EXHIBIT 10.16

Date: 28th October 2002

PRIVATE & CONFIDENTIAL

Mr S Lewis
28 Mickleton Road
Earlsdon
Coventry
CV5 6PQ

Dear Steve,

Further to our recent discussions, I take pleasure in offering you a Temporary
International Assignment in the USA on accompanied status.

In addition, National Grid (USA) will provide employment for your accompanying
partner/spouse, Karen Manukonga, currently an employee of National Grid UK. With
minor exception, Karen's expatriate contract will mirror that of an accompanying
partner/spouse for as long as you remain on expatriate assignment and she
remains your partner/spouse.

If you accept this offer, with effect from 1st November 2002 you will take up
the position of VP and Head of Northeast Transmission Business for the National
Grid (USA) Inc in Westborough, USA. You will report to the Executive Vice
President and Chief Operating Officer National Grid (USA), currently Mike
Jesanis.

Your UK base salary will remain as (pound)80,000 gross pa. This gives a Net
Assignment Salary of (pound)71,687 per annum, other eligible benefits are as
indicated in the attached Temporary International Assignment Contract.

The Statement sets out your terms and conditions of employment. During your
assignment, your existing UK contract with the Company will be varied in
accordance with the Statement and the following documents:

      -     NGG International Assignment Policy document;

      -     Financial summary;

      -     Tax Equalisation Policy

      -     Code of Conduct.

For the duration of the assignment you and your accompanying partner/spouse will
be entitled to home leave return trips to the UK as set out in the NG policy
document. However, I am pleased to inform you that in recognition of your
forthcoming wedding you and your accompanying partner/spouse will be entitled to
an additional home leave return trip to the UK in 2003.

This offer is subject to the following conditions:

(i)   You and your partner holding valid passports

(ii)  The Company obtaining any necessary work and residency permit or other



      appropriate visa from the host country for you and your accompanying
      partner

(iii) You and your accompanying partner consulting the Company's own medical
      adviser and a) being passed as fit for this assignment and b) receiving
      all inoculations/immunisations recommended by him [in accordance with good
      medical practice] for the area you are visiting. Any costs incurred in
      meeting any necessary medical requirements may be recovered from the
      Company.

If you have any questions regarding the temporary International Assignment
please let me know as soon as possible and I will do all I can to ensure they
are answered.

If you would like to accept this offer I should be grateful if you would sign
and return a copy of this letter as confirmation that you agree with the terms
of this offer by no later than 31st October 2002.

Yours sincerely

Maggie Hurt
Director of Human Resources

I accept the employment terms set out in this letter and the enclosed temporary
international assignment contract. I have also enclosed, duly signed by myself,
a copy of the contract signature acceptance sheet.

Signed: /s/ S. Lewis
Print Name Stephen P. Lewis
Dated: 29th October 2002



                   TEMPORARY INTERNATIONAL ASSIGNMENT CONTRACT

THE NATIONAL GRID GROUP plc (the "Company") and THE NATIONAL GRID COMPANY plc
whose registered offices are at 15 Marylebone Road, London NW1 5JD and National
Grid House, Kirby Comer Road, Coventry, CV4 8JY respectively and

TO THE.EMPLOYEE: Stephen Lewis of 28 Mickleton Road, Earlsdon, Coventry, CV5
6PQ.

ON 21st October 2003

1.    Appointment and Term

1.1   You will be appointed to undertake a temporary overseas assignment VP and
      Head of Northeast Transmission Business for the National Grid (USA) Inc
      based in Westborough, USA. During the assignment you will report to the
      Executive Vice President and Chief Operating Office National Grid (USA),
      currently Mike Jesanis, who will discuss the precise nature of your duties
      and responsibilities with you. For all practical assignment issues covered
      in this contract you should refer to International Personnel Management
      Ltd (IPM), whom National Grid have appointed to undertake all expatriate
      administration. IPM can be contacted on +44 1733 352235.

