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


                                 August 18, 2004


                               BRITISH ENERGY 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 18 August 2004



18 August 2004

British Energy plc

Notification for the purposes of sections 198-203 Companies Act 1985 - British
Energy plc (the "Company").

The Company has today received notification from Polygon Investment Partners LLP
("Polygon") that they have a notifiable interest in the share capital of British
Energy plc.

The shares in which Polygon are interested are 35,000,000 ordinary shares of 44
28/43p each in the capital of the Company (the "Shares"), representing 5.64% of
the allotted, called up and fully paid share capital.  Polygon's interest in
these Shares arises by virtue of section 208 of the Act.  The Shares are
registered in the name of Vidacos Nominees UBS London - 2303, 25 Molesworth
Street, Lewisham, London, SE13 7EX.  The beneficial owner of the shares is
Polygon Global Opportunities Masterfund.



                                   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:  August 18, 2004                     BRITISH ENERGY PLC

                                           By:____Paul Heward____

                                           Name:  Paul Heward
                                           Title: Director - Investor Relations