares Outstanding	0	0

Shareholders' Equity - Common S

Shareholders' Equity - Common Stock (Details) - CIK0001815805 BROADSTONE ACQUISITION CORP. - $ / shares	Oct. 25, 2020	Dec. 31, 2020	Sep. 30, 2021	Dec. 31, 2020
Class of Stock [Line Items]
Number of Class A common stock issued upon conversion of each share (in shares)		1	1
Class A ordinary shares
Class of Stock [Line Items]
Common stock, shares authorized		200,000,000	200,000,000	200,000,000
Common stock, par value		$ 0.0001	$ 0.0001	$ 0.0001
Common stock, shares issued		0	0	0
Common stock, shares outstanding		0	0	0
Common Stock Shares Outstanding Including Temporary Equity			30,530,301	30,530,301
Common Stock Shares Issued Including Temporary Equity		30,530,301	30,530,301	30,530,301
Temporary Equity, Shares Outstanding		30,530,301	30,530,301	30,530,301
Class B ordinary shares
Class of Stock [Line Items]
Common stock, shares authorized		20,000,000	20,000,000	20,000,000
Common stock, par value		$ 0.0001	$ 0.0001	$ 0.0001
Common stock, number of votes per share		$ 1	$ 1	$ 1
Shares forfeited	992,425
Common stock, shares issued		7,632,575	7,632,575	7,632,575
Common stock, shares outstanding		7,632,575	7,632,575	7,632,575
Common stock, shares subject to forfeiture, as a percent of issued and outstanding shares (as a percent)		20.00%		20.00%
Number of common stock issuable pursuant to Initial Business Combination, as a percent of outstanding shares (in shares)		20.00%	20.00%

Warrant Liabilities (Details)

Warrant Liabilities (Details) - CIK0001815805 BROADSTONE ACQUISITION CORP. - $ / shares	8 Months Ended	9 Months Ended
	Dec. 31, 2020	Sep. 30, 2021	Sep. 15, 2020
Class of Warrant or Right [Line Items]
Threshold trading days for calculating volume-weighted average price	10 days	10 days
Maximum redemption feature per warrant	0.361	0.361
Class A ordinary shares
Class of Warrant or Right [Line Items]
Threshold minimum percentage of gross proceeds on total equity proceeds (as a percent)	60.00%	60.00%
Threshold trading days for calculating Market Value	10 days	10 days
Maximum [Member] | Class A ordinary shares
Class of Warrant or Right [Line Items]
Newly Issued Price (in dollars per share)	$ 9.20	$ 9.20
Public Warrants
Class of Warrant or Right [Line Items]
Exercise price of warrants (in dollars per share)	$ 11.50	$ 11.50	$ 0.796
Warrants exercisable term after the completion of a business combination	30 days	30 days
Warrants exercisable term from the closing of the public offering	12 months	12 months
Threshold maximum period for filing registration statement after business combination	15 days	15 days
Threshold maximum period for registration statement to become effective after business combination	60 days	60 days
Warrant expiry term	5 years	5 years
Public Warrants | Redemption of Warrants when price per share of Class A common stock equals or exceeds $18.00
Class of Warrant or Right [Line Items]
Redemption price per warrant (in dollars per share)	$ 0.01	$ 0.01
Minimum threshold written notice period for redemption of public warrants	30 days	30 days
Stock price trigger for redemption of warrants (in dollars per share)	$ 18	$ 18
Threshold trading days for redemption of warrants	20 days	20 days
Threshold consecutive trading days for redemption of warrants	30 days	30 days
Newly Issued Price (in dollars per share)	$ 18
Adjustment of exercise price of warrants based on market value and newly issued price (as a percent)	115.00%	115.00%
Public Warrants | Redemption of Warrants when price per share of Class A common stock equals or exceeds $10.00
Class of Warrant or Right [Line Items]
Redemption price per warrant (in dollars per share)	$ 0.10	$ 0.10
Minimum threshold written notice period for redemption of public warrants		30 days
Stock price trigger for redemption of warrants (in dollars per share)	$ 10	$ 10
Threshold trading days for redemption of warrants		20 days
Threshold consecutive trading days for redemption of warrants	30 days	30 days
Threshold number of trading days before sending notice of redemption to warrant holders	30 days	3 days
Adjustment of exercise price of warrants based on market value and newly issued price (as a percent)	180.00%	180.00%
Private Placement Warrants
Class of Warrant or Right [Line Items]
Exercise price of warrants (in dollars per share)			$ 0.797
Threshold period for not to transfer, assign or sell any of their shares or warrants after the completion of the initial business combination		30 days
Private Placement Warrants | Redemption of Warrants when price per share of Class A common stock is less than $18.00
Class of Warrant or Right [Line Items]
Stock price trigger for redemption of warrants (in dollars per share)	$ 18	$ 18
Threshold trading days for redemption of warrants	20 days	20 days
Threshold consecutive trading days for redemption of warrants	30 days	30 days

Fair Value Measurements (Detail

Fair Value Measurements (Details) - CIK0001815805 BROADSTONE ACQUISITION CORP. - USD ($)	Sep. 30, 2021	Dec. 31, 2020
Fair Value Measurements
Marketable securities held in the Trust Account	$ 305,332,346	$ 305,311,303
Warrant liabilities	25,240,908	26,175,756
Level 1
Fair Value Measurements
Marketable securities held in the Trust Account	305,332,346	305,311,303
Level 1 | Recurring
Fair Value Measurements
Marketable securities held in the Trust Account		305,311,303
Private Placement Warrants | Level 2
Fair Value Measurements
Warrant liabilities	8,754,545	9,078,787
Private Placement Warrants | Level 2 | Recurring
Fair Value Measurements
Warrant liabilities		9,078,787
Public Warrants | Level 1
Fair Value Measurements
Warrant liabilities	$ 16,486,363	17,096,969
Public Warrants | Level 1 | Recurring
Fair Value Measurements
Warrant liabilities		$ 17,096,969

Fair Value Measurements - Chang

Fair Value Measurements - Changes in the fair value of warrant liabilities (Details) - CIK0001815805 BROADSTONE ACQUISITION CORP. - USD ($)	8 Months Ended	9 Months Ended
	Dec. 31, 2020	Sep. 30, 2021	Sep. 15, 2020
Fair Value Measurements
Fair value as of December 31, 2020		$ 26,175,756
Initial measurement on September 15, 2020	$ 18,323,000
Initial measurement on October 14, 2020	293,362
Change in valuation inputs or other assumptions(1)	7,559,394	(934,848)
Fair value as of September 30, 2021	26,175,756	25,240,908
Private Placement Warrants
Fair Value Measurements
Fair value as of December 31, 2020		9,078,787
Initial measurement on September 15, 2020	6,368,000
Initial measurement on October 14, 2020	83,893
Change in valuation inputs or other assumptions(1)	2,626,894	(324,242)
Fair value as of September 30, 2021	9,078,787	8,754,545
Warrants and Rights Outstanding	9,100,000	8,800,000	$ 6,400,000
Public Warrants
Fair Value Measurements
Fair value as of December 31, 2020		17,096,969
Initial measurement on September 15, 2020	11,955,000
Initial measurement on October 14, 2020	209,469
Change in valuation inputs or other assumptions(1)	4,932,500	(610,606)
Fair value as of September 30, 2021	17,096,969	16,486,363
Warrants and Rights Outstanding	$ 17,100,000	$ 16,500,000	$ 12,000,000

BALANCE SHEET

BALANCE SHEET - CIK0001815805 BROADSTONE ACQUISITION CORP. - USD ($)	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Oct. 14, 2020	Sep. 30, 2020	Sep. 15, 2020	Jun. 30, 2020	May 12, 2020
Current assets:
Cash	$ 707,084			$ 1,605,045
Prepaid expenses	95,417			187,865
Total current assets	802,501			1,792,910
Investment held in Trust Account	305,332,346			305,311,303
Total Assets	306,134,847			307,104,213
Current liabilities:
Accounts payable	80,274			155,683
Accrued expenses	2,762,980			219
Total current liabilities	2,843,254			155,902
Warrant liability	25,240,908			26,175,756
Deferred underwriting commissions	10,685,605			10,685,605
Total liabilities	38,769,767			37,017,263
Commitments and Contingencies
Shareholders' deficit
Preference shares, $0.0001 par value 1,000,000 shares authorized none issued and outstanding
Accumulated deficit	(37,938,693)	$ (40,134,961)	$ (25,406,059)	(35,216,823)	$ (27,366,562)	$ (26,930,154)	$ (26,977,565)
Total shareholders' deficit	(37,937,930)	(40,134,198)	(25,405,296)	(35,216,060)	$ (27,310,669)	$ (26,929,291)	$ (26,976,702)	$ 14,268	$ 0
Total Liabilities, Class A Ordinary Shares Subject to Possible Redemption and Shareholders' Deficit	306,134,847			307,104,213
Class A ordinary shares
Current liabilities:
Class A ordinary shares; 30,530,301 shares subject to possible redemption at $10 per share as of September 30, 2021 and December 31, 2020	305,303,010	$ 305,303,010	$ 305,303,010	305,303,010
Class A Redeemable Common Stock
Current liabilities:
Class A ordinary shares; 30,530,301 shares subject to possible redemption at $10 per share as of September 30, 2021 and December 31, 2020				305,303,010
Class B ordinary shares
Shareholders' deficit
Common Stock	$ 763			$ 763

BALANCE SHEET (Parenthetical)

BALANCE SHEET (Parenthetical) - CIK0001815805 BROADSTONE ACQUISITION CORP. - $ / shares	Sep. 30, 2021	Dec. 31, 2020
Preferred stock, par value	$ 0.0001	$ 0.0001
Preferred stock, shares authorized	1,000,000	1,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Class A ordinary shares
Share subject to possible redemption (in shares)	30,530,301	30,530,301
Redemption Price	$ 10	$ 10
Common stock, par value	$ 0.0001	$ 0.0001
Common stock, shares authorized	200,000,000	200,000,000
Common stock, shares issued	0	0
Common stock, shares outstanding	0	0
Class A Redeemable Common Stock
Share subject to possible redemption (in shares)		30,530,301
Non Redeemable ordinary shares
Common stock, par value		$ 0.0001
Common stock, shares authorized		200,000,000
Common stock, shares issued		0
Common stock, shares outstanding		0
Class B ordinary shares
Common stock, par value	$ 0.0001	$ 0.0001
Common stock, shares authorized	20,000,000	20,000,000
Common stock, shares issued	7,632,575	7,632,575
Common stock, shares outstanding	7,632,575	7,632,575

STATEMENTS OF OPERATIONS

STATEMENTS OF OPERATIONS - USD ($)	2 Months Ended	3 Months Ended				5 Months Ended	8 Months Ended	9 Months Ended
	Jun. 30, 2020	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2020	Sep. 30, 2020	Dec. 31, 2020	Sep. 30, 2021
CIK0001815805 BROADSTONE ACQUISITION CORP.
General and administrative expenses		$ 620,994			$ 732,832	$ 743,564	$ 922,064	$ 3,675,107
Loss from operations		(620,994)			(732,832)	(743,564)	(922,064)	(3,675,107)
Other income (expense):
Income earned on investments in Trust Account		4,611			2,200	2,200	8,293	21,043
Change in fair value of warrant liabilities		2,812,651			76,000	76,000	(7,852,756)	934,848
Foreign exchange gain/(loss)								2,654
Total other income (expense), net		2,817,262			78,200	78,200	(7,844,463)	953,237
Net income (loss)	$ (10,732)	$ 2,196,268	$ (14,728,902)	$ 9,810,764	$ (654,632)	$ (665,364)	$ (8,766,527)	$ (2,721,870)
Class A ordinary shares
Other income (expense):
Weighted average ordinary shares outstanding, Diluted		30,530,301			5,309,618	3,404,255		30,530,301
Basic net income (loss) per ordinary share		$ 0.06			$ (0.05)			$ (0.07)
Diluted net income (loss) per ordinary share						$ (0.06)
Class A ordinary shares | CIK0001815805 BROADSTONE ACQUISITION CORP.
Other income (expense):
Weighted average ordinary shares outstanding, Basic		30,530,301			5,309,618	3,404,255	14,320,851	30,530,301
Weighted average ordinary shares outstanding, Diluted		30,530,301			5,309,618	3,247,904	14,320,851	30,530,301
Basic net income (loss) per ordinary share		$ 0.06			$ (0.05)	$ (0.06)	$ (0.39)	$ (0.07)
Diluted net income (loss) per ordinary share		$ 0.06			$ (0.05)	$ (0.06)	$ (0.39)	$ (0.07)
Class B ordinary shares
Other income (expense):
Weighted average ordinary shares outstanding, Diluted		7,632,575			8,625,000	8,255,357		7,632,575
Basic net income (loss) per ordinary share		$ 0.06			$ (0.05)			$ (0.07)
Diluted net income (loss) per ordinary share						$ (0.06)
Class B ordinary shares | CIK0001815805 BROADSTONE ACQUISITION CORP.
Other income (expense):
Weighted average ordinary shares outstanding, Basic		7,632,575			8,625,000	8,255,357	8,113,263	7,632,575
Weighted average ordinary shares outstanding, Diluted		7,632,575			8,625,000	8,255,357	8,113,263	7,632,575
Basic net income (loss) per ordinary share		$ 0.06			$ (0.05)	$ (0.06)	$ (0.39)	$ (0.07)
Diluted net income (loss) per ordinary share		$ 0.06			$ (0.05)	$ (0.06)	$ (0.39)	$ (0.07)

STATEMENT OF CHANGES IN SHAREHO

STATEMENT OF CHANGES IN SHAREHOLDERS' EQUITY - CIK0001815805 BROADSTONE ACQUISITION CORP. - USD ($)	Ordinary SharesClass A ordinary shares	Ordinary SharesClass B ordinary shares	Additional Paid-in Capital	Retained Earnings [Member]	Class A Redeemable Common Stock	Total
Balance at the beginning at May. 12, 2020	$ 0	$ 0	$ 0	$ 0		$ 0
Balance at the beginning (in shares) at May. 12, 2020	0	0
Issuance of Class B ordinary shares to Sponsor		$ 863	24,137			25,000
Issuance of Class B ordinary shares to Sponsor (in shares)		8,625,000
Net loss				(10,732)		(10,732)
Balance at the ending at Jun. 30, 2020		$ 863	24,137	(10,732)		14,268
Balance at the ending (in shares) at Jun. 30, 2020		8,625,000
Balance at the beginning at May. 12, 2020	$ 0	$ 0	0	0		0
Balance at the beginning (in shares) at May. 12, 2020	0	0
Net loss						(665,364)
Balance at the ending at Sep. 30, 2020		$ 863		(26,930,154)		(26,929,291)
Balance at the ending (in shares) at Sep. 30, 2020		8,625,000
Balance at the beginning at May. 12, 2020	$ 0	$ 0	0	0		0
Balance at the beginning (in shares) at May. 12, 2020	0	0
Issuance of Class B ordinary shares to Sponsor		$ 863	24,137			25,000
Issuance of Class B ordinary shares to Sponsor (in shares)		8,625,000
Excess of cash received over fair value of private placement warrants			1,654,167			1,654,167
Forfeited Class B ordinary shares		$ (100)				(100)
Forfeited of Class B ordinary shares (in shares)		(992,425)
Accretion of Class A ordinary Shares to redemption amount			(1,678,304)	(26,450,296)	$ 28,128,600	(28,128,600)
Net loss				(8,766,527)		(8,766,527)
Balance at the ending at Dec. 31, 2020		$ 763		(35,216,823)		(35,216,060)
Balance at the ending (in shares) at Dec. 31, 2020		7,632,575
Balance at the beginning at Jun. 30, 2020		$ 863	24,137	(10,732)		14,268
Balance at the beginning (in shares) at Jun. 30, 2020		8,625,000
Excess of cash received over fair value of private placement warrants			1,654,167			1,654,167
Accretion of Class A ordinary Shares to redemption amount			$ (1,678,304)	(26,264,790)		(27,943,094)
Net loss				(654,632)		(654,632)
Balance at the ending at Sep. 30, 2020		$ 863		(26,930,154)		(26,929,291)
Balance at the ending (in shares) at Sep. 30, 2020		8,625,000
Balance at the beginning at Dec. 31, 2020		$ 763		(35,216,823)		(35,216,060)
Balance at the beginning (in shares) at Dec. 31, 2020		7,632,575
Net loss				9,810,764		9,810,764
Balance at the ending at Mar. 31, 2021		$ 763		(25,406,059)		(25,405,296)
Balance at the ending (in shares) at Mar. 31, 2021		7,632,575
Balance at the beginning at Dec. 31, 2020		$ 763		(35,216,823)		(35,216,060)
Balance at the beginning (in shares) at Dec. 31, 2020		7,632,575
Net loss						(2,721,870)
Balance at the ending at Sep. 30, 2021		$ 763		(37,938,693)		(37,937,930)
Balance at the ending (in shares) at Sep. 30, 2021		7,632,575
Balance at the beginning at Mar. 31, 2021		$ 763		(25,406,059)		(25,405,296)
Balance at the beginning (in shares) at Mar. 31, 2021		7,632,575
Net loss				(14,728,902)		(14,728,902)
Balance at the ending at Jun. 30, 2021		$ 763		(40,134,961)		(40,134,198)
Balance at the ending (in shares) at Jun. 30, 2021		7,632,575
Net loss				2,196,268		2,196,268
Balance at the ending at Sep. 30, 2021		$ 763		$ (37,938,693)		$ (37,937,930)
Balance at the ending (in shares) at Sep. 30, 2021		7,632,575

STATEMENT OF CASH FLOWS

STATEMENT OF CASH FLOWS - CIK0001815805 BROADSTONE ACQUISITION CORP. - USD ($)	3 Months Ended		5 Months Ended	8 Months Ended	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2020	Dec. 31, 2020	Sep. 30, 2021
Cash Flows from Operating Activities:
Profit Loss			$ (665,364)	$ (8,766,527)	$ (2,721,870)
Adjustments to reconcile net loss to net cash used in operating activities:
Income earned on investments in Trust Account	$ (4,611)	$ (2,200)	(2,200)	(8,293)	(21,043)
General and administrative expenses funded with note payable to related party			12,232	12,232
Change in fair value of warrant liabilities	(2,812,651)	(76,000)	(76,000)	7,852,756	(934,848)
Transactions allocated to warrant liabilities			677,570	677,570
Changes in operating assets and liabilities:
Prepaid expenses			(225,767)	(187,865)	92,488
Accounts payable			16,194	155,683	(75,409)
Accrued expenses			2,300	(74,781)	2,762,761
Net cash used in operating activities			(261,035)	(339,225)	(897,961)
Cash Flows from Investing Activities:
Cash deposited in Trust Account			(300,000,000)	(305,303,010)
Net cash used in investing activities			(300,000,000)	(305,303,010)
Cash Flows from Financing Activities:
Repayment of note payable to related party			(132,713)	(132,713)
Proceeds received from initial public offering, gross			300,000,000	305,303,010
Proceeds received from private placement			8,000,000	8,106,060
Offering costs paid			(5,923,016)	(6,029,077)
Net cash provided by financing activities			301,994,271	307,247,280
Net change in cash			1,733,236	1,605,045	(897,961)
Cash - beginning of the period			0	0	1,605,045
Cash - ending of the period	$ 707,084	$ 1,683,236	1,683,236	1,605,045	$ 707,084
Supplemental disclosure of non-cash investing and financing activities:
Offering costs paid in exchange for issuance of Class B ordinary shares to sponsor			25,000	25,000
Offering costs included in accrued expenses			75,000	75,000
Offering costs included in note payable			120,481	120,481
Deferred underwriting commissions			10,500,000	10,685,605
Initial measurement of warrants issued in connection with initial public offering and private placement accounted for as liabilities			$ 18,323,000	$ 18,620,362

