Holding(s) in Company

National Grid Transco PLC
05 December 2003

5 December 2003

National Grid Transco plc (NGT)

Notification of Interest in NGT Ordinary Shares,

Pursuant to Section 198 of The Companies Act 1985

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

NGT today received a further notification from The Capital Group Companies,
Inc., that its notifiable interest increased to 9.06% (279,106,201 shares) at 4
December 2003.


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