Total Voting Rights

National Grid PLC
04 February 2008

4 February 2008

National Grid plc (National Grid)

Voting Rights and Capital update

National Grid has been notified that 9,731 shares held in Treasury were
transferred today to share scheme participants. Following this change, National
Grid plc's registered capital consists of 2,581,913,516 ordinary shares, of
which 46,142,003 have been purchased in the market and registered as Treasury
Shares; leaving a balance of 2,535,771,513 shares with voting rights.

The figure of 2,535,771,513 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.

Note: This notification confirms actual capital as recorded on the register at
the above date, allowing for changes recorded since the last notification.
National Grid is currently undertaking a share repurchase programme.  Where
repurchases are made, separate covering announcements will, as required,
identify numbers being repurchased and the supporting details indicate resultant
share capital after market settlement and transfer to Treasury, or cancellation,
of the shares involved (and any earlier repurchases which remain to be
registered).


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