Total Voting Rights

National Grid PLC
30 April 2007



30 April 2007

National Grid plc (NG.) - Voting Rights and Capital- Update

In conformity with the Transparency Directive's transitional provision 6 we
would like to notify the market of the following:

National Grid plc's capital as of 30 April 2007 consists of

2,704,427,037 ordinary shares with voting rights.

The figure of 2,704,427,037 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 plc under the
FSA's Disclosure and Transparency Rules.



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