Description of Organization, _3

Description of Organization, Business Operations and Basis of Presentation	8 Months Ended	9 Months Ended
	Dec. 31, 2020	Sep. 30, 2021
CIK0001815805 BROADSTONE ACQUISITION CORP.
Description of Organization, Business Operations and Basis of Presentation	Note 1—Description of Organization, Business Operations and Basis of Presentation Broadstone Acquisition Corp. (the “Company”) is a blank check company incorporated as a Cayman Islands exempted company on May 13, 2020. The Company was incorporated for the purpose of effecting a merger, share exchange, asset acquisition, share purchase, reorganization or similar business combination with one or more businesses that the Company has not yet identified (“Business Combination”). The Company is an emerging growth company and, as such, the Company is subject to all of the risks associated with emerging growth companies. As of December 31, 2020, the Company had not commenced any operations. All activity for the period from May 13, 2020 (inception) through December 31, 2020 relates to the Company’s formation and the initial public offering (“Initial Public Offering”) and since the closing of the Initial Public Offering, the search for a prospective initial Business Combination. The Company will not generate any operating revenues until after the completion of its initial Business Combination, at the earliest. The Company will generate non-operating income in the form of interest income on cash and cash equivalents from the proceeds derived from the Initial Public Offering. The Company has selected December 31 as its fiscal year end. The Company’s sponsor is Broadstone Sponsor LLP, a United Kingdom limited liability partnership (the “Sponsor”). The registration statement for the Initial Public Offering was declared effective on September 10, 2020. On September 15, 2020, the Company consummated the Initial Public Offering of 30,000,000 units (the “Units” and, with respect to the Class A ordinary shares included in the Units, the “Public Shares”), at $10.00 per Unit, generating gross proceeds of $300.0 million, and incurring offering costs of approximately $16.6 million, inclusive of approximately $10.5 million in deferred underwriting commissions (Note 5). The Company granted the underwriters in the Initial Public Offering a 45-day option to purchase up to 4,500,000 additional Units to cover over-allotments, if any. On October 14, 2020, the underwriters partially exercised the over-allotment option to purchase an additional 530,301 units (the “Over-Allotment Units”). On October 14, 2020, the Company completed the sale of the Over-Allotment Units to underwriters (the “Over-Allotment”), generating gross proceeds of approximately $5.3 million, and incurred additional offering costs of approximately $292,000 in underwriting fees (inclusive of approximately $186,000 in deferred underwriting commissions). Simultaneously with the closing of the Initial Public Offering, the Company consummated the private placement (“Private Placement”) of 8,000,000 warrants (each, a “Private Placement Warrant” and collectively, the “Private Placement Warrants”) to the Sponsor, each exercisable to purchase one Class A ordinary share at $11.50 per share, at a price of $1.00 per Private Placement Warrant, generating gross proceeds to the Company of approximately $8.0 million (Note 4). Simultaneously with the closing of the Over-Allotment Units, on October 14, 2020, the Company consummated the second closing of the Private Placement, resulting in the purchase of an aggregate of an additional 106,060 Private Placement Warrants by the Sponsor, generating gross proceeds to the Company of approximately $106,060. Upon the closing of the Initial Public Offering, the Over-Allotment and the Private Placement, $305.3 million ($10.00 per Unit) of the net proceeds of the Initial Public Offering and certain of the proceeds of the Private Placement were placed in a non-interest bearing trust account (“Trust Account”) located in the United States with Continental Stock Transfer & Trust Company acting as trustee. The net proceeds are not yet invested. If, in the future, the proceeds are held in an interest-bearing account, then the net proceeds may be invested only in United States “government securities” within the meaning of Section 2(a)(16) of the Investment Company Act of 1940, as amended, (the “Investment Company Act”) having a maturity of 185 days or less or in money market funds meeting certain conditions under Rule 2a-7 promulgated under the Investment Company Act which invest only in direct U.S. government treasury obligations, until the earlier of: (i) the completion of a Business Combination and (ii) the distribution of the Trust Account as described below. The Company’s management has broad discretion with respect to the specific application of the net proceeds of the Initial Public Offering and the sale of Private Placement Warrants, although substantially all of the net proceeds are intended to be applied generally toward consummating a Business Combination. There is no assurance that the Company will be able to complete a Business Combination successfully. The Company must complete one or more initial Business Combinations having an aggregate fair market value of at least 80% of the assets held in the Trust Account (as defined below) (excluding the deferred underwriting commissions and taxes payable on income earned on the Trust Account) at the time of the agreement to enter into the initial Business Combination. However, the Company will only complete a Business Combination if the post-transaction company owns or acquires 50% or more of the outstanding voting securities of the target or otherwise acquires a controlling interest in the target sufficient for it not to be required to register as an investment company under the Investment Company Act. The Company will provide holders (the “Public Shareholders”) of its Class A ordinary shares, par value $0.0001, sold in the Initial Public Offering (the “Public Shares”), with the opportunity to redeem all or a portion of their Public Shares upon the completion of a Business Combination either (i) in connection with a shareholder meeting called to approve the Business Combination or (ii) by means of a tender offer. The decision as to whether the Company will seek shareholder approval of a Business Combination or conduct a tender offer will be made by the Company, solely in its discretion. The Public Shareholders will be entitled to redeem their Public Shares for a pro rata portion of the amount then in the Trust Account (initially anticipated to be $10.00 per Public Share). The per-share amount to be distributed to Public Shareholders who redeem their Public Shares will not be reduced by the deferred underwriting commissions the Company will pay to the underwriters (as discussed in Note 5). These Public Shares will be classified as temporary equity upon the completion of the Initial Public Offering in accordance with the Financial Accounting Standards Board’s (“FASB”) Accounting Standards Codification (“ASC”) Topic 480 “Distinguishing Liabilities from Equity.” In such case, the Company will proceed with a Business Combination if the Company has net tangible assets of at least $5,000,001 and the approval of an ordinary resolution. If a shareholder vote is not required by law and the Company does not decide to hold a shareholder vote for business or other legal reasons, the Company will, pursuant to its Amended and Restated Memorandum and Articles of Association (the “Amended and Restated Memorandum and Articles of Association”), conduct the redemptions pursuant to the tender offer rules of the U.S. Securities and Exchange Commission (“SEC”) and file tender offer documents with the SEC prior to completing a Business Combination. If, however, shareholder approval of the transactions is required by law, or the Company decides to obtain shareholder approval for business or legal reasons, the Company will offer to redeem shares in conjunction with a proxy solicitation pursuant to the proxy rules and not pursuant to the tender offer rules. Additionally, each Public Shareholder may elect to redeem its Public Shares irrespective of whether it votes for or against the proposed transaction. If the Company seeks shareholder approval in connection with a Business Combination, the initial shareholders (as defined below) have agreed to vote their Founder Shares (as defined below in Note 4) and any Public Shares purchased during or after the Initial Public Offering in favor of a Business Combination. Subsequent to the consummation of the Initial Public Offering, the Company will adopt an insider trading policy which will require insiders to (i) refrain from purchasing shares during certain blackout periods and when they are in possession of any material non-public information and (ii) clear all trades with the Company’s legal counsel prior to execution. In addition, the initial shareholders have agreed to waive their redemption rights with respect to their Founder Shares and Public Shares in connection with the completion of a Business Combination. Notwithstanding the foregoing, the Amended and Restated Memorandum and Articles of Association provide that a Public Shareholder, together with any affiliate of such shareholder or any other person with whom such shareholder is acting in concert or as a “group” (as defined in Section 13 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”)), will be restricted from redeeming its shares with respect to more than an aggregate of 15% or more of the Class A ordinary shares sold in the Initial Public Offering, without the prior consent of the Company. The Company’s Sponsor, officers and directors (the “initial shareholders”) agreed not to propose an amendment to the Amended and Restated Memorandum and Articles of Association (A) that would modify the substance or timing of the Company’s obligation to allow redemption in connection with its initial business combination or to redeem 100% of its Public Shares if the Company does not complete a Business Combination within 24 months from the closing of the Initial Public Offering, or September 15, 2022 (the “Combination Period”) or (B) with respect to any other provision relating to shareholders’ rights or pre-initial Business Combination activity, unless the Company provides the Public Shareholders with the opportunity to redeem their Class A ordinary shares in conjunction with any such amendment. If the Company is unable to complete a Business Combination within the Combination Period, the Company will (i) cease all operations except for the purpose of winding up, (ii) as promptly as reasonably possible but not more than ten The Sponsor, officers and directors have agreed to waive their liquidation rights with respect to the Founder Shares if the Company fails to complete a Business Combination within the Combination Period. However, if the initial shareholders or members of the Company’s management team acquire Public Shares in or after the Initial Public Offering, they will be entitled to liquidating distributions from the Trust Account with respect to such Public Shares if the Company fails to complete a Business Combination within the Combination Period. The underwriters have agreed to waive their rights to their deferred underwriting commission (see Note 5) held in the Trust Account in the event the Company does not complete a Business Combination within the Combination Period and, in such event, such amount will be included with the other funds held in the Trust Account that will be available to fund the redemption of the Public Shares. In the event of such distribution, it is possible that the per share value of the residual assets remaining available for distribution (including Trust Account assets) will be only $10.00 per share initially held in the Trust Account. In order to protect the amounts held in the Trust Account, the Sponsor has agreed to be liable to the Company if and to the extent any claims by a vendor for services rendered or products sold to the Company, or a prospective target business with which the Company has discussed entering into a transaction agreement, reduce the amount of funds in the Trust Account. This liability will not apply with respect to any claims by a third party who executed a waiver of any right, title, interest or claim of any kind in or to any monies held in the Trust Account or to any claims under the Company’s indemnity of the underwriters of the Initial Public Offering against certain liabilities, including liabilities under the Securities Act. Moreover, in the event that an executed waiver is deemed to be unenforceable against a third party, the Sponsor will not be responsible to the extent of any liability for such third-party claims. The Company will seek to reduce the possibility that the Sponsor will have to indemnify the Trust Account due to claims of creditors by endeavoring to have all vendors, service providers (except for the Company’s independent registered public accounting firm), prospective target businesses or other entities with which the Company does business execute agreements with the Company waiving any right, title, interest or claim of any kind in or to monies held in the Trust Account. Basis of Presentation The accompanying financial statements are presented in U.S. dollars, in conformity with accounting principles generally accepted in the United States of America (“GAAP”) for financial information and pursuant to the rules and regulations of the SEC. As described in the Company’s Form 8-K filed on November 22, 2021 and in Note 2—Restatement of Previously Issued Financial Statements, the Company’s financial statements as of and for the period from May 13, 2020 (inception) through December 31, 2020, and the unaudited interim financial statements as of September 30, 2020, and for the three months ended September 30, 2020, and the period from May 13, 2020 (inception) through September 30, 2020 (collectively, the “2020 Affected Periods”), were restated in the Company’s Annual Report on Form 10-K/A (Amendment No. 2) (the “Annual Report”) to correct the misapplication of accounting guidance related to the Company’s Public Shares in the Company’s previously issued audited and unaudited condensed financial statements for such periods and related to the Company’s calculation of earnings per share. The restated financial statements are indicated as “Restated” in the audited and accompanying notes, as applicable. See Note 2—Restatement of Previously Issued Financial Statements for further discussion. Emerging Growth Company The Company is an “emerging growth company,” as defined in Section 2(a) of the Securities Act, as modified by the Jumpstart Our Business Startups Act of 2012 (the “JOBS Act”), and it may take advantage of certain exemptions from various reporting requirements that are applicable to other public companies that are not emerging growth companies including, but not limited to, not being required to comply with the auditor attestation requirements of Section 404 of the Sarbanes-Oxley Act of 2002, reduced disclosure obligations regarding executive compensation in its periodic reports and proxy statements, and exemptions from the requirements of holding a nonbinding advisory vote on executive compensation and stockholder approval of any golden parachute payments not previously approved. Further, Section 102(b)(1) of the JOBS Act exempts emerging growth companies from being required to comply with new or revised financial accounting standards until private companies (that is, those that have not had a Securities Act registration statement declared effective or do not have a class of securities registered under the Exchange Act) are required to comply with the new or revised financial accounting standards. The JOBS Act provides that an emerging growth company can elect to opt out of the extended transition period and comply with the requirements that apply to non-emerging growth companies but any such an election to opt out is irrevocable. The Company has elected not to opt out of such extended transition period, which means that when a standard is issued or revised and it has different application dates for public or private companies, the Company, as an emerging growth company, can adopt the new or revised standard at the time private companies adopt the new or revised standard. This may make comparison of the Company’s financial statements with another public company that is neither an emerging growth company nor an emerging growth company that has opted out of using the extended transition period difficult or impossible because of the potential differences in accounting standards used. Risk and Uncertainties On January 30, 2020, the World Health Organization (“WHO”) announced a global health emergency because of a new strain of coronavirus (the “COVID-19 outbreak”). In March 2020, the WHO classified the COVID-19 outbreak as a pandemic, based on the rapid increase in exposure globally. The full impact of the COVID-19 outbreak continues to evolve. The impact of the COVID-19 outbreak on the Company’s results of operations, financial position and cash flows will depend on future developments, including the duration and spread of the outbreak and related advisories and restrictions. These developments and the impact of the COVID-19 outbreak on the financial markets and the overall economy are highly uncertain and cannot be predicted. If the financial markets and/or the overall economy are impacted for an extended period, the Company’s results of operations, financial position and cash flows may be materially adversely affected. Additionally, the Company’s ability to complete an Initial Business Combination may be materially adversely affected due to significant governmental measures being implemented to contain the COVID-19 outbreak or treat its impact, including travel restrictions, the shutdown of businesses and quarantines, among others, which may limit the Company’s ability to have meetings with potential investors or affect the ability of a potential target company’s personnel, vendors and service providers to negotiate and consummate an Initial Business Combination in a timely manner. The Company’s ability to consummate an Initial Business Combination may also be dependent on the ability to raise additional equity and debt financing, which may be impacted by the COVID-19 outbreak and the resulting market downturn. Liquidity and Capital Resources As of December 31, 2020, the Company had approximately $1.6 million in its operating bank account and working capital of approximately $1.6 million. To date, the Company’s liquidity needs have been satisfied through a payment of $25,000 from the Sponsor to cover certain expenses on behalf of the Company in exchange for the issuance of the Founder Shares (as defined in Note 4), a loan of approximately $133,000 pursuant to the Note issued to the Sponsor (Note 4) and the net proceeds from the consummation of the Private Placement not held in the Trust Account. The Company fully repaid the Note on September 15, 2020. In addition, in order to finance transaction costs in connection with a Business Combination, the Company’s officers, directors and Initial Shareholders may, but are not obligated to, provide the Company Working Capital Loans (see Note 5). To date, there were no amounts outstanding under any Working Capital Loans. The Company will be using funds held outside of the Trust Account for paying existing accounts payable, identifying and evaluating prospective initial Business Combination candidates, performing due diligence on prospective target businesses, paying for travel expenditures, selecting the target business to merge with or acquire, and structuring, negotiating and consummating the Business Combination. Management continues to evaluate the impact of the COVID-19 pandemic and has concluded that the specific impact is not readily determinable as of the date of the financial statements. The financial statements do not include any adjustments that might result from the outcome of this uncertainty.	Note 1—Description of Organization, Business Operations and Basis of Presentation Broadstone Acquisition Corp. (the “Company”) is a blank check company incorporated as a Cayman Islands exempted company on May 13, 2020. The Company was incorporated for the purpose of effecting a merger, share exchange, asset acquisition, share purchase, reorganization or similar business combination with one or more businesses that the Company has not yet identified (“Business Combination”). The Company is an emerging growth company and, as such, the Company is subject to all of the risks associated with emerging growth companies. As of September 30, 2021, the Company had not commenced any operations. All activity for the period from May 13, 2020 (inception) through September 30, 2021 relates to the Company’s formation and the initial public offering (“Initial Public Offering”) and since the closing of the Initial Public Offering, the search for a prospective initial Business Combination. The Company will not generate any operating revenues until after the completion of its initial Business Combination, at the earliest. The Company will generate non-operating income in the form of interest income on cash and cash equivalents from the proceeds derived from the Initial Public Offering. The Company’s sponsor is Broadstone Sponsor LLP, a United Kingdom limited liability partnership (the “Sponsor”). The registration statement for the Initial Public Offering was declared effective on September 10, 2020. On September 15, 2020, the Company consummated the Initial Public Offering of 30,000,000 units (the “Units” and, with respect to the Class A ordinary shares included in the Units, the “Public Shares”), at $10.00 per Unit, generating gross proceeds of $300.0 million, and incurring offering costs of approximately $16.6 million, inclusive of approximately $10.5 million in deferred underwriting commissions (Note 3). The Company granted the underwriters in the Initial Public Offering a 45-day option to purchase up to 4,500,000 additional Units to cover over-allotments, if any. On October 14, 2020, the underwriters partially exercised the over-allotment option to purchase an additional 530,301 units (the “Over-Allotment Units”). On October 14, 2020, the Company completed the sale of the Over-Allotment Units to underwriters (the “Over-Allotment”), generating gross proceeds of approximately $5.3 million, and incurred additional offering costs of approximately $292,000 in underwriting fees (inclusive of approximately $186,000 in deferred underwriting commissions). Simultaneously with the closing of the Initial Public Offering, the Company consummated the private placement (“Private Placement”) of 8,000,000 warrants (each, a “Private Placement Warrant” and collectively, the “Private Placement Warrants”) to the Sponsor, each exercisable to purchase one Class A ordinary share at $11.50 per share, at a price of $1.00 per Private Placement Warrant, generating gross proceeds to the Company of approximately $8.0 million (Note 4). Simultaneously with the closing of the Over-Allotment Units, on October 14, 2020, the Company consummated the second closing of the Private Placement, resulting in the purchase of an aggregate of an additional 106,060 Private Placement Warrants by the Sponsor, generating gross proceeds to the Company of approximately $106,060. Upon the closing of the Initial Public Offering, the Over-Allotment and the Private Placement, $305.3 million ($10.00 per Unit) of the net proceeds of the Initial Public Offering and certain of the proceeds of the Private Placement was placed in a trust account (“Trust Account”), located in the United States at J.P. Morgan Chase Bank, N.A., with Continental Stock Transfer & Trust Company acting as trustee, and was invested only in United States “government securities” within the meaning of Section 2(a)(16) of the Investment Company Act of 1940, as amended, (the “Investment Company Act”) having a maturity of 185 days or less or in money market funds meeting certain conditions under Rule 2a-7 promulgated under the Investment Company Act that invest only in direct U.S. government treasury obligations, until the earlier of (i) the completion of a Business Combination and (ii) the distribution of the Trust Account as described below. The Company’s management has broad discretion with respect to the specific application of the net proceeds of the Initial Public Offering and the sale of Private Placement Warrants, although substantially all of the net proceeds are intended to be applied generally toward consummating a Business Combination. There is no assurance that the Company will be able to complete a Business Combination successfully. The Company must complete one or more initial Business Combinations having an aggregate fair market value of at least 80% of the assets held in the Trust Account (as defined below) (excluding the deferred underwriting commissions and taxes payable on income earned on the Trust Account) at the time of the agreement to enter into the initial Business Combination. However, the Company will only complete a Business Combination if the post-transaction company owns or acquires 50% or more of the outstanding voting securities of the target or otherwise acquires a controlling interest in the target sufficient for it not to be required to register as an investment company under the Investment Company Act. The Company will provide holders (the “Public Shareholders”) of its Class A ordinary shares, par value $0.0001, sold in the Initial Public Offering (the “Public Shares”), with the opportunity to redeem all or a portion of their Public Shares upon the completion of a Business Combination either (i) in connection with a shareholder meeting called to approve the Business Combination or (ii) by means of a tender offer. The decision as to whether the Company will seek shareholder approval of a Business Combination or conduct a tender offer will be made by the Company, solely in its discretion. The Public Shareholders will be entitled to redeem their Public Shares for a pro rata portion of the amount then in the Trust Account (initially anticipated to be $10.00 per Public Share). The per-share amount to be distributed to Public Shareholders who redeem their Public Shares will not be reduced by the deferred underwriting commissions the Company will pay to the underwriters (as discussed in Note 5). These Public Shares will be classified as temporary equity upon the completion of the Initial Public Offering in accordance with the Financial Accounting Standards Board’s (“FASB”) Accounting Standards Codification (“ASC”) Topic 480 “Distinguishing Liabilities from Equity.” In such case, the Company will proceed with a Business Combination if the Company has net tangible assets of at least $5,000,001 and the approval of an ordinary resolution. If a shareholder vote is not required by law and the Company does not decide to hold a shareholder vote for business or other legal reasons, the Company will, pursuant to its Amended and Restated Memorandum and Articles of Association (the “Amended and Restated Memorandum and Articles of Association”), conduct the redemptions pursuant to the tender offer rules of the U.S. Securities and Exchange Commission (“SEC”) and file tender offer documents with the SEC prior to completing a Business Combination. If, however, shareholder approval of the transactions is required by law, or the Company decides to obtain shareholder approval for business or legal reasons, the Company will offer to redeem shares in conjunction with a proxy solicitation pursuant to the proxy rules and not pursuant to the tender offer rules. Additionally, each Public Shareholder may elect to redeem its Public Shares irrespective of whether it votes for or against the proposed transaction. If the Company seeks shareholder approval in connection with a Business Combination, the initial shareholders (as defined below) have agreed to vote their Founder Shares (as defined below in Note 4) and any Public Shares purchased during or after the Initial Public Offering in favor of a Business Combination. Subsequent to the consummation of the Initial Public Offering, the Company will adopt an insider trading policy which will require insiders to (i) refrain from purchasing shares during certain blackout periods and when they are in possession of any material non-public information and (ii) clear all trades with the Company’s legal counsel prior to execution. In addition, the initial shareholders have agreed to waive their redemption rights with respect to their Founder Shares and Public Shares in connection with the completion of a Business Combination. Notwithstanding the foregoing, the Amended and Restated Memorandum and Articles of Association provide that a Public Shareholder, together with any affiliate of such shareholder or any other person with whom such shareholder is acting in concert or as a “group” (as defined in Section 13 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”)), will be restricted from redeeming its shares with respect to more than an aggregate of 15% or more of the Class A ordinary shares sold in the Initial Public Offering, without the prior consent of the Company. The Company’s Sponsor, officers and directors (the “initial shareholders”) agreed not to propose an amendment to the Amended and Restated Memorandum and Articles of Association (A) that would modify the substance or timing of the Company’s obligation to allow redemption in connection with its initial business combination or to redeem 100% of its Public Shares if the Company does not complete a Business Combination within 24 months from the closing of the Initial Public Offering, or September 15, 2022 (the “Combination Period”) or (B) with respect to any other provision relating to shareholders’ rights or pre-initial Business Combination activity, unless the Company provides the Public Shareholders with the opportunity to redeem their Class A ordinary shares in conjunction with any such amendment. If the Company is unable to complete a Business Combination within the Combination Period, the Company will (i) cease all operations except for the purpose of winding up, (ii) as promptly as reasonably possible but not more than ten The Sponsor, officers and directors have agreed to waive their liquidation rights with respect to the Founder Shares if the Company fails to complete a Business Combination within the Combination Period. However, if the initial shareholders or members of the Company’s management team acquire Public Shares in or after the Initial Public Offering, they will be entitled to liquidating distributions from the Trust Account with respect to such Public Shares if the Company fails to complete a Business Combination within the Combination Period. The underwriters have agreed to waive their rights to their deferred underwriting commission (see Note 5) held in the Trust Account in the event the Company does not complete a Business Combination within the Combination Period and, in such event, such amount will be included with the other funds held in the Trust Account that will be available to fund the redemption of the Public Shares. In the event of such distribution, it is possible that the per share value of the residual assets remaining available for distribution (including Trust Account assets) will be only $10.00 per share initially held in the Trust Account. In order to protect the amounts held in the Trust Account, the Sponsor has agreed to be liable to the Company if and to the extent any claims by a vendor for services rendered or products sold to the Company, or a prospective target business with which the Company has discussed entering into a transaction agreement, reduce the amount of funds in the Trust Account. This liability will not apply with respect to any claims by a third party who executed a waiver of any right, title, interest or claim of any kind in or to any monies held in the Trust Account or to any claims under the Company’s indemnity of the underwriters of the Initial Public Offering against certain liabilities, including liabilities under the Securities Act of 1933, as amended (the “Securities Act”). Moreover, in the event that an executed waiver is deemed to be unenforceable against a third party, the Sponsor will not be responsible to the extent of any liability for such third-party claims. The Company will seek to reduce the possibility that the Sponsor will have to indemnify the Trust Account due to claims of creditors by endeavoring to have all vendors, service providers (except for the Company’s independent registered public accounting firm), prospective target businesses or other entities with which the Company does business execute agreements with the Company waiving any right, title, interest or claim of any kind in or to monies held in the Trust Account. Basis of Presentation The accompanying unaudited condensed financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) for interim financial information and in accordance with the instructions to Form 10-Q and Article 8 of Regulation S-X of the SEC. Certain information or footnote disclosures normally included in the financial statements prepared in accordance with GAAP have been condensed or omitted, pursuant to the rules and regulations of the SEC for interim financial reporting. Accordingly, they do not include all the information and footnotes necessary for a complete presentation of financial position, results of operations, or cash flows. In the opinion of management, the accompanying unaudited condensed financial statements include all adjustments, consisting of a normal recurring nature, which are necessary for a fair presentation of the financial position, operating results and cash flows for the periods presented. The accompanying unaudited condensed financial statements should be read in conjunction with the Company’s Annual Report on Form 10-K/A Amendment No. 2 for the period from May 13, 2020 (inception) through December 31, 2020, as filed with the SEC on November 22, 2021, which contains the audited financial statements and notes thereto. The financial information as of December 31, 2020 is derived from the audited financial statements presented in the Company’s Annual Report on Form 10-K/A Amendment No. 2 for the year ended December 31, 2020. The interim results for the three and nine months ended September 30, 2021 are not necessarily indicative of the results to be expected for the year ending December 31, 2021 or for any future interim periods. Emerging Growth Company The Company is an “emerging growth company,” as defined in Section 2(a) of the Securities Act, as modified by the Jumpstart Our Business Startups Act of 2012 (the “JOBS Act”), and it may take advantage of certain exemptions from various reporting requirements that are applicable to other public companies that are not emerging growth companies including, but not limited to, not being required to comply with the auditor attestation requirements of Section 404 of the Sarbanes-Oxley Act of 2002, reduced disclosure obligations regarding executive compensation in its periodic reports and proxy statements, and exemptions from the requirements of holding a nonbinding advisory vote on executive compensation and stockholder approval of any golden parachute payments not previously approved. Further, Section 102(b)(1) of the JOBS Act exempts emerging growth companies from being required to comply with new or revised financial accounting standards until private companies (that is, those that have not had a Securities Act registration statement declared effective or do not have a class of securities registered under the Exchange Act) are required to comply with the new or revised financial accounting standards. The JOBS Act provides that an emerging growth company can elect to opt out of the extended transition period and comply with the requirements that apply to non-emerging growth companies but any such an election to opt out is irrevocable. The Company has elected not to opt out of such extended transition period, which means that when a standard is issued or revised and it has different application dates for public or private companies, the Company, as an emerging growth company, can adopt the new or revised standard at the time private companies adopt the new or revised standard. This may make comparison of the Company’s financial statements with another public company that is neither an emerging growth company nor an emerging growth company that has opted out of using the extended transition period difficult or impossible because of the potential differences in accounting standards used. Risk and Uncertainties On January 30, 2020, the World Health Organization (“WHO”) announced a global health emergency because of a new strain of coronavirus (the “COVID-19 outbreak”). In March 2020, the WHO classified the COVID-19 outbreak as a pandemic, based on the rapid increase in exposure globally. The full impact of the COVID-19 outbreak continues to evolve. The impact of the COVID-19 outbreak on the Company’s results of operations, financial position and cash flows will depend on future developments, including the duration and spread of the outbreak and related advisories and restrictions. These developments and the impact of the COVID-19 outbreak on the financial markets and the overall economy are highly uncertain and cannot be predicted. If the financial markets and/or the overall economy are impacted for an extended period, the Company’s results of operations, financial position and cash flows may be materially adversely affected. Additionally, the Company’s ability to complete an Initial Business Combination may be materially adversely affected due to significant governmental measures being implemented to contain the COVID-19 outbreak or treat its impact, including travel restrictions, the shutdown of businesses and quarantines, among others, which may limit the Company’s ability to have meetings with potential investors or affect the ability of a potential target company’s personnel, vendors and service providers to negotiate and consummate an Initial Business Combination in a timely manner. The Company’s ability to consummate an Initial Business Combination may also be dependent on the ability to raise additional equity and debt financing, which may be impacted by the COVID-19 outbreak and the resulting market downturn. Going Concern In connection with the Company’s assessment of going concern considerations in accordance with FASB’s Accounting Standards Update (“ASU”) 2014-15, “Disclosures of Uncertainties about an Entity’s Ability to Continue as a Going Concern,” management has determined that if the Company is unable to complete a Business Combination by September 15, 2022, then the Company will cease all operations except for the purpose of liquidating. Further, as of September 30, 2021, we had approximately $0.7 million in our operating bank account and working capital deficit of approximately $(2.0) million. The date for mandatory liquidation and subsequent dissolution as well as the Company’s current cash balance and working capital deficit raise substantial doubt about the Company’s ability to continue as a going concern. No adjustments have been made to the carrying amounts of assets or liabilities should the Company be required to liquidate after September 15, 2022. The Company intends to complete a Business Combination before the mandatory liquidation date.

