FORM 6-K

                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549


                            Report of Foreign Issuer


                      Pursuant to Rule 13a-16 or 15d-16 of
                       the Securities Exchange Act of 1934


                                February 8, 2005


                            BRITISH ENERGY GROUP PLC
                               (Registrant's name)


                               3 Redwood Crescent
                                    Peel Park
                              East Kilbride G74 5PR
                                    Scotland
                    (Address of principal executive offices)

 
Indicate by check mark whether the registrant files or will file annual 
reports under cover Form 20-F or Form 40-F.

                          Form 20-F..X.. Form 40-F.....

Indicate by check mark whether the registrant by furnishing the information 
contained in this Form is also thereby furnishing the information to the 
Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934.

                               Yes ..... No ..X..

If "Yes" is marked, indicate below the file number assigned to the registrant 
in connection with Rule 12g3-2(b): 



                                 Exhibit Index

The following document (bearing the exhibit number listed below) is furnished
herewith and is made a part of this Report pursuant to the General Instructions
for Form 6-K:

Exhibit       Description

No. 1         RNS Announcement, re: Section 198 Notice dated 8 February, 2005




8 February 2005



British Energy Group plc

NOTIFICATIONS UNDER SECTIONS 198 TO 202 - UK COMPANIES ACT



British Energy Group plc has received notification from Fidelity Investments of
the following:


1. Company in which shares are held:      British Energy Group plc

2. Notifiable interest:    Ordinary Shares

(A)               FMR Corp.
                  82 Devonshire Street
                  Boston, MA 02109

Parent holding company of Fidelity Management & Research Company (FMRCO),
investment manager for US mutual funds, a US state chartered bank which acts as
a trustee or investment manager of various pension and trust accounts.  (See
Schedule A for listing of Registered Shareholders and their holdings).

(B)               Fidelity International Limited (FIL)
                  P.O. Box HM 670
                  Hamilton
                  HMCX, Bermuda

Parent holding company for various direct and indirect subsidiaries, including
Fidelity Investment Services Ltd. (FISL) and Fidelity Pension Management (FPM),
investment managers for various non-US investment companies and institutional
clients.  (See Schedule A for listing of Registered Shareholders and their
holdings.)

3. The notifiable interests also comprise the notifiable interest of:

                  Mr. Edward C. Johnson 3d
                  82 Devonshire Street
                  Boston, MA 02109

A principal shareholder of Fidelity International Limited.

4. The notifiable interests include interest held on behalf of authorised unit
trust schemes in the UK, notwithstanding the exemption from reporting pursuant
to Section 209 (1)(h) of the Companies Act 1985.

5. These notifications of disclosable interests constitute separate
notifications of interest in the shares and are combined solely for the purposes
of clarity and efficiency.  Nothing herein should be taken to indicate that
Fidelity International Limited and its direct and indirect subsidiaries or Mr
Edward C Johnson 3d act as a group or in concert in respect of the disclosed
interests, or that they are required to submit these notifications on a joint
basis.

6. The disclosable interests arise under section 208 (4) (b) of the Act, namely
where a person, not being the registered holder, is entitled to exercise a right
conferred by the holding of the shares or to control the exercise of such
rights, or under section 203 of the Act respectively.


Schedule A

Security: British Energy Group plc



                                SHARES      MANAGEMENT      NOMINEE/REGISTERED NAME
                                  HELD       COMPANY
                                                     
                               584,059         FII          JP MORGAN, BOURNEMOUTH Total
                             4,772,717         FIL          BROWN BROS HARRIMN LTD LUX Total
                            10,422,985         FISL         JP MORGAN, BOURNEMOUTH Total
                             2,128,800        FMRCO         BROWN BROTHERS HARRIMAN AND CO Total
                               151,500         FPM          BANK OF NEW YORK BRUSSELS Total
                                21,040         FPM          NORTHERN TRUST LONDON Total
                            18,081,101                      Grand Total Ordinary Shares




Current ownership percentage:    3.22%

Shares in Issue:           561,016,553






END

                                   SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the 
registrant has duly caused this report to be signed on its behalf by the 
undersigned, thereunto duly authorized.


Date: February 8, 2005                     BRITISH ENERGY GROUP PLC

                                           By:____John Searles____

                                           Name:  John Searles
                                           Title: Director - Investor Relations