Holding(s) in Company

Scottish & Southern Energy PLC
06 September 2006



Scottish and Southern Energy plc


Holding(s) in Company


6 September 2006



NOTIFICATION UNDER SECTION 198 TO 202 OF THE COMPANIES ACT 1985


The Company was notified on 5 September 2006 that Barclays plc, through various
legal entities as listed below, has a notifiable interest in 30,407,126 ordinary
50p shares in Scottish and Southern Energy plc, being 3.53% of the issued share
capital of the company.

Legal Entity                                            Holding  Percentage Held

Barclays Capital Securities Ltd                     7,874,498           0.9153
Barclays Global Investors, N.A.                     6,085,863           0.7074
Barclays Bank Trust Company Ltd                        40,181           0.0047
Barclays Global Investors Australia Ltd                75,106           0.0087
Barclays Global Investors Japan Ltd                    89,888           0.0104
Barclays Private Bank and Trust Ltd                    12,160           0.0014
Barclays Global Investors Ltd                       7,908,808           0.9193
Barclays Global Investors Canada Ltd                   63,359           0.0074
Barclays Capital Inc                                  259,300           0.0301
Barclays Private Bank and Trust Ltd                       540           0.0001
Barclays Global Investors Japan Trust & Banking       973,857           0.1132
Barclays Global Fund Advisors                       2,760,389           0.3208
Gerrard Ltd                                         3,146,405           0.3657
Barclays Life Assurance Co Ltd                      1,116,772           0.1298

Group Holding                                      30,407,126           3.5343


Registered Holder                                      Account           Holding
                                                   Designation
BANK OF IRELAND                                       426353           183,161
BANK OF IRELAND                                       426360            20,045
BANK OF NEW YORK                                                        61,032
BARCLAYS CAPITAL NOMINEES LIMITED                                    7,285,420
BARCLAYS CAPITAL NOMINEES LIMITED                                      570,278
BARCLAYS CAPITAL NOMINEES LIMITED                                      240,500
Barclays Capital Securities Ltd.                                        18,800
Barclays Capital Securities Ltd.                                        18,800
Barclays Global Investors Canada                                        63,359
Barclays Trust Co & Others                                               1,946
BARCLAYS TRUST CO AS EXEC/ADM                                              750
Barclays Trust Co DMC69                                                 13,400
Barclays Trust Co E99                                                      700
Barclays Trust Co R69                                                   23,385
CHASE NOMINEES LTD                                     16376           417,756
CHASE NOMINEES LTD                                     21359            76,461
CHASE NOMINEES LTD                                     28270           281,182
Clydesdale Nominees HGB0125                         63919101             1,270
Clydesdale Nominees HGB0125                         68640801             4,230
Clydesdale Nominees HGB0125                         69451601             6,660
Gerrard Nominees Limited                              607486               750
Gerrard Nominees Limited                              617906               400
Gerrard Nominees Limited                              622124             1,500
Gerrard Nominees Limited                              635860             1,750
Gerrard Nominees Limited                              637739               450
Gerrard Nominees Limited                              643975             2,700
Gerrard Nominees Limited                              647291               875
Gerrard Nominees Limited                              658574             1,250
Gerrard Nominees Limited                              660968             1,500
Gerrard Nominees Limited                              777546               200
Greig Middleton Nominees Limited (GM1)                                 147,787
Greig Middleton Nominees Ltd (GM3)                220805DN              22,258
Greig Middleton Nominees Ltd (GM3)                523475DN              75,000
INVESTORS BANK AND TRUST CO.                                         2,192,520
INVESTORS BANK AND TRUST CO.                                            24,329
INVESTORS BANK AND TRUST CO.                                           263,024
INVESTORS BANK AND TRUST CO.                                            68,134
INVESTORS BANK AND TRUST CO.                                           212,382
INVESTORS BANK AND TRUST CO.                                            79,630
INVESTORS BANK AND TRUST CO.                                           147,298
INVESTORS BANK AND TRUST CO.                                            13,473
INVESTORS BANK AND TRUST CO.                                         4,122,928
INVESTORS BANK AND TRUST CO.                                           878,367
INVESTORS BANK AND TRUST CO.                                           137,538
INVESTORS BANK AND TRUST CO.                                           102,279
INVESTORS BANK AND TRUST CO.                                             6,787
JP MORGAN (BGI CUSTODY)                                16331           193,323
JP MORGAN (BGI CUSTODY)                                16338            51,273
JP MORGAN (BGI CUSTODY)                                16341           467,472
JP MORGAN (BGI CUSTODY)                                16342           108,806
JP MORGAN (BGI CUSTODY)                                16400         6,553,998
JP MORGAN (BGI CUSTODY)                                17011            14,716
JP MORGAN (BGI CUSTODY)                                18409           657,387
JPMORGAN CHASE BANK                                                     75,106
JPMorgan Chase Bank                                                      5,030
JPMorgan Chase Bank                                                      8,479
JPMorgan Chase Bank                                                     52,587
JPMorgan Chase Bank                                                     92,756
JPMorgan Chase Bank                                                    470,335
JPMorgan Chase Bank                                                     43,921
JPMorgan Chase Bank                                                     86,285
JPMorgan Chase Bank                                                      8,213
JPMorgan Chase Bank                                                      7,168
JPMorgan Chase Bank                                                    125,217
JPMorgan Chase Bank                                                    116,362
JPMorgan Chase Bank                                                     23,600
JPMORGAN CHASE BANK                                                     28,123
Mellon Trust - US CUSTODIAN /                                           34,536
Mitsui Asset                                                            14,582
R C Greig Nominees Limited                                           2,030,796
R C Greig Nominees Limited a/c AK1                                     498,498
R C Greig Nominees Limited a/c BL1                                      80,241
R C Greig Nominees Limited a/c CM1                                      46,553
R C Greig Nominees Limited GP1                                         155,857
R C Greig Nominees Limited SA1                                          78,040
Reflex Nominees Limited                                                    540
STATE STREET BANK AND TRUST CO                                          27,700
STATE STREET BOSTON                                                    446,172
Trust & Custody Services Bank                                              522
Trust & Custody Services Bank                                            8,688

                                      Total                         30,407,126


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