Restatement of Previously Iss_5

Restatement of Previously Issued Financial Statements	8 Months Ended	9 Months Ended
	Dec. 31, 2020	Sep. 30, 2021
CIK0001815805 BROADSTONE ACQUISITION CORP.
Restatement of Previously Issued Financial Statements	Note 2— Restatement of Previously Issued Financial Statements The Company concluded it should restate its previously issued financial statements by amending Amendment No. 1 to its Annual Report on Form 10-K/A, filed with the SEC on June 10, 2021, to classify all Class A ordinary shares subject to possible redemption in temporary equity. In accordance with the SEC and its staff’s guidance on redeemable equity instruments, ASC 480, paragraph 10-S99, redemption provisions not solely within the control of the Company require ordinary shares subject to redemption to be classified outside of permanent equity. The Company had previously classified a portion of its Class A ordinary shares in permanent equity, or total stockholders’ equity. Although the Company did not specify a maximum redemption threshold, its charter currently provides that, the Company will not redeem its public shares in an amount that would cause its net tangible assets to be less than $5,000,001. Previously, the Company did not consider redeemable shares classified as temporary equity as part of net tangible assets. Effective with these financial statements, the Company revised this interpretation to include temporary equity in net tangible assets. Also, in connection with the change in presentation for the Class A ordinary shares subject to possible redemption, the Company also revised its earnings per share calculation to allocate income and losses shared pro rata between the two classes of shares. This presentation contemplates a Business Combination as the most likely outcome, in which case, both classes of shares share pro rata in the income and losses of the Company. As a result, the Company restated its previously filed financial statements to present all redeemable Class A ordinary shares as temporary equity and to recognize accretion from the initial book value to redemption value at the time of its Initial Public Offering and in accordance with ASC 480. The Company’s previously filed financial statements that contained the error were initially reported in the Company’s Form 8-K filed with the SEC on September 21, 2020 (the “Post-IPO Balance Sheet”), the Company’s Form 10-Q for the quarterly period ended September 30, 2020, the Company’s Form 8-K filed with the SEC on October 20, 2020 (the “As Adjusted Balance Sheet”) for partial exercise of over-allotment option by the underwriters, and the Company's Annual Report on 10-K for the annual period ended December 31, 2020, which were previously restated in the Company's Amendment No. 1 to its Form 10-K/A as filed with the SEC on June 10, 2021, as well as the Form 10-Qs for the quarterly periods ended September 30, 2020 (the “Affected Period”). These financial statements restate the Company’s previously issued audited and unaudited financial statements covering the periods through December 31, 2020. The quarterly periods ended March 31, 2021 and June 30, 2021 will be restated in the Company’s Form 10-Q for the quarterly period ended September 30, 2021. Please see Note 3, Note 7 and Note 8, which have been updated to reflect the restatement of the financials contained in the Annual Report. Subsequent to our previously issued Form 10-K/A on June 9, 2021, in connection with the Company’s assessment of going concern considerations in accordance with FASB’s Accounting Standards Update (“ASU”) 2014-15, “Disclosures of Uncertainties about an Entity’s Ability to Continue as a Going Concern,” management has determined that if the Company is unable to complete a Business Combination by September 15, 2022, then the Company will cease all operations except for the purpose of liquidating. The date for mandatory liquidation and subsequent dissolution as well as the Company’s current cash balance and working capital deficit raise substantial doubt about the Company’s ability to continue as a going concern. No adjustments have been made to the carrying amounts of assets or liabilities should the Company be required to liquidate after September 15, 2022. The Company intends to complete a Business Combination before the mandatory liquidation date. The following tables summarize the effect of the restatement on each financial statement line item as of the dates and for the period indicated: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ As Reported ​ ​ ​ ​ ​ ​ ​ ​ As Previously ​ ​ ​ ​ ​ ​ ​ Restated in ​ ​ ​ ​ ​ ​ 10 K/A Amendment ​ ​ ​ ​ ​ ​ ​ ​ No. 1 ​ Adjustment ​ As Restated Balance Sheet as of September 15, 2020 (unaudited) ​ ​ ​ ​ ​ ​ ​ ​ ​ Class A ordinary shares subject to possible redemption ​ $ 268,023,290 ​ $ 31,976,710 ​ $ 300,000,000 Class A ordinary shares ​ 320 ​ (320) ​ — Additional paid-in capital ​ 5,711,600 ​ (5,711,600) ​ — Retained earnings (accumulated deficit) ​ ​ (712,775) ​ ​ (26,264,790) ​ ​ (26,977,565) Total shareholders’ equity (deficit) ​ $ 5,000,008 ​ $ (31,976,710) ​ $ (26,976,702) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Balance Sheet as of September 30, 2020 (unaudited) ​ ​ ​ ​ ​ ​ ​ ​ ​ Class A ordinary shares subject to possible redemption ​ $ 268,070,700 ​ $ 31,929,300 ​ $ 300,000,000 Class A ordinary shares ​ 319 ​ (319) ​ — Additional paid-in capital ​ 5,664,191 ​ (5,664,191) ​ — Retained earnings (accumulated deficit) ​ ​ (665,364) ​ ​ (26,264,790) ​ ​ (26,930,154) Total shareholders’ equity (deficit) ​ $ 5,000,009 ​ $ (31,929,300) ​ $ (26,929,291) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Balance Sheet as of October 14, 2020 (unaudited) ​ ​ ​ Class A ordinary shares subject to possible redemption ​ $ 272,992,338 ​ $ 32,310,672 ​ $ 305,303,010 Class A ordinary shares ​ 324 ​ (324) ​ — Additional paid-in capital ​ 5,859,953 ​ (5,859,953) ​ — Retained earnings (accumulated deficit) ​ ​ (861,137) ​ ​ (26,450,395) ​ ​ (27,366,562) Total shareholders’ equity (deficit) ​ $ 5,000,003 ​ $ (32,310,672) ​ $ (27,310,669) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Balance Sheet as of December 31, 2020 ​ ​ ​ Class A ordinary shares subject to possible redemption ​ $ 265,086,944 ​ $ 40,216,066 ​ $ 305,303,010 Class A ordinary shares ​ 402 ​ (402) ​ — Additional paid-in capital ​ 13,765,368 ​ (13,765,368) ​ — Retained earnings (accumulated deficit) ​ ​ (8,766,527) ​ ​ (26,450,296) ​ ​ (35,216,823) Total shareholders’ equity (deficit) ​ $ 5,000,006 ​ $ (40,216,066) ​ $ (35,216,060) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Statement of Operations for the three months ended September 30, 2020 (unaudited) ​ ​ ​ ​ ​ ​ ​ ​ ​ Net loss ​ $ (654,632) ​ $ — ​ $ (654,632) Weighted average shares outstanding – Class A ​ ​ 30,000,000 ​ ​ (24,690,382) ​ ​ 5,309,618 Basic and diluted net loss per ordinary share – Class A ​ $ 0.00 ​ $ (0.05) ​ $ (0.05) Weighted average shares outstanding – Class B ​ ​ 8,625,000 ​ ​ — ​ ​ 8,625,000 Basic and diluted net loss per ordinary share – Class B ​ $ (0.01) ​ $ (0.04) ​ $ (0.05) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Statement of Operations for the period from May 13, 2020 (inception) through September 30, 2020 (unaudited) ​ ​ ​ ​ ​ ​ ​ ​ ​ Net loss ​ $ (665,364) ​ $ — ​ $ (665,364) Weighted average shares outstanding – Class A ​ ​ 30,000,000 ​ ​ (26,752,096) ​ ​ 3,247,904 Basic and diluted net loss per ordinary share – Class A ​ $ 0.00 ​ $ (0.06) ​ $ (0.06) Weighted average shares outstanding – Class B ​ ​ 8,625,000 ​ ​ (369,643) ​ ​ 8,255,357 Basic and diluted net loss per ordinary share – Class B ​ $ (0.01) ​ $ (0.05) ​ $ (0.06) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Statement of Operations for the period from May 13, 2020 (inception) through December 31, 2020 ​ ​ ​ Net loss ​ $ (8,766,527) ​ $ — ​ $ (8,766,527) Weighted average shares outstanding – Class A ​ ​ 30,387,905 ​ ​ (16,067,054) ​ ​ 14,320,851 Basic and diluted net loss per ordinary share – Class A ​ $ 0.00 ​ $ (0.39) ​ $ (0.39) Weighted average shares outstanding – Class B ​ ​ 7,539,714 ​ ​ 573,549 ​ ​ 8,113,263 Basic and diluted net loss per ordinary share – Class B ​ $ (1.16) ​ $ 0.77 ​ $ (0.39) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Statement of Cash Flows for the period from May 13, 2020 (inception) through September 30, 2020 ​ ​ ​ Supplemental disclosure of non-cash investing and financing activities: ​ ​ ​ ​ ​ ​ ​ ​ ​ Initial value of Class A ordinary shares subject to possible redemption ​ $ 267,994,700 ​ $ (267,994,700) ​ $ — Change in value of Class A ordinary shares subject to possible redemption ​ $ 76,000 ​ $ (76,000) ​ $ — ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Statement of Cash Flows for the period from May 13, 2020 (inception) through December 31, 2020 ​ ​ ​ ​ ​ ​ ​ ​ ​ Supplemental disclosure of non-cash investing and financing activities: ​ ​ ​ ​ ​ ​ Initial value of Class A ordinary shares subject to possible redemption ​ $ 268,023,290 ​ $ (268,023,290) ​ $ — Change in value of Class A ordinary shares subject to possible redemption ​ $ (2,936,346) ​ $ 2,936,346 ​ $ — ​	Note 2 — Restatement of Previously Issued Financial Statements Restatement of Previously Issued Financial Statements Management identified errors made in its historical financial statements where, at the closing of the Company’s initial public offering (“Initial Public Offering”), the Company improperly valued its ordinary shares subject to possible redemption. The Company previously determined the ordinary shares subject to possible redemption to be equal to the redemption value of $10.00 per share of ordinary shares while also taking into consideration a redemption cannot result in net tangible assets being less than $5,000,001. Management determined that the Public Shares issued during the Initial Public Offering can be redeemed or become redeemable subject to the occurrence of future events considered outside the Company’s control. Therefore, management concluded that the redemption value should include all ordinary shares subject to possible redemption, resulting in the ordinary shares subject to possible redemption being equal to their redemption value. As a result, management has noted an error related to temporary equity and permanent equity. This resulted in an adjustment to the initial carrying value of the ordinary shares subject to possible redemption with the offset recorded to additional paid-in capital and ordinary shares. In addition, in connection with the change in presentation for the Public Shares, the Company determined it should restate its earnings per share calculation to allocate income and losses shared pro rata between the two classes of shares. This presentation contemplates a Business Combination as the most likely outcome, in which case, both classes of shares share pro rata in the income and losses of the Company. In addition, management identified an error as it relates to the accounting for accrued expenses as of September 30, 2021 and the related general and administrative expenses for the three months ended September 30, 2021. The following tables summarize the effect of the restatement on each financial statement line item as of the dates and for the period indicated: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ As ​ ​ ​ ​ ​ ​ ​ ​ Previously ​ ​ ​ ​ ​ ​ Reported Adjustment As Restated Balance Sheet as of March 31, 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ Class A ordinary shares subject to possible redemption ​ $ 274,897,708 ​ $ 30,405,302 $ 305,303,010 Class A ordinary shares ​ ​ 304 ​ ​ (304) ​ ​ — Additional paid-in capital ​ ​ 3,954,702 ​ ​ (3,954,702) ​ ​ — Retained earnings (accumulated deficit) ​ ​ 1,044,237 ​ ​ (26,450,296) ​ ​ (25,406,059) Total shareholders’ equity (deficit) ​ $ 5,000,006 $ (30,405,302) ​ $ (25,405,296) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Balance Sheet as of June 30, 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ Class A ordinary shares subject to possible redemption ​ $ 260,168,806 ​ $ 45,134,204 ​ $ 305,303,010 Class A ordinary shares ​ ​ 451 ​ ​ (451) ​ ​ — Additional paid-in capital ​ ​ 18,683,457 ​ ​ (18,683,457) ​ ​ — Accumulated deficit ​ ​ (13,684,665) ​ ​ (26,450,296) ​ ​ (40,134,961) Total shareholders’ equity (deficit) ​ $ 5,000,006 ​ $ (45,134,204) ​ $ (40,134,198) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Balance Sheet as of September 30, 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ Accrual expenses ​ $ 5,097,232 ​ $ (2,334,252) ​ $ 2,762,980 Total current liabilities ​ ​ 5,177,506 ​ ​ (2,334,252) ​ ​ 2,843,254 Total liabilities ​ ​ 41,104,019 ​ ​ (2,334,252) ​ ​ 38,769,767 Accumulated deficit ​ ​ (40,272,945) ​ ​ 2,334,252 ​ ​ (37,938,693) Total shareholders’ deficit ​ $ (40,272,182) ​ $ 2,334,252 ​ $ (37,937,930) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Statement of Operations for the three months ending September 30, 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ General and administrative expenses ​ $ 2,955,246 ​ $ (2,334,252) ​ $ 620,994 Loss from operations ​ ​ (2,955,246) ​ ​ 2,334,252 ​ ​ (620,994) Net income (loss) ​ ​ (137,984) ​ ​ 2,334,252 ​ ​ 2,196,268 Basic and diluted net income per ordinary share, Class A ​ ​ 0.00 ​ ​ 0.06 ​ ​ 0.06 Basic and diluted net income per ordinary share, Class B ​ $ 0.00 ​ $ 0.06 ​ $ 0.06 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Statement of Operations for the nine months ending September 30, 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ General and administrative expenses ​ $ 6,009,359 ​ $ (2,334,252) ​ $ 3,675,107 Loss from operations ​ ​ (6,009,359) ​ ​ 2,334,252 ​ ​ (3,675,107) Net loss ​ ​ (5,056,122) ​ ​ 2,334,252 ​ ​ (2,721,870) Basic and diluted net loss per ordinary share, Class A ​ ​ (0.13) ​ ​ 0.06 ​ ​ (0.07) Basic and diluted net loss per ordinary share, Class B ​ $ (0.13) ​ $ 0.06 ​ $ (0.07) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Statement of Cash Flows for the three months ended March 31, 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ Supplemental disclosure of non-cash investing and financing activities: ​ ​ ​ ​ ​ ​ ​ ​ ​ Change in value of Class A ordinary shares subject to redemption ​ $ 9,810,764 ​ $ (9,810,764) ​ $ — ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Statement of Cash Flows for the six months ended June 30, 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ Supplemental disclosure of non-cash investing and financing activities: ​ ​ ​ ​ ​ ​ ​ ​ ​ Change in value of Class A ordinary shares subject to redemption ​ $ (4,897,138) ​ $ 4,897,138 ​ $ — ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Statement of Cash Flows for the nine months ended September 30, 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ Cash Flows from Operating Activities: ​ ​ ​ ​ ​ ​ ​ ​ ​ Net Loss ​ $ (5,056,122) ​ $ 2,334,252 ​ $ (2,721,870) Changes in operating assets and liabilities ​ ​ ​ ​ ​ ​ ​ ​ ​ Accrued expenses ​ $ 5,097,013 ​ $ (2,334,252) ​ $ 2,762,761 ​

Summary of Significant Accoun_6

Summary of Significant Accounting Policies	8 Months Ended	9 Months Ended
	Dec. 31, 2020	Sep. 30, 2021
CIK0001815805 BROADSTONE ACQUISITION CORP.
Summary of Significant Accounting Policies	Note 3—Summary of Significant Accounting Policies Use of Estimates The preparation of financial statements in conformity with U.S. GAAP requires the Company’s management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements. Making estimates requires management to exercise significant judgment. It is at least reasonably possible that the estimate of the effect of a condition, situation or set of circumstances that existed at the date of the financial statements, which management considered in formulating its estimate, could change in the near term due to one or more future confirming events. Accordingly, the actual results could differ significantly from those estimates. Cash and Cash Equivalents The Company considers all short-term investments with an original maturity of three months or less when purchased to be cash equivalents. The Company had $305,311,303 in cash equivalents held in the Trust Account as of December 31, 2020. Investments Held in Trust Account The Company’s portfolio of investments held in trust is comprised solely of U.S. government securities, within the meaning set forth in Section 2(a)(16) of the Investment Company Act, with a maturity of 185 days or less, or investments in money market funds that invest in U.S. government securities, or a combination thereof. The Company’s investments held in the Trust Account are classified as trading securities. Trading securities are presented on the balance sheet at fair value at the end of each reporting period. Gains and losses resulting from the change in fair value of these investments are included in income earned on investments in Trust Account in the accompanying statement of operations. The estimated fair values of investments held in the Trust Account are determined using available market information, other than for investments in open-ended money market funds with published daily net asset values (“NAV”), in which case the Company uses NAV as a practical expedient to fair value. The NAV on these investments is typically held constant at $1.00 per unit. Concentration of Credit Risk Financial instruments that potentially subject the Company to concentrations of credit risk consist of cash accounts in a financial institution, which, at times, may exceed the Federal Depository Insurance Coverage of $250,000, and investments held in Trust Account. At December 31, 2020, the Company has not experienced losses on these accounts and management believes the Company is not exposed to significant risks on such accounts. Fair Value Fair value is defined as the price that would be received for sale of an asset or paid for transfer of a liability, in an orderly transaction between market participants at the measurement date. U.S. GAAP establishes a three-tier fair value hierarchy, which prioritizes the inputs used in measuring fair value. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to unobservable inputs (Level 3 measurements). These tiers include: ● Level 1, defined as observable inputs such as quoted prices for identical instruments in active markets; ● Level 2, defined as inputs other than quoted prices in active markets that are either directly or indirectly observable such as quoted prices for similar instruments in active markets or quoted prices for identical or similar instruments in markets that are not active; and ● Level 3, defined as unobservable inputs in which little or no market data exists, therefore requiring an entity to develop its own assumptions, such as valuations derived from valuation techniques in which one or more significant inputs or significant value drivers are unobservable. In some circumstances, the inputs used to measure fair value might be categorized within different levels of the fair value hierarchy. In those instances, the fair value measurement is categorized in its entirety in the fair value hierarchy based on the lowest level input that is significant to the fair value measurement. Fair Value of Financial Instruments As of December 31, 2020, the carrying values of cash, accounts payable and accrued expenses approximate their fair values due to the short-term nature of the instruments. As of December 31, 2020, the Company’s portfolio of investments held in the Trust Account is comprised entirely of investments in money market funds that invest in U.S. government securities. The Company uses NAV as a practical expedient to fair value for its investments in money market funds with published NAV. Offering Costs Associated with the Initial Public Offering The Company complies with the requirements of the ASC 340-10-S99-1 and SEC Staff Accounting Bulletin ("SAB") Topic 5A - "Expenses of Offering". Offering costs consist principally of professional and registration fees incurred through the balance sheet date that are related to the IPO and were charged to shareholders’ equity upon the completion of the IPO. Offering costs amounted to $16,935,162, of which $16,173,600 were charged to temporary equity upon the completion of the Initial Public Offering and $677,570 were charged as general and administrative expenses to the statement of operations. Warrant Liabilities The Company evaluated the Public Warrants and Private Placement Warrants (collectively, “Warrants”, which are discussed in Note 4, Note 7, Note 8 and Note 9) in accordance with ASC 815-40, “Derivatives and Hedging — Contracts in Entity’s Own Equity”, and concluded that a provision in the Warrant Agreement related to certain tender or exchange offers precludes the Warrants from being accounted for as components of equity. As the Warrants meet the definition of a derivative as contemplated in ASC 815, the Warrants are recorded as derivative liabilities on the Balance Sheet and measured at fair value at inception (on the date of the IPO) and at each reporting date in accordance with ASC 820, “Fair Value Measurement”, with changes in fair value recognized in the Statement of Operations in the period of change. Class A Ordinary Shares Subject to Possible Redemption The Company accounts for its Class A ordinary shares subject to possible redemption in accordance with the guidance in FASB ASC Topic 480 “Distinguishing Liabilities from Equity.” Class A ordinary shares subject to mandatory redemption (if any) are classified as liability instruments and are measured at fair value. Conditionally redeemable Class A ordinary shares (including Class A ordinary shares that feature redemption rights that are either within the control of the holder or subject to redemption upon the occurrence of uncertain events not solely within the Company’s control) are classified as temporary equity. At all other times, Class A ordinary shares are classified as shareholders’ equity. The Company’s Class A ordinary shares feature certain redemption rights that are considered to be outside of the Company’s control and subject to the occurrence of uncertain future events. Accordingly, as of December 31, 2020, 26,508,694 Class A ordinary shares subject to possible redemption are presented as temporary equity, outside of the shareholders’ equity section of the Company’s balance sheet. Components of Equity Upon the IPO, the Company issued Class A ordinary shares and Warrants. The Company allocated the proceeds received from the issuance using the with-and-without method. Under that method, the Company first allocated the proceeds to the Public Warrants based on their initial fair value measurement of $11,955,000 and then allocated the remaining proceeds, net of underwriting discounts and offering costs of $16,935,163, to the Class A ordinary shares. All of the 30,530,301 Class A ordinary shares are presented within temporary equity, as shares are subject to redemption upon the occurrence of events not solely within the Company’s control. Similarly, the Company first allocated the proceeds of the Private Placement Warrants based on their initial fair value measurement of $6,368,000 and then allocated the remaining proceeds of $1,654,167 to the Class A ordinary shares. ​ Net Loss Per Ordinary Share The Company complies with accounting and disclosure requirements of FASB ASC Topic 260, “Earnings Per Share.” The Company has two classes of shares, which are referred to as Class A ordinary shares and Class B ordinary shares. Income and losses are shared pro rata between the two classes of shares. Net loss per ordinary share is calculated by dividing the net income (loss) by the weighted average of ordinary shares outstanding for the respective period. The Company did not consider the effect of the warrants issued in connection with the Initial Public Offering and the Private Placement to purchase an aggregate of 23,371,211 shares of ordinary shares in the calculation of diluted loss per share because their exercise is contingent upon future events and since their inclusion would be anti-dilutive under the treasury stock method. Accretion associated with the redeemable Class A ordinary shares is excluded from earnings per share as the redemption value approximates fair value. The following table reflects presents a reconciliation of the numerator and denominator used to compute basic and diluted net loss per share for each class of ordinary shares: ​ ​ ​ ​ ​ ​ ​ ​ ​ For the period ​ ​ From May 13, 2020 ​ ​ (inception) through ​ ​ December 31, 2020 ​ ​ Class A ​ Class B Basic and diluted net loss per ordinary share ​ ​ ​ ​ ​ ​ Numerator: ​ ​ ​ ​ ​ ​ Allocation of net loss, as adjusted ​ $ (5,596,126) ​ $ (3,170,401) Denominator: ​ ​ ​ ​ ​ ​ Basic and diluted weighted average shares outstanding ​ ​ 14,320,851 ​ ​ 8,113,263 Basic and diluted net loss per ordinary share ​ $ (0.39) ​ $ (0.39) ​ Income Taxes The Company follows the asset and liability method of accounting for income taxes under FASB ASC Topic 740, “ Income Taxes FASB ASC Topic 740 prescribes a recognition threshold and a measurement attribute for the financial statement recognition and measurement of tax positions taken or expected to be taken in a tax return. For those benefits to be recognized, a tax position must be more likely than not to be sustained upon examination by taxing authorities. There were no unrecognized tax benefits as of December 31, 2020. The Company’s management determined that the Cayman Islands is the Company’s only major tax jurisdiction. The Company recognizes accrued interest and penalties related to unrecognized tax benefits as income tax expense. There were no unrecognized tax benefits and no amounts were accrued for interest and penalties for the period from May 13, 2020 (inception) through December 31, 2020. The Company is currently not aware of any issues under review that could result in significant payments, accruals or material deviation from its position. The Company may be subject to potential examination by U.S. federal, U.S. state or foreign taxing authorities in the area of income taxes. These potential examinations may include questioning the timing and amount of deductions, the nexus of income among various tax jurisdictions and compliance with U.S. federal, U.S. state and foreign tax laws. There is currently no taxation imposed on income by the Government of the Cayman Islands. In accordance with Cayman federal income tax regulations, income taxes are not levied on the Company. Consequently, deferred tax assets and income taxes are not reflected in the Company’s financial statements. The Company’s management does not expect that the total amount of unrecognized tax benefits will materially change over the next twelve months. Recent Accounting Standards Management does not believe that any recently issued, but not yet effective, accounting standards if currently adopted would have a material effect on the Company’s financial statements.	Note 3—Summary of Significant Accounting Policies Use of Estimates The preparation of financial statements in conformity with GAAP requires the Company’s management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements. Making estimates requires management to exercise significant judgment. It is at least reasonably possible that the estimate of the effect of a condition, situation or set of circumstances that existed at the date of the financial statements, which management considered in formulating its estimate, could change in the near term due to one or more future confirming events. Accordingly, the actual results could differ significantly from those estimates. One of the more significant accounting estimates included in these financial statements is the determination of the fair value of the warrant liabilities. Cash and Cash Equivalents The Company considers all short-term investments with an original maturity of three months or less when purchased to be cash equivalents. The Company had $305,332,346 and $305,311,303 in cash equivalents held in the Trust Account as of September 30, 2021 and December 31, 2020, respectively. Investments Held in Trust Account The Company’s portfolio of investments held in trust is comprised solely of U.S. government securities, within the meaning set forth in Section 2(a)(16) of the Investment Company Act, with a maturity of 185 days or less, or investments in money market funds that invest in U.S. government securities, or a combination thereof. The Company’s investments held in the Trust Account are classified as trading securities. Trading securities are presented on the balance sheet at fair value at the end of each reporting period. Gains and losses resulting from the change in fair value of these investments are included in income earned on investments held in the Trust Account in the accompanying statement of operations. The estimated fair values of investments held in the Trust Account are determined using available market information, other than for investments in open-ended money market funds with published daily net asset values (“NAV”), in which case the Company uses NAV as a practical expedient to fair value. The NAV on these investments is typically held constant at $1.00 per unit. Concentration of Credit Risk Financial instruments that potentially subject the Company to concentrations of credit risk consist of cash accounts in a financial institution, which, at times, may exceed the Federal Deposit Insurance Company coverage of $250,000, and investments held in Trust Account. At September 30, 2021, the Company has not experienced losses on these accounts and management believes the Company is not exposed to significant risks on such accounts. Fair Value Fair value is defined as the price that would be received for sale of an asset or paid for transfer of a liability, in an orderly transaction between market participants at the measurement date. GAAP establishes a three-tier fair value hierarchy, which prioritizes the inputs used in measuring fair value. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to unobservable inputs (Level 3 measurements). These tiers include: ● Level 1, defined as observable inputs such as quoted prices for identical instruments in active markets; ● Level 2, defined as inputs other than quoted prices in active markets that are either directly or indirectly observable such as quoted prices for similar instruments in active markets or quoted prices for identical or similar instruments in markets that are not active; and ● Level 3, defined as unobservable inputs in which little or no market data exists, therefore requiring an entity to develop its own assumptions, such as valuations derived from valuation techniques in which one or more significant inputs or significant value drivers are unobservable. In some circumstances, the inputs used to measure fair value might be categorized within different levels of the fair value hierarchy. In those instances, the fair value measurement is categorized in its entirety in the fair value hierarchy based on the lowest level input that is significant to the fair value measurement. Fair Value of Financial Instruments As of September 30, 2021, and December 31, 2020, the carrying values of cash, accounts payable and accrued expenses approximate their fair values due to the short-term nature of the instruments. As of September 30, 2021, the Company’s portfolio of investments held in the Trust Account is comprised entirely of investments in money market funds that invest in U.S. government securities. The Company uses NAV as a practical expedient to fair value for its investments in money market funds with published NAV. Offering Costs Offering costs consisted of legal, accounting and other expenses incurred through the Initial Public Offering that were directly related to the Initial Public Offering. Offering costs were allocated to the separable financial instruments issued in the Initial Public Offering based on a relative fair value basis, compared to total proceeds received. Offering costs allocated to warrant liabilities were expensed as incurred in the statements of operations. Offering costs associated with the Class A ordinary shares issued were initially charged to temporary equity and then accreted to ordinary shares subject to redemption upon the completion of the Initial Public Offering. Warrant Liabilities The Company evaluated the Public Warrants and Private Placement Warrants (collectively, “Warrants”, which are discussed in Note 3, Note 6, Note 7 and Note 8) in accordance with ASC 815-40, “Derivatives and Hedging — Contracts in Entity’s Own Equity”, and concluded that a provision in the Warrant Agreement related to certain tender or exchange offers precludes the Warrants from being accounted for as components of equity. As the Warrants meet the definition of a derivative as contemplated in ASC 815, the Warrants are recorded as derivative liabilities on the Balance Sheet and measured at fair value at inception (on the date of the IPO) and at each reporting date in accordance with ASC 820, “Fair Value Measurement”, with changes in fair value recognized in the Statement of Operations in the period of change. Class A Ordinary Shares Subject to Possible Redemption The Company accounts for its Class A ordinary shares subject to possible redemption in accordance with the guidance in FASB ASC Topic 480 “Distinguishing Liabilities from Equity.” Class A ordinary shares subject to mandatory redemption (if any) are classified as liability instruments and are measured at fair value. Conditionally redeemable Class A ordinary shares (including Class A ordinary shares that feature redemption rights that are either within the control of the holder or subject to redemption upon the occurrence of uncertain events not solely within the Company’s control) are classified as temporary equity. At all other times, Class A ordinary shares are classified as shareholders’ equity. The Company’s Class A ordinary shares feature certain redemption rights that are considered to be outside of the Company’s control and subject to the occurrence of uncertain future events. Accordingly, as of September 30, 2021 and December 31, 2020, 30,530,301 Class A ordinary shares subject to possible redemption are presented as temporary equity, outside of the shareholders’ equity section of the Company’s balance sheet. Net Income (Loss) Per Ordinary Share Net income (loss) per share is computed by dividing net (loss) income by the weighted-average number of ordinary shares outstanding during the periods. The Company has not considered the effect of the warrants sold in the Initial Public Offering and the Private Placement to purchase an aggregate of 23,371,211, of the Company’s Class A ordinary shares in the calculation of diluted income (loss) per share, since their inclusion would be anti-dilutive under the treasury stock method. In connection with the change in presentation for the Class A ordinary shares subject to redemption, the Company also revised its earnings per share calculations to allocate net income/loss evenly to Class A and Class B ordinary shares. This presentation contemplates a Business Combination as the most likely outcome, in which case, both classes of stock share pro rata in the income/loss of the Company. The contractual formula utilized to calculate the redemption amount approximates fair value. The Class feature to redeem at fair value means that there is effectively only one class of stock. Changes in fair value are not considered a dividend for the purposes of the numerator in the earnings per share calculation. The calculation of diluted income per ordinary stock does not consider the effect of the warrants issued in connection with the IPO since the exercise of the warrants are contingent upon the occurrence of future events and the inclusion of such warrants would be anti-dilutive. The following table reflects the calculation of basic and diluted net income per ordinary share: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ For the three months ​ For the nine months ended ​ ​ ended September 30, 2021 ​ September 30, 2021 ​ Class A Class B Class A Class B Basic and diluted net loss per ordinary share ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Numerator: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Allocation of net income (loss), as adjusted ​ $ 1,757,014 ​ $ 439,254 ​ $ (2,177,496) ​ $ (544,374) Denominator: ​ ​ ​ ​ ​ ​ ​ ​ ​ Basic and diluted weighted average shares outstanding ​ ​ 30,530,301 ​ 7,632,575 ​ 30,530,301 ​ 7,632,575 Basic and diluted net income (loss), per ordinary share ​ $ 0.06 ​ $ 0.06 ​ $ (0.07) ​ $ (0.07) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ For the period ​ ​ ​ ​ ​ ​ ​ ​ from May 13, 2020 ​ ​ For the three months ​ (inception) through ​ ​ ended September 30, 2020 ​ September 30, 2020 ​ Class A Class B Class A Class B Basic and diluted net loss per ordinary share ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Numerator: ​ ​ ​ ​ ​ ​ ​ Allocation of net loss, as adjusted ​ $ (246,740) ​ $ (407,892) $ (194,223) ​ $ (471,141) Denominator: ​ ​ Basic and diluted weighted average shares outstanding ​ 5,217,391 ​ 8,625,000 3,404,255 8,255,357 Basic and diluted net loss per ordinary share ​ $ (0.05) ​ $ (0.05) $ (0.06) ​ $ (0.06) ​ Income Taxes The Company follows the asset and liability method of accounting for income taxes under FASB ASC Topic 740, “ Income Taxes FASB ASC Topic 740 prescribes a recognition threshold and a measurement attribute for the financial statement recognition and measurement of tax positions taken or expected to be taken in a tax return. For those benefits to be recognized, a tax position must be more likely than not to be sustained upon examination by taxing authorities. There were no unrecognized tax benefits as of September 30, 2021 and December 31, 2020. The Company’s management determined that the Cayman Islands is the Company’s only major tax jurisdiction. The Company recognizes accrued interest and penalties related to unrecognized tax benefits as income tax expense. There were no unrecognized tax benefits and no amounts were accrued for interest and penalties for the three months and nine months ended September 30, 2021. The Company is currently not aware of any issues under review that could result in significant payments, accruals or material deviation from its position. The Company may be subject to potential examination by U.S. federal, U.S. state or foreign taxing authorities in the area of income taxes. These potential examinations may include questioning the timing and amount of deductions, the nexus of income among various tax jurisdictions and compliance with U.S. federal, U.S. state and foreign tax laws. There is currently no taxation imposed on income by the Government of the Cayman Islands. In accordance with Cayman federal income tax regulations, income taxes are not levied on the Company. Consequently, deferred tax assets and income taxes are not reflected in the Company’s financial statements. The Company’s management does not expect that the total amount of unrecognized tax benefits will materially change over the next twelve months. Recent Accounting Standards In August 2020, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2020-06, Debt — Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging — Contracts in Entity’s Own Equity (Subtopic 815-40) (“ASU 2020-06”) to simplify accounting for certain financial instruments. ASU 2020-06 eliminates the current models that require separation of beneficial conversion and cash conversion features from convertible instruments and simplifies the derivative scope exception guidance pertaining to equity classification of contracts in an entity’s own equity. The new standard also introduces additional disclosures for convertible debt and freestanding instruments that are indexed to and settled in an entity’s own equity. ASU 2020-06 amends the diluted earnings per share guidance, including the requirement to use the if-converted method for all convertible instruments. ASU 2020-06 is effective January 1, 2022 and should be applied on a full or modified retrospective basis, with early adoption permitted beginning on January 1, 2021. The Company is currently assessing the impact, if any, that ASU 2020-06 would have on the financial position, results of operations or cash flows. Management does not believe that any other recently issued, but not yet effective, accounting standards, if currently adopted, would have a material effect on our condensed financial statements.

