Holding(s) in Company

National Grid PLC
28 July 2006



National Grid plc ('NG.')

28 July 2006

Notification of Interest in NG. Ordinary Shares, Pursuant to Sections 198 to 208
of The Companies Act 1985

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National Grid plc today received a further notification from Legal & General
Investment Management Limited, that its notifiable interest was in 3.98% of NG.
Ordinary shares (108,541,582 shares) at 27 July 2006.


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