Dividend Reinvestment

National Grid PLC
29 January 2007

National Grid plc ('NG')

29 January 2007





Notification of Directors' Interests:

(Dividend Reinvestment Plan)



NG today received notification that, following the operation of the NG Dividend
Reinvestment Plan (DRIP), Sir John Parker became interested in an additional 60
ordinary shares purchased at 753.5p per share on 24 January 2007.






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