Holding(s) in Company

Scottish & Southern Energy PLC
22 April 2005


NOTIFICATION UNDER SECTION 198 TO 202 OF THE COMPANIES ACT 1985

The Company was notified on 21 April 2005 that Barclays plc, through various
legal entities as listed below, has a notifiable interest in 39,970,925 ordinary
50p shares in Scottish and Southern Energy plc, being 4.65% of the issued share
capital of the company.

Legal Entity
Barclays Private Bank                                     2,040
Barclays Global Investors Japan Ltd                     218,703
Barclays Life Assurance Co Ltd                          955,668
Barclays Bank Trust company Ltd                          31,537
Barclays Global Fund Advisors                         1,898,071
Barclays Private Bank and Trust Ltd                         450
Barclays Global Investors Australia Ltd                 229,548
Barclays Global Investors Japan Trust & Banking       1,051,943
Gerrard Ltd                                             959,683
Barclays Private Bank and Trust Ltd                      17,938
Barclays Global Investors Ltd                        18,415,473
Barclays Global Investors, N.A.                       9,164,939
Barclays Capital Securities Ltd                       7,024,932
Group Holding                                        39,970,925



Registered Holder
Bank of Ireland                                         121,130
BARCLAYS CAPITAL NOMINEES LIMITED                     7,024,932
Barclays Trust Co & Others                                1,629
BARCLAYS TRUST CO AS EXEC/ADM                             3,972
Barclays Trust Co DMC69                                  13,400
Barclays Trust Co R69                                    12,536
BNP PARIBAS                                              44,324
CHASE NOMINEES LTD                                      487,382
CHASE NOMINEES LTD                                    7,749,970
CHASE NOMINEES LTD                                      270,814
CIBC MELLON GLOBAL SECURITIES                            25,699
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.                            163,680
INVESTORS BANK AND TRUST CO                           1,515,000
INVESTORS BANK AND TRUST CO                              24,352
INVESTORS BANK AND TRUST CO                             183,060
INVESTORS BANK AND TRUST CO                              11,979
INVESTORS BANK AND TRUST CO                              11,997
INVESTORS BANK AND TRUST CO                             205,101
INVESTORS BANK AND TRUST CO                           1,235,579
INVESTORS BANK AND TRUST CO                               9,602
INVESTORS BANK AND TRUST CO                           1,166,627
INVESTORS BANK AND TRUST CO                             230,987
INVESTORS BANK AND TRUST CO                             428,396
INVESTORS BANK AND TRUST CO                             170,272
INVESTORS BANK AND TRUST CO                              11,808
INVESTORS BANK AND TRUST CO                           4,377,339
JP MORGAN (BGI CUSTODY)                                 281,331
JP MORGAN (BGI CUSTODY)                                  53,555
JP MORGAN (BGI CUSTODY)                                 502,190
JP MORGAN (BGI CUSTODY)                                 104,488
JP MORGAN (BGI CUSTODY)                               9,261,051
JP MORGAN (BGI CUSTODY)                                  14,104
JP MORGAN (BGI CUSTODY)                                 646,256
JP Morgan Chase Bank                                      9,214
JP Morgan Chase Bank                                      8,820
JP Morgan Chase Bank                                     57,808
JP Morgan Chase Bank                                      1,507
JP Morgan Chase Bank                                    184,123
JP Morgan Chase Bank                                    455,881
JP Morgan Chase Bank                                      8,727
JP Morgan Chase Bank                                     36,775
JP Morgan Chase Bank                                    118,215
JP Morgan Chase Bank                                      7,168
JP Morgan Chase Bank                                     23,337
JP Morgan Chase Bank                                      9,431
JP Morgan Chase Bank                                    115,429
JP Morgan Chase Bank                                     92,857
JPMORGAN CHASE BANK                                      26,306
JPMORGAN CHASE BANK                                     145,247
JPMORGAN CHASE BANK                                      84,301
Mellon Trust - Boston & SF                               66,521
Mellon Trust - Boston & SF                              118,275
MELLON TRUST OF NEW ENGLAND                              81,970
Mitsubishi Trust International                            5,487
NORTHERN TRUST BANK - BGI SEPA                           89,188
NORTHERN TRUST BANK - BGI SEPA                          105,406
NORTHERN TRUST BANK - BGI SEPA                           21,514
R C Greig Nominees Limited a/c                          194,979
R C Greig Nominees Limited a/c                           99,933
R C Greig Nominees Limited GP1                          478,786
R C Greig Nominees Limited SA1                          185,985
Reflex Nominees Limited                                     450
State Street                                             14,737
STATE STREET BOSTON                                     609,331
STATE STREET BOSTON                                      73,806
The Northern Trust Co                                    40,364
WELLS FARGO SEATTLE - WIRE BAN                           14,527
ZEBAN NOMINEES LIMITED                                    2,040

        TOTAL                                        39,970,925




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