Holding(s) in Company

Scottish & Southern Energy PLC
13 April 2006



Scottish and Southern Energy plc

Holding (s) in Company


NOTIFICATION UNDER SECTION 198 TO 202 OF THE COMPANIES ACT 1985


The Company was notified on 12 April 2006 that The Capital Group Companies, Inc,
through various legal entities as listed below, has a notifiable interest in
34,218,824 ordinary 50p shares in Scottish and Southern Energy plc, being 3.97%
of the issued share capital of the company.

              Legal Entity                                                        

              Capital Guardian Trust Company            15,677,034
              Capital International Limited             13,188,915 
              Capital International S.A.                 1,987,900  
              Capital International, Inc                   964,975
              Capital Research and Management Company    2,400,000

              Registered Holder                                                      
                                                                   
              State Street Nominees Limited              1,707,168 
              Bank of New York Nominees                  1,104,400 
              Northern Trust                               156,700 
              Chase Manhattan Bank Australia Limited         5,300 
              Chase Nominees Limited                     7,390,700 
              BT Globenet Nominees Ltd                     338,900 
              Midland Bank plc                           1,370,200 
              Cede & Co                                     55,500 
              Deutsche Bank Mannheim                         1,300 
              Bankers Trust                                601,200 
              Barclays Bank                                 13,500 
              Brown Bros.                                   81,540 
              Nortrust Nominees                          1,821,250 
              MSS Nominees Limited                          35,600 
              State Street Bank & Trust Co.                 55,400 
              Citibank NA Toronto                           22,100 
              Deutsche Bank AG                               2,600 
              HSBC Bank plc                                    100 
              Mellon Bank N.A.                              84,600 
              Roy Nominees Limited                          15,600 
              Mellon Nominees (UK) Limited                 327,469 
              Bank One London                                3,000 
              HSBC                                          19,500 
              JP Morgan Chase Bank                         463,407 
              