1.2   This assignment and the provisions in this contract are effective from 1st
      November 2002. The assignment is expected to last for a period of 3 years,
      however, the Company may vary the duration of the contract if required.
      Any substantial alteration or variation to the length of the assignment
      will be by agreement and fully discussed with you before the changes are
      made.

1.3   This is an accompanied assignment. Your assignment terms and conditions as
      set out in this document have been prepared on that basis.

1.4   Throughout the period of your assignment the terms and conditions of your
      existing UK employment contract with the Company shall be varied in
      accordance with the terms and conditions placed on you while overseas as
      set out or referred to in this contract. But otherwise the terms and
      conditions of your existing UK employment contract shall continue to
      apply. At the expiration of this temporary international assignment
      contract, and subject to clause 10, you will return to the UK, and your
      existing UK employment contract will be modified to include any
      modifications made to the employment conditions of the Company's UK staff
      in the period of absence will become fully effective once again.

1.5   For the duration of your assignment John Carlton, Director of Network
      Strategy, will act in the role of mentor. This role will be to maintain
      regular professional contact with you during the assignment and to take
      managerial responsibility for your career management and repatriation.

2.    Hours of Work.

      The normal hours of work will be the same as those applying to local staff
      of the overseas company. However, you will be expected to work such other
      hours as may be



      required for the proper performance of your duties and you will not be
      entitled to receive additional remuneration for work over and above normal
      hours.

3.    Pay

3.1   Salary

      3.1.1 During the assignment you will receive a salary equivalent to your
            Base Salary (specified in your Assignment Offer letter enclosed with
            this contract) net of Hypothetical Tax in accordance with the NG's
            International Tax Policy referred to in clause 7.

      3.1.2 In addition to your Base Salary, you will receive International
            Allowances as appropriate, which are calculated by reference to your
            Base Salary, and benefits, as set out below. These allowances will
            be paid to you without deducting hypothetical tax.

      3.1.3 Your Base Salary will be used to calculate your pension
            contributions throughout the period of your assignment in accordance
            with the NG's normal UK salary review policy.

3.2   Bonus

      For the duration of the assignment you will be eligible for a bonus. The
      maximum bonus you may earn is that percentage of your Base Salary set out
      in the attached financial summary based on achieving the performance
      targets agreed with Mike Jesanis. The amount of your bonus earned whilst
      on an international assignment will be subject to a hypothetical tax
      deduction at the time it is paid, as detailed in the International Tax
      Policy.

4.    International Allowances

      4.1   International and Cost of Living Allowances

            You are entitled to receive an international and cost of living
            allowances in accordance with NG's policy on your overseas location.
            Details of the allowances applicable to your assignment location are
            set out in the attached financial summary document. These allowances
            are paid to the individual monthly in arrears for the period of the
            assignment spent overseas in rented accommodation. The Company will
            be responsible for any taxes payable on these allowances.

      4.2   Disturbance Allowance

            4.2.1 A disturbance allowance of (pound)8,000 will be paid to you at
                  the start of your assignment, as set out in the attached
                  Financial Summary document. This amount will be made as a lump
                  sum upon you signing the contract.



                  This is an accompanied level allowance to account for Karen
                  Manukonga, a National Grid employee, as your partner/spouse.

            4.2.2 This is intended to assist with the cost of settling into
                  overseas accommodation and in defraying the additional expense
                  incurred in moving away from the UK. The Company will be
                  responsible for any taxes payable on this allowance.

4.3   Terminal Bonus

      4.3.1 10% of your Base Salary per annum pro rata for the duration of the
            assignment will be paid to you as a one-off lump sum on completion
            of the assignment up to a maximum of three years. The Company will
            be responsible for any taxes payable on this bonus.

      4.3.2 No payment will be made if you terminate the assignment before the
            agreed term has been completed or if NG terminate the assignment in
            circumstances including gross misconduct by you or a serious or
            repeated breach by you of the Code of Conduct.

5.    Benefits

5.1   Accommodations/Utilities

      5.1.1 You will be responsible for determining arrangements for your UK
            home and all costs, taxes or other expenses related to your UK home
            are to your account.