Initial Public Offering_2

Initial Public Offering	8 Months Ended	9 Months Ended
	Dec. 31, 2020	Sep. 30, 2021
CIK0001815805 BROADSTONE ACQUISITION CORP.
Initial Public Offering	Note 4—Initial Public Offering On September 15, 2020, the Company consummated the Initial Public Offering of 30,000,000 Units, at $10.00 per Unit, generating gross proceeds of $300.0 million, and incurring offering costs of approximately $16.6 million, inclusive of approximately $10.5 million in deferred underwriting commissions. On October 14, 2020, the Company completed the sale of the Over-Allotment Units to the underwriters, generating gross proceeds of approximately $5.3 million, and incurred additional offering costs of approximately $292,000 in underwriting fees (inclusive of approximately $186,000 in deferred underwriting commissions). Each Unit consists of one Class A ordinary share, par value $0.0001 per share, and one-half of one redeemable warrant (each, a “Public Warrant”). Each whole Public Warrant entitles the holder to purchase one Class A ordinary share at a price of $11.50 per share, subject to adjustment (see Note 6).	Note 4—Initial Public Offering On September 15, 2020, the Company consummated the Initial Public Offering of 30,000,000 Units, at $10.00 per Unit, generating gross proceeds of $300.0 million, and incurring offering costs of approximately $16.6 million, inclusive of approximately $10.5 million in deferred underwriting commissions. On October 14, 2020, the Company completed the sale of the Over-Allotment Units to the underwriters, generating gross proceeds of approximately $5.3 million, and incurred additional offering costs of approximately $292,000 in underwriting fees (inclusive of approximately $186,000 in deferred underwriting commissions). Each Unit consists of one Class A ordinary share, par value $0.0001 per share, and one-half

Related Party Transactions_2_3

Related Party Transactions	8 Months Ended	9 Months Ended
	Dec. 31, 2020	Sep. 30, 2021
CIK0001815805 BROADSTONE ACQUISITION CORP.
Related Party Transactions	Note 5—Related Party Transactions Founder Shares On May 19, 2020, the Sponsor paid $25,000, or approximately $0.003 per share, to cover certain offering costs of the Company in consideration for 8,625,000 Class B ordinary shares, par value $0.0001 per share (the “Founder Shares”). Up to 1,125,000 Founder Shares were subject to forfeiture to the extent that the over-allotment option was not exercised in full by the underwriters, so that the Founder Shares will represent 20.0% of the Company’s issued and outstanding shares after the Initial Public Offering. On October 14, 2020, the underwriters partially exercised the Unit Over-Allotment Option to purchase an additional 530,301 Units. The remaining over-allotment option expired unexercised on October 25, 2020; thus, the Company forfeited 992,425 Class B ordinary shares. The initial shareholders agreed, subject to limited exceptions, not to transfer, assign or sell any of their Founder Shares until the earlier to occur of (i) one year after the completion of the initial Business Combination or (ii) the date following the completion of the initial Business Combination on which the Company completes a liquidation, merger, share exchange or other similar transaction that results in all of the shareholders having the right to exchange their ordinary shares for cash, securities or other property. Notwithstanding the foregoing, if the closing price of the Class A ordinary shares equals or exceeds $12.00 per share (as adjusted for share sub-divisions, share capitalizations, reorganizations, recapitalizations and the like) for any 20 trading days within any 30-trading day period commencing at least 150 days after the initial Business Combination, the Founder Shares will be released from the lockup. Private Placement Warrants Simultaneously with the closing of the Initial Public Offering, the Company consummated the Private Placement of 8,000,000 Private Placement Warrants to the Sponsor, each exercisable to purchase one Class A ordinary share at $11.50 per share, at a price of $1.00 per Private Placement Warrant, generating gross proceeds to the Company of approximately $8.0 million. Simultaneously with the closing of the Over-Allotment Units, on October 14, 2020, the Company consummated the second closing of the Private Placement, resulting in the purchase of an aggregate of an additional 106,060 Private Placement Warrants by the Sponsor, generating gross proceeds to the Company of approximately $106,060. Each warrant is exercisable to purchase one Class A ordinary share at $11.50 per share. A portion of the proceeds from the Private Placement Warrants was added to the proceeds from the Initial Public Offering held in the Trust Account. If the Company does not complete a Business Combination within the Combination Period, the Private Placement Warrants will expire worthless. The Sponsor and the Company’s officers and directors agreed, subject to limited exceptions, not to transfer, assign or sell any of their Private Placement Warrants until 30 days Sponsor Loan On May 19, 2020, the Sponsor agreed to loan the Company up to $300,000 to cover expenses related to the Initial Public Offering pursuant to a promissory note (the “Note”). This loan is non-interest bearing and payable upon the completion of the Initial Public Offering. The Company borrowed approximately $133,000 under the Note. The Company fully repaid this balance on September 15, 2020. Working Capital Loans In addition, in order to finance transaction costs in connection with a Business Combination, the Sponsor or an affiliate of the Sponsor, or certain of the Company’s officers and directors, may, but are not obligated to, loan the Company funds as may be required (“Working Capital Loans”). If the Company completes a Business Combination, the Company will repay the Working Capital Loans. In the event that a Business Combination does not close, the Company may use a portion of proceeds held outside the Trust Account to repay the Working Capital Loans but no proceeds held in the Trust Account would be used to repay the Working Capital Loans. Except for the foregoing, the terms of such Working Capital Loans, if any, have not been determined and no written agreements exist with respect to such loans. The Working Capital Loans would either be repaid upon consummation of a Business Combination, without interest, or, at the lender’s discretion, up to $1.5 million of such Working Capital Loans may be convertible into private placement warrants at a price of $1.00 per warrant. To-date, the Company has no borrowings under any Working Capital Loans. Administrative Support Agreement Commencing on the date the Company’s securities are first listed on the New York Stock Exchange, the Company agreed to pay the Sponsor a total of $10,000 per month for office space, utilities, secretarial and administrative support services provided to members of the Company’s management team. Upon completion of the initial Business Combination or the Company’s liquidation, the Company will cease paying these monthly fees. The Company recognized $37,000 in connection with such services for the period from May 13, 2020 (inception) through December 31, 2020 in general and administrative expenses in the accompanying statement of operations.	Note 5—Related Party Transactions Founder Shares On May 19, 2020, the Sponsor paid $25,000, or approximately $0.003 per share, to cover certain offering costs of the Company in consideration for 8,625,000 Class B ordinary shares, par value $0.0001 per share (the “Founder Shares”). Up to 1,125,000 Founder Shares were subject to forfeiture to the extent that the over-allotment option was not exercised in full by the underwriters, so that the Founder Shares will represent 20.0% of the Company’s issued and outstanding shares after the Initial Public Offering. On October 14, 2020, the underwriters partially exercised the Unit Over-Allotment Option to purchase an additional 530,301 Units. The remaining over-allotment option expired unexercised on October 25, 2020; thus, the Company forfeited 992,425 Class B ordinary shares. The initial shareholders agreed, subject to limited exceptions, not to transfer, assign or sell any of their Founder Shares until the earlier to occur of (i) one year after the completion of the initial Business Combination or (ii) the date following the completion of the initial Business Combination on which the Company completes a liquidation, merger, share exchange or other similar transaction that results in all of the shareholders having the right to exchange their ordinary shares for cash, securities or other property. Notwithstanding the foregoing, if the closing price of the Class A ordinary shares equals or exceeds $12.00 per share (as adjusted for share sub-divisions, share capitalizations, reorganizations, recapitalizations and the like) for any 20 trading days within any 30-trading day period commencing at least 150 days after the initial Business Combination, the Founder Shares will be released from the lockup. Private Placement Warrants Simultaneously with the closing of the Initial Public Offering, the Company consummated the Private Placement of 8,000,000 Private Placement Warrants to the Sponsor, each exercisable to purchase one Class A ordinary share at $11.50 per share, at a price of $1.00 per Private Placement Warrant, generating gross proceeds to the Company of approximately $8.0 million. Simultaneously with the closing of the Over-Allotment Units, on October 14, 2020, the Company consummated the second closing of the Private Placement, resulting in the purchase of an aggregate of an additional 106,060 Private Placement Warrants by the Sponsor, generating gross proceeds to the Company of approximately $106,060. Each warrant is exercisable to purchase one Class A ordinary share at $11.50 per share. A portion of the proceeds from the Private Placement Warrants was added to the proceeds from the Initial Public Offering held in the Trust Account. If the Company does not complete a Business Combination within the Combination Period, the Private Placement Warrants will expire worthless. The Sponsor and the Company’s officers and directors agreed, subject to limited exceptions, not to transfer, assign or sell any of their Private Placement Warrants until 30 days after the completion of the initial Business Combination. Sponsor Loan On May 19, 2020, the Sponsor agreed to loan the Company up to $300,000 to cover expenses related to the Initial Public Offering pursuant to a promissory note (the “Note”). This loan is non-interest bearing and payable upon the completion of the Initial Public Offering. The Company borrowed approximately $133,000 under the Note. The Company fully repaid this balance on September 15, 2020. As of September 30, 2021, and December 31, 2020, there were no amounts outstanding on the Note and the facility is no longer available to the Company. Working Capital Loans In addition, in order to finance transaction costs in connection with a Business Combination, the Sponsor or an affiliate of the Sponsor, or certain of the Company’s officers and directors, may, but are not obligated to, loan the Company funds as may be required (“Working Capital Loans”). If the Company completes a Business Combination, the Company will repay the Working Capital Loans. In the event that a Business Combination does not close, the Company may use a portion of proceeds held outside the Trust Account to repay the Working Capital Loans but no proceeds held in the Trust Account would be used to repay the Working Capital Loans. Except for the foregoing, the terms of such Working Capital Loans, if any, have not been determined and no written agreements exist with respect to such loans. The Working Capital Loans would either be repaid upon consummation of a Business Combination, without interest, or, at the lender’s discretion, up to $1.5 million of such Working Capital Loans may be convertible into private placement warrants at a price of $1.00 per warrant. To-date, the Company has no borrowings under any Working Capital Loans. Administrative Support Agreement Commencing on the date the Company’s securities were first listed on the New York Stock Exchange, the Company agreed to pay the Sponsor a total of $10,000 per month for office space, utilities, secretarial and administrative support services provided to members of the Company’s management team. Upon completion of the initial Business Combination or the Company’s liquidation, the Company will cease paying these monthly fees. The Company recognized $30,000 and $90,000 in connection with such services for the three months and nine months ended September 30, 2021, respectively, in general and administrative expenses in the accompanying statement of operations. As of September 30, 2021, $30,000 is included in accounts payable in the condensed balance sheet.

Commitments and Contingencies_2

Commitments and Contingencies	8 Months Ended	9 Months Ended
	Dec. 31, 2020	Sep. 30, 2021
CIK0001815805 BROADSTONE ACQUISITION CORP.
Commitments and Contingencies	Note 6—Commitments and Contingencies Registration Rights The holders of Founder Shares, Private Placement Warrants, and securities that may be issued upon conversion of Working Capital Loans, if any, are entitled to registration rights pursuant to a registration rights agreement. These holders will be entitled to make up to three demands, excluding short form demands, that the Company register such securities. In addition, these holders will have certain “piggy-back” registration rights with respect to registration statements filed subsequent to the completion of the initial Business Combination. The Company will bear the expenses incurred in connection with the filing of any such registration statements. Underwriting Agreement The Company granted the underwriters a 45-day option from the date of the final prospectus relating to the Initial Public Offering to purchase up to 4,500,000 additional Units to cover over-allotments, if any, at the Initial Public Offering price less the underwriting discounts and commissions. On October 14, 2020, the Underwriters partially exercised the over-allotment option to purchase an additional 530,301 Over-Allotment Units. The remaining over-allotment option expired unexercised on October 25, 2020. The underwriters were entitled to an underwriting discount of $0.20 per unit, or $6.0 million and approximately $0.1 million in the aggregate, paid upon the closing of the Initial Public Offering in September 2020 and the Over-Allotment in October 2020, respectively. The underwriters reimbursed $390,000 to the Company to reimburse certain expenses in connection with the Initial Public Offering. In addition, $0.35 per unit, or approximately $10.7 million in the aggregate, will be payable to the underwriters for deferred underwriting commissions. The deferred fee will become payable to the underwriters from the amounts held in the Trust Account solely in the event that the Company completes a Business Combination, subject to the terms of the underwriting agreement.	Note 6—Commitments and Contingencies Registration Rights The holders of Founder Shares, Private Placement Warrants, and securities that may be issued upon conversion of Working Capital Loans, if any, are entitled to registration rights pursuant to a registration rights agreement. These holders will be entitled to make up to three demands, excluding short form demands, that the Company register such securities. In addition, these holders will have certain “piggy-back” registration rights with respect to registration statements filed subsequent to the completion of the initial Business Combination. The Company will bear the expenses incurred in connection with the filing of any such registration statements. Underwriting Agreement The Company granted the underwriters a 45-day option from the date of the final prospectus relating to the Initial Public Offering to purchase up to 4,500,000 additional Units to cover over-allotments, if any, at the Initial Public Offering price less the underwriting discounts and commissions. On October 14, 2020, the Underwriters partially exercised the over-allotment option to purchase an additional 530,301 Over-Allotment Units. The remaining over-allotment option expired unexercised on October 25, 2020. The underwriters were entitled to an underwriting discount of $0.20 per unit, or $6.0 million and approximately $0.1 million in the aggregate, paid upon the closing of the Initial Public Offering in September 2020 and the Over-Allotment in October 2020, respectively. The underwriters reimbursed $390,000 to the Company to reimburse certain expenses in connection with the Initial Public Offering. In addition, $0.35 per unit, or approximately $10.7 million in the aggregate, will be payable to the underwriters for deferred underwriting commissions. The deferred fee will become payable to the underwriters from the amounts held in the Trust Account solely in the event that the Company completes a Business Combination, subject to the terms of the underwriting agreement. Business Combination Agreement On June 10, 2021, the Company, Broadstone Sponsor LLP, Vertical Aerospace Ltd., a Cayman Islands exempted company with limited liability (“Pubco”), Vertical Merger Sub Ltd., a Cayman Islands exempted company with limited liability and a wholly owned subsidiary of Pubco (“Merger Sub”), Vertical Aerospace Group Ltd., a private limited company incorporated in England and Wales (“Vertical”), Vincent Casey, solely in his capacity as the representative of the shareholders of Vertical and the shareholders of the Vertical thereto (the “Vertical Shareholders”) entered into a Business Combination Agreement (the “Business Combination Agreement”), which, among other things, provides for (a) the merger of the Company with Merger Sub (the “Merger”), with the Company surviving the Merger and the shareholders of the Company becoming shareholders of Pubco, which will become a new public company, and (b) upon the effectiveness of such Merger, the exchange of 100% of the outstanding ordinary shares of Vertical by the Vertical Shareholders for ordinary shares of Pubco. Pubco is a newly formed entity that was formed for the sole purpose of entering into and consummating the transactions set forth in the Business Combination Agreement. The Business Combination Agreement contains customary representations, warranties and covenants by the parties thereto and the closing is subject to certain conditions as further described in the Business Combination Agreement. In connection with the foregoing and concurrently with the execution of the Business Combination Agreement, Pubco and Broadstone entered into subscription agreements (the “Subscription Agreements”) with certain investors (the “PIPE Investors”) pursuant to which the PIPE Investors agreed to subscribe for and purchase, and Pubco agreed to issue and sell to such PIPE Investors, an aggregate of 9,400,000 ordinary shares, par value $0.0001 per share, of Pubco (the “Pubco Ordinary Shares”), at $10.00 per share for gross proceeds of $94,000,000 (the “PIPE Financing”) on the date of closing of the Business Combination. The Pubco Ordinary Shares to be issued under the Subscription Agreements are being issued in private placement transactions pursuant to an exemption from registration requirements of the Securities Act and have not been, and will not be, registered under the U.S. Securities Act of 1933, as amended. Pubco will grant the PIPE Investors certain registration rights in connection with the PIPE Financing. The PIPE Financing is contingent upon, among other things, the closing of the Business Combination. In addition, Pubco entered into a subscription agreement dated October 26, 2021 (the “Convertible Senior Secured Notes Subscription Agreement”) with a certain third-party investor (the “Convertible Senior Secured Notes Investor”), pursuant to which such investor has agreed to purchase $200 million aggregate principal amount of convertible senior secured notes, which will bear interest at a rate of 7.00% per annum for cash interest or 9.00% per annum paid-in-kind, selected at the option of the Company, will be paid semi-annually and will be convertible for Pubco ordinary shares (the “Convertible Senior Secured Notes”). In connection with the execution of the Convertible Senior Secured Notes Subscription Agreement, Pubco agreed to issue 4,000,000 warrants which will be exercisable for one Pubco Ordinary Share each, with an exercise price of $11.50 per Pubco Ordinary Share. (the “Convertible Notes Warrants”), to the Convertible Senior Secured Notes Investor immediately after Closing. The offering of the Convertible Senior Secured Notes and Convertible Notes Warrants is conditioned upon and expected to close concurrently with the closing of the Business Combination.

Shareholders' Deficit

Shareholders' Deficit	8 Months Ended	9 Months Ended
	Dec. 31, 2020	Sep. 30, 2021
CIK0001815805 BROADSTONE ACQUISITION CORP.
Shareholders' Deficit	Note 7—Shareholders’ Equity Preference Shares The Company is authorized to issue 1,000,000 preference shares with a par value of $0.0001 per share and with such designations, voting and other rights and preferences as may be determined from time to time by the Company’s board of directors. As of December 31, 2020, there were no preference shares issued or outstanding Class A Ordinary Shares The Company is authorized to issue 200,000,000 Class A ordinary shares with a par value of $0.0001 per share. As of December 31, 2020, there were 30,530,301 Class A ordinary shares issued and outstanding, including 26,508,694 Class A ordinary shares subject to possible redemption. Class B Ordinary Shares The Company is authorized to issue 20,000,000 Class B ordinary shares with a par value of $0.0001 per share. Holders are entitled to one vote for each Class B ordinary share. As of December 31, 2020, there were 7,632,575 Class B ordinary shares issued and outstanding Holders of the Class A ordinary shares and holders of the Class B ordinary shares will vote together as a single class on all matters submitted to a vote of the Company’s shareholders, except as required by law or stock exchange rule; provided that only holders of the Class B ordinary shares have the right to vote on the appointment of the Company’s directors prior to the initial Business Combination. The Class B ordinary shares will automatically convert into Class A ordinary shares at the time of the initial Business Combination on a one-for-one basis (as adjusted). In the case that additional Class A ordinary shares or equity-linked securities are issued or deemed issued in connection with the initial Business Combination, the number of Class A ordinary shares issuable upon conversion of all Founder Shares will equal, in the aggregate, 20% of the total	Note 7—Shareholders’ Equity Preference Shares The Company is authorized to issue 1,000,000 preference shares with a par value of $0.0001 per share and with such designations, voting and other rights and preferences as may be determined from time to time by the Company’s board of directors. As of September 30, 2021, and December 31, 2020, there were no preference shares issued or outstanding. Class A Ordinary Shares The Company is authorized to issue 200,000,000 Class A ordinary shares with a par value of $0.0001 per share. At September 30, 2021 and December 31, 2020, there were 30,530,301 Class A ordinary shares issued and outstanding, including 30,530,301 Class A ordinary shares subject to possible redemption which have been reflected as temporary equity on the condensed balance sheets. Class B Ordinary Shares The Company is authorized to issue 20,000,000 Class B ordinary shares with a par value of $0.0001 per share. Holders are entitled to one vote for each Class B ordinary share. As of September 30, 2021, and December 31, 2020, there were 7,632,575 Class B ordinary shares issued and outstanding. Holders of the Class A ordinary shares and holders of the Class B ordinary shares will vote together as a single class on all matters submitted to a vote of the Company’s shareholders, except as required by law or stock exchange rule; provided that only holders of the Class B ordinary shares have the right to vote on the appointment of the Company’s directors prior to the initial Business Combination. The Class B ordinary shares will automatically convert into Class A ordinary shares at the time of the initial Business Combination on a one-for-one basis (as adjusted). In the case that additional Class A ordinary shares or equity-linked securities are issued or deemed issued in connection with the initial Business Combination, the number of Class A ordinary shares issuable upon conversion of all Founder Shares will equal, in the aggregate, 20% of the total number of Class A ordinary shares outstanding after such conversion (after giving effect to any redemptions of Class A ordinary shares by Public Shareholders), including the total number of Class A ordinary shares issued, or deemed issued or issuable upon conversion or exercise of any equity-linked securities or rights issued or deemed issued, by the Company in connection with or in relation to the consummation of the initial Business Combination, excluding any Class A ordinary shares or equity-linked securities exercisable for or convertible into Class A ordinary shares issued, or to be issued, to any seller in the initial Business Combination and any Private Placement Warrants issued to the Sponsor, officers or directors upon conversion of Working Capital Loans; provided that such conversion of Founder Shares will never occur on a less than one-for-one basis.

