File No. 70-_____

                United States Securities and Exchange Commission
                             Washington, D.C. 20549
                    ----------------------------------------
                                    Form U-1
                                   Declaration
                                    Under the
                   Public Utility Holding Company Act of 1935
                    ----------------------------------------

                             National Grid Group plc
                               15 Marylebone Road
                                  London NWI5JD
                                 United Kingdom

                     (Name of company filing this statement
                   and address of principal executive offices)
                    ----------------------------------------

                             National Grid Group plc
                    (Name of top registered holding company)
                    ----------------------------------------

                                Kirk L. Ramsauer
                             Deputy General Counsel
                                National Grid USA
                                25 Research Drive
                        Westborough, Massachusetts 01582
                            Telephone: (508) 389-2972
                            Facsimile: (508) 389-3518

                     (Name and address of agent for service)

The Commission is also requested to send copies of any communication in
connection with this matter to:

                               Markian M.W. Melnyk
                                 Thomas B. Reems
                     LeBoeuf, Lamb, Greene & MacRae, L.L.P.
                           1875 Connecticut Ave., N.W.
                              Washington, DC 20009
                            Telephone: (202) 986-8000
                            Facsimile: (202) 986-8102


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     National Grid Group plc ("National Grid") hereby submits this declaration
and requests that the Securities and Exchange Commission ("Commission") permit
it to become effective pursuant to the Public Utility Holding Company Act of
1935, as amended, ("1935 Act" or "Act") and the rules thereunder.

Item 1.  Description of the Proposed Transaction

A.  The Parties to the Transaction

1.  National Grid Group plc

     National Grid Group plc is a registered holding company under the 1935 Act.
In the United States, through its indirect subsidiary National Grid USA,
National Grid holds the voting securities of public utilities engaged in
electric distribution to residential, commercial, and industrial customers in
New England and electric and gas distribution in New York. National Grid USA
also directly and indirectly holds the voting securities of non-utility
companies engaged in businesses such as the construction and leasing of fiber
optic telecommunications systems and the provision of consulting services to
nonaffiliated utilities in the area of electric utility restructuring and
customer choice. National Grid's indirect subsidiary, National Grid Holdings
Limited, is a foreign utility company.

     National Grid's ordinary shares are listed on the London Stock Exchange and
its American Depositary Receipts ("ADRs") are listed on the New York Stock
Exchange./1 As of April 19, 2002 there were 1,776,636,707 ordinary shares and
one special share outstanding./2

2.  Lattice Group plc

     Lattice Group plc ("Lattice") is incorporated in England and Wales and is
one of the three successor companies to what was formerly British Gas plc./3

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

/1 National Grid has a small number of American Depositary Shares ("ADSs") in
the U.S. which trade as ADRs and are principally held by U.S. institutions.
ADSs, in the aggregate, account for less than 1% of National Grid's publicly
issued shares.

/2 The special share is a non-voting share owned by the U.K. government. The
special share, also referred to as the golden share, is a means for the
government to assure the continued independence of National Grid as a provider
of transmission services.

/3 In February 1997, the shareholders of British Gas plc approved the spin off
of Centrica plc, a supplier of gas and electricity to residential, industrial
and commercial customers throughout Great Britain. British Gas plc was renamed
BG plc. In December 1999 BG plc completed a financial restructuring which
resulted in the creation of a new parent company, BG Group plc. On October 23,
2000 BG Group plc completed the spin off of Lattice Group plc creating two
separate companies. BG Group plc continues to be engaged in gas and oil
exploration and production, the development and operation of infrastructure for
the manufacture, export, shipping and import of liquefied natural gas, gas
transmission and distribution, and power generation.


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Lattice's ordinary shares are listed on the London Stock Exchange. As of April
19, 2002 there were 3,528,149,704 ordinary shares and one special share
outstanding.

     For administrative and regulatory purposes Lattice is subdivided into two
subsidiary holding groups: Transco Holdings plc and Lattice Group Holdings Ltd.
Transco plc ("Transco"), Transco Holdings plc's principal subsidiary, is the
owner, operator and developer of the majority of Great Britain's gas
transportation and distribution system. The gas transportation and distribution
business in the U.K. is highly regulated and subject to price regulation by the
U.K. Office of Gas and Electricity Markets. Transco is ring-fenced for
regulatory purposes from the remainder of the Lattice group. The ring-fence is
designed to ensure the financial, organizational and managerial independence of
Transco, as a regulatory entity. Lattice Group Holdings Ltd. has two main
business areas: Telecoms and Lattice Enterprises. Lattice will certify as a
foreign utility company prior to consummation of the merger.

