Holding(s) in Company

National Grid PLC
13 June 2006



National Grid plc ('National Grid')
13 June 2006

Notification of Interest in NG. Ordinary Shares, Pursuant to Section 198 of The
Companies Act 1985

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

National Grid yesterday received a further notification from Morgan Stanley
Securities Limited; that from 7 June 2006 it no longer had a notifiable interest
in NG. Ordinary shares.


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