16 January 2023

National Grid 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 plc issues of (i) EUR 750,000,000 3.875 per cent. Instruments due 16 January 2029 and (ii) EUR 1,000,000,000 4.275 per cent. Instruments due 16 January 2035 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/7417M_1-2023-1-13.pdf

http://www.rns-pdf.londonstockexchange.com/rns/7417M_2-2023-1-13.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, constituted of the Prospectus dated 11 August 2022 and the Supplementary Prospectus dated 4 January 2023) 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 each 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.