Holding(s) in Company

National Grid PLC
20 October 2006

20 October 2006
National Grid plc ('NG')


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


NG today received notification from The Capital Group Companies, Inc. that its
notifiable interest in NG's ordinary shares had reduced to 5.06% (137,852,598
ordinary shares) at 18 October 2006.



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