31 May 2024

National Grid plc

Publication of Notice of 2024 AGM & Responsible Business Report

National Grid plc ("National Grid" or the "Company") announces the following documents have been published today and are available on the Company's website at https://www.nationalgrid.com/investors/resources:

·    Notice of 2024 Annual General Meeting ("AGM")

·    Responsible Business Report 2023/24

·    Climate Transition Plan

The 2024 AGM will be held at 11.00am on Wednesday 10 July 2024 at The Slate, Warwick Conferences, The University of Warwick, Scarman Road, Coventry, CV4 7SH. The AGM will be held as a hybrid meeting and shareholders will be able to join via the electronic meeting platform or in person. For further information, please refer to the Notice of 2024 AGM and the Company's website at https://www.nationalgrid.com/investors/shareholder-information/agm

A copy of the Notice of the 2024 AGM and proxy form have been submitted to the Financial Conduct Authority via the National Storage Mechanism where they will shortly be available for inspection at https://data.fca.org.uk/#/nsm/nationalstoragemechanism

Pritti Patel

Deputy Company Secretary and General Counsel Corporate