Total Voting Rights

National Grid PLC
02 July 2007



2 July 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 registered capital as of 30 June 2007 consisted of
2,676,106,035 ordinary shares, of which 10,180,000 had been purchased in the
market and registered as Treasury Shares; leaving a balance of 2,665,926,035
shares with voting rights.


On 2 July 2007, National Grid transferred 61,012 shares held in Treasury to
employee share scheme participants. Following this change,

National Grid plc's registered capital as of 2 July 2007 consists of
2,676,106,035 ordinary shares, of which 10,118,988 have been purchased in the
market and registered as Treasury Shares; leaving a balance of 2,665,987,047
shares with voting rights.



The figure of 2,665,987,047 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 cancellation, or transfer to Treasury,
of the shares involved (and any earlier repurchases which remain to be
registered).


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