Admission to trading of Transferable Securities

SANTANDER UK PLC

(LEI: PTCQB104N23FMNK2RZ28)

STRUCTURED NOTE AND CERTIFICATE PROGRAMME

NOTIFICATION OF ADMISSION TO TRADING OF TRANSFERABLE SECURITIES

The following transferrable securities issued by Santander UK plc (the Issuer) have today 29 May 2026 been admitted to trading on the main market of the London Stock Exchange plc:

(1)  Issue of £436,617 Preference Share-linked Autocallable Notes due 2032 (the Series 1322 Notes) (XS3326355578); and

(2)  Issue of £549,725 Preference Share-linked Autocallable Notes due 2032 (the Series 1323 Notes) (XS3326358671), and together with the Series 1322 Notes, the Notes).

The Notes are issued under the Issuer's Structured Note and Certificate programme pursuant to a Base Prospectus dated 13 March 2026, as supplemented from time to time (the Base Prospectus), read together with the Final Terms of the Notes dated 30 March 2026 (the Final Terms).

Full information on the Issuer and the offer of the Notes is only available on the basis of the Base Prospectus, read together with the Final Terms.

The Base Prospectus and the Final Terms have been published on the website of the London Stock Exchange.

For further information, please contact:

The Structured Notes Desk: [email protected]

Please note that the information contained in the Base Prospectus and the Final Terms may be addressed to and/or targeted at persons who are residents of particular countries (specified in the Base Prospectus and/or the Final Terms) 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 Base Prospectus and/or the Final Terms is not addressed. Prior to relying on the information contained in the Base Prospectus, and/or the Final Terms, you must ascertain from the Base Prospectus and/or the Final Terms whether or not you are part of the intended addressees of the information contained therein.

Your right to access this service is conditional upon complying with the above requirement.

The Final Terms referenced herein does not constitute an offer of securities for sale in the United States. The securities described herein have not been, and will not be, registered under the U.S. Securities Act of 1933, as amended (the "Securities Act"), or under any relevant securities laws of any state of the United States of America, and may not be offered or sold to U.S. persons or to persons within the United States of America, except pursuant to an exemption from the Securities Act.

END