Class A Ordinary Shares Subject

Class A Ordinary Shares Subject to Possible Redemption	8 Months Ended
	Dec. 31, 2020
CIK0001815805 BROADSTONE ACQUISITION CORP.
Class A Ordinary Shares Subject to Possible Redemption	Note 8—Class A Ordinary Shares Subject to Possible Redemption The Company’s Class A ordinary shares feature certain redemption rights that are considered to be outside of the Company’s control and subject to the occurrence of future events. The Company is authorized to issue 200,000,000 shares of Class A ordinary shares with a par value of $0.0001 per share. Holders of the Company’s Class A ordinary shares are entitled to one vote for each share. As of December 31, 2020, there were 30,530,301 shares of Class A ordinary shares outstanding, which were all subject to possible redemption and classified outside of permanent equity in the balance sheets. The Class A ordinary shares subject to possible redemption reflected on the balance sheet is reconciled on the following table: ​ ​ ​ ​ ​ Gross Proceeds $ 305,303,010 Less: ​ Proceeds allocated to Public Warrants ​ (11,955,000) Class A Ordinary Shares issuance costs ​ (16,173,600) Add: ​ Accretion of carrying value to redemption value ​ 28,128,600 Class A Ordinary Shares subject to possible redemption at December 31, 2020 ​ $ 305,303,010 ​

Warrant Liabilities_2

Warrant Liabilities	8 Months Ended	9 Months Ended
	Dec. 31, 2020	Sep. 30, 2021
CIK0001815805 BROADSTONE ACQUISITION CORP.
Warrant Liabilities	Note 9—Warrant Liabilities The Public Warrants will become exercisable at $11.50 per share on the later of (a) 30 days after the completion of a Business Combination or (b) 12 months from the closing of the Initial Public Offering; provided in each case that the Company has an effective registration statement under the Securities Act covering the Class A ordinary shares issuable upon exercise of the warrants and a current prospectus relating to them is available (or the Company permits holders to exercise their warrants on a cashless basis and such cashless exercise is exempt from registration under the Securities Act). The Company has agreed that as soon as practicable, but in no event later than 15 business days after the closing of the initial Business Combination, the Company will use commercially reasonable efforts to file with the SEC a registration statement covering the Class A ordinary shares issuable upon exercise of the warrants and, following the effective date of the registration statement, the Company will use commercially reasonable efforts to maintain a current prospectus relating to those Class A ordinary shares until the warrants expire or are redeemed, as specified in the warrant agreement. If a registration statement covering the Class A ordinary shares issuable upon exercise of the warrants is not effective by the 60th business day after the closing of the initial Business Combination, warrant holders may, until such time as there is an effective registration statement and during any period when the Company will have failed to maintain an effective registration statement, exercise warrants on a “cashless basis” in accordance with Section 3(a)(9) of the Securities Act or another exemption. Notwithstanding the above, if the Class A ordinary shares are at the time of any exercise of a warrant not listed on a national securities exchange such that they satisfy the definition of a “covered security” under Section 18(b)(1) of the Securities Act, the Company may, at its option, require holders of Public Warrants who exercise their warrants to do so on a “cashless basis” in accordance with Section 3(a)(9) of the Securities Act and, in the event the Company so elects, it will not be required to file or maintain in effect a registration statement, and in the event the Company does not so elect, it will use commercially reasonable efforts to register or qualify the shares under applicable blue sky laws to the extent an exemption is not available. The warrants will expire five years after the completion of a Business Combination or earlier upon redemption or liquidation. The exercise price and number of shares issuable upon exercise of the warrants may be adjusted in certain circumstances including in the event of a share dividend or recapitalization, reorganization, merger or consolidation. In addition, if (x) the Company issues additional Class A ordinary shares or equity-linked securities for capital-raising purposes in connection with the closing of the initial Business Combination at an issue price or effective issue price of less than $9.20 per Class A ordinary share (with such issue price or effective issue price to be determined in good faith by the board of directors and, in the case of any such issuance to the initial shareholders or their affiliates, without taking into account any Founder Shares held by the initial shareholders or such affiliates, as applicable, prior to such issuance) (the “Newly Issued Price”), (y) the aggregate gross proceeds from such issuances represent more than 60% of the total equity proceeds, plus interest thereon, available for the funding of the initial Business Combination on the date of the consummation of the initial Business Combination (net of redemptions), and (z) the volume-weighted average trading price of the Class A ordinary shares during the 10-trading day period starting on the trading day prior to the day on which the Company consummates the initial Business Combination (such price, the “Market Value”) is below $9.20 per share, then the exercise price of the warrants will be adjusted (to the nearest cent) to be equal to 115% of the higher of the Market Value and the Newly Issued Price, the $18.00 per share redemption trigger price described below will be adjusted (to the nearest cent) to be equal to 180% of the higher of the Market Value and the Newly Issued Price, and the $10.00 per share redemption trigger price described below will be adjusted (to the nearest cent) to be equal to the higher of the Market Value and the Newly Issued Price”. The Private Placement Warrants are identical to the Public Warrants underlying the Units sold in the Initial Public Offering, except that the Private Placement Warrants and the ordinary shares issuable upon exercise of the Private Placement Warrants, so long as they are held by the Sponsor or its permitted transferees, (i) will not be redeemable by the Company, (ii) may not (including the Class A ordinary shares issuable upon exercise of these warrants), subject to certain limited exceptions, be transferred, assigned or sold by the holders until 30 days after the completion of the initial Business Combination, (iii) may be exercised by the holders on a cashless basis and (iv) will be entitled to registration rights. If the Private Placement Warrants are held by holders other than the Sponsor or its permitted transferees, the Private Placement Warrants will be redeemable by the Company and exercisable by the holders on the same basis as the Public Warrants. Once the warrants become exercisable, the Company may call the Public Warrants for redemption (except with respect to the Private Placement Warrants): ● in whole and not in part; ● at a price of $0.01 per warrant; ● upon a minimum of 30 days ’ prior written notice of redemption; and ● if, and only if, the last reported sale price (the “closing price”) of the Class A ordinary shares equals or exceeds $18.00 per share (as adjusted) for any 20 trading days within a 30 -trading day period ending on the third trading day prior to the date on which the Company sends the notice of redemption to the warrant holders. In addition, once the warrants become exercisable, the Company may call but is not obligated to the warrants for redemption: ● in whole and not in part; ● at $0.10 per warrant upon a minimum of 30 days ’ prior written notice of redemption provided that holders will be able to exercise their warrants on a cashless basis prior to redemption and receive that number of Class A ordinary shares to be determined by reference to an agreed table based on the redemption date and the “fair market value” of the Class A ordinary shares; ● if, and only if, the closing price of the Class A ordinary shares equals or exceeds $10.00 per share (as adjusted) for any 20 trading days within the 30 -trading day period ending three trading days before the Company sends the notice of redemption to the warrant holders; and ● if the closing price of the Class A ordinary shares for any 20 trading days within a 30 -trading day period ending on the third trading day prior to the date on which the Company sends the notice of redemption to the warrant holders is less than $18.00 per share (as adjusted). The “fair market value” of the Class A ordinary shares for the above purpose shall mean the volume-weighted average price of the Class A ordinary shares during the 10 trading days immediately following the date on which the notice of redemption is sent to the holders of warrants. In no event will the warrants be exercisable in connection with this redemption feature for more than 0.361 Class A ordinary shares per warrant (subject to adjustment). If the Company calls the Public Warrants for redemption, management will have the option to require all holders that wish to exercise the Public Warrants to do so on a “cashless basis,” as described in the warrant agreement. Additionally, in no event will the Company be required to net cash settle any Warrants. If the Company is unable to complete the initial Business Combination within the Combination Period and the Company liquidates the funds held in the Trust Account, holders of warrants will not receive any of such funds with respect to their warrants, nor will they receive any distribution from the Company’s assets held outside of the Trust Account with the respect to such warrants. Accordingly, the warrants may expire worthless.	Note 8—Warrant Liabilities The Public Warrants will become exercisable at $11.50 per share on the later of (a) 30 days after the completion of a Business Combination or (b) 12 months from the closing of the Initial Public Offering; provided in each case that the Company has an effective registration statement under the Securities Act covering the Class A ordinary shares issuable upon exercise of the warrants and a current prospectus relating to them is available (or the Company permits holders to exercise their warrants on a cashless basis and such cashless exercise is exempt from registration under the Securities Act). The Company has agreed that as soon as practicable, but in no event later than 15 business days after the closing of the initial Business Combination, the Company will use commercially reasonable efforts to file with the SEC a registration statement covering the Class A ordinary shares issuable upon exercise of the warrants and, following the effective date of the registration statement, the Company will use commercially reasonable efforts to maintain a current prospectus relating to those Class A ordinary shares until the warrants expire or are redeemed, as specified in the warrant agreement. If a registration statement covering the Class A ordinary shares issuable upon exercise of the warrants is not effective by the 60th business day after the closing of the initial Business Combination, warrant holders may, until such time as there is an effective registration statement and during any period when the Company will have failed to maintain an effective registration statement, exercise warrants on a “cashless basis” in accordance with Section 3(a)(9) of the Securities Act or another exemption. Notwithstanding the above, if the Class A ordinary shares are at the time of any exercise of a warrant not listed on a national securities exchange such that they satisfy the definition of a “covered security” under Section 18(b)(1) of the Securities Act, the Company may, at its option, require holders of Public Warrants who exercise their warrants to do so on a “cashless basis” in accordance with Section 3(a)(9) of the Securities Act and, in the event the Company so elects, it will not be required to file or maintain in effect a registration statement, and in the event the Company does not so elect, it will use commercially reasonable efforts to register or qualify the shares under applicable blue sky laws to the extent an exemption is not available. The warrants will expire five years after the completion of a Business Combination or earlier upon redemption or liquidation. The exercise price and number of shares issuable upon exercise of the warrants may be adjusted in certain circumstances including in the event of a share dividend or recapitalization, reorganization, merger or consolidation. In addition, if (x) the Company issues additional Class A ordinary shares or equity-linked securities for capital-raising purposes in connection with the closing of the initial Business Combination at an issue price or effective issue price of less than $9.20 per Class A ordinary share (with such issue price or effective issue price to be determined in good faith by the board of directors and, in the case of any such issuance to the initial shareholders or their affiliates, without taking into account any Founder Shares held by the initial shareholders or such affiliates, as applicable, prior to such issuance) (the “Newly Issued Price”), (y) the aggregate gross proceeds from such issuances represent more than 60% of the total equity proceeds, plus interest thereon, available for the funding of the initial Business Combination on the date of the consummation of the initial Business Combination (net of redemptions), and (z) the volume-weighted average trading price of the Class A ordinary shares during the 10-trading day period starting on the trading day prior to the day on which the Company consummates the initial Business Combination (such price, the “Market Value”) is below $9.20 per share, then the exercise price of the warrants will be adjusted (to the nearest cent) to be equal to 115% of the higher of the Market Value and the Newly Issued Price, the $18.00 per share redemption trigger price described below will be adjusted (to the nearest cent) to be equal to 180% of the higher of the Market Value and the Newly Issued Price, and the $10.00 per share redemption trigger price described below will be adjusted (to the nearest cent) to be equal to the higher of the Market Value and the Newly Issued Price”. The Private Placement Warrants are identical to the Public Warrants underlying the Units sold in the Initial Public Offering, except that the Private Placement Warrants and the ordinary shares issuable upon exercise of the Private Placement Warrants, so long as they are held by the Sponsor or its permitted transferees, (i) will not be redeemable by the Company, (ii) may not (including the Class A ordinary shares issuable upon exercise of these warrants), subject to certain limited exceptions, be transferred, assigned or sold by the holders until 30 days after the completion of the initial Business Combination, (iii) may be exercised by the holders on a cashless basis and (iv) will be entitled to registration rights. If the Private Placement Warrants are held by holders other than the Sponsor or its permitted transferees, the Private Placement Warrants will be redeemable by the Company and exercisable by the holders on the same basis as the Public Warrants. Once the warrants become exercisable, the Company may call the Public Warrants for redemption (except with respect to the Private Placement Warrants): ● in whole and not in part; ● at a price of $0.01 per warrant; ● upon a minimum of 30 days’ prior written notice of redemption; and ● if, and only if, the last reported sale price (the “closing price”) of the Class A ordinary shares equals or exceeds $18.00 per share (as adjusted) for any 20 trading days within a 30 -trading day period ending on the third trading day prior to the date on which the Company sends the notice of redemption to the warrant holders. In addition, once the warrants become exercisable, the Company may call but is not obligated to the warrants for redemption: ● in whole and not in part; ● at $0.10 per warrant upon a minimum of 30 days’ prior written notice of redemption provided that holders will be able to exercise their warrants on a cashless basis prior to redemption and receive that number of Class A ordinary shares to be determined by reference to an agreed table based on the redemption date and the “fair market value” of the Class A ordinary shares; ● if, and only if, the closing price of the Class A ordinary shares equals or exceeds $10.00 per share (as adjusted) for any 20 trading days within the 30 -trading day period ending three trading days before the Company sends the notice of redemption to the warrant holders; and ● if the closing price of the Class A ordinary shares for any 20 trading days within a 30 -trading day period ending on the third trading day prior to the date on which the Company sends the notice of redemption to the warrant holders is less than $18.00 per share (as adjusted). The “fair market value” of the Class A ordinary shares for the above purpose shall mean the volume-weighted average price of the Class A ordinary shares during the 10 trading days immediately following the date on which the notice of redemption is sent to the holders of warrants. In no event will the warrants be exercisable in connection with this redemption feature for more than 0.361 Class A ordinary shares per warrant (subject to adjustment). If the Company calls the Public Warrants for redemption, management will have the option to require all holders that wish to exercise the Public Warrants to do so on a “cashless basis,” as described in the warrant agreement. Additionally, in no event will the Company be required to net cash settle any Warrants. If the Company is unable to complete the initial Business Combination within the Combination Period and the Company liquidates the funds held in the Trust Account, holders of warrants will not receive any of such funds with respect to their warrants, nor will they receive any distribution from the Company’s assets held outside of the Trust Account with the respect to such warrants. Accordingly, the warrants may expire worthless.

Fair Value Measurements_2

Fair Value Measurements	8 Months Ended	9 Months Ended
	Dec. 31, 2020	Sep. 30, 2021
CIK0001815805 BROADSTONE ACQUISITION CORP.
Fair Value Measurements	Note 10—Fair Value Measurements The following table presents information about the Company’s assets that are measured at fair value on a recurring basis at December 31, 2020, and indicates the fair value hierarchy of the valuation inputs the Company utilized to determine such fair value: ​ ​ ​ ​ ​ ​ ​ Description Level December 31, 2020 Assets: ​ ​ ​ ​ ​ Marketable securities held in Trust Account (1) 1 ​ $ 305,311,303 Liabilities: ​ ​ ​ ​ ​ Private Placement Warrants (2) 2 ​ 9,078,787 Public Warrants (2) 1 ​ 17,096,969 (1) The fair value of the marketable securities held in Trust account approximates the carrying amount primarily due to their short-term nature. (2) Measured at fair value on a recurring basis. Warrants The Warrants are accounted for as liabilities in accordance with ASC 815-40 and are presented within warrant liabilities on the Balance Sheet. The warrant liabilities are measured at fair value at inception and on a recurring basis, with changes in fair value presented within change in fair value of warrant liabilities in the Statement of Operations. Initial Measurement The Company established the initial fair value for the Warrants on September 15, 2020, the date of the Company’s Initial Public Offering, using a Binomial Lattice based approach for both the Public Warrants and the Private Placement Warrants. Specifically, the Cox-Rubenstein-Ross (“CRR”) methodology of constructing lattice models. The Company allocated the proceeds received from (i) the sale of Units (which is inclusive of one share of Class A ordinary shares and one The key inputs into the Lattice simulation model for the Private Placement Warrants and Public Warrants were as follows at initial measurement: ​ ​ ​ ​ ​ ​ ​ September 15, ​ ​ 2020 ​ ​ (Initial Input ​ Measurement) Risk-free interest rate ​ 0.28 % Expected term (years) ​ 5.19 ​ Expected volatility ​ 16.0 % Exercise price ​ $ 11.50 ​ Fair value of Units ​ $ 9.60 ​ ​ The Company’s use of a Binomial Lattice based approach required the use of subjective assumptions: ● The risk-free interest rate assumption was based on the five-year U.S. Treasury rate, which was commensurate with the contractual term of the Warrants, which expire on the earlier of (i) five years after the completion of the initial business combination and (ii) upon redemption or liquidation. An increase in the risk-free interest rate, in isolation, would result in an increase in the fair value measurement of the warrant liabilities and vice versa. ● The expected term was determined to be slightly over five years , in-line with a typical equity investor assumed holding period ● The expected volatility assumption was based on the implied volatility from a set of comparable publicly-traded warrants as determined based on the size and proximity of business combinations by similar special purpose acquisition companies. An increase in the expected volatility, in isolation, would result in an increase in the fair value measurement of the warrant liabilities and vice versa. ● The fair value of the Units, which each consist of one Class A ordinary share and one -third of one Public Warrant, represents the closing price on the measurement date as observed from the ticker BSN.U. Based on the applied volatility assumption and the expected term to a business combination noted above, the Company determined that the risk-neutral probability of exceeding the $18.00 redemption value by the start of the exercise period for the Warrants resulted in a nominal difference in value between the Public Warrants and Private Placement Warrants across the valuation dates utilized in the Binomial Lattice based approach. Therefore, the resulting valuations for the two classes of Warrants were determined to be approximately the same. On September 15, 2020, the Private Placement Warrants and Public Warrants were determined to be $0.797 and $0.796 per warrant, respectively. The aggregate values were $6.4 million for the Private Placement Warrants and $12.0 million for the Public Warrants. Subsequent Measurement The Warrants are measured at fair value on a recurring basis and were initially measured at fair value as Level 3 financial liabilities using a Binomial Lattice based approach as of the Company’s public offering date. The subsequent measurement of the Public Warrants as of December 31, 2020 are classified as Level 1 due to the use of an observable market quote in an active market under the ticker BSN.WS. As the transfer of Private Placement Warrants to anyone outside of a small group of individuals who are permitted transferees would result in the Private Placement Warrants having substantially the same terms as the Public Warrants, the Company determined that the fair value of each Private Placement Warrant is equivalent to that of each Public Warrant, with an insignificant adjustment for short-term marketability restrictions. As such, the Private Placement Warrants are classified as Level 2. As of December 31, 2020, the aggregate values of the Private Placement Warrants and Public Warrants were $9.1 million and $17.1 million, respectively. The following table presents the changes in the fair value of warrant liabilities: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Private ​ ​ Warrant ​ ​ Placement ​ Public ​ Liabilities Fair value as of May 13, 2020 (inception) ​ $ — ​ $ — ​ $ — Initial measurement on September 15, 2020 ​ 6,368,000 ​ 11,955,000 ​ 18,323,000 Initial measurement on October 14, 2020 ​ ​ 83,893 ​ ​ 209,469 ​ ​ 293,362 Change in valuation inputs or other assumptions (1) ​ 2,626,894 ​ 4,932,500 ​ 7,559,394 Fair value as of December 31, 2020 ​ $ 9,078,787 ​ $ 17,096,969 ​ $ 26,175,756 (1) Changes in valuation inputs or other assumptions are recognized in change in fair value of warrant liabilities in the Statement of Operations. (2) Transfers to/from Levels 1, 2 and 3 are recognized at the end of the reporting period. The estimated fair value of the Public Warrants transferred from a Level 3 measurement to a Level 1 measurement and the estimated fair value of the Private Placement Warrants transferred from a Level 3 measurement to a Level 2 measurement during the period ended December 31, 2020 when the Public Warrants were separately listed and traded.	Note 9— Fair Value Measurements The following table presents information about the Company’s assets that are measured at fair value on a recurring basis at September 30, 2021 and December 31, 2020, and indicates the fair value hierarchy of the valuation inputs the Company utilized to determine such fair value: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ September 30, Description Level 2021 Assets: ​ Marketable securities held in the Trust Account (1) 1 ​ $ 305,332,346 Liabilities: ​ ​ Private Placement Warrants (2) 2 ​ 8,754,545 Public Warrants (2) 1 ​ 16,486,363 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, Description Level 2020 Assets: ​ Marketable securities held in the Trust Account (1) 1 ​ $ 305,311,303 Liabilities: ​ Private Placement Warrants (2) 2 ​ 9,078,787 Public Warrants (2) 1 ​ 17,096,969 (1) The fair value of the marketable securities held in the Trust account approximates the carrying amount primarily due to their short-term nature. (2) Measured at fair value on a recurring basis. Warrants The Warrants are accounted for as liabilities in accordance with ASC 815-40 and are presented within warrant liabilities on the Balance Sheet. The warrant liabilities are measured at fair value at inception and on a recurring basis, with changes in fair value presented within change in fair value of warrant liabilities in the Statement of Operations. Subsequent Measurement The Warrants are measured at fair value on a recurring basis and were initially measured at fair value as Level 3 financial liabilities using a Binomial Lattice based approach as of the Company’s public offering date. The subsequent measurement of the Public Warrants as of September 30, 2021, and December 31, 2020 are classified as Level 1 due to the use of an observable market quote in an active market under the ticker BSN.WS. As the transfer of Private Placement Warrants to anyone outside of a small group of individuals who are permitted transferees would result in the Private Placement Warrants having substantially the same terms as the Public Warrants, the Company determined that the fair value of each Private Placement Warrant is equivalent to that of each Public Warrant, with an insignificant adjustment for short-term marketability restrictions. As such, the Private Placement Warrants are classified as Level 2 As of September 30, 2021, the aggregate values of the Private Placement Warrants and Public Warrants were $8.8 million and $16.5 million, respectively. The following table presents the changes in the fair value of warrant liabilities: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Private Placement Warrants Public Warrants Warrant Liabilities (2) Fair value as of December 31, 2020 ​ $ 9,078,787 ​ $ 17,096,969 ​ $ 26,175,756 Change in valuation inputs or other assumptions (1) ​ (324,242) ​ (610,606) ​ (934,848) Fair value as of September 30, 2021 ​ $ 8,754,545 ​ $ 16,486,363 ​ $ 25,240,908 (1) Changes in valuation inputs or other assumptions are recognized in change in fair value of warrant liabilities in the Statement of Operations. (2) Transfers to/from Levels 1, 2 and 3 are recognized at the end of the reporting period. The estimated fair value of the Public Warrants transferred from a Level 3 measurement to a Level 1 measurement and the estimated fair value of the Private Placement Warrants transferred from a Level 3 measurement to a Level 2 measurement during the period ended December 31, 2020 when the Public Warrants were separately listed and traded. The measurement for the Private Placement Warrants remains unchanged for the nine months ended September 30, 2021.

Subsequent Events_2

Subsequent Events	8 Months Ended	9 Months Ended
	Dec. 31, 2020	Sep. 30, 2021
CIK0001815805 BROADSTONE ACQUISITION CORP.
Subsequent Events	Note 11—Subsequent Events Management has evaluated subsequent events to determine if events or transactions occurring through June 9, 2021, the date the financial statements were issued, require potential adjustment to or disclosure in the financial statements and has concluded that all such events that would require recognition or disclosure have been recognized or disclosed.	Note 10—Subsequent Events Management evaluated subsequent events and transactions that occurred after the balance sheet date up to the date that the unaudited condensed financial statements were issued. Based upon this review, the Company did not identify any subsequent events that would have required adjustment or disclosure in the unaudited condensed financial statements other than those already disclosed.

