Holding(s) in Company

Scottish & Southern Energy PLC
21 February 2005


NOTIFICATION UNDER SECTION 198 TO 202 OF THE COMPANIES ACT 1985

The Company was notified on 18 February 2005 that Barclays plc, through various
legal entities as listed below, has a notifiable interest in 34,202,431 ordinary
50p shares in Scottish and Southern Energy plc, being 3.98% of the issued share
capital of the company.

Legal Entity

Barclays Global Investors Japan Ltd                                   205,026
Barclays Life Assurance Co Ltd                                        963,364
Barclays Bank Trust company Ltd                                        25,704
Barclays Global Fund Advisors                                       1,774,214
Barclays Private Bank and Trust Ltd                                       450
Barclays Global Investors Australia Ltd                               262,265
Barclays Private Bank Ltd                                               2,040
Barclays Global Investors Japan Trust & Banking                       857,999
Gerrard Ltd                                                         1,093,338
Barclays Private Bank and Trust Ltd                                    17,938
Barclays Global Investors Ltd                                      19,454,411
Barclays Global Investors, N.A.                                     9,543,913
Barclays Capital Securities Ltd                                         1,769

Group Holding                                                      34,202,431



Registered Holder

Bank of Ireland                                                       119,989
BARCLAYS CAPITAL NOMINEES LIMITED                                       1,769
Barclays Trust Co & Others                                              1,430
BARCLAYS TRUST CO AS EXEC/ADM                                           2,338
Barclays Trust Co DMC69                                                13,400
Barclays Trust Co R69                                                   8,536
BNP PARIBAS                                                            28,209
CHASE NOMINEES LTD                                                    483,183
CHASE NOMINEES LTD                                                  8,917,393
CHASE NOMINEES LTD                                                    273,106
CIBC MELLON GLOBAL SECURITIES                                          25,670
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                                             1,218
INVESTORS BANK AND TRUST CO.                                          207,468
INVESTORS BANK AND TRUST CO                                         1,377,000
INVESTORS BANK AND TRUST CO                                            11,218
INVESTORS BANK AND TRUST CO                                            24,352
INVESTORS BANK AND TRUST CO                                           154,176
INVESTORS BANK AND TRUST CO                                           205,305
INVESTORS BANK AND TRUST CO                                           419,035
INVESTORS BANK AND TRUST CO                                         1,238,260
INVESTORS BANK AND TRUST CO                                         1,198,947
INVESTORS BANK AND TRUST CO                                            11,997
INVESTORS BANK AND TRUST CO                                           240,659
INVESTORS BANK AND TRUST CO                                           204,421
INVESTORS BANK AND TRUST CO                                         4,438,534
INVESTORS BANK AND TRUST CO                                           170,272
INVESTORS BANK AND TRUST CO                                             9,602
JP MORGAN (BGI CUSTODY)                                               286,076
JP MORGAN (BGI CUSTODY)                                                55,586
JP MORGAN (BGI CUSTODY)                                               502,190
JP MORGAN (BGI CUSTODY)                                               104,488
JP MORGAN (BGI CUSTODY)                                                   920
JP MORGAN (BGI CUSTODY)                                             9,352,613
JP MORGAN (BGI CUSTODY)                                                14,104
JP MORGAN (BGI CUSTODY)                                               428,116
JP Morgan Chase Bank                                                      546
JPMORGAN CHASE BANK                                                    55,054
JP Morgan Chase Bank                                                    9,213
JP Morgan Chase Bank                                                    8,727
JP Morgan Chase Bank                                                   15,311
JP Morgan Chase Bank                                                   92,857
JP Morgan Chase Bank                                                  109,290
JP Morgan Chase Bank                                                  455,881
JP Morgan Chase Bank                                                  108,653
JP Morgan Chase Bank                                                    7,168
JP Morgan Chase Bank                                                   36,775
JP Morgan Chase Bank                                                   23,337
JP Morgan Chase Bank                                                   25,737
JPMORGAN CHASE BANK                                                   142,586
JPMORGAN CHASE BANK                                                   119,679
Mellon Trust - Boston & SF                                            128,085
Mellon Trust - Boston & SF                                             65,236
MELLON TRUST OF NEW ENGLAND                                            81,189
Mitsubishi Trust International                                          5,487
NORTHERN TRUST BANK - BGI SEPA                                        104,323
NORTHERN TRUST BANK - BGI SEPA                                         21,514
NORTHERN TRUST BANK - BGI SEPA                                         90,953
R C Greig Nominees Limited a/c                                        242,173
R C Greig Nominees Limited a/c                                        123,792
R C Greig Nominees Limited GP1                                        523,011
R C Greig Nominees Limited SA1                                        204,362
Reflex Nominees Limited                                                   450
State Street                                                           14,737
STATE STREET BOSTON                                                   746,809
STATE STREET BOSTON                                                    74,365
WELLS FARGO SEATTLE - WIRE BAN                                         14,791
ZEBAN NOMINEES LIMITED                                                  2,040

        TOTAL                                                      34,202,431




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