      5.1.2 You may be required to spend a short period of time in hotel
            accommodation on arrival in the overseas location while furnished
            rented accommodation is secured. Details of NG's policy on temporary
            accommodation are set out in the NG policy document.

      5.1.3 NG will assist you in finding suitable fully furnished or
            unfurnished (as appropriate) accommodation in the overseas country.
            NG's policy on accommodation/rent allowance is set out in the NG
            policy document.

      5.1.4 The cost of reasonable utilities i.e. gas, water, electricity,
            telephone rental and business calls will be paid by NG in accordance
            with the NG policy document.

      5.1.5 You will remain responsible for obtaining appropriate Household
            Contents insurance as stated in the NG policy document.

5.2   Travel and Transport

      Air tickets to the destination at the start and end of the assignment will
      be provided for you and your partner/spouse. Details of NG's policy on
      flights, company cars and local transportation are set out in the NG
      policy document.



5.3   Freight Allowances and Storage in the UK

      The Company will provide for the transportation of your personal baggage
      from the UK to the overseas country and subsequent return to the UK at the
      end of your assignment. Storage of some personal effects in the UK may be
      supported. Details of this policy are set out in the NG policy document.

5.4   Pension

      For the period of the assignment you will remain a member of the National
      Grid section of the Electricity Supply Pension Scheme. The Company will
      continue to make contributions and the appropriate deductions for your
      contributions will be made based on your Base salary.

5.5   Insurance

      Private international medical and dental insurance, including emergency
      repatriation, will be provided for you and your accompanying
      partner/spouse from the respective times of departure from your UK home to
      your destination and subsequent return. Further details of this general
      insurance coverage are set out in NG's policy document.

6.    Payment Arrangements

6.1   You should indicate the monthly amount in (pound) sterling, which you wish
      to be paid into a local bank account in the USA. This amount will be paid
      in local currency, calculated by reference to the exchange rate determined
      by our bankers in the UK on the day it is transferred. All transfer costs
      will be borne by the Company. The balance of your monthly salary will be
      paid into your nominated UK bank account in UK Sterling. Any changes to
      the location for payment should be made in line with NG's policy document.

6.2   The international and cost of living allowances ("the combined
      allowances") will be reviewed annually, currently in July. In this review
      the Company will take account of data provided by ECA International in
      respect of exchange rate movements, inflation and changes in any other
      appropriate measures. As a result of this review, the Company reserves the
      right to make changes to the amount of the combined allowances as
      appropriate. These changes will be implemented with immediate effect. You
      accept that your combined allowances may fluctuate up or down in July of
      each year and you accept that this fluctuation, if any, is in accordance
      with NG's policy as set out in the NG policy document.

7.    Taxation

7.1   The Company's approach to taxation is set out in the attached
      "International Tax" Policy.

7.2   In that you are on accompanied status with a National Grid employee, the
      Company may allocate shared non-salary benefits in kind for tax efficiency
      purposes.

8.    National Insurance Contributions



8.1   NG will apply for the necessary certificate of coverage to exempt you from
      contributions to the Social Security Scheme.

8.2   In the unlikely event that any social security federal, state or local
      taxes equivalent to UK National Insurance Contributions become payable in
      the USA, the Company will reimburse you for those payments.

9.    Leave

9.1   Annual Leave: Your annual leave will remain unchanged from your total UK
      entitlement.

9.2   Public Holidays: During your assignment in the USA, UK fixed public
      holidays will be replaced by local public holidays. These days will be
      taken either as local holidays arise or as agreed with the Assignment
      Manager.

9.3   Home Leave: With effect from 1st November 2002 for the duration of the
      assignment you and your accompanying partner/spouse will be entitled to
      home leave return trips to the UK as set out in the NG policy document. In
      recognition of your forthcoming wedding you and your accompanying
      partner/spouse will be entitled to an additional home leave return trip to
      the UK in 2003.

10.   Termination

10.1  For the avoidance of doubt, the termination provisions in your existing UK
      contract will continue to apply notwithstanding your temporary assignment
      overseas.