Summary of Significant Accoun_7

Summary of Significant Accounting Policies (Policies) - CIK0001815805 BROADSTONE ACQUISITION CORP.	8 Months Ended	9 Months Ended
	Dec. 31, 2020	Sep. 30, 2021
Basis of Presentation	Basis of Presentation The accompanying financial statements are presented in U.S. dollars, in conformity with accounting principles generally accepted in the United States of America (“GAAP”) for financial information and pursuant to the rules and regulations of the SEC. As described in the Company’s Form 8-K filed on November 22, 2021 and in Note 2—Restatement of Previously Issued Financial Statements, the Company’s financial statements as of and for the period from May 13, 2020 (inception) through December 31, 2020, and the unaudited interim financial statements as of September 30, 2020, and for the three months ended September 30, 2020, and the period from May 13, 2020 (inception) through September 30, 2020 (collectively, the “2020 Affected Periods”), were restated in the Company’s Annual Report on Form 10-K/A (Amendment No. 2) (the “Annual Report”) to correct the misapplication of accounting guidance related to the Company’s Public Shares in the Company’s previously issued audited and unaudited condensed financial statements for such periods and related to the Company’s calculation of earnings per share. The restated financial statements are indicated as “Restated” in the audited and accompanying notes, as applicable. See Note 2—Restatement of Previously Issued Financial Statements for further discussion.	Basis of Presentation The accompanying unaudited condensed financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) for interim financial information and in accordance with the instructions to Form 10-Q and Article 8 of Regulation S-X of the SEC. Certain information or footnote disclosures normally included in the financial statements prepared in accordance with GAAP have been condensed or omitted, pursuant to the rules and regulations of the SEC for interim financial reporting. Accordingly, they do not include all the information and footnotes necessary for a complete presentation of financial position, results of operations, or cash flows. In the opinion of management, the accompanying unaudited condensed financial statements include all adjustments, consisting of a normal recurring nature, which are necessary for a fair presentation of the financial position, operating results and cash flows for the periods presented. The accompanying unaudited condensed financial statements should be read in conjunction with the Company’s Annual Report on Form 10-K/A Amendment No. 2 for the period from May 13, 2020 (inception) through December 31, 2020, as filed with the SEC on November 22, 2021, which contains the audited financial statements and notes thereto. The financial information as of December 31, 2020 is derived from the audited financial statements presented in the Company’s Annual Report on Form 10-K/A Amendment No. 2 for the year ended December 31, 2020. The interim results for the three and nine months ended September 30, 2021 are not necessarily indicative of the results to be expected for the year ending December 31, 2021 or for any future interim periods.
Emerging Growth Company	Emerging Growth Company The Company is an “emerging growth company,” as defined in Section 2(a) of the Securities Act, as modified by the Jumpstart Our Business Startups Act of 2012 (the “JOBS Act”), and it may take advantage of certain exemptions from various reporting requirements that are applicable to other public companies that are not emerging growth companies including, but not limited to, not being required to comply with the auditor attestation requirements of Section 404 of the Sarbanes-Oxley Act of 2002, reduced disclosure obligations regarding executive compensation in its periodic reports and proxy statements, and exemptions from the requirements of holding a nonbinding advisory vote on executive compensation and stockholder approval of any golden parachute payments not previously approved. Further, Section 102(b)(1) of the JOBS Act exempts emerging growth companies from being required to comply with new or revised financial accounting standards until private companies (that is, those that have not had a Securities Act registration statement declared effective or do not have a class of securities registered under the Exchange Act) are required to comply with the new or revised financial accounting standards. The JOBS Act provides that an emerging growth company can elect to opt out of the extended transition period and comply with the requirements that apply to non-emerging growth companies but any such an election to opt out is irrevocable. The Company has elected not to opt out of such extended transition period, which means that when a standard is issued or revised and it has different application dates for public or private companies, the Company, as an emerging growth company, can adopt the new or revised standard at the time private companies adopt the new or revised standard. This may make comparison of the Company’s financial statements with another public company that is neither an emerging growth company nor an emerging growth company that has opted out of using the extended transition period difficult or impossible because of the potential differences in accounting standards used.	Emerging Growth Company The Company is an “emerging growth company,” as defined in Section 2(a) of the Securities Act, as modified by the Jumpstart Our Business Startups Act of 2012 (the “JOBS Act”), and it may take advantage of certain exemptions from various reporting requirements that are applicable to other public companies that are not emerging growth companies including, but not limited to, not being required to comply with the auditor attestation requirements of Section 404 of the Sarbanes-Oxley Act of 2002, reduced disclosure obligations regarding executive compensation in its periodic reports and proxy statements, and exemptions from the requirements of holding a nonbinding advisory vote on executive compensation and stockholder approval of any golden parachute payments not previously approved. Further, Section 102(b)(1) of the JOBS Act exempts emerging growth companies from being required to comply with new or revised financial accounting standards until private companies (that is, those that have not had a Securities Act registration statement declared effective or do not have a class of securities registered under the Exchange Act) are required to comply with the new or revised financial accounting standards. The JOBS Act provides that an emerging growth company can elect to opt out of the extended transition period and comply with the requirements that apply to non-emerging growth companies but any such an election to opt out is irrevocable. The Company has elected not to opt out of such extended transition period, which means that when a standard is issued or revised and it has different application dates for public or private companies, the Company, as an emerging growth company, can adopt the new or revised standard at the time private companies adopt the new or revised standard. This may make comparison of the Company’s financial statements with another public company that is neither an emerging growth company nor an emerging growth company that has opted out of using the extended transition period difficult or impossible because of the potential differences in accounting standards used.
Risk and Uncertainties	Risk and Uncertainties On January 30, 2020, the World Health Organization (“WHO”) announced a global health emergency because of a new strain of coronavirus (the “COVID-19 outbreak”). In March 2020, the WHO classified the COVID-19 outbreak as a pandemic, based on the rapid increase in exposure globally. The full impact of the COVID-19 outbreak continues to evolve. The impact of the COVID-19 outbreak on the Company’s results of operations, financial position and cash flows will depend on future developments, including the duration and spread of the outbreak and related advisories and restrictions. These developments and the impact of the COVID-19 outbreak on the financial markets and the overall economy are highly uncertain and cannot be predicted. If the financial markets and/or the overall economy are impacted for an extended period, the Company’s results of operations, financial position and cash flows may be materially adversely affected. Additionally, the Company’s ability to complete an Initial Business Combination may be materially adversely affected due to significant governmental measures being implemented to contain the COVID-19 outbreak or treat its impact, including travel restrictions, the shutdown of businesses and quarantines, among others, which may limit the Company’s ability to have meetings with potential investors or affect the ability of a potential target company’s personnel, vendors and service providers to negotiate and consummate an Initial Business Combination in a timely manner. The Company’s ability to consummate an Initial Business Combination may also be dependent on the ability to raise additional equity and debt financing, which may be impacted by the COVID-19 outbreak and the resulting market downturn.	Risk and Uncertainties On January 30, 2020, the World Health Organization (“WHO”) announced a global health emergency because of a new strain of coronavirus (the “COVID-19 outbreak”). In March 2020, the WHO classified the COVID-19 outbreak as a pandemic, based on the rapid increase in exposure globally. The full impact of the COVID-19 outbreak continues to evolve. The impact of the COVID-19 outbreak on the Company’s results of operations, financial position and cash flows will depend on future developments, including the duration and spread of the outbreak and related advisories and restrictions. These developments and the impact of the COVID-19 outbreak on the financial markets and the overall economy are highly uncertain and cannot be predicted. If the financial markets and/or the overall economy are impacted for an extended period, the Company’s results of operations, financial position and cash flows may be materially adversely affected. Additionally, the Company’s ability to complete an Initial Business Combination may be materially adversely affected due to significant governmental measures being implemented to contain the COVID-19 outbreak or treat its impact, including travel restrictions, the shutdown of businesses and quarantines, among others, which may limit the Company’s ability to have meetings with potential investors or affect the ability of a potential target company’s personnel, vendors and service providers to negotiate and consummate an Initial Business Combination in a timely manner. The Company’s ability to consummate an Initial Business Combination may also be dependent on the ability to raise additional equity and debt financing, which may be impacted by the COVID-19 outbreak and the resulting market downturn.
Liquidity and Capital Resources	Liquidity and Capital Resources As of December 31, 2020, the Company had approximately $1.6 million in its operating bank account and working capital of approximately $1.6 million. To date, the Company’s liquidity needs have been satisfied through a payment of $25,000 from the Sponsor to cover certain expenses on behalf of the Company in exchange for the issuance of the Founder Shares (as defined in Note 4), a loan of approximately $133,000 pursuant to the Note issued to the Sponsor (Note 4) and the net proceeds from the consummation of the Private Placement not held in the Trust Account. The Company fully repaid the Note on September 15, 2020. In addition, in order to finance transaction costs in connection with a Business Combination, the Company’s officers, directors and Initial Shareholders may, but are not obligated to, provide the Company Working Capital Loans (see Note 5). To date, there were no amounts outstanding under any Working Capital Loans. The Company will be using funds held outside of the Trust Account for paying existing accounts payable, identifying and evaluating prospective initial Business Combination candidates, performing due diligence on prospective target businesses, paying for travel expenditures, selecting the target business to merge with or acquire, and structuring, negotiating and consummating the Business Combination. Management continues to evaluate the impact of the COVID-19 pandemic and has concluded that the specific impact is not readily determinable as of the date of the financial statements. The financial statements do not include any adjustments that might result from the outcome of this uncertainty.
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with U.S. GAAP requires the Company’s management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements. Making estimates requires management to exercise significant judgment. It is at least reasonably possible that the estimate of the effect of a condition, situation or set of circumstances that existed at the date of the financial statements, which management considered in formulating its estimate, could change in the near term due to one or more future confirming events. Accordingly, the actual results could differ significantly from those estimates.	Use of Estimates The preparation of financial statements in conformity with GAAP requires the Company’s management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements. Making estimates requires management to exercise significant judgment. It is at least reasonably possible that the estimate of the effect of a condition, situation or set of circumstances that existed at the date of the financial statements, which management considered in formulating its estimate, could change in the near term due to one or more future confirming events. Accordingly, the actual results could differ significantly from those estimates. One of the more significant accounting estimates included in these financial statements is the determination of the fair value of the warrant liabilities.
Cash and Cash Equivalents	Cash and Cash Equivalents The Company considers all short-term investments with an original maturity of three months or less when purchased to be cash equivalents. The Company had $305,311,303 in cash equivalents held in the Trust Account as of December 31, 2020.	Cash and Cash Equivalents The Company considers all short-term investments with an original maturity of three months or less when purchased to be cash equivalents. The Company had $305,332,346 and $305,311,303 in cash equivalents held in the Trust Account as of September 30, 2021 and December 31, 2020, respectively.
Investments Held in Trust Account	Investments Held in Trust Account The Company’s portfolio of investments held in trust is comprised solely of U.S. government securities, within the meaning set forth in Section 2(a)(16) of the Investment Company Act, with a maturity of 185 days or less, or investments in money market funds that invest in U.S. government securities, or a combination thereof. The Company’s investments held in the Trust Account are classified as trading securities. Trading securities are presented on the balance sheet at fair value at the end of each reporting period. Gains and losses resulting from the change in fair value of these investments are included in income earned on investments in Trust Account in the accompanying statement of operations. The estimated fair values of investments held in the Trust Account are determined using available market information, other than for investments in open-ended money market funds with published daily net asset values (“NAV”), in which case the Company uses NAV as a practical expedient to fair value. The NAV on these investments is typically held constant at $1.00 per unit.	Investments Held in Trust Account The Company’s portfolio of investments held in trust is comprised solely of U.S. government securities, within the meaning set forth in Section 2(a)(16) of the Investment Company Act, with a maturity of 185 days or less, or investments in money market funds that invest in U.S. government securities, or a combination thereof. The Company’s investments held in the Trust Account are classified as trading securities. Trading securities are presented on the balance sheet at fair value at the end of each reporting period. Gains and losses resulting from the change in fair value of these investments are included in income earned on investments held in the Trust Account in the accompanying statement of operations. The estimated fair values of investments held in the Trust Account are determined using available market information, other than for investments in open-ended money market funds with published daily net asset values (“NAV”), in which case the Company uses NAV as a practical expedient to fair value. The NAV on these investments is typically held constant at $1.00 per unit.
Concentration of Credit Risk	Concentration of Credit Risk Financial instruments that potentially subject the Company to concentrations of credit risk consist of cash accounts in a financial institution, which, at times, may exceed the Federal Depository Insurance Coverage of $250,000, and investments held in Trust Account. At December 31, 2020, the Company has not experienced losses on these accounts and management believes the Company is not exposed to significant risks on such accounts.	Concentration of Credit Risk Financial instruments that potentially subject the Company to concentrations of credit risk consist of cash accounts in a financial institution, which, at times, may exceed the Federal Deposit Insurance Company coverage of $250,000, and investments held in Trust Account. At September 30, 2021, the Company has not experienced losses on these accounts and management believes the Company is not exposed to significant risks on such accounts.
Fair Value	Fair Value Fair value is defined as the price that would be received for sale of an asset or paid for transfer of a liability, in an orderly transaction between market participants at the measurement date. U.S. GAAP establishes a three-tier fair value hierarchy, which prioritizes the inputs used in measuring fair value. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to unobservable inputs (Level 3 measurements). These tiers include: ● Level 1, defined as observable inputs such as quoted prices for identical instruments in active markets; ● Level 2, defined as inputs other than quoted prices in active markets that are either directly or indirectly observable such as quoted prices for similar instruments in active markets or quoted prices for identical or similar instruments in markets that are not active; and ● Level 3, defined as unobservable inputs in which little or no market data exists, therefore requiring an entity to develop its own assumptions, such as valuations derived from valuation techniques in which one or more significant inputs or significant value drivers are unobservable. In some circumstances, the inputs used to measure fair value might be categorized within different levels of the fair value hierarchy. In those instances, the fair value measurement is categorized in its entirety in the fair value hierarchy based on the lowest level input that is significant to the fair value measurement.	Fair Value Fair value is defined as the price that would be received for sale of an asset or paid for transfer of a liability, in an orderly transaction between market participants at the measurement date. GAAP establishes a three-tier fair value hierarchy, which prioritizes the inputs used in measuring fair value. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to unobservable inputs (Level 3 measurements). These tiers include: ● Level 1, defined as observable inputs such as quoted prices for identical instruments in active markets; ● Level 2, defined as inputs other than quoted prices in active markets that are either directly or indirectly observable such as quoted prices for similar instruments in active markets or quoted prices for identical or similar instruments in markets that are not active; and ● Level 3, defined as unobservable inputs in which little or no market data exists, therefore requiring an entity to develop its own assumptions, such as valuations derived from valuation techniques in which one or more significant inputs or significant value drivers are unobservable. In some circumstances, the inputs used to measure fair value might be categorized within different levels of the fair value hierarchy. In those instances, the fair value measurement is categorized in its entirety in the fair value hierarchy based on the lowest level input that is significant to the fair value measurement.
Going Concern		Going Concern In connection with the Company’s assessment of going concern considerations in accordance with FASB’s Accounting Standards Update (“ASU”) 2014-15, “Disclosures of Uncertainties about an Entity’s Ability to Continue as a Going Concern,” management has determined that if the Company is unable to complete a Business Combination by September 15, 2022, then the Company will cease all operations except for the purpose of liquidating. Further, as of September 30, 2021, we had approximately $0.7 million in our operating bank account and working capital deficit of approximately $(2.0) million. The date for mandatory liquidation and subsequent dissolution as well as the Company’s current cash balance and working capital deficit raise substantial doubt about the Company’s ability to continue as a going concern. No adjustments have been made to the carrying amounts of assets or liabilities should the Company be required to liquidate after September 15, 2022. The Company intends to complete a Business Combination before the mandatory liquidation date.
Fair Value of Financial Instruments	Fair Value of Financial Instruments As of December 31, 2020, the carrying values of cash, accounts payable and accrued expenses approximate their fair values due to the short-term nature of the instruments. As of December 31, 2020, the Company’s portfolio of investments held in the Trust Account is comprised entirely of investments in money market funds that invest in U.S. government securities. The Company uses NAV as a practical expedient to fair value for its investments in money market funds with published NAV.	Fair Value of Financial Instruments As of September 30, 2021, and December 31, 2020, the carrying values of cash, accounts payable and accrued expenses approximate their fair values due to the short-term nature of the instruments. As of September 30, 2021, the Company’s portfolio of investments held in the Trust Account is comprised entirely of investments in money market funds that invest in U.S. government securities. The Company uses NAV as a practical expedient to fair value for its investments in money market funds with published NAV.
Offering Costs Associated with the Initial Public Offering	Offering Costs Associated with the Initial Public Offering The Company complies with the requirements of the ASC 340-10-S99-1 and SEC Staff Accounting Bulletin ("SAB") Topic 5A - "Expenses of Offering". Offering costs consist principally of professional and registration fees incurred through the balance sheet date that are related to the IPO and were charged to shareholders’ equity upon the completion of the IPO. Offering costs amounted to $16,935,162, of which $16,173,600 were charged to temporary equity upon the completion of the Initial Public Offering and $677,570 were charged as general and administrative expenses to the statement of operations.	Offering Costs Offering costs consisted of legal, accounting and other expenses incurred through the Initial Public Offering that were directly related to the Initial Public Offering. Offering costs were allocated to the separable financial instruments issued in the Initial Public Offering based on a relative fair value basis, compared to total proceeds received. Offering costs allocated to warrant liabilities were expensed as incurred in the statements of operations. Offering costs associated with the Class A ordinary shares issued were initially charged to temporary equity and then accreted to ordinary shares subject to redemption upon the completion of the Initial Public Offering.
Warrant Liabilities	Warrant Liabilities The Company evaluated the Public Warrants and Private Placement Warrants (collectively, “Warrants”, which are discussed in Note 4, Note 7, Note 8 and Note 9) in accordance with ASC 815-40, “Derivatives and Hedging — Contracts in Entity’s Own Equity”, and concluded that a provision in the Warrant Agreement related to certain tender or exchange offers precludes the Warrants from being accounted for as components of equity. As the Warrants meet the definition of a derivative as contemplated in ASC 815, the Warrants are recorded as derivative liabilities on the Balance Sheet and measured at fair value at inception (on the date of the IPO) and at each reporting date in accordance with ASC 820, “Fair Value Measurement”, with changes in fair value recognized in the Statement of Operations in the period of change.	Warrant Liabilities The Company evaluated the Public Warrants and Private Placement Warrants (collectively, “Warrants”, which are discussed in Note 3, Note 6, Note 7 and Note 8) in accordance with ASC 815-40, “Derivatives and Hedging — Contracts in Entity’s Own Equity”, and concluded that a provision in the Warrant Agreement related to certain tender or exchange offers precludes the Warrants from being accounted for as components of equity. As the Warrants meet the definition of a derivative as contemplated in ASC 815, the Warrants are recorded as derivative liabilities on the Balance Sheet and measured at fair value at inception (on the date of the IPO) and at each reporting date in accordance with ASC 820, “Fair Value Measurement”, with changes in fair value recognized in the Statement of Operations in the period of change.
Class A Ordinary Shares Subject to Possible Redemption	Class A Ordinary Shares Subject to Possible Redemption The Company accounts for its Class A ordinary shares subject to possible redemption in accordance with the guidance in FASB ASC Topic 480 “Distinguishing Liabilities from Equity.” Class A ordinary shares subject to mandatory redemption (if any) are classified as liability instruments and are measured at fair value. Conditionally redeemable Class A ordinary shares (including Class A ordinary shares that feature redemption rights that are either within the control of the holder or subject to redemption upon the occurrence of uncertain events not solely within the Company’s control) are classified as temporary equity. At all other times, Class A ordinary shares are classified as shareholders’ equity. The Company’s Class A ordinary shares feature certain redemption rights that are considered to be outside of the Company’s control and subject to the occurrence of uncertain future events. Accordingly, as of December 31, 2020, 26,508,694 Class A ordinary shares subject to possible redemption are presented as temporary equity, outside of the shareholders’ equity section of the Company’s balance sheet.	Class A Ordinary Shares Subject to Possible Redemption The Company accounts for its Class A ordinary shares subject to possible redemption in accordance with the guidance in FASB ASC Topic 480 “Distinguishing Liabilities from Equity.” Class A ordinary shares subject to mandatory redemption (if any) are classified as liability instruments and are measured at fair value. Conditionally redeemable Class A ordinary shares (including Class A ordinary shares that feature redemption rights that are either within the control of the holder or subject to redemption upon the occurrence of uncertain events not solely within the Company’s control) are classified as temporary equity. At all other times, Class A ordinary shares are classified as shareholders’ equity. The Company’s Class A ordinary shares feature certain redemption rights that are considered to be outside of the Company’s control and subject to the occurrence of uncertain future events. Accordingly, as of September 30, 2021 and December 31, 2020, 30,530,301 Class A ordinary shares subject to possible redemption are presented as temporary equity, outside of the shareholders’ equity section of the Company’s balance sheet.
Components of Equity	Components of Equity Upon the IPO, the Company issued Class A ordinary shares and Warrants. The Company allocated the proceeds received from the issuance using the with-and-without method. Under that method, the Company first allocated the proceeds to the Public Warrants based on their initial fair value measurement of $11,955,000 and then allocated the remaining proceeds, net of underwriting discounts and offering costs of $16,935,163, to the Class A ordinary shares. All of the 30,530,301 Class A ordinary shares are presented within temporary equity, as shares are subject to redemption upon the occurrence of events not solely within the Company’s control. Similarly, the Company first allocated the proceeds of the Private Placement Warrants based on their initial fair value measurement of $6,368,000 and then allocated the remaining proceeds of $1,654,167 to the Class A ordinary shares.
Net Loss Per Ordinary Share	​ Net Loss Per Ordinary Share The Company complies with accounting and disclosure requirements of FASB ASC Topic 260, “Earnings Per Share.” The Company has two classes of shares, which are referred to as Class A ordinary shares and Class B ordinary shares. Income and losses are shared pro rata between the two classes of shares. Net loss per ordinary share is calculated by dividing the net income (loss) by the weighted average of ordinary shares outstanding for the respective period. The Company did not consider the effect of the warrants issued in connection with the Initial Public Offering and the Private Placement to purchase an aggregate of 23,371,211 shares of ordinary shares in the calculation of diluted loss per share because their exercise is contingent upon future events and since their inclusion would be anti-dilutive under the treasury stock method. Accretion associated with the redeemable Class A ordinary shares is excluded from earnings per share as the redemption value approximates fair value. The following table reflects presents a reconciliation of the numerator and denominator used to compute basic and diluted net loss per share for each class of ordinary shares: ​ ​ ​ ​ ​ ​ ​ ​ ​ For the period ​ ​ From May 13, 2020 ​ ​ (inception) through ​ ​ December 31, 2020 ​ ​ Class A ​ Class B Basic and diluted net loss per ordinary share ​ ​ ​ ​ ​ ​ Numerator: ​ ​ ​ ​ ​ ​ Allocation of net loss, as adjusted ​ $ (5,596,126) ​ $ (3,170,401) Denominator: ​ ​ ​ ​ ​ ​ Basic and diluted weighted average shares outstanding ​ ​ 14,320,851 ​ ​ 8,113,263 Basic and diluted net loss per ordinary share ​ $ (0.39) ​ $ (0.39)	Net Income (Loss) Per Ordinary Share Net income (loss) per share is computed by dividing net (loss) income by the weighted-average number of ordinary shares outstanding during the periods. The Company has not considered the effect of the warrants sold in the Initial Public Offering and the Private Placement to purchase an aggregate of 23,371,211, of the Company’s Class A ordinary shares in the calculation of diluted income (loss) per share, since their inclusion would be anti-dilutive under the treasury stock method. In connection with the change in presentation for the Class A ordinary shares subject to redemption, the Company also revised its earnings per share calculations to allocate net income/loss evenly to Class A and Class B ordinary shares. This presentation contemplates a Business Combination as the most likely outcome, in which case, both classes of stock share pro rata in the income/loss of the Company. The contractual formula utilized to calculate the redemption amount approximates fair value. The Class feature to redeem at fair value means that there is effectively only one class of stock. Changes in fair value are not considered a dividend for the purposes of the numerator in the earnings per share calculation. The calculation of diluted income per ordinary stock does not consider the effect of the warrants issued in connection with the IPO since the exercise of the warrants are contingent upon the occurrence of future events and the inclusion of such warrants would be anti-dilutive. The following table reflects the calculation of basic and diluted net income per ordinary share: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ For the three months ​ For the nine months ended ​ ​ ended September 30, 2021 ​ September 30, 2021 ​ Class A Class B Class A Class B Basic and diluted net loss per ordinary share ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Numerator: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Allocation of net income (loss), as adjusted ​ $ 1,757,014 ​ $ 439,254 ​ $ (2,177,496) ​ $ (544,374) Denominator: ​ ​ ​ ​ ​ ​ ​ ​ ​ Basic and diluted weighted average shares outstanding ​ ​ 30,530,301 ​ 7,632,575 ​ 30,530,301 ​ 7,632,575 Basic and diluted net income (loss), per ordinary share ​ $ 0.06 ​ $ 0.06 ​ $ (0.07) ​ $ (0.07) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ For the period ​ ​ ​ ​ ​ ​ ​ ​ from May 13, 2020 ​ ​ For the three months ​ (inception) through ​ ​ ended September 30, 2020 ​ September 30, 2020 ​ Class A Class B Class A Class B Basic and diluted net loss per ordinary share ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Numerator: ​ ​ ​ ​ ​ ​ ​ Allocation of net loss, as adjusted ​ $ (246,740) ​ $ (407,892) $ (194,223) ​ $ (471,141) Denominator: ​ ​ Basic and diluted weighted average shares outstanding ​ 5,217,391 ​ 8,625,000 3,404,255 8,255,357 Basic and diluted net loss per ordinary share ​ $ (0.05) ​ $ (0.05) $ (0.06) ​ $ (0.06) ​
Income Taxes	Income Taxes The Company follows the asset and liability method of accounting for income taxes under FASB ASC Topic 740, “ Income Taxes FASB ASC Topic 740 prescribes a recognition threshold and a measurement attribute for the financial statement recognition and measurement of tax positions taken or expected to be taken in a tax return. For those benefits to be recognized, a tax position must be more likely than not to be sustained upon examination by taxing authorities. There were no unrecognized tax benefits as of December 31, 2020. The Company’s management determined that the Cayman Islands is the Company’s only major tax jurisdiction. The Company recognizes accrued interest and penalties related to unrecognized tax benefits as income tax expense. There were no unrecognized tax benefits and no amounts were accrued for interest and penalties for the period from May 13, 2020 (inception) through December 31, 2020. The Company is currently not aware of any issues under review that could result in significant payments, accruals or material deviation from its position. The Company may be subject to potential examination by U.S. federal, U.S. state or foreign taxing authorities in the area of income taxes. These potential examinations may include questioning the timing and amount of deductions, the nexus of income among various tax jurisdictions and compliance with U.S. federal, U.S. state and foreign tax laws. There is currently no taxation imposed on income by the Government of the Cayman Islands. In accordance with Cayman federal income tax regulations, income taxes are not levied on the Company. Consequently, deferred tax assets and income taxes are not reflected in the Company’s financial statements. The Company’s management does not expect that the total amount of unrecognized tax benefits will materially change over the next twelve months.	Income Taxes The Company follows the asset and liability method of accounting for income taxes under FASB ASC Topic 740, “ Income Taxes FASB ASC Topic 740 prescribes a recognition threshold and a measurement attribute for the financial statement recognition and measurement of tax positions taken or expected to be taken in a tax return. For those benefits to be recognized, a tax position must be more likely than not to be sustained upon examination by taxing authorities. There were no unrecognized tax benefits as of September 30, 2021 and December 31, 2020. The Company’s management determined that the Cayman Islands is the Company’s only major tax jurisdiction. The Company recognizes accrued interest and penalties related to unrecognized tax benefits as income tax expense. There were no unrecognized tax benefits and no amounts were accrued for interest and penalties for the three months and nine months ended September 30, 2021. The Company is currently not aware of any issues under review that could result in significant payments, accruals or material deviation from its position. The Company may be subject to potential examination by U.S. federal, U.S. state or foreign taxing authorities in the area of income taxes. These potential examinations may include questioning the timing and amount of deductions, the nexus of income among various tax jurisdictions and compliance with U.S. federal, U.S. state and foreign tax laws. There is currently no taxation imposed on income by the Government of the Cayman Islands. In accordance with Cayman federal income tax regulations, income taxes are not levied on the Company. Consequently, deferred tax assets and income taxes are not reflected in the Company’s financial statements. The Company’s management does not expect that the total amount of unrecognized tax benefits will materially change over the next twelve months.
Recent Accounting Standards	Recent Accounting Standards Management does not believe that any recently issued, but not yet effective, accounting standards if currently adopted would have a material effect on the Company’s financial statements.	Recent Accounting Standards In August 2020, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2020-06, Debt — Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging — Contracts in Entity’s Own Equity (Subtopic 815-40) (“ASU 2020-06”) to simplify accounting for certain financial instruments. ASU 2020-06 eliminates the current models that require separation of beneficial conversion and cash conversion features from convertible instruments and simplifies the derivative scope exception guidance pertaining to equity classification of contracts in an entity’s own equity. The new standard also introduces additional disclosures for convertible debt and freestanding instruments that are indexed to and settled in an entity’s own equity. ASU 2020-06 amends the diluted earnings per share guidance, including the requirement to use the if-converted method for all convertible instruments. ASU 2020-06 is effective January 1, 2022 and should be applied on a full or modified retrospective basis, with early adoption permitted beginning on January 1, 2021. The Company is currently assessing the impact, if any, that ASU 2020-06 would have on the financial position, results of operations or cash flows. Management does not believe that any other recently issued, but not yet effective, accounting standards, if currently adopted, would have a material effect on our condensed financial statements.

