Holding(s) in Company

Scottish & Southern Energy PLC 17 November 2004 NOTIFICATION UNDER SECTION 198 TO 202 OF THE COMPANIES ACT 1985 The Company was notified on 16 November 2004 that Barclays plc, through various legal entities as listed below, has a notifiable interest in 34,578,541 ordinary 50p shares in Scottish and Southern Energy plc, being 4.03% of the issued share capital of the company. Legal Entity Barclays Global Investors Japan Ltd 244,435 Barclays Life Assurance Co Ltd 1,092,209 Barclays Bank Trust company Ltd 23,803 Barclays Global Fund Advisors 1,582,785 Barclays Private Bank and Trust Ltd 450 Barclays Global Investors Australia Ltd 321,617 Barclays Private Bank Ltd 69,610 Barclays Global Investors Japan Trust & Banking 853,424 Gerrard Ltd 1,368,101 Barclays Private Bank and Trust Ltd 18,938 Barclays Global Investors Ltd 19,107,907 Barclays Global Investors, N.A. 9,895,262 Group Holding 34,578,541 Registered Holder Bank of Ireland 154,814 Barclays Trust Co & Others 1,485 Barclays Trust Co DMC69 13,400 Barclays Trust Co R69 8,918 CHASE NOMINEES LTD 475,943 CHASE NOMINEES LTD 9,160,695 CHASE NOMINEES LTD 281,803 CIBC MELLON GLOBAL SECURITIES 11,919 Clydesdale Nominees HGB0125 2,920 Clydesdale Nominees HGB0125 1,270 Clydesdale Nominees HGB0125 4,230 Clydesdale Nominees HGB0125 6,660 Clydesdale Nominees HGB0125 1,640 Clydesdale Nominees HGB0125 1,000 Clydesdale Nominees HGB0125 1,218 INVESTORS BANK AND TRUST CO. 10,401 INVESTORS BANK AND TRUST CO 1,189,020 INVESTORS BANK AND TRUST CO 212,952 INVESTORS BANK AND TRUST CO 146,060 INVESTORS BANK AND TRUST CO 24,352 INVESTORS BANK AND TRUST CO 252,445 INVESTORS BANK AND TRUST CO 4,291,268 INVESTORS BANK AND TRUST CO 61,796 INVESTORS BANK AND TRUST CO 1,634,217 INVESTORS BANK AND TRUST CO 208,470 INVESTORS BANK AND TRUST CO 9,602 INVESTORS BANK AND TRUST CO 205,311 INVESTORS BANK AND TRUST CO 16,878 INVESTORS BANK AND TRUST CO 1,195,275 INVESTORS BANK AND TRUST CO 529,868 JP MORGAN (BGI CUSTODY) 288,562 JP MORGAN (BGI CUSTODY) 55,586 JP MORGAN (BGI CUSTODY) 463,948 JP MORGAN (BGI CUSTODY) 81,570 JP MORGAN (BGI CUSTODY) 104,488 JP MORGAN (BGI CUSTODY) 31,795 JP MORGAN (BGI CUSTODY) 52,156 JP MORGAN (BGI CUSTODY) 8,738,597 JP MORGAN (BGI CUSTODY) 14,104 JP MORGAN (BGI CUSTODY) 450,869 JPMORGAN CHASE BANK 55,054 JP Morgan Chase Bank 6,023 JP Morgan Chase Bank 9,213 JP Morgan Chase Bank 92,280 JP Morgan Chase Bank 15,311 JP Morgan Chase Bank 36,775 JP Morgan Chase Bank 433,504 JP Morgan Chase Bank 7,168 JP Morgan Chase Bank 105,287 JP Morgan Chase Bank 106,010 JP Morgan Chase Bank 8,727 JP Morgan Chase Bank 23,337 JP Morgan Chase Bank 25,025 JPMORGAN CHASE BANK 26,035 JPMORGAN CHASE BANK 135,685 JPMORGAN CHASE BANK 185,932 Mellon Trust - Boston & SF 88,556 Mellon Trust - Boston & SF 133,161 MELLON TRUST OF NEW ENGLAND 111,689 Mitsubishi Trust International 5,010 NORTHERN TRUST BANK - BGI SEPA 144,962 NORTHERN TRUST BANK - BGI SEPA 26,188 NORTHERN TRUST BANK - BGI SEPA 99,269 R C Greig Nominees Limited a/c 304,605 R C Greig Nominees Limited a/c 150,977 R C Greig Nominees Limited GP1 665,971 R C Greig Nominees Limited SA1 246,548 Reflex Nominees Limited 450 State Street 14,321 STATE STREET BOSTON 757,711 STATE STREET BOSTON 74,164 WELLS FARGO SEATTLE - WIRE BAN 16,478 ZEBAN NOMINEES LIMITED 69,610 TOTAL 34,578,541 This information is provided by RNS The company news service from the London Stock Exchange

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