Director/PDMR Shareholding

National Grid PLC
28 August 2007

National Grid plc (the Company)



28 August 2007



Directors' interests in shares



The Company today received notification that following the operation of the
National Grid plc Dividend Reinvestment Plan, Sir John Parker and Mark Fairbairn
became interested in an additional 106 and 393 ordinary shares respectively.
The shares were purchased at 715.82 pence per share on 22 August 2007.




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