Holding(s) in Company

National Grid PLC
28 November 2006


National Grid plc ('NG.')
28 November 2006

Notification of Interest in NG. Ordinary Shares, Pursuant to Section 198 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 4.00% of NG.
ordinary shares (108,970,875 shares) at 24 November 2006 (having previously
notified a 3.98% interest at 27 July 2006).


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