Administrative Expenses
Administrative expenses decreased by £424 thousand, or 2%, from £23,890 thousand during the six months ended June 30, 2021 to £23,466 thousand during the six months ended June 30, 2022. This decrease was primarily due to the differing nature of the share-based payment expense incurred. For the six months ended June 30, 2022 this charge related primarily to the modification of EMI Option Agreements, whereas during the six months ended June 30, 2021 this related to the issuance of shares to American Airlines. Administrative expenses also reflect the costs of being a U.S. public company listed on the NYSE, including the cost of additional personnel and the implementation of procedures and processes to address public company regulatory requirements and customary practices. Please see Note 5 to our unaudited condensed consolidated interim financial statements included elsewhere in this filing for more information.
Related Party Administrative Expenses
Related party administrative expenses decreased by £127 thousand, or 100%, from £127 thousand during the six months ended June 30, 2021 to nil during the six months ended June 30, 2022. This decrease was primarily due to the expiration of the Intercompany Services Agreement with Incubator on December 31, 2021.
Other Operating Income
Operating income decreased by £6,279 thousand, or 65%, from £9,686 thousand during the six months ended June 30, 2021 to £3,407 thousand during the six months ended June 30, 2022. In 2020, we were awarded a government grant from the United Kingdom’s Aerospace Technology Institute, administered by Innovate U.K. The grant period commenced on October 1, 2020. The receivable installments are recognized in other operating income as the matching sanctioned expenditure is incurred, with a retrospective claim process. For the six months ended June 30, 2022, income from government grants totalled £1,214 thousand and R&D tax credits totalled £2,193 thousand compared to £8,999 thousand and £687 thousand, respectively, for the six months ended June 30, 2021. This reflects the timing of matching sanctioned expenditure, with the grant period scheduled to end by December 31, 2022.
Finance Income
Finance income increased by £42,497 thousand, from nil during the six months ended June 30, 2021 to £42,497 thousand during the six months ended June 30, 2022. This reflects fair value gains relating to the market value of warrants and Convertible Senior Secured Notes
Finance Costs
Finance costs increased by £20,026 thousand, from £37 thousand during the six months ended June 30, 2021 to £20,063 thousand during the six months ended June 30, 2022. This reflects interest payments on the Convertible Senior Secured Notes in addition to foreign exchange movements.
Related Party Finance Costs
Related party finance costs decreased by £483 thousand, or 100%, from £483 thousand during six months ended June 30, 2021 to nil during the six months ended June 30, 2022. This decrease was primarily due to the repayment of borrowings from Imagination.
Off-Balance Sheet Arrangements
We did not have during the period presented, and we do not currently have, any off-balance sheet financing arrangements or any relationships with unconsolidated entities or financial partnerships,