Holding(s) in Company

National Grid PLC
30 June 2006

National Grid plc

30 June 2006



Notification of Interest in National Grid Ordinary Shares;

Pursuant to Section 198 of The Companies Act 1985.



National Grid yesterday received notification from Fidelity International (FMR
Corp. and Fidelity International Limited and their direct and indirect
subsidiaries), that its notifiable interest had increased to 3.03% (82,537,325
shares) at 27 June 2006.


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