11 August 2026

National Grid Electricity Transmission plc 

Publication of Final Terms

The following final terms have been approved by the Financial Conduct Authority and are available for viewing:

Final Terms in relation to the National Grid Electricity Transmission plc issue of CAD 1,250,000,000 4.716 per cent. Green Instruments due 12 August 2036 under the National Grid plc and National Grid Electricity Transmission plc Euro 20,000,000,000 Euro Medium Term Note Programme.

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

http://www.rns-pdf.londonstockexchange.com/rns/1796Q_1-2026-8-11.pdf

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

For further information, please contact:

DISCLAIMER - INTENDED ADDRESSEES

Please note that the information contained in the Final Terms may be addressed to and/or targeted at persons who are residents of particular countries (specified in the Base Prospectus for the National Grid plc and National Grid Electricity Transmission plc Euro 20,000,000,000 Euro Medium Term Note Programme dated 19 August 2025, as supplemented by the Supplementary Prospectus dated 23 January 2026 and the Supplementary Prospectus dated 4 August 2026) only and is not intended for use and should not be relied upon by any person outside these countries. Prior to relying on the information contained in the Final Terms you must ascertain from the Base Prospectus 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.