14 May 2026

HSBC BANK PLC

PUBLICATION OF BASE PROSPECTUS SUPPLEMENT

The following base prospectus supplement (the "Base Prospectus Supplement") has been approved by the Financial Conduct Authority and is available for viewing:

Base prospectus supplement to: (i) the base prospectus dated 23 May 2025 relating to the issuance of Market Access Notes and Warrants under the Programme for the Issuance of Notes and Warrants and the supplements thereto dated 31 July 2025 and 26 February 2026 (together, the "Market Access Base Prospectus"); (ii) the base prospectus dated 13 June 2025 relating to the issuance of Preference Share-Linked Notes under the Programme for the Issuance of Notes and Warrants and the supplements thereto dated 31 July 2025 and 26 February 2026 (together, the "Preference Share-Linked Base Prospectus"); and (iii) the base prospectus dated 13 June 2025 relating to the issuance of Index-Linked Notes and Warrants under the Programme for the Issuance of Notes and Warrants and the supplements thereto dated 31 July 2025 and 26 February 2026 (together, the "Index-Linked Notes and Warrants Base Prospectus") (the Market Access Base Prospectus, the Preference Share-Linked Base Prospectus and the Index-Linked Notes and Warrants Base Prospectus together being hereafter referred to as the "Base Prospectuses" and, each, a "Base Prospectus").

To view the full document, please paste the following URL into the address bar of your browser:

https://www.hsbc.com/investors/fixed-income-investors/issuance-programmes

A copy of the above document has been submitted to the National Storage Mechanism and will shortly be available for inspection at: https://data.fca.org.uk/#/nsm/nationalstoragemechanism

DISCLAIMER - INTENDED ADDRESSEES

IMPORTANT: You must read the following before continuing: The following applies to the Base Prospectus Supplement available by clicking on the link above, and you are therefore advised to read this carefully before reading, accessing or making any other use of the Base Prospectus Supplement. In accessing the Base Prospectus Supplement, you agree to be bound by the following terms and conditions, including any modifications to them, any time you receive any information from us as a result of such access.

THE BASE PROSPECTUS SUPPLEMENT MAY NOT BE FORWARDED OR DISTRIBUTED OTHER THAN AS PROVIDED BELOW AND MAY NOT BE REPRODUCED IN ANY MANNER WHATSOEVER. THE BASE PROSPECTUS SUPPLEMENT MAY ONLY BE DISTRIBUTED OUTSIDE THE UNITED STATES TO PERSONS THAT ARE NOT U.S. PERSONS AS DEFINED IN, AND IN RELIANCE ON, REGULATION S UNDER THE U.S. SECURITIES ACT OF 1933, AS AMENDED (THE 'SECURITIES ACT') OR WITHIN THE UNITED STATES TO QIBs (AS DEFINED BELOW) IN ACCORDANCE WITH RULE 144A UNDER THE SECURITIES ACT ('RULE 144A'). ANY FORWARDING, DISTRIBUTION OR REPRODUCTION OF THE BASE PROSPECTUS SUPPLEMENT IN WHOLE OR IN PART IS PROHIBITED. FAILURE TO COMPLY WITH THIS NOTICE MAY RESULT IN A VIOLATION OF THE SECURITIES ACT OR THE APPLICABLE LAWS OF OTHER JURISDICTIONS.

