Sale of Manquehue net

National Grid Group PLC
27 September 2002

27 September 2002

National Grid - sale of Manquehue net

National Grid Group plc announces today that it has reached agreement to sell
its stake in its Chilean joint venture, Manquehue net.

As noted in the company's pre-close trading update issued earlier this week, we
have also agreed the sale of Silica to management and are in advanced
discussions to find a solution for Intelig before the end of our financial year.
We remain confident we will complete our exit from all these businesses within
the financial provisions made last year.

 Cautionary statement

This announcement contains certain statements that are neither reported
financial results nor other historical information. These statements are
forward-looking statements within the meaning of the safe-harbour provisions of
the federal securities laws of the United States. These forward-looking
statements rely on a number of assumptions and are subject to a number of risks
and uncertainties, many of which are outside the control of National Grid Group
plc ('National Grid'), that could cause actual results to differ materially from
those expressed in or implied by such statements, such as future market
conditions, currency fluctuations, the behaviour of other market participants
and the actions of governmental and state regulators. Other factors that could
cause actual results to differ from those described in this material include the
ability to integrate Lattice Group plc and National Grid successfully or to
realise all of the synergies from such integration or the failure to retain key
management. For a more detailed description of these assumptions, risks and
uncertainties, please see National Grid's filings with the United States
Securities and Exchange Commission (and, in particular, the 'Risk Factors' and
'Operating and Financial Review' sections in its most recent annual report on
Form 20F). Recipients are cautioned not to place undue reliance on these
forward-looking statements, which speak only as of the date of publication of
this announcement. National Grid does not undertake any obligation to publicly
release any revisions to these forward-looking statements to reflect events or
circumstances after the date of publication of this announcement.



Enquiries

National Grid Group:

Investors

Marcy Reed      [phone] [phone](m)

Terry McCormick      [phone] [phone](m)

Louise Clamp      [phone] [phone](m)

Media

Clive Hawkins      [phone] [phone](m)

Citigate Dewe Rogerson: [phone]

Anthony Carlisle [phone](m)


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