B.  The Proposed Transaction

     On April 22, 2002, National Grid and Lattice agreed to the terms of a
merger of equals. This declaration seeks approvals relating to the solicitation
of proxies from National Grid shareholders in connection with the merger.
National Grid will submit a separate application/declaration seeking authority
to finance the proposed merger.

     The terms of the merger are based on the recent relative equity market
capitalization values of the two companies. The merger is intended to be
implemented by way of a Scheme of Arrangement ("Scheme"), pursuant to Section
425 of the Companies Act (U.K.). Under the Scheme, National Grid will,
conditional on the merger becoming effective, change its name to National Grid
Transco plc ("Grid Transco") and issue new Grid Transco shares to Lattice
shareholders on the basis of 0.375 new Grid Transco shares for each Lattice
share held at the relevant record date./4 Upon completion of the merger,
National Grid shareholders will hold approximately 57.3 per cent and Lattice
shareholders will hold approximately 42.7 per cent of the issued share capital
of Grid Transco. The holdings and rights of holders of existing National Grid
shares and of National Grid ADSs will not be affected by the merger. Grid
Transco will have a combined market capitalization of approximately $21.4
billion (based on the

----------------------------
/4 If a Lattice shareholder has a fractional entitlement to Grid Transco shares
with a value in excess of (pound)3.00, such entitlement will be aggregated and
sold for the benefit of the relevant Lattice shareholder. Otherwise, fractions
of a Grid Transco share will not be allotted but will be aggregated and sold for
the benefit of the merged group.


                                       3



London Stock Exchange closing market prices for the two companies as of April
19, 2002)./5

     Under the Scheme, Lattice's current issued share capital will be cancelled
and reissued to National Grid or another wholly owned subsidiary of National
Grid. National Grid will therefore become the listed holding company of the
merged group and retain its listings on the London and New York stock exchanges.

     To implement the Scheme, Lattice will make an application to the High Court
of Justice of England and Wales (the "High Court") for the High Court to summon
a shareholders' meeting. After the High Court grants Lattice's application and
orders the shareholders' meeting, Lattice's shareholders will vote on the Scheme
at two meetings which will be held on the same day at a single location. The
first meeting, (the "Court Meeting") is ordered by the High Court. For the
Scheme to be effective, the Scheme must receive at the Court Meeting the
affirmative vote of a simple majority in number of those Lattice shareholders
present and voting (either in person or by proxy) representing not less than 75%
of the value of Lattice shares held by such Lattice shareholders who vote at the
meeting. At the second meeting, an Extraordinary General Meeting of Lattice, the
shareholders must pass a special resolution approving the implementation of the
Scheme. To pass this resolution, not less than 75% of the votes cast by Lattice
shareholders must be in favor of the resolution.

     After Lattice's shareholders have approved the Scheme, there will be a
further later hearing before the High Court to sanction the Scheme. All Lattice
shareholders are eligible to attend this hearing and express their views on the
Scheme. The Scheme is effective once the High Court order sanctioning the Scheme
has been delivered by Lattice to the Registrar of Companies in England and
Wales, and such Court order has been registered by the Register of Companies.
The High Court will sanction the Scheme once it is satisfied that the conditions
to the Scheme have been satisfied. Once the Scheme becomes effective, its terms
will be binding on all Lattice shareholders whether or not they voted in favor
of the Scheme.

     The merger, as implemented through the Scheme, will require approval by an
ordinary resolution of National Grid shareholders to be proposed at the National
Grid Extraordinary General Meeting. Ordinary resolutions are passed if

----------------------------
/5 The calculation of the total market capitalization as of April 19, 2002, is
shown below:


-------------------- ------------------- ------------------- ------------------------------------------
  As of April 19,    Closing Price Per   Shares Outstanding            Market Capitalization
       2002            Share (pence)
-------------------- ------------------- ------------------- --------------------- --------------------
                                                                       
(pound)1=$1.44712                                                     (pound)                  $
-------------------- ------------------- ------------------- --------------------- --------------------
National Grid                    490.00       1,776,636,707         8,705,519,864       12,597,931,906
-------------------- ------------------- ------------------- --------------------- --------------------
Lattice                          172.75       3,528,149,704         6,094,878,613        8,820,020,739
-------------------- ------------------- ------------------- --------------------- --------------------
Total                                                              14,800,398,477       21,417,952,645
-------------------- ------------------- ------------------- --------------------- --------------------


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more than fifty percent of the votes cast are in favor. Special resolutions to
change the name of National Grid and to alter its articles of association/6 will
also be proposed at the Extraordinary General Meeting. Special resolutions are
passed if not less than 75% of the votes cast are in favor of the resolution.

