LTIS Operation

National Grid Transco PLC
08 March 2004

8 March 2004

National Grid Transco plc (NGT)

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Interests Notified by the Trustee for the Lattice Group Long Term Incentive
Scheme (the 'LTIS')

(Notification of Directors' Technical Interests, Pursuant to Section 324(2) of
the Companies Act 1985)

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On 5 March 2004 NGT received a notification from Mourant & Co. Trustees, as
Trustee of the Lattice Group Employees Share Trust operated in conjunction with
the LTIS. Following the exercise, and disposal or transfer, of 5,630 shares by
participants on 3 and 5 March 2004, the following Executive Director of NGT,
Steve Lucas, together with other employees formerly with Lattice Group, have a
technical interest in the remaining balance of 400,787 NGT shares held by the
Trustee.

(Note: For Companies Act purposes, Steve Lucas is deemed to have a technical
interest in all the shares held by the LTIS Trustee, together with all
participating employees. The interest ceases when shares are transferred to
participants by the exercise of LTIS options.)



Contact: D C Forward, Assistant Secretary (020 7004 3226)




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