NOTHING IN THIS ELECTRONIC PUBLICATION CONSTITUTES AN OFFER OF SECURITIES FOR SALE IN ANY JURISDICTION WHERE IT IS UNLAWFUL TO DO SO. ANY NOTES, WARRANTS OR CERTIFICATES ISSUED OR TO BE ISSUED PURSUANT TO ANY BASE PROSPECTUS AS SUPPLEMENTED BY THE BASE PROSPECTUS SUPPLEMENT HAVE NOT BEEN, AND WILL NOT BE, REGISTERED UNDER THE SECURITIES ACT OR THE SECURITIES LAWS OF ANY STATE OF THE UNITED STATES OR ANY OTHER JURISDICTION. ANY NOTES, WARRANTS OR CERTIFICATES ISSUED OR TO BE ISSUED PURSUANT TO ANY BASE PROSPECTUS AS SUPPLEMENTED BY THE BASE PROSPECTUS SUPPLEMENT MAY NOT BE OFFERED, SOLD, PLEDGED OR OTHERWISE TRANSFERRED EXCEPT (1) IN ACCORDANCE WITH RULE 144A UNDER THE SECURITIES ACT TO PERSONS REASONABLY BELIEVED TO BE QUALIFIED INSTITUTIONAL BUYERS (EACH A 'QIB') WITHIN THE MEANING OF RULE 144A (IN THE CASE OF NOTES, WARRANTS OR CERTIFICATES THE SUBJECT OF THE MARKET ACCESS BASE PROSPECTUS OR THE DIP BASE PROSPECTUS ONLY) OR (2) IN AN OFFSHORE TRANSACTION TO OR FOR THE BENEFIT OF A PERSON THAT IS NOT A U.S. PERSON IN ACCORDANCE WITH RULE 903 OR RULE 904 OF REGULATION S UNDER THE SECURITIES ACT.

Please note that the information contained in the Base Prospectus Supplement may be addressed to and/or targeted at persons who are residents of particular countries (specified in the relevant Base Prospectus and subject to the selling restrictions therein) only and is not intended for use and should not be relied upon by any person outside these countries and/or to whom the offer contained in the relevant Base Prospectus is not addressed. Prior to relying on the information contained in the relevant Base Prospectus and the Base Prospectus Supplement you must ascertain from the relevant Base Prospectus whether or not you are part of the intended addressees of the information contained therein.

Confirmation of your Representation: In order to be eligible to view the Base Prospectus Supplement or make an investment decision with respect to any Notes, Warrants or Certificates issued or to be issued pursuant to the relevant Base Prospectus as supplemented by the Base Prospectus Supplement, you must be (i) a person other than a U.S. person (as defined in Regulation S under the Securities Act); or (ii) (in the case of Notes, Warrants or Certificates the subject of the Market Access Base Prospectus or the DIP Base Prospectus only) a QIB that is acquiring the securities for its own account or for the account of another QIB. By accessing the Base Prospectus Supplement, you shall be deemed to have represented that you and any customers you represent are not a U.S. person or that you are a QIB (as the case may be), and that you consent to delivery of the Base Prospectus Supplement via electronic publication.

You are reminded that the Base Prospectus Supplement has been made available to you on the basis that you are a person into whose possession the Base Prospectus Supplement may be lawfully delivered in accordance with the laws of the jurisdiction in which you are located and you may not, nor are you authorised to, deliver the Base Prospectus Supplement to any other person.

The Base Prospectus Supplement does not constitute, and may not be used in connection with, an offer or solicitation in any place where offers or solicitations are not permitted by law. If a jurisdiction requires that the offering be made by a licensed broker or dealer and the underwriters or any affiliate of the underwriters is a licensed broker or dealer in that jurisdiction, the offering shall be deemed to be made by the underwriters or such affiliate on behalf of HSBC Bank plc in such jurisdiction. Under no circumstances shall the Base Prospectus Supplement constitute an offer to sell, or the solicitation of an offer to buy, nor shall there be any sale of any Notes, Warrants or Certificates issued or to be issued pursuant to any Base Prospectus as supplemented by the Base Prospectus Supplement, in any jurisdiction in which such offer, solicitation or sale would be unlawful.

The Base Prospectus Supplement has been made available to you in an electronic form. You are reminded that documents transmitted via this medium may be altered or changed during the process of electronic transmission and consequently none of HSBC Bank plc, its advisers, any person who controls HSBC Bank plc or any director, officer, employee or agent of HSBC Bank plc or affiliate of any such person accepts any liability or responsibility whatsoever in respect of any difference between the Base Prospectus Supplement made available to you in electronic format and the hard copy version available to you on request from HSBC Bank plc.