Purchase of Own Securities

National Grid Transco PLC
12 March 2003



Announcement Dated: 12 March 2003


National Grid Transco - repurchase of shares

National Grid Transco plc announces that on 11 March 2003 it purchased for
cancellation 1,000,000 of its ordinary shares at a price of 378.6300 pence per
ordinary share.





Enquiries:



Investors

Marcy Reed          [phone]     [phone] (m)

Terry McCormick     [phone]     [phone] (m)

Louise Clamp        [phone]     [phone] (m)



Media

Gillian Home        [phone]

Jim Willison        [phone]

Clive Hawkins       [phone]


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