Total Voting Rights

1 April 2026

National Grid plc ('National Grid' or 'Company')

Voting Rights update

National Grid's registered capital as of 31 March 2026 consisted of 5,198,968,690 ordinary shares, of which, 225,541,858 were held as treasury shares; leaving a balance of 4,973,426,832 with voting rights.

The figure of 4,973,426,832 may be used by shareholders as the denominator for the calculations by which they will determine if they are required to notify their interest in, or a change to their interest in, National Grid under the FCA's Disclosure Guidance and Transparency Rules.

Julian Baddeley                              

Group Company Secretary