Director/PDMR Shareholding

National Grid PLC
19 June 2007


19th June 2007


Director's Interests in National Grid plc (NG.) Ordinary Shares
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National Grid Share Matching Plan

Today, the Trustee of the National Grid 1996 Group Employee Share Trust (ESOP)
confirmed that, on 18 June 2007, Steve Lucas exercised the matching award, over
16,909 NG. ordinary shares, granted to him under the National Grid Share
Matching Scheme operation in May 2004 (at nil cost to exercise). 9,962 of these
shares are retained by him, after disposing of 6,947 NG ordinary shares, at a
price of 742p yesterday, to meet statutory deductions.

Steve Lucas's total interest after this event is over 531,662 ordinary shares.


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