     The merger is subject to a number of conditions, including regulatory
consents and approvals in the U.K. and the U.S., and the approval of the
shareholders of both National Grid and Lattice. The merger is subject to the
condition that the European Commission either decides not to initiate
proceedings under Article 6(1)(c) of the Council Regulation (EEC) 4064/89 (as
amended), which governs market concentration and competition in the European
Union, or, if such proceedings are initiated, finds that the concentration is
compatible with the common market without imposing any conditions or obligations
that are not satisfactory to both parties acting reasonably./7 The merger is
also subject to the condition that the Office of Fair Trading in the United
Kingdom indicate, on terms satisfactory to both National Grid and Lattice acting
reasonably, that it is not the intention of the U.K. Secretary of State for
Trade and Industry to refer the merger or any matter arising therefrom or
related thereto to the Competition Commission. In addition, the merger is
subject to the condition that the Director General of OFGEM and the U.K.
Secretary of State for Trade and Industry/8 each indicating that they will not
seek modifications to any licenses held by National Grid or Lattice or their
subsidiaries under the Electricity Act 1989 or the Gas Act 1986 and subsequent
legislation, including the Utilities Act 2000; that they will not seek
undertakings or assurances from members of the National Grid or Lattice groups
except, in each case, on terms acceptable to National Grid and Lattice acting
reasonably; and that in connection with the merger, they will give such consents
and/or directions (if any) and/or seek or agree to such modifications (if any)
as are, in the reasonable opinion of National Grid or Lattice, necessary in
connection with such licenses.

C.  Proxy Solicitations

     National Grid must distribute proxy materials to its shareholders in
advance of the meeting at which shareholders will adopt the resolutions related
to the merger and Scheme. National Grid will directly distribute three documents
to its shareholders: (1) a Circular, which is similar to a proxy statement under
U.S. securities law; (2) proxy cards; and (3) two letters to shareholders
addressing likely questions. In addition, National Grid will prepare a document
titled, "Listing Particulars," which is similar to a U.S. registration
statement. The

----------------------------
/6 To implement the merger, the articles of association of National Grid will
need to be amended to change the rights of the Secretary of State, principally
to reflect National Grid's ownership of Transco.

/7 National Grid does not anticipate that the European Commission will assert
jurisdiction.

/8 The U.K. Secretary of State for Trade and Industry is the special shareholder
of Lattice and National Grid.

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Listing Particulars will not be distributed automatically to shareholders, but
will be available free of charge through a number of channels as described in
the Circular. All of these documents are attached to this declaration as
exhibits.

D.  Rule 54

     Pursuant to Rule 54, in "determining whether to approve the issue or sale
of a security by a registered holding company for purposes other than the
acquisition of an exempt wholesale generator or a foreign utility company, or
other transactions by such registered holding company or its subsidiaries other
than with respect to exempt wholesale generators or foreign utility companies,
the Commission shall not consider the effect of the capitalization or earnings
of any subsidiary which is an exempt wholesale generator or a foreign utility
company upon the registered holding company system if Rules 53(a), (b) and (c)
are satisfied. National Grid currently meets all of the conditions of Rule
53(a), except for clauses (1) and (2)./9 Due to the level of National Grid's
aggregate investment in foreign utility companies ("FUCOs") and the lack of U.S.
GAAP books and records for its FUCO investments, National Grid cannot comply
with Rule 53(a) and consequently the Commission may consider the effect of the
capitalization or earnings of any subsidiary which is a foreign utility company
in connection with the authorization requested herein.

     National Grid's aggregate investment, as defined in Rule 53(a), in FUCOs as
of September 30, 2001 was $3,092 million./10 National Grid has not invested in
exempt wholesale generators. As of September 30, 2001, National Grid's
consolidated retained earnings calculated in accordance with U.S. GAAP was
$3,533 million. Consequently, National Grid's aggregate investment in FUCOs as a
percentage of its consolidated retained earnings was 88% as of September 30,
2001. In Holding Co. Act Release No. 27490 (Jan. 16, 2002) (the "January Order")
National Grid was authorized to issue and sell securities for the purpose of
financing investments in FUCOs in an amount up to $5.406 billion. In the
application/declaration related to the proposed acquisition, National Grid will
request authorization to increase its authorized FUCO investment amount.

     The lack of any adverse effect associated with National Grid's current
financing plan was fully demonstrated in National Grid's Application in File No.

----------------------------
/9 As the Commission noted in The National Grid Group plc, Holding Co. Act
Release No. 27154 (March 15, 2000), National Grid has preexisting foreign
operations and cannot at this time commit to maintain the books and records of
these interests in conformity with U.S. GAAP. National Grid will, however,
comply fully with the substantive provisions of Rule 53.

