Holding(s) in Company

National Grid PLC
06 June 2006


National Grid plc ('NG.')

6 June 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 yesterday received a further notification from Barclays PLC;
that it had a notifiable interest in 3.86% of NG ordinary shares (104,940,379
shares) at 30 May 2006 (previously notified as 4.60% at 22 July 2005).


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