Transaction in Own Shares

National Grid PLC
14 February 2008

National Grid plc - Transaction in Own Shares



14 February 2008



National Grid plc announces that on 13 February 2008 it purchased 270,168 of its
ordinary shares at a price of 783.5931 pence per share from Morgan Stanley
Securities Limited. The purchased shares will be held as Treasury shares.



Following the purchase of these shares, the number of ordinary shares with
voting rights in issue (excluding Treasury shares) will be 2,530,662,610 and the
number of ordinary shares in Treasury will be 51,250,906.





End






                      This information is provided by RNS
            The company news service from the London Stock Exchange