LTIS Operation

National Grid Transco PLC
25 November 2003

25 November 2003

National Grid Transco plc (NGT)

------------------------------------------------------------------------------

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)

------------------------------------------------------------------------------

NGT today 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 of 149,015 shares by some 80 participants in the period
from 19 to 24 November 2003, the following Executive Directors of NGT, Steve
Lucas and John Wybrew, together with other employees formerly with Lattice
Group, have a technical interest in the remaining balance of 813,896 NGT shares
held by the Trustee.

(Note: For Companies Act purposes, these Executive Directors of NGT are 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)




                      This information is provided by RNS
            The company news service from the London Stock Exchange