Holding(s) in Company

Scottish & Southern Energy PLC
08 August 2006



       NOTIFICATION UNDER SECTION 198 TO 202 OF THE COMPANIES ACT 1985


Scottish and Southern Energy plc (the Company) was notified on 7 August 2006
that FMR Corp. and its direct and indirect subsidiaries, and Fidelity
International Limited and its direct and indirect subsidiaries, both being non-
beneficial holders, have a notifiable interest in 26,153,107 ordinary shares in
the Company, being 3.04% of the issued share capital of the Company.


The shares are registered as follows:

Nominee/Registered Name                       Management           Shares
                                              Company              Held

JP Morgan, Bournemouth                        FPM                  893,010
Northern Trust London                         FPM                  2,300,611
State Str Bk and Tr Lndn                      FPM                  1,208,968
Bank of New York Brussels                     FPM                  859,319
Mellon Bank                                   FPM                  675,300
JP Morgan, Bournemouth                        FPM                  636,500
HSBC Bank Plc                                 FPM                  364,979
Bankers Trust London                          FPM                  123,800
Chase Manhttn Bk Ag Frnkfrt                   FPM                  84,500
Societe Generale                              FPM                  60,300
Midland Securities Services                   FPM                  51,500
JPMorgan Chase Bank                           FPM                  45,700
Dexia Privatbank                              FPM                  9,600
Chase Manhattan London                        FPM                  8,800
State Str Bk and Tr Lndn                      FMTC                 3,548,907
Brown Bros Harrimn Ltd.                       FMTC                 2,289,100
Northern Trust Co                             FMTC                 1,317,484
JPMorgan Chase Bank                           FMTC                 858,300
Mellon Bank N.A.                              FMTC                 848,298
Bank of New York                              FMTC                 426,600
CIBC Mellon Trust                             FMTC                 275,247
Royal Trust - Toronto                         FMTC                 34,055
JPMorgan Chase Bank                           FMRCO                1,387,700
State Str Bk and Tr Co                        FMRCO                164,600
Northern Trust London                         FMRCO                116,400
Mellon Bank N.A.                              FMRCO                37,300
Mellon Bank N.A.                              FMR                  29,600
JP Morgan, Bournemouth                        FISL                 2,121,157
Bermuda Trust Far East HK                     FIM HK               36,600
JP Morgan, Bournemouth                        FIL                  1,885,139
Chase Manhttn Bk Ag Frnkfrt                   FIL                  420,000
State Str Bk and Tr Co                        FIL                  276,130
Bank of New York Brussels                     FIL                  268,800
Northern Trust London                         FIL                  199,990
JP Morgan, Bournemouth                        FIL                  164,100
State Street Bank Australia                   FIL                  157,000
National Astl Bk Melbourne                    FIL                  102,000
Northern Trust Co                             FIL                  69,400
Morgan Stanley London                         FIL                  39,870
ING Luxembourg                                FIL                  32,724
Brown Bros Harrimn Ltd Lux                    FIL                  14,059
Master Trust Bank of Japan                    FIJ                  128,500
Nomura Trust and Banking                      FIJ                  57,900
Trust & Cust Svcs Bk Ltd, Toko                FIJ                  34,860
Bank of New York Europe                       FII                  1,152,300
State Str Bk and Tr Co                        FICL                 317,100
State Street Hong Kong                        FIA(K)L              19,000

                                              GRAND TOTAL          26,153,107





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