Holding(s) in Company

National Grid PLC
09 December 2005


National Grid plc ('NG')
9 December 2005

Notification of Interest in NG Ordinary Shares, Pursuant to Sections 198 to 208
of The Companies Act 1985
------------------------------------------------------------------------------

NG yesterday received a notification from Credit Suisse First Boston group, that
its total interest was 3.41% (92,446,121 ordinary shares) at 6 December 2005.
(Included in this disclosure are 47,967,218 ordinary shares with an interest
under Section 208(5) of the Companies Act, by virtue of the right to re-delivery
of equivalent securities under stock lending arrangements.)



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