Restatement of Previously Iss_6

Restatement of Previously Issued Financial Statements (Tables)	5 Months Ended	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2021
CIK0001815805 BROADSTONE ACQUISITION CORP.
Summary of effect of the restatement on each financial statement	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ As Reported ​ ​ ​ ​ ​ ​ ​ ​ As Previously ​ ​ ​ ​ ​ ​ ​ Restated in ​ ​ ​ ​ ​ ​ 10 K/A Amendment ​ ​ ​ ​ ​ ​ ​ ​ No. 1 ​ Adjustment ​ As Restated Balance Sheet as of September 15, 2020 (unaudited) ​ ​ ​ ​ ​ ​ ​ ​ ​ Class A ordinary shares subject to possible redemption ​ $ 268,023,290 ​ $ 31,976,710 ​ $ 300,000,000 Class A ordinary shares ​ 320 ​ (320) ​ — Additional paid-in capital ​ 5,711,600 ​ (5,711,600) ​ — Retained earnings (accumulated deficit) ​ ​ (712,775) ​ ​ (26,264,790) ​ ​ (26,977,565) Total shareholders’ equity (deficit) ​ $ 5,000,008 ​ $ (31,976,710) ​ $ (26,976,702) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Balance Sheet as of September 30, 2020 (unaudited) ​ ​ ​ ​ ​ ​ ​ ​ ​ Class A ordinary shares subject to possible redemption ​ $ 268,070,700 ​ $ 31,929,300 ​ $ 300,000,000 Class A ordinary shares ​ 319 ​ (319) ​ — Additional paid-in capital ​ 5,664,191 ​ (5,664,191) ​ — Retained earnings (accumulated deficit) ​ ​ (665,364) ​ ​ (26,264,790) ​ ​ (26,930,154) Total shareholders’ equity (deficit) ​ $ 5,000,009 ​ $ (31,929,300) ​ $ (26,929,291) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Balance Sheet as of October 14, 2020 (unaudited) ​ ​ ​ Class A ordinary shares subject to possible redemption ​ $ 272,992,338 ​ $ 32,310,672 ​ $ 305,303,010 Class A ordinary shares ​ 324 ​ (324) ​ — Additional paid-in capital ​ 5,859,953 ​ (5,859,953) ​ — Retained earnings (accumulated deficit) ​ ​ (861,137) ​ ​ (26,450,395) ​ ​ (27,366,562) Total shareholders’ equity (deficit) ​ $ 5,000,003 ​ $ (32,310,672) ​ $ (27,310,669) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Balance Sheet as of December 31, 2020 ​ ​ ​ Class A ordinary shares subject to possible redemption ​ $ 265,086,944 ​ $ 40,216,066 ​ $ 305,303,010 Class A ordinary shares ​ 402 ​ (402) ​ — Additional paid-in capital ​ 13,765,368 ​ (13,765,368) ​ — Retained earnings (accumulated deficit) ​ ​ (8,766,527) ​ ​ (26,450,296) ​ ​ (35,216,823) Total shareholders’ equity (deficit) ​ $ 5,000,006 ​ $ (40,216,066) ​ $ (35,216,060) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Statement of Operations for the three months ended September 30, 2020 (unaudited) ​ ​ ​ ​ ​ ​ ​ ​ ​ Net loss ​ $ (654,632) ​ $ — ​ $ (654,632) Weighted average shares outstanding – Class A ​ ​ 30,000,000 ​ ​ (24,690,382) ​ ​ 5,309,618 Basic and diluted net loss per ordinary share – Class A ​ $ 0.00 ​ $ (0.05) ​ $ (0.05) Weighted average shares outstanding – Class B ​ ​ 8,625,000 ​ ​ — ​ ​ 8,625,000 Basic and diluted net loss per ordinary share – Class B ​ $ (0.01) ​ $ (0.04) ​ $ (0.05) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Statement of Operations for the period from May 13, 2020 (inception) through September 30, 2020 (unaudited) ​ ​ ​ ​ ​ ​ ​ ​ ​ Net loss ​ $ (665,364) ​ $ — ​ $ (665,364) Weighted average shares outstanding – Class A ​ ​ 30,000,000 ​ ​ (26,752,096) ​ ​ 3,247,904 Basic and diluted net loss per ordinary share – Class A ​ $ 0.00 ​ $ (0.06) ​ $ (0.06) Weighted average shares outstanding – Class B ​ ​ 8,625,000 ​ ​ (369,643) ​ ​ 8,255,357 Basic and diluted net loss per ordinary share – Class B ​ $ (0.01) ​ $ (0.05) ​ $ (0.06) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Statement of Operations for the period from May 13, 2020 (inception) through December 31, 2020 ​ ​ ​ Net loss ​ $ (8,766,527) ​ $ — ​ $ (8,766,527) Weighted average shares outstanding – Class A ​ ​ 30,387,905 ​ ​ (16,067,054) ​ ​ 14,320,851 Basic and diluted net loss per ordinary share – Class A ​ $ 0.00 ​ $ (0.39) ​ $ (0.39) Weighted average shares outstanding – Class B ​ ​ 7,539,714 ​ ​ 573,549 ​ ​ 8,113,263 Basic and diluted net loss per ordinary share – Class B ​ $ (1.16) ​ $ 0.77 ​ $ (0.39) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Statement of Cash Flows for the period from May 13, 2020 (inception) through September 30, 2020 ​ ​ ​ Supplemental disclosure of non-cash investing and financing activities: ​ ​ ​ ​ ​ ​ ​ ​ ​ Initial value of Class A ordinary shares subject to possible redemption ​ $ 267,994,700 ​ $ (267,994,700) ​ $ — Change in value of Class A ordinary shares subject to possible redemption ​ $ 76,000 ​ $ (76,000) ​ $ — ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Statement of Cash Flows for the period from May 13, 2020 (inception) through December 31, 2020 ​ ​ ​ ​ ​ ​ ​ ​ ​ Supplemental disclosure of non-cash investing and financing activities: ​ ​ ​ ​ ​ ​ Initial value of Class A ordinary shares subject to possible redemption ​ $ 268,023,290 ​ $ (268,023,290) ​ $ — Change in value of Class A ordinary shares subject to possible redemption ​ $ (2,936,346) ​ $ 2,936,346 ​ $ —	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ As ​ ​ ​ ​ ​ ​ ​ ​ Previously ​ ​ ​ ​ ​ ​ Reported Adjustment As Restated Balance Sheet as of March 31, 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ Class A ordinary shares subject to possible redemption ​ $ 274,897,708 ​ $ 30,405,302 $ 305,303,010 Class A ordinary shares ​ ​ 304 ​ ​ (304) ​ ​ — Additional paid-in capital ​ ​ 3,954,702 ​ ​ (3,954,702) ​ ​ — Retained earnings (accumulated deficit) ​ ​ 1,044,237 ​ ​ (26,450,296) ​ ​ (25,406,059) Total shareholders’ equity (deficit) ​ $ 5,000,006 $ (30,405,302) ​ $ (25,405,296) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Balance Sheet as of June 30, 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ Class A ordinary shares subject to possible redemption ​ $ 260,168,806 ​ $ 45,134,204 ​ $ 305,303,010 Class A ordinary shares ​ ​ 451 ​ ​ (451) ​ ​ — Additional paid-in capital ​ ​ 18,683,457 ​ ​ (18,683,457) ​ ​ — Accumulated deficit ​ ​ (13,684,665) ​ ​ (26,450,296) ​ ​ (40,134,961) Total shareholders’ equity (deficit) ​ $ 5,000,006 ​ $ (45,134,204) ​ $ (40,134,198) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Balance Sheet as of September 30, 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ Accrual expenses ​ $ 5,097,232 ​ $ (2,334,252) ​ $ 2,762,980 Total current liabilities ​ ​ 5,177,506 ​ ​ (2,334,252) ​ ​ 2,843,254 Total liabilities ​ ​ 41,104,019 ​ ​ (2,334,252) ​ ​ 38,769,767 Accumulated deficit ​ ​ (40,272,945) ​ ​ 2,334,252 ​ ​ (37,938,693) Total shareholders’ deficit ​ $ (40,272,182) ​ $ 2,334,252 ​ $ (37,937,930) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Statement of Operations for the three months ending September 30, 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ General and administrative expenses ​ $ 2,955,246 ​ $ (2,334,252) ​ $ 620,994 Loss from operations ​ ​ (2,955,246) ​ ​ 2,334,252 ​ ​ (620,994) Net income (loss) ​ ​ (137,984) ​ ​ 2,334,252 ​ ​ 2,196,268 Basic and diluted net income per ordinary share, Class A ​ ​ 0.00 ​ ​ 0.06 ​ ​ 0.06 Basic and diluted net income per ordinary share, Class B ​ $ 0.00 ​ $ 0.06 ​ $ 0.06 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Statement of Operations for the nine months ending September 30, 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ General and administrative expenses ​ $ 6,009,359 ​ $ (2,334,252) ​ $ 3,675,107 Loss from operations ​ ​ (6,009,359) ​ ​ 2,334,252 ​ ​ (3,675,107) Net loss ​ ​ (5,056,122) ​ ​ 2,334,252 ​ ​ (2,721,870) Basic and diluted net loss per ordinary share, Class A ​ ​ (0.13) ​ ​ 0.06 ​ ​ (0.07) Basic and diluted net loss per ordinary share, Class B ​ $ (0.13) ​ $ 0.06 ​ $ (0.07) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Statement of Cash Flows for the three months ended March 31, 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ Supplemental disclosure of non-cash investing and financing activities: ​ ​ ​ ​ ​ ​ ​ ​ ​ Change in value of Class A ordinary shares subject to redemption ​ $ 9,810,764 ​ $ (9,810,764) ​ $ — ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Statement of Cash Flows for the six months ended June 30, 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ Supplemental disclosure of non-cash investing and financing activities: ​ ​ ​ ​ ​ ​ ​ ​ ​ Change in value of Class A ordinary shares subject to redemption ​ $ (4,897,138) ​ $ 4,897,138 ​ $ — ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Statement of Cash Flows for the nine months ended September 30, 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ Cash Flows from Operating Activities: ​ ​ ​ ​ ​ ​ ​ ​ ​ Net Loss ​ $ (5,056,122) ​ $ 2,334,252 ​ $ (2,721,870) Changes in operating assets and liabilities ​ ​ ​ ​ ​ ​ ​ ​ ​ Accrued expenses ​ $ 5,097,013 ​ $ (2,334,252) ​ $ 2,762,761

Summary of Significant Accoun_8

Summary of Significant Accounting Policies (Tables)	8 Months Ended	9 Months Ended
	Dec. 31, 2020	Sep. 30, 2021
CIK0001815805 BROADSTONE ACQUISITION CORP.
Schedule of basic and diluted net loss per ordinary share	​ ​ ​ ​ ​ ​ ​ ​ ​ For the period ​ ​ From May 13, 2020 ​ ​ (inception) through ​ ​ December 31, 2020 ​ ​ Class A ​ Class B Basic and diluted net loss per ordinary share ​ ​ ​ ​ ​ ​ Numerator: ​ ​ ​ ​ ​ ​ Allocation of net loss, as adjusted ​ $ (5,596,126) ​ $ (3,170,401) Denominator: ​ ​ ​ ​ ​ ​ Basic and diluted weighted average shares outstanding ​ ​ 14,320,851 ​ ​ 8,113,263 Basic and diluted net loss per ordinary share ​ $ (0.39) ​ $ (0.39)	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ For the three months ​ For the nine months ended ​ ​ ended September 30, 2021 ​ September 30, 2021 ​ Class A Class B Class A Class B Basic and diluted net loss per ordinary share ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Numerator: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Allocation of net income (loss), as adjusted ​ $ 1,757,014 ​ $ 439,254 ​ $ (2,177,496) ​ $ (544,374) Denominator: ​ ​ ​ ​ ​ ​ ​ ​ ​ Basic and diluted weighted average shares outstanding ​ ​ 30,530,301 ​ 7,632,575 ​ 30,530,301 ​ 7,632,575 Basic and diluted net income (loss), per ordinary share ​ $ 0.06 ​ $ 0.06 ​ $ (0.07) ​ $ (0.07) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ For the period ​ ​ ​ ​ ​ ​ ​ ​ from May 13, 2020 ​ ​ For the three months ​ (inception) through ​ ​ ended September 30, 2020 ​ September 30, 2020 ​ Class A Class B Class A Class B Basic and diluted net loss per ordinary share ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Numerator: ​ ​ ​ ​ ​ ​ ​ Allocation of net loss, as adjusted ​ $ (246,740) ​ $ (407,892) $ (194,223) ​ $ (471,141) Denominator: ​ ​ Basic and diluted weighted average shares outstanding ​ 5,217,391 ​ 8,625,000 3,404,255 8,255,357 Basic and diluted net loss per ordinary share ​ $ (0.05) ​ $ (0.05) $ (0.06) ​ $ (0.06)

Class A Ordinary Shares Subje_2

Class A Ordinary Shares Subject to Possible Redemption (Tables)	8 Months Ended
	Dec. 31, 2020
CIK0001815805 BROADSTONE ACQUISITION CORP.
Summary of reconciliation of ordinary shares subject to possible redemption	​ ​ ​ ​ ​ Gross Proceeds $ 305,303,010 Less: ​ Proceeds allocated to Public Warrants ​ (11,955,000) Class A Ordinary Shares issuance costs ​ (16,173,600) Add: ​ Accretion of carrying value to redemption value ​ 28,128,600 Class A Ordinary Shares subject to possible redemption at December 31, 2020 ​ $ 305,303,010

Fair Value Measurements (Tabl_2

Fair Value Measurements (Tables) - CIK0001815805 BROADSTONE ACQUISITION CORP.	8 Months Ended	9 Months Ended
	Dec. 31, 2020	Sep. 30, 2021
Schedule of assets that are measured at fair value on a recurring basis	​ ​ ​ ​ ​ ​ ​ Description Level December 31, 2020 Assets: ​ ​ ​ ​ ​ Marketable securities held in Trust Account (1) 1 ​ $ 305,311,303 Liabilities: ​ ​ ​ ​ ​ Private Placement Warrants (2) 2 ​ 9,078,787 Public Warrants (2) 1 ​ 17,096,969 (1) The fair value of the marketable securities held in Trust account approximates the carrying amount primarily due to their short-term nature. (2) Measured at fair value on a recurring basis.	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ September 30, Description Level 2021 Assets: ​ Marketable securities held in the Trust Account (1) 1 ​ $ 305,332,346 Liabilities: ​ ​ Private Placement Warrants (2) 2 ​ 8,754,545 Public Warrants (2) 1 ​ 16,486,363 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, Description Level 2020 Assets: ​ Marketable securities held in the Trust Account (1) 1 ​ $ 305,311,303 Liabilities: ​ Private Placement Warrants (2) 2 ​ 9,078,787 Public Warrants (2) 1 ​ 17,096,969 (1) The fair value of the marketable securities held in the Trust account approximates the carrying amount primarily due to their short-term nature. (2) Measured at fair value on a recurring basis.
Schedule of key inputs for warrants	​ ​ ​ ​ ​ ​ ​ September 15, ​ ​ 2020 ​ ​ (Initial Input ​ Measurement) Risk-free interest rate ​ 0.28 % Expected term (years) ​ 5.19 ​ Expected volatility ​ 16.0 % Exercise price ​ $ 11.50 ​ Fair value of Units ​ $ 9.60 ​
Schedule of changes in the fair value of warrant liabilities	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Private ​ ​ Warrant ​ ​ Placement ​ Public ​ Liabilities Fair value as of May 13, 2020 (inception) ​ $ — ​ $ — ​ $ — Initial measurement on September 15, 2020 ​ 6,368,000 ​ 11,955,000 ​ 18,323,000 Initial measurement on October 14, 2020 ​ ​ 83,893 ​ ​ 209,469 ​ ​ 293,362 Change in valuation inputs or other assumptions (1) ​ 2,626,894 ​ 4,932,500 ​ 7,559,394 Fair value as of December 31, 2020 ​ $ 9,078,787 ​ $ 17,096,969 ​ $ 26,175,756 (1) Changes in valuation inputs or other assumptions are recognized in change in fair value of warrant liabilities in the Statement of Operations. (2) Transfers to/from Levels 1, 2 and 3 are recognized at the end of the reporting period. The estimated fair value of the Public Warrants transferred from a Level 3 measurement to a Level 1 measurement and the estimated fair value of the Private Placement Warrants transferred from a Level 3 measurement to a Level 2 measurement during the period ended December 31, 2020 when the Public Warrants were separately listed and traded.	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Private Placement Warrants Public Warrants Warrant Liabilities (2) Fair value as of December 31, 2020 ​ $ 9,078,787 ​ $ 17,096,969 ​ $ 26,175,756 Change in valuation inputs or other assumptions (1) ​ (324,242) ​ (610,606) ​ (934,848) Fair value as of September 30, 2021 ​ $ 8,754,545 ​ $ 16,486,363 ​ $ 25,240,908 (1) Changes in valuation inputs or other assumptions are recognized in change in fair value of warrant liabilities in the Statement of Operations. (2) Transfers to/from Levels 1, 2 and 3 are recognized at the end of the reporting period. The estimated fair value of the Public Warrants transferred from a Level 3 measurement to a Level 1 measurement and the estimated fair value of the Private Placement Warrants transferred from a Level 3 measurement to a Level 2 measurement during the period ended December 31, 2020 when the Public Warrants were separately listed and traded. The measurement for the Private Placement Warrants remains unchanged for the nine months ended September 30, 2021.

Description of Organization, _4

Description of Organization, Business Operations and Basis of Presentation (Details) - CIK0001815805 BROADSTONE ACQUISITION CORP. - USD ($)	Oct. 14, 2020	Sep. 15, 2020	May 19, 2020	Sep. 30, 2020	Dec. 31, 2020	Sep. 30, 2021
Subsidiary, Sale of Stock [Line Items]
Offering cost				$ 5,923,016	$ 6,029,077
Deferred underwriting commissions					10,685,605	$ 10,685,605
Per share value of residual assets in trust account						$ 10
Minimum net tangible assets upon consummation of business combination					5,000,001
Cash					1,600,000	$ 700,000
Working capital deficit					1,600,000	$ (2,000,000)
Condition For Future Business Combination Number Of Businesses Minimum						one
Duration Of Combination Period						24 months
Working Capital Loans
Subsidiary, Sale of Stock [Line Items]
Outstanding balance of related party note					0	$ 0
Sponsor
Subsidiary, Sale of Stock [Line Items]
Proceeds from related party loan					133,000
Contribution from sponsor					$ 25,000
Class A ordinary shares
Subsidiary, Sale of Stock [Line Items]
Common stock, par value					$ 0.0001	$ 0.0001
Initial Public Offering, the Over-Allotment and the Private Placement
Subsidiary, Sale of Stock [Line Items]
Share price						$ 10
Gross proceeds						$ 305,300,000
Percentage of aggregate fair market value of assets						80.00%
Ownership interest to be acquired on post-transaction company						50.00%
Maturity term of U.S. government securities						185 days
IPO
Subsidiary, Sale of Stock [Line Items]
Number of shares issued		30,000,000
Share price		$ 10			$ 10	$ 10
Gross proceeds	$ 5,300,000	$ 300,000,000			$ 305,300,000
Offering cost	292,000	16,600,000			$ 16,935,162
Deferred underwriting commissions	$ 186,000	$ 10,500,000
Percentage of aggregate fair market value of assets					80.00%
Ownership interest to be acquired on post-transaction company					50.00%
Per share value of residual assets in trust account					$ 10
Minimum net tangible assets upon consummation of business combination					$ 5,000,001	$ 5,000,001
Maximum percentage of shares that can be redeemed without prior consent of the Company					15.00%	15.00%
Percentage of shares of stock the Company is obligated to redeem without consummating a business combination					100.00%	100.00%
Maturity term of U.S. government securities					185 days
Threshold trading days to redeem the shares					10 days	10 days
Interest to pay dissolution expenses					$ 100,000	$ 100,000
IPO | Class A ordinary shares
Subsidiary, Sale of Stock [Line Items]
Share price					$ 10
Exercise price of warrants (in dollars per share)					11.50	$ 11.50
Common stock, par value					$ 0.0001	$ 0.0001
Over-allotment option
Subsidiary, Sale of Stock [Line Items]
Number of shares issued		4,500,000			4,500,000	4,500,000
Number of shares agreed to issue	530,301
Gross proceeds	$ 5,300,000
Offering cost	292,000
Deferred underwriting commissions	186,000
Private Placement
Subsidiary, Sale of Stock [Line Items]
Proceeds from issuance of warrants	$ 106,060	$ 8,000,000	$ 8,000,000
Number of warrants to purchase the shares issued (in shares)	106,060	8,000,000	8,000,000
Price of warrants		$ 1
Private Placement | Class A ordinary shares
Subsidiary, Sale of Stock [Line Items]
Exercise price of warrants (in dollars per share)		$ 11.50	$ 11.50

Restatement of Previously Iss_7

Restatement of Previously Issued Financial Statements (Details) - USD ($)	Dec. 31, 2020	Oct. 14, 2020	Sep. 30, 2020	Sep. 15, 2020	Jun. 30, 2020	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2020	Sep. 30, 2020	Dec. 31, 2020	Sep. 30, 2021	May 12, 2020
CIK0001815805 BROADSTONE ACQUISITION CORP.
Restatement of Previously Issued Financial Statements
Minimum Net Tangible Assets Upon Consummation Of Business Combination											$ 5,000,001
STATEMENT OF FINANCIAL POSITION ABSTRACT
Class A common stock subject to possible redemption	$ 305,303,010	$ 305,303,010	$ 300,000,000	$ 300,000,000
Accumulated deficit	(35,216,823)	(27,366,562)	(26,930,154)	(26,977,565)		$ (37,938,693)	$ (40,134,961)	$ (25,406,059)	$ (26,930,154)	$ (26,930,154)	(35,216,823)	$ (37,938,693)
Total Shareholders' Equity (Deficit)	(35,216,060)	(27,310,669)	(26,929,291)	(26,976,702)	$ 14,268	(37,937,930)	(40,134,198)	(25,405,296)	(26,929,291)	(26,929,291)	(35,216,060)	(37,937,930)	$ 0
CONDENSED STATEMENTS OF OPERATIONS
Net loss					$ (10,732)	$ 2,196,268	$ (14,728,902)	$ 9,810,764	(654,632)	(665,364)	(8,766,527)	$ (2,721,870)
As Previously Reported | CIK0001815805 BROADSTONE ACQUISITION CORP.
STATEMENT OF FINANCIAL POSITION ABSTRACT
Class A common stock subject to possible redemption	265,086,944	272,992,338	268,070,700	268,023,290
Class A ordinary shares	402	324	319	320					319	319	402
Additional Paid in Capital	13,765,368	5,859,953	5,664,191	5,711,600					5,664,191	5,664,191	13,765,368
Accumulated deficit	(8,766,527)	(861,137)	(665,364)	(712,775)					(665,364)	(665,364)	(8,766,527)
Total Shareholders' Equity (Deficit)	5,000,006	5,000,003	5,000,009	5,000,008					5,000,009	5,000,009	5,000,006
CONDENSED STATEMENTS OF OPERATIONS
Net loss									(654,632)	(665,364)	(8,766,527)
Supplemental disclosure of non-cash investing and financing activities:
Initial classification of Class A ordinary shares subject to redemption										267,994,700	268,023,290
Change in value of Class A ordinary shares subject to redemption										76,000	(2,936,346)
Revision Adjustments | CIK0001815805 BROADSTONE ACQUISITION CORP.
STATEMENT OF FINANCIAL POSITION ABSTRACT
Class A common stock subject to possible redemption	40,216,066	32,310,672	31,929,300	31,976,710
Class A ordinary shares	(402)	(324)	(319)	(320)					(319)	(319)	(402)
Additional Paid in Capital	(13,765,368)	(5,859,953)	(5,664,191)	(5,711,600)					(5,664,191)	(5,664,191)	(13,765,368)
Accumulated deficit	(26,450,296)	(26,450,395)	(26,264,790)	(26,264,790)					(26,264,790)	(26,264,790)	(26,450,296)
Total Shareholders' Equity (Deficit)	(40,216,066)	$ (32,310,672)	$ (31,929,300)	$ (31,976,710)					$ (31,929,300)	(31,929,300)	(40,216,066)
Supplemental disclosure of non-cash investing and financing activities:
Initial classification of Class A ordinary shares subject to redemption										(267,994,700)	(268,023,290)
Change in value of Class A ordinary shares subject to redemption										$ (76,000)	$ 2,936,346
Class A ordinary shares
CONDENSED STATEMENTS OF OPERATIONS
Weighted average ordinary shares outstanding, Diluted						30,530,301			5,309,618	3,404,255		30,530,301
Basic net income (loss) per ordinary share						$ 0.06			$ (0.05)			$ (0.07)
Diluted income (loss) per ordinary share										$ (0.06)
Class A ordinary shares | CIK0001815805 BROADSTONE ACQUISITION CORP.
CONDENSED STATEMENTS OF OPERATIONS
Weighted average ordinary shares outstanding, Basic						30,530,301			5,309,618	3,404,255	14,320,851	30,530,301
Weighted average ordinary shares outstanding, Diluted						30,530,301			5,309,618	3,247,904	14,320,851	30,530,301
Basic net income (loss) per ordinary share						$ 0.06			$ (0.05)	$ (0.06)	$ (0.39)	$ (0.07)
Diluted income (loss) per ordinary share						$ 0.06			$ (0.05)	$ (0.06)	$ (0.39)	$ (0.07)
Class A ordinary shares | As Previously Reported | CIK0001815805 BROADSTONE ACQUISITION CORP.
CONDENSED STATEMENTS OF OPERATIONS
Weighted average ordinary shares outstanding, Basic									30,000,000	30,000,000	30,387,905
Weighted average ordinary shares outstanding, Diluted									30,000,000	30,000,000	30,387,905
Basic net income (loss) per ordinary share									$ 0	$ 0	$ 0
Diluted income (loss) per ordinary share									$ 0	$ 0	$ 0
Class A ordinary shares | Revision Adjustments | CIK0001815805 BROADSTONE ACQUISITION CORP.
CONDENSED STATEMENTS OF OPERATIONS
Weighted average ordinary shares outstanding, Basic									(24,690,382)	(26,752,096)	(16,067,054)
Weighted average ordinary shares outstanding, Diluted									(24,690,382)	(26,752,096)	(16,067,054)
Basic net income (loss) per ordinary share									$ (0.05)	$ (0.06)	$ (0.39)
Diluted income (loss) per ordinary share									$ (0.05)	$ (0.06)	$ (0.39)
Class B ordinary shares
CONDENSED STATEMENTS OF OPERATIONS
Weighted average ordinary shares outstanding, Diluted						7,632,575			8,625,000	8,255,357		7,632,575
Basic net income (loss) per ordinary share						$ 0.06			$ (0.05)			$ (0.07)
Diluted income (loss) per ordinary share										$ (0.06)
Class B ordinary shares | CIK0001815805 BROADSTONE ACQUISITION CORP.
STATEMENT OF FINANCIAL POSITION ABSTRACT
Class A ordinary shares	$ 763					$ 763					$ 763	$ 763
CONDENSED STATEMENTS OF OPERATIONS
Weighted average ordinary shares outstanding, Basic						7,632,575			8,625,000	8,255,357	8,113,263	7,632,575
Weighted average ordinary shares outstanding, Diluted						7,632,575			8,625,000	8,255,357	8,113,263	7,632,575
Basic net income (loss) per ordinary share						$ 0.06			$ (0.05)	$ (0.06)	$ (0.39)	$ (0.07)
Diluted income (loss) per ordinary share						$ 0.06			$ (0.05)	$ (0.06)	$ (0.39)	$ (0.07)
Class B ordinary shares | As Previously Reported | CIK0001815805 BROADSTONE ACQUISITION CORP.
CONDENSED STATEMENTS OF OPERATIONS
Weighted average ordinary shares outstanding, Basic									8,625,000	8,625,000	7,539,714
Weighted average ordinary shares outstanding, Diluted									8,625,000	8,625,000	7,539,714
Basic net income (loss) per ordinary share									$ (0.01)	$ (0.01)	$ (1.16)
Diluted income (loss) per ordinary share									$ (0.01)	$ (0.01)	$ (1.16)
Class B ordinary shares | Revision Adjustments | CIK0001815805 BROADSTONE ACQUISITION CORP.
CONDENSED STATEMENTS OF OPERATIONS
Weighted average ordinary shares outstanding, Basic									0	(369,643)	573,549
Weighted average ordinary shares outstanding, Diluted									0	(369,643)	573,549
Basic net income (loss) per ordinary share									$ (0.04)	$ (0.05)	$ 0.77
Diluted income (loss) per ordinary share									$ (0.04)	$ (0.05)	$ 0.77

