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 April 05 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 05 April 2005 5 April 2005 British Energy Group plc UK COMPANIES ACT 1985 - SECTIONS 198-202 - British Energy Group plc (the " Company") In accordance with Section 198-202 of the UK Companies Act 1985, the Company has received notification from Deutsche Bank AG that on the basis that the relevant issued share capital of the Company is 561,016,553 ordinary shares, Deutsche Bank AG and its subsidiary companies have a notifiable interest in 22,254,415 ordinary shares of British Energy Group plc, amounting to 3.97%. Part of this holding may relate to hedging arrangements for customer transactions. 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: April 05 2005 BRITISH ENERGY GROUP PLC By:____John Searles____ Name: John Searles Title: Director - Investor Relations