Holding(s) in Company

National Grid Transco PLC
14 June 2004

Monday 14 June 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 last Friday received a further notification from The Capital Group
Companies, Inc., that its notifiable interest was 9.97% (308,024,616 shares) at
9 June 2004; having previously notified a 10.0% interest (310,343,026 shares) at
25 March 2004.


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