Transaction in Own Shares

National Grid PLC
18 January 2008

National Grid plc - Transaction in Own Shares



18 January 2008



National Grid plc announces that on 17 January 2008 it purchased 426,048 of its
ordinary shares at a price of 812.2464 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 2,539,593,263 and the
number of ordinary shares in Treasury will be 42,320,253.





End






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