Holding(s) in Company

National Grid PLC
19 October 2006


19 October 2006
National Grid plc ('NG')


Notification of Interest in National Grid Ordinary Shares;
Pursuant to Sections 198-202 of The Companies Act 1985.


National Grid today received notification from Fidelity International (FMR Corp.
and Fidelity International Limited and their direct and indirect subsidiaries),
that it had a notifiable interest of 3.04% (82,873,515 shares) as at 18 October
2006.


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