Holding(s) in Company

National Grid Transco PLC
29 March 2004

29 March 2004

National Grid Transco plc (NGT)

Notification of Interest in NGT Ordinary Shares,

Pursuant to Section 198 of The Companies Act 1985

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NGT today received a further notification from The Capital Group Companies,
Inc., that its notifiable interest increased to 10.0% (310,343,026 shares) at
25 March 2004.



Contact: D C Forward, Assistant Secretary (020 7004 3226).


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