Transaction in Own Shares

National Grid PLC 31 December 2007 National Grid plc - Transaction in Own Shares 31 December 2007 National Grid plc announces that on 28 December 2007 it purchased 132,461 of its ordinary shares at a price of 839.7013 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 2,549,413,086 and the number of ordinary shares in Treasury will be 32,500,430. End This information is provided by RNS The company news service from the London Stock Exchange
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