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 03 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 03 February 2005 British Energy Group plc UK COMPANIES ACT 1985 - SECTIONS 198-203 - British Energy Group plc (the " Company") The Company has received notice as follows: 1. At close of business on 31 January 2005, Morgan Stanley Securities Limited ("MSSL") disposed of an interest in the shares that resulted in their holding a total of 19,087,447 shares, being approximately 3.40% of the issued share capital of the Company. 2. Morgan Stanley Securities Limited have transferred 3,547,707 shares to a third party on terms which give them the right to require the return of an equivalent number of shares. Accordingly, their interest in 3,547,707 shares is pursuant to Section 208 (5) of the Act. 3. MSSL is a member of the Morgan Stanley group of companies. Those group companies which are direct or indirect holding companies of MSSL are, under the terms of section 203 of the Companies Act 1985, each interested by attribution in any shares in which MSSL is interested. 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 03 2005 BRITISH ENERGY GROUP PLC By:____John Searles____ Name: John Searles Title: Director - Investor Relations 3 February 2005