Holding(s) in Company

Scottish & Southern Energy PLC
09 August 2005


NOTIFICATION UNDER SECTION 198 TO 202 OF THE COMPANIES ACT 1985

The Company was notified on 8 August 2005 that Barclays plc, through various
legal entities as listed below, has a notifiable interest in 38,180,391 ordinary
50p shares in Scottish and Southern Energy plc, being 4.45% of the issued share
capital of the company.

Legal Entity
Barclays Capital Securities Ltd                                410,122
Barclays Global Investors Australia Ltd                        374,985
Barclays Global Investors Ltd                               18,132,221
Barclays Life Assurance Co Ltd                               1,046,765
Barclays Private Bank Ltd                                          500
Barclays Global Investors Japan Trust and Banking            1,030,705
Barclays Private Bank and Trust Ltd                                450
Barclays Global Fund Advisors                                1,955,368
Gerrard Ltd                                                  4,997,094
Barclays Bank Trust Co Ltd                                      30,564
Barclays Private Bank and Trust Ltd                             17,938
Barclays Global Investors N.A.                              10,059,284
Barclays Global Investors Japan Ltd                            124,395
Group Holding                                               38,180,391

Registered Holder
Barclays Capital Nominees Ltd                                  410,122
Barclays Trust Co & Others                                       4,113
Barclays Trust Co AS EXEC/ADM                                      515
Barclays Trust Co DMC69                                         13,400
Barclays Trust Co R69                                           12,536
BNP Paribas                                                     60,517
Chase Nominees Ltd                                             470,456
Chase Nominees Ltd                                           7,735,913
Chase Nominees Ltd                                             270,886
CIBC Mellon Global Securities                                   35,921
Clydesdale Nominees HGB0125                                      2,920
Clydesdale Nominees HBG0125                                      1,270
Clydesdale Nominees HBG0125                                      4,230
Clydesdale Nominees HBG0125                                      6,660
Clydesdale Nominees HBG0125                                      1,640
Clydesdale Nominees HBG0225                                      1,218
Gerrard Nominees Ltd                                            26,040
Greig Middleton Nominees Ltd                                   440,935
Greig Middleton Nominees Ltd                                   210,000
Investors Bank and Trust Co                                     23,933
Investors Bank and Trust Co                                    300,352
Investors Bank and Trust Co                                    995,897
Investors Bank and Trust Co                                  1,789,414
Investors Bank and Trust Co                                    329,891
Investors Bank and Trust Co                                    194,805
Investors Bank and Trust Co                                     46,094
Investors Bank and Trust Co                                    639,570
Investors Bank and Trust Co                                      8,951
Investors Bank and Trust Co                                  4,329,091
Investors Bank and Trust Co                                  1,588,488
Investors Bank and Trust Co                                     24,813
Investors Bank and Trust Co                                     12,807
Investors Bank and Trust Co                                    161,040
Investors Bank and Trust Co                                    168,220
JP Morgan (BGI Custody)                                        258,215
JP Morgan (BGI Custody)                                         50,738
JP Morgan (BGI Custody)                                         76,442
JP Morgan (BGI Custody)                                        469,079
JP Morgan (BGI Custody)                                        102,975
JP Morgan (BGI Custody)                                         30,344
JP Morgan (BGI Custody)                                         44,256
JP Morgan (BGI Custody)                                      9,031,412
JP Morgan (BGI Custody)                                         14,716
JP Morgan (BGI Custody)                                        623,554
JPMorgan Chase Bank                                                716
JPMorgan Chase Bank                                             20,024
JPMorgan Chase Bank                                              1,333
JPMorgan Chase Bank                                             11,272
JPMorgan Chase Bank                                             55,352
JPMorgan Chase Bank                                              8,773
JPMorgan Chase Bank                                             26,400
JPMorgan Chase Bank                                             11,686
JPMorgan Chase Bank                                            160,734
JPMorgan Chase Bank                                            120,265
JPMorgan Chase Bank                                            114,373
JPMorgan Chase Bank                                            454,545
JPMorgan Chase Bank                                              8,213
JPMorgan Chase Bank                                             36,440
JPMorgan Chase Bank                                             91,509
JPMorgan Chase Bank                                              2,172
JPMorgan Chase Bank                                             23,600
JPMorgan Chase Bank                                              7,168
JPMorgan Chase Bank                                            147,524
JPMorgan Chase Bank                                            227,461
Master Trust Bank                                                4,395
Mellon Trust - Boston & SF                                      88,873
Mellon Trust - Boston & SF                                     116,827
Mellon Trust of New England                                    113,655
Mitsubishi Trust International                                   5,969
Mitsubishi Trust International                                   1,164
Northern Trust Bank - BGI SEPA                                 123,038
Northern Trust Bank - BGI SEPA                                  29,843
Northern Trust Bank - BGI SEPA                                 134,201
R C Greig Nominees Ltd                                       2,788,424
R C Greig Nominees Ltd a/c                                     758,755
R C Greig Nominees Ltd a/c                                     157,125
R C Greig Nominees Ltd a/c                                      84,398
R C Greig Nominees Ltd GP1                                     379,301
R C Greig Nominees Ltd SA1                                     152,116
Reflex Nominees Ltd                                                450
State Street                                                    14,543
State Street Boston                                            557,899
State Street Boston                                             73,413
State Street Trust of Canada                                    40,699
Sumitomo TB                                                        854
Zeban Nominees Ltd                                                 500
                                           Total            38,180,391



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