10.2  Where possible, reasonable notice of any premature termination of
      assignment will always be given. However, the company reserves the right
      to terminate the Temporary Overseas Assignment at any time without
      indemnity, compensation or notice where NG deems it necessary or
      desirable. Non-exhaustive examples of reasons for termination are as
      follows:

      (a)   serious or repeated breach of the Code of Conduct;

      (b)   behaviour by you or accompanying partner/spouse in a manner which
            will bring you, the Company, or Overseas Company into disrepute;

      (c)   any change in the business need for the assignment or in the
            contractual/financial relationships supporting a particular project;

      (d)   if the company received advice that your continued employment in the
            USA would be likely to endanger your health or safety or that of
            accompanying partner/spouse.

10.3  Your return to the United Kingdom on premature termination or expiry of
      your assignment will be dealt with in accordance with Section 8.11 of the
      NG International Assignment Policy.

11.   Company Credit Card

      You will be issued with a company credit card to facilitate business
      expenditure abroad in accordance with NG's policy as set out in the NG
      policy document.



12.   Financial

      You will be responsible for all financial obligations incurred by you
      during the term of your assignment, except where this expressly provides
      that the Company shall be liable for such expenses.

13.   Repatriation

      Prior to the end of your assignment, discussions will take place with NG
      Representatives to explore your skills, experience and aspirations as well
      as potential opportunities within National Grid Group to try to find you a
      suitable position within the Group, either in the UK, or elsewhere, as
      appropriate. Details of your repatriation are set out in the NG policy
      document.

14.   Jurisdiction

      Your assignment shall be governed by and all assignment documents shall be
      interpreted in accordance with the laws of England and Wales. All
      disputes, claims or proceedings between the parties relating to the
      validity, construction or performance of this Agreement are subject to the
      non-exclusive jurisdiction of the High Court of Justice in England and
      Wales.

Signed for and on behalf of The National Grid Company plc

Signed /s/ Maggie Hurt
Maggie Hurt
Director of Human Resources

Date 23.10.02

I have read the foregoing terms and conditions of employment and wish to accept
the temporary overseas assignment with the National Grid Group plc on those
terms and conditions.

Signed /s/ S Lewis
Stephen Lewis
Date 28.10.2002



                                FINANCIAL SUMMARY

          YOUR ASSIGNMENT CONTRACT, EXCLUSIVE OF BENEFITS, IN THE FIRST
                   YEAR, IS WORTH APPROXIMATELY P 79,687



             RENUMERATION                              ANNUAL
             ------------                              ------
                                                 
Assignment Salary
Base Salary                                         P 80,000.00
Deductions
Hypothetical Tax/PAYE                               P 25,409.84
SUB TOTAL                                           P 54,590.16
Assignment Allowances
International allowance                             P  8,000.00
Cost of living adjustment                           P  9,096.90
TOTAL RENUMERATION                                  P 71,687.06

TOTAL RENUMERATION (MONTHLY)                        P  5,973.92

Other Assignment Benefits:
Disturbance Allowance (tax free)                    P  8,000.00
One off payment at start of assignment

Bonuses
Performance
Potential to achieve a maximum of 25%
annual bonus, a notional tax of 40% will
be deducted from your bonus earned
whilst on assignment

Terminal
10% p.a. payable upon completion of this assignment


These other benefits provide additional value and support to you and your
family:

Pre Assignment Visit
Cultural Briefing
Accommodation costs
Utility Costs
Removal costs
One return Business Class flight per annum to the UK for yourself and your
accompanying partner/spouse (or equivalent value in economy class tickets)
One additional flight to the UK for yourself and your accompanying
partner/spouse in 2003 for your wedding (this will be Economy Class)
Tax Assistance with tax returns for UK in the year of departure and return and
host country in each relevant year or part year
BUPA International Healthcare cover
Company Car/Transport Allowance
Assistance selling a privately owned car in the UK up to P 2,000 Two return
Economy flights per annum for each of your two dependent children to enable them
to visit you in the US