Director/PDMR Shareholding

National Grid PLC
02 August 2007

2 August 2007

National Grid plc (NG)

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Directors' Share Purchase



We have been notified that Maria Richter, Non-Executive Director of NG, today
acquired an interest in 1,500 NG ordinary shares, purchased by her husband at a
price of 707.5 pence per share.

This transaction increases her total interest to 3,255 NG ordinary shares.




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