Director/PDMR Shareholding

National Grid PLC
30 January 2006


National Grid plc (NG)
Monday 30 January 2006

Notification of Directors' Interests
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The Trustee of the National Grid USA Incentive Thrift Plan (the 'Thrift Plan')
notified NG late on Friday that:

The interest of Mr M Jesanis in NG shares in the Thrift Plan was increased by
reinvestment of the January 2006 NG interim dividend received, as follows:

11.2602 Ordinary Share ADRs on 25 January 2006 at US$50.505 per ADR.



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