/10 Aggregate investment is defined in Rule 53 under the Act to include all
amounts invested, or committed to be invested, in EWGs and FUCOs, for which
there is recourse, directly or indirectly to National Grid. This limit is
applied on a net basis and to the extent National Grid's previous investments or
guarantees have been repaid or have expired, those investments are netted from
the total aggregate investment.


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70-9591 and confirmed by the Commission in the January Order. Since that order
was issued in the very recent past and National Grid is operating within its
limits, National Grid's FUCO investments are complying with Rule 53. National
Grid will discuss its request for increased FUCO financing authorization in
greater detail in the separate application/declaration related to the proposed
acquisition.

     The authority sought herein to solicit proxies from National Grid's
shareholders will have no direct effect upon National Grid's investment in
foreign utility companies. The solicitation of proxies also is not a financing
transaction. The Commission will have an opportunity to evaluate National Grid's
request for financing authority related to proposed merger in National Grid's
related application/declaration. Accordingly, the Commission should grant the
authority requested in this declaration.

Item 2.  Fees, Commissions and Expenses

     In the preparation and distribution of the Circular, Listing Particulars,
proxy cards and answers to expected shareholder questions, National Grid will
incur ordinary expenditures customary for this type of activity. National Grid
will provide an estimate of these fees in an amendment.

Item 3.  Applicable Statutory Provisions

     Section 12(e) of the 1935 Act provides that any solicitation of any proxy
regarding any security of a registered holding company shall be unlawful if made
in contravention of such rules as may be promulgated by the Commission. The
financial transactions related to the proposed acquisition are subject to the
Commission's jurisdiction under the 1935 Act. Accordingly, this declaration is
being filed pursuant to Rule 62, which provides, generally that no solicitation
shall be made regarding transactions subject to the Commission's jurisdiction
under the 1935 Act, except pursuant to a declaration with respect to such
solicitation which has become effective. Rule 54 is also applicable.

Item 4.  Regulatory Approval

     The UK securities regulator, the UK Listing Authority ("UKLA"), will review
the disclosure in the Circular and the Listing Particulars. No U.S. state
regulatory authority and no Federal regulatory authority, other than the
Commission, has jurisdiction over the proposed proxy solicitation.

Item 5.  Procedure

     The proxy solicitation materials are being simultaneously reviewed by the
("UKLA") and National Grid requests that the Commission complete its review on a
schedule that meshes with the UKLA's schedule. Specifically, National Grid
requests that the Commission issue and publish by June 7, 2002 a notice with
respect to the filing of this declaration permitting this declaration to become


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effective. National Grid will submit draft proxy materials to the Commission
around May 23.

     No recommended decision by a hearing officer or other responsible officer
of the Commission is necessary or required in this matter. The Division of
Investment Management of the Commission may assist in the preparation of the
Commission's decision in this matter. There should not be a thirty-day waiting
period between the issuance and the effective date of any order issued by the
Commission in this matter, and it is respectfully requested that any such order
be made effective immediately upon entry thereof.

Item 6.  Exhibits and Financial Statements

Exhibit B-1(a)  Draft Circular (to be filed separately in draft form under
                confidential treatment request pursuant to Rule 104(b)).

Exhibit B-1(b)  Final Circular (to be filed by amendment).

Exhibit B-2(a)  Draft Listing Particulars (to be filed separately in
                draft form under confidential treatment request pursuant to
                Rule 104(b)).

Exhibit B-2(b)  Final Listing Particulars (to be filed by amendment).

Exhibit B-3(a)  Draft proxy cards and answers to expected shareholder
                questions (to be filed separately in draft form under
                confidential treatment request pursuant to Rule 104(b)).

Exhibit B-3(b)  Final proxy cards and answers to expected shareholder questions
                (to be filed by amendment).

Exhibit F-1     Opinion of Counsel - National Grid Group plc (to be filed by
                amendment).

Exhibit F-2     Past Tense Opinion of Counsel (to be filed by amendment).

Exhibit I-1     Form of Notice (to be filed by amendment).

Item 7. Environmental Effects

     The proposed proxy solicitation does not involve major Federal action
having a significant effect on the human environment. No federal agency has
prepared or is preparing an environmental impact statement with respect to the
proposed proxy solicitation.


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                                    SIGNATURE

     Pursuant to the requirements of the Public Utility Holding Company Act of
1935, Applicant has duly caused this declaration to be signed on its behalf by
the undersigned thereunto duly authorized.


Date:  May 15, 2002                 By: /s/   Kirk L. Ramsauer
                                    Deputy General Counsel
                                    National Grid USA


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