The information in this document is not complete and may be changed. BP p.l.c. may not sell the securities offered by this document until the registration statement filed with the Securities and Exchange Commission, of which this document is a part, is declared effective. This document shall not constitute an offer to sell or the solicitation of an offer to buy nor shall there be any sale of these securities in any jurisdiction where such offer, solicitation or sale is not permitted.
PRELIMINARY—SUBJECT TO COMPLETION—DATED JANUARY 31, 2022

On December 19, 2021, BP p.l.c., a public limited company incorporated under the laws of England and Wales (“BP”), BP Midstream Partners Holdings LLC, a Delaware limited liability company and indirect wholly owned subsidiary of BP (“Holdings”), BP Midstream RTMS LLC, a Delaware limited liability company and wholly owned subsidiary of Holdings (“Merger Sub”), BP Midstream Partners LP, a Delaware limited partnership (“BPMP”), and BP Midstream Partners GP LLC, a Delaware limited liability company and the general partner of BPMP (the “General Partner”), entered into an Agreement and Plan of Merger (the “Merger Agreement”). Pursuant to the Merger Agreement, Merger Sub will merge with and into BPMP, with BPMP surviving as an indirect wholly owned subsidiary of BP (the “Merger”).
Pursuant to the Merger Agreement, each outstanding common unit representing limited partner interests in BPMP (“BPMP Common Units”) immediately prior to the effective time of the Merger, other than BPMP Common Units held directly or indirectly by BP and its subsidiaries (all such BPMP Common Units held by persons other than BP or its subsidiaries, the “BPMP Public Common Units,” and the holders of such units, the “BPMP Public Unitholders”), will be converted into, and will thereafter represent only, the right to receive 0.575 (the “Exchange Ratio”) of one American depositary share of BP, each representing a beneficial interest in six ordinary shares of BP, par value $0.25 per share (“BP ADSs,” and the BP ADSs to be issued in the Merger, the “Merger Consideration”) and following such conversion, such BPMP Public Common Units will automatically be cancelled and cease to exist (“Cancelled” or the “Cancellation”). Immediately following the consummation of the Merger, the interests in BPMP owned by BP and its subsidiaries will remain outstanding as limited partner interests in the surviving entity, and the General Partner will continue to own the non-economic general partner interest and Incentive Distribution Rights in the surviving entity.
On December 19, 2021, the board of directors of BP (the “BP Board”), through its authorized delegates, determined that the Merger Agreement and the transactions contemplated thereby, including the Merger and the issuance of the Merger Consideration, are advisable, fair and reasonable to and most likely to promote the success of BP for the benefits of its stockholders as a whole, approved the execution, delivery and performance of the Merger Agreement and the consummation of the transactions contemplated thereby, including the Merger and the issuance of Merger Consideration in the Merger, and authorized and empowered BP to enter into the Merger Agreement and to consummate the transactions contemplated thereby (including the Merger) on the terms and subject to the conditions set forth in the Merger Agreement.
On December 19, 2021, the conflicts committee (the “BPMP Conflicts Committee”) of the board of directors of the General Partner (the “GP Board”), by unanimous vote, in good faith, (i) determined that the Transaction Documents and the transactions contemplated thereby, including the Merger, are not opposed to the interest of BPMP or the BPMP Public Unitholders, (ii) approved the Transaction Documents and the transactions contemplated thereby, including the Merger (the foregoing constituting “Special Approval” as defined in the Partnership Agreement), (iii) approved, on behalf of the GP Board, the Transaction Documents, the execution, delivery and performance of the Transaction Documents and the transactions contemplated thereby, including the Merger, and (iv) directed, on behalf of the GP Board, that the Merger Agreement and the transactions contemplated thereby, including the Merger, be submitted to a vote of the holders of BPMP Common Units pursuant to the Partnership Agreement and authorized the holders of the BPMP Common Units to act by written consent pursuant to the Partnership Agreement.
Pursuant to the Partnership Agreement, the approval of the Merger Agreement and the Merger by BPMP requires the affirmative vote or consent of the holders of a majority of the outstanding BPMP Common Units (the “Required Limited Partner Written Consent”). BPMP has entered into a Support Agreement, dated as of December 19, 2021 (the “Support Agreement”), with Holdings, pursuant to which Holdings has irrevocably and unconditionally agreed to deliver a written consent covering all of the BPMP Common Units beneficially owned by it in favor of the Merger, the approval of the Merger Agreement and the transactions contemplated by the Merger Agreement and any other matter necessary or desirable for the consummation of the transactions contemplated by the Merger Agreement (the “Support Written Consent”), within two business days following the effectiveness of the registration statement of which this consent statement/prospectus forms a part. As of January 26, 2022, Holdings beneficially owned 56,956,712 BPMP Common Units, which represents approximately 54.4% of the outstanding BPMP Common Units. Accordingly, the delivery of the Support Written Consent by Holdings will be sufficient to approve the Merger Agreement and the transactions contemplated thereby, including the Merger, on behalf of holders of the BPMP Common Units (the “BPMP Unitholders”), without the vote or consent of any of the BPMP Public Unitholders.
The GP Board has set as the record date (the “Record Date”) for determining the BPMP Unitholders entitled to execute and deliver written consents with respect to the Merger. If you were a record holder of outstanding BPMP Common Units as of the close of business on the Record Date, you may complete, date and sign the enclosed written consent and promptly return it to BPMP. See the section titled “Written Consents of BPMP Unitholders” beginning on page 22 of this consent statement/prospectus.
This consent statement/prospectus provides you with detailed information about the proposed Merger and related matters. BP and BPMP both encourage you to read the entire document carefully. In particular, please read “Risk Factors“ beginning on page 14 of this consent statement/prospectus for a discussion of risks relevant to the Merger, the tax consequences of the Merger and owning the BP ADSs received in the Merger, an investment in BP ADSs and BP’s business following the Merger.
BP ADSs are listed on the New York Stock Exchange (“NYSE”) under the symbol “BP” and BPMP Common Units are listed on the NYSE under the symbol “BPMP”.
On behalf of the GP Board,
J. Douglas Sparkman
Chairman of the Board of Directors
BP Midstream Partners GP LLC
NEITHER THE SECURITIES AND EXCHANGE COMMISSION NOR ANY STATE SECURITIES COMMISSION HAS APPROVED OR DISAPPROVED OF THE SECURITIES TO BE ISSUED IN CONNECTION WITH THE MERGER OR DETERMINED THAT THIS CONSENT STATEMENT/PROSPECTUS IS ACCURATE OR COMPLETE. ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.
This consent statement/prospectus is dated , 2022 and is first being mailed to BPMP Unitholders on or about , 2022.