Summary of Significant Accoun_9

Summary of Significant Accounting Policies (Details) - CIK0001815805 BROADSTONE ACQUISITION CORP. - USD ($)	2 Months Ended	3 Months Ended				5 Months Ended	8 Months Ended	9 Months Ended
	Jun. 30, 2020	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2020	Sep. 30, 2020	Dec. 31, 2020	Sep. 30, 2021
Subsidiary, Sale of Stock [Line Items]
Cash equivalents held in Trust Account		$ 305,332,346					$ 305,311,303	$ 305,332,346
Net Asset Value Per Share		$ 1					$ 1	$ 1
Federal Deposit Insurance Company coverage		$ 250,000						$ 250,000
Federal Depository Insurance Coverage							$ 250,000
Unrecognized tax benefits		0					0	0
Amounts accrued for the payment of interest and penalties		0					$ 0	0
Income tax expense (benefit)								$ 0
Earnings Per Share [Abstract]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount							23,371,211	23,371,211
Investment income earned in Trust Account		4,611			$ 2,200	$ 2,200	$ 8,293	$ 21,043
Net Income (Loss) Attributable to Parent	$ (10,732)	2,196,268	$ (14,728,902)	$ 9,810,764	(654,632)	(665,364)	(8,766,527)	(2,721,870)
General and administrative expenses		$ 620,994			732,832	743,564	$ 922,064	$ 3,675,107
Classification Of Stock To Temporary Equity Shares							30,530,301
As Previously Reported
Earnings Per Share [Abstract]
Net Income (Loss) Attributable to Parent					$ (654,632)	$ (665,364)	$ (8,766,527)
IPO
Earnings Per Share [Abstract]
General and administrative expenses							677,570
Offering costs charged to stockholder's equity							$ 16,173,600
Class A ordinary shares
Subsidiary, Sale of Stock [Line Items]
Share subject to possible redemption (in shares)		30,530,301					30,530,301	30,530,301
Class A ordinary shares | As Previously Reported
Subsidiary, Sale of Stock [Line Items]
Share subject to possible redemption (in shares)							26,508,694
Public Warrants | Class A ordinary shares
Earnings Per Share [Abstract]
Proceeds allocated to common stock							$ 16,935,163
Private Placement Warrants | Class A ordinary shares
Earnings Per Share [Abstract]
Proceeds allocated to common stock							$ 1,654,167

Summary of Significant Accou_10

Summary of Significant Accounting Policies - Net Income (Loss) Per Ordinary Share (Details) - USD ($)	3 Months Ended		5 Months Ended	8 Months Ended	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2020	Dec. 31, 2020	Sep. 30, 2021
Class A ordinary shares
Denominator:
Weighted average ordinary shares outstanding, Diluted	30,530,301	5,309,618	3,404,255		30,530,301
Basic net income (loss) per ordinary share	$ 0.06	$ (0.05)			$ (0.07)
Diluted income (loss) per ordinary share			$ (0.06)
Class A ordinary shares | CIK0001815805 BROADSTONE ACQUISITION CORP.
Numerator:
Allocation of net loss, as adjusted	$ 1,757,014	$ (246,740)	$ (194,223)	$ (5,596,126)	$ (2,177,496)
Denominator:
Weighted average ordinary shares outstanding, Basic	30,530,301	5,309,618	3,404,255	14,320,851	30,530,301
Weighted average ordinary shares outstanding, Diluted	30,530,301	5,309,618	3,247,904	14,320,851	30,530,301
Basic net income (loss) per ordinary share	$ 0.06	$ (0.05)	$ (0.06)	$ (0.39)	$ (0.07)
Diluted income (loss) per ordinary share	$ 0.06	$ (0.05)	$ (0.06)	$ (0.39)	$ (0.07)
Class B ordinary shares
Denominator:
Weighted average ordinary shares outstanding, Diluted	7,632,575	8,625,000	8,255,357		7,632,575
Basic net income (loss) per ordinary share	$ 0.06	$ (0.05)			$ (0.07)
Diluted income (loss) per ordinary share			$ (0.06)
Class B ordinary shares | CIK0001815805 BROADSTONE ACQUISITION CORP.
Numerator:
Allocation of net loss, as adjusted	$ 439,254	$ (407,892)	$ (471,141)	$ (3,170,401)	$ (544,374)
Denominator:
Weighted average ordinary shares outstanding, Basic	7,632,575	8,625,000	8,255,357	8,113,263	7,632,575
Weighted average ordinary shares outstanding, Diluted	7,632,575	8,625,000	8,255,357	8,113,263	7,632,575
Basic net income (loss) per ordinary share	$ 0.06	$ (0.05)	$ (0.06)	$ (0.39)	$ (0.07)
Diluted income (loss) per ordinary share	$ 0.06	$ (0.05)	$ (0.06)	$ (0.39)	$ (0.07)

Summary of Significant Accou_11

Summary of Significant Accounting Policies - Class A Ordinary Shares subject to possible redemption (Details) - CIK0001815805 BROADSTONE ACQUISITION CORP. - USD ($)	3 Months Ended	8 Months Ended
	Sep. 30, 2020	Dec. 31, 2020	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021
Temporary Equity [Line Items]
Accretion of carrying value to redemption value	$ 27,943,094	$ 28,128,600
Class A ordinary shares
Temporary Equity [Line Items]
Class A Ordinary Shares subject to possible redemption		$ 305,303,010	$ 305,303,010	$ 305,303,010	$ 305,303,010

Initial Public Offering (Deta_2

Initial Public Offering (Details) - CIK0001815805 BROADSTONE ACQUISITION CORP. - USD ($)	Oct. 14, 2020	Sep. 15, 2020	Sep. 30, 2020	Dec. 31, 2020	Sep. 30, 2021
Subsidiary, Sale of Stock [Line Items]
Offering cost			$ 5,923,016	$ 6,029,077
Deferred underwriting commissions				$ 10,685,605	$ 10,685,605
Number of warrants in a unit		0.33
Class A ordinary shares
Subsidiary, Sale of Stock [Line Items]
Common stock, par value				$ 0.0001	$ 0.0001
Number of shares in a unit		1
IPO
Subsidiary, Sale of Stock [Line Items]
Number of shares issued		30,000,000
Share price		$ 10		$ 10	10
Gross proceeds	$ 5,300,000	$ 300,000,000		$ 305,300,000
Offering cost	292,000	16,600,000		$ 16,935,162
Deferred underwriting commissions	$ 186,000	$ 10,500,000
IPO | Class A ordinary shares
Subsidiary, Sale of Stock [Line Items]
Share price				$ 10
Common stock, par value				$ 0.0001	$ 0.0001
Number of shares in a unit				1	1
Number of warrants in a unit				1	0.5
Number of shares per warrant				1	1
Exercise price of warrants (in dollars per share)				$ 11.50	$ 11.50

Related Party Transactions - _4

Related Party Transactions - Founder share (Details) - CIK0001815805 BROADSTONE ACQUISITION CORP.	Oct. 25, 2020shares	Oct. 14, 2020shares	May 19, 2020USD ($)D$ / sharesshares	Jun. 30, 2020USD ($)	Dec. 31, 2020USD ($)$ / shares	Sep. 30, 2021$ / shares
Related Party Transaction [Line Items]
Aggregate purchase price | $				$ 25,000	$ 25,000
Class B ordinary shares
Related Party Transaction [Line Items]
Shares forfeited	992,425
Ordinary shares, par value | $ / shares					$ 0.0001	$ 0.0001
Class B ordinary shares | Founder | Sponsor
Related Party Transaction [Line Items]
Aggregate purchase price | $			$ 25,000
Share price | $ / shares			$ 0.003
Number of shares agreed to issue			8,625,000
Ordinary shares, par value | $ / shares			$ 0.0001
Maximum shares subject to forfeiture			1,125,000
Percentage of issued and outstanding shares after the Initial Public Offering collectively held by initial stockholders			20.00%
Threshold period for not to transfer, assign or sell any of their shares or warrants after the completion of the initial business combination			1 year
Stock price trigger to transfer, assign or sell any shares or warrants of the company, after the completion of the initial business combination (in dollars per share) | $ / shares			$ 12
Threshold trading days for transfer, assign or sale of shares or warrants, after the completion of the initial business combination | D			20
Threshold consecutive trading days for transfer, assign or sale of shares or warrants, after the completion of the initial business combination | D			30
Threshold period after the business combination in which the 20 trading days within any 30 trading day period commences			150 days
Over-allotment option
Related Party Transaction [Line Items]
Number of shares agreed to issue		530,301
Over-allotment option | Class B ordinary shares
Related Party Transaction [Line Items]
Number of shares agreed to issue		530,301

Related Party Transactions - _5

Related Party Transactions - Private placement warrants (Details) - Private Placement - CIK0001815805 BROADSTONE ACQUISITION CORP. - USD ($)	Oct. 14, 2020	Sep. 15, 2020	May 19, 2020
Related Party Transaction [Line Items]
Number of warrants to purchase the shares issued (in shares)	106,060	8,000,000	8,000,000
Price of warrants (in dollars per share)			$ 1
Proceeds from Issuance of Warrants	$ 106,060	$ 8,000,000	$ 8,000,000
Threshold Period For Not To Transfer, Assign Or Sell Any Shares Or Warrants After Completion Of Initial Business Combination			30 days
Class A ordinary shares
Related Party Transaction [Line Items]
Number of shares issuable per warrant (in shares)			1
Exercise price of warrants (in dollars per share)		$ 11.50	$ 11.50

Related Party Transactions - _6

Related Party Transactions - Sponsor loan, Working capital loans, Administrative support agreement (Details) - CIK0001815805 BROADSTONE ACQUISITION CORP. - USD ($)	May 19, 2020	Sep. 30, 2021	Dec. 31, 2020	Sep. 30, 2021
Related Party Transaction [Line Items]
Borrowings outstanding		$ 0	$ 0	$ 0
Sponsor
Related Party Transaction [Line Items]
Maximum borrowing capacity of related party promissory note	$ 300,000
Proceeds from related party loan	133,000
Working Capital Loans
Related Party Transaction [Line Items]
Maximum loans convertible into warrants	$ 1,500,000
Price of warrants (in dollars per share)	$ 1
Outstanding balance of related party note		0	0	0
Administrative Support Agreement
Related Party Transaction [Line Items]
Expenses per month		10,000	10,000	10,000
Administrative Support Agreement | Accounts Payable [Member]
Related Party Transaction [Line Items]
Amount available for borrowings				30,000
Administrative Support Agreement | General and Administrative Expense [Member]
Related Party Transaction [Line Items]
Amount available for borrowings		$ 30,000	$ 37,000	$ 90,000

Commitments and Contingencies_3

Commitments and Contingencies (Details) - CIK0001815805 BROADSTONE ACQUISITION CORP.	Oct. 26, 2021USD ($)	Jun. 10, 2021USD ($)$ / sharesshares	Oct. 14, 2020shares	Sep. 15, 2020shares	Dec. 31, 2020USD ($)item$ / sharesshares	Sep. 30, 2021USD ($)item$ / sharesshares
Subsidiary, Sale of Stock [Line Items]
Maximum number of demands for registration of securities | item					3	3
Percentage of outstanding shares that will be exchanged upon effectiveness of the Merger		100.00%
Cash underwriting discount per unit | $ / shares					$ 0.20	$ 0.20
Payment of underwriter discount | $					$ 100,000	$ 100,000
Reimbursement of certain expenses | $					$ 390,000	$ 390,000
Deferred fee per unit | $ / shares					$ 0.35	$ 0.35
Deferred underwriting fee payable | $					$ 10,700,000	$ 10,700,000
Cash underwriting discount paid | $					$ 6,000,000	$ 6,000,000
Subscription Agreements [Member] | PIPE Investors [Member]
Subsidiary, Sale of Stock [Line Items]
Number of shares agreed to issue | shares		9,400,000
Common stock, par value | $ / shares		$ 0.0001
Price per share | $ / shares		$ 10
Proceeds from Issuance of Common Stock | $		$ 94,000,000
Convertible Senior Secured Notes Subscription Agreement
Subsidiary, Sale of Stock [Line Items]
Aggregate principal amount | $	$ 200,000,000
Cash interest rate (as a percent)	7.00%
Paid-in-kind interest rate (as a percent)	9.00%
Class of Warrant or Right, Number of Securities Called by Warrants or Rights | shares						4,000,000
Number of shares per warrant | shares						1
Exercise price | $ / shares						$ 11.50
Over-allotment option
Subsidiary, Sale of Stock [Line Items]
Underwriting option period					45 days	45 days
Sale of units in initial public offering, gross (in shares ) | shares				4,500,000	4,500,000	4,500,000
Number of shares agreed to issue | shares			530,301
Class B ordinary shares
Subsidiary, Sale of Stock [Line Items]
Common stock, par value | $ / shares					$ 0.0001	$ 0.0001
Class B ordinary shares | Over-allotment option
Subsidiary, Sale of Stock [Line Items]
Number of shares agreed to issue | shares			530,301

Shareholders' Deficit - Preferr

Shareholders' Deficit - Preferred Stock (Details) - CIK0001815805 BROADSTONE ACQUISITION CORP. - $ / shares	Sep. 30, 2021	Dec. 31, 2020
Preferred Stock, Shares Authorized	1,000,000	1,000,000
Preferred stock, par value	$ 0.0001	$ 0.0001
Preferred Stock, Shares Issued	0	0
Preferred Stock, Shares Outstanding	0	0

Shareholders' Deficit - Common

Shareholders' Deficit - Common Stock (Details) - CIK0001815805 BROADSTONE ACQUISITION CORP. - $ / shares	8 Months Ended	9 Months Ended	12 Months Ended
	Dec. 31, 2020	Sep. 30, 2021	Dec. 31, 2020
Class of Stock [Line Items]
Number of Class A common stock issued upon conversion of each share (in shares)	1	1
Class A ordinary shares
Class of Stock [Line Items]
Common stock, shares authorized	200,000,000	200,000,000	200,000,000
Common stock, par value	$ 0.0001	$ 0.0001	$ 0.0001
Common stock, shares issued	0	0	0
Common stock, shares outstanding	0	0	0
Common Stock Shares Outstanding Including Temporary Equity		30,530,301	30,530,301
Common Stock Shares Issued Including Temporary Equity	30,530,301	30,530,301	30,530,301
Share subject to possible redemption (in shares)	30,530,301	30,530,301	30,530,301
Class A ordinary shares | As Previously Reported
Class of Stock [Line Items]
Share subject to possible redemption (in shares)	26,508,694		26,508,694
Class B ordinary shares
Class of Stock [Line Items]
Common stock, shares authorized	20,000,000	20,000,000	20,000,000
Common stock, par value	$ 0.0001	$ 0.0001	$ 0.0001
Common stock, number of votes per share	$ 1	$ 1	$ 1
Common stock, shares issued	7,632,575	7,632,575	7,632,575
Common stock, shares outstanding	7,632,575	7,632,575	7,632,575
Common stock, shares subject to forfeiture, as a percent of issued and outstanding shares (as a percent)	20.00%		20.00%
Number of common stock issuable pursuant to Initial Business Combination, as a percent of outstanding shares (in shares)	20.00%	20.00%

Class A Ordinary Shares Subje_3

Class A Ordinary Shares Subject to Possible Redemption (Details) - CIK0001815805 BROADSTONE ACQUISITION CORP. - USD ($)	3 Months Ended	8 Months Ended
	Sep. 30, 2020	Dec. 31, 2020	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021
Temporary Equity [Line Items]
Accretion of Class A ordinary Shares to redemption amount	$ (27,943,094)	$ (28,128,600)
Class A ordinary shares
Temporary Equity [Line Items]
Class A Ordinary Shares subject to possible redemption at December 31, 2020		$ 305,303,010	$ 305,303,010	$ 305,303,010	$ 305,303,010
Common stock, par value		$ 0.0001	$ 0.0001
Common stock, shares authorized		200,000,000	200,000,000
Share subject to possible redemption (in shares)		30,530,301	30,530,301
Class A Redeemable Common Stock
Temporary Equity [Line Items]
Gross Proceeds		$ 305,303,010
Proceeds allocated to Public Warrants		(11,955,000)
Class A Ordinary Shares issuance costs		(16,173,600)
Accretion of Class A ordinary Shares to redemption amount		28,128,600
Class A Ordinary Shares subject to possible redemption at December 31, 2020		$ 305,303,010
Share subject to possible redemption (in shares)		30,530,301
Non Redeemable ordinary shares
Temporary Equity [Line Items]
Common stock, par value		$ 0.0001
Common stock, shares authorized		200,000,000
Common stock, number of votes per share		$ 1

Warrant Liabilities (Details)_2

Warrant Liabilities (Details) - CIK0001815805 BROADSTONE ACQUISITION CORP. - $ / shares	8 Months Ended	9 Months Ended
	Dec. 31, 2020	Sep. 30, 2021	Sep. 15, 2020
Class of Warrant or Right [Line Items]
Threshold trading days for calculating volume-weighted average price	10 days	10 days
Maximum redemption feature per warrant	0.361	0.361
Class A ordinary shares
Class of Warrant or Right [Line Items]
Threshold minimum percentage of gross proceeds on total equity proceeds (as a percent)	60.00%	60.00%
Threshold trading days for calculating Market Value	10 days	10 days
Class A ordinary shares | Maximum [Member]
Class of Warrant or Right [Line Items]
Newly Issued Price (in dollars per share)	$ 9.20	$ 9.20
Public Warrants
Class of Warrant or Right [Line Items]
Exercise price of warrants (in dollars per share)	$ 11.50	$ 11.50	$ 0.796
Warrants exercisable term after the completion of a business combination	30 days	30 days
Warrants exercisable term from the closing of the public offering	12 months	12 months
Threshold maximum period for filing registration statement after business combination	15 days	15 days
Threshold maximum period for registration statement to become effective after business combination	60 days	60 days
Warrant expiry term	5 years	5 years
Public Warrants | Redemption of Warrants when price per share of Class A common stock equals or exceeds $18.00
Class of Warrant or Right [Line Items]
Redemption price per warrant (in dollars per share)	$ 0.01	$ 0.01
Minimum threshold written notice period for redemption of public warrants	30 days	30 days
Stock price trigger for redemption of warrants (in dollars per share)	$ 18	$ 18
Threshold trading days for redemption of warrants	20 days	20 days
Threshold consecutive trading days for redemption of warrants	30 days	30 days
Newly Issued Price (in dollars per share)	$ 18
Adjustment of exercise price of warrants based on market value and newly issued price (as a percent)	115.00%	115.00%
Public Warrants | Redemption of Warrants when price per share of Class A common stock equals or exceeds $10.00
Class of Warrant or Right [Line Items]
Redemption price per warrant (in dollars per share)	$ 0.10	$ 0.10
Minimum threshold written notice period for redemption of public warrants		30 days
Stock price trigger for redemption of warrants (in dollars per share)	$ 10	$ 10
Threshold trading days for redemption of warrants		20 days
Threshold consecutive trading days for redemption of warrants	30 days	30 days
Threshold number of trading days before sending notice of redemption to warrant holders	30 days	3 days
Adjustment of exercise price of warrants based on market value and newly issued price (as a percent)	180.00%	180.00%
Private Placement Warrants
Class of Warrant or Right [Line Items]
Exercise price of warrants (in dollars per share)			$ 0.797
Threshold period for not to transfer, assign or sell any of their shares or warrants after the completion of the initial business combination		30 days
Private Placement Warrants | Redemption of Warrants when price per share of Class A common stock is less than $18.00
Class of Warrant or Right [Line Items]
Stock price trigger for redemption of warrants (in dollars per share)	$ 18	$ 18
Threshold trading days for redemption of warrants	20 days	20 days
Threshold consecutive trading days for redemption of warrants	30 days	30 days

Fair Value Measurements (Deta_2

Fair Value Measurements (Details) - CIK0001815805 BROADSTONE ACQUISITION CORP. - USD ($)	Sep. 30, 2021	Dec. 31, 2020
Fair Value Measurements
Marketable securities held in the Trust Account	$ 305,332,346	$ 305,311,303
Warrant liability	25,240,908	26,175,756
Level 1
Fair Value Measurements
Marketable securities held in the Trust Account	305,332,346	305,311,303
Level 1 | Recurring
Fair Value Measurements
Marketable securities held in the Trust Account		305,311,303
Private Placement Warrants | Level 2
Fair Value Measurements
Warrant liability	8,754,545	9,078,787
Private Placement Warrants | Level 2 | Recurring
Fair Value Measurements
Warrant liability		9,078,787
Public Warrants | Level 1
Fair Value Measurements
Warrant liability	$ 16,486,363	17,096,969
Public Warrants | Level 1 | Recurring
Fair Value Measurements
Warrant liability		$ 17,096,969

Fair Value Measurements - Measu

Fair Value Measurements - Measurement input (Details) - CIK0001815805 BROADSTONE ACQUISITION CORP. $ / shares in Units, $ in Millions	Sep. 15, 2020USD ($)$ / sharesshares	Sep. 30, 2021USD ($)$ / shares	Dec. 31, 2020USD ($)$ / shares
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Number of warrants in a unit | shares	0.33
Probability for Consummation of Business Combination | $ / shares	$ 18
Risk-free interest rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Measurement input	0.28
Expected term (years)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Measurement input	5.19
Expected volatility
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Measurement input	16
Exercise price
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Measurement input	11.50
Fair value of Units
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Measurement input	9.60
Contractual term
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Measurement input term	5 years
Expected term, assumed holding period
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Measurement input term	5 years
Private Placement Warrants
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Price per warrant | $ / shares	$ 0.797
Aggregate values | $	$ 6.4	$ 8.8	$ 9.1
Public Warrants
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Number of warrants in a unit | shares	0.5
Price per warrant | $ / shares	$ 0.796	$ 11.50	$ 11.50
Aggregate values | $	$ 12	$ 16.5	$ 17.1
Class A ordinary shares
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Number of shares in a unit | shares	1

Fair Value Measurements - Cha_2

Fair Value Measurements - Changes in the fair value of warrant liabilities (Details) - CIK0001815805 BROADSTONE ACQUISITION CORP. - USD ($)	8 Months Ended	9 Months Ended
	Dec. 31, 2020	Sep. 30, 2021	Sep. 15, 2020
Fair Value Measurements
Fair value as of December 31, 2020		$ 26,175,756
Initial measurement on September 15, 2020	$ 18,323,000
Initial measurement on October 14, 2020	293,362
Change in valuation inputs or other assumptions(1)	7,559,394	(934,848)
Fair value as of September 30, 2021	26,175,756	25,240,908
Private Placement Warrants
Fair Value Measurements
Fair value as of December 31, 2020		9,078,787
Initial measurement on September 15, 2020	6,368,000
Initial measurement on October 14, 2020	83,893
Change in valuation inputs or other assumptions(1)	2,626,894	(324,242)
Fair value as of September 30, 2021	9,078,787	8,754,545
Warrants and Rights Outstanding	9,100,000	8,800,000	$ 6,400,000
Public Warrants
Fair Value Measurements
Fair value as of December 31, 2020		17,096,969
Initial measurement on September 15, 2020	11,955,000
Initial measurement on October 14, 2020	209,469
Change in valuation inputs or other assumptions(1)	4,932,500	(610,606)
Fair value as of September 30, 2021	17,096,969	16,486,363
Warrants and Rights Outstanding	$ 17,100,000	$ 16,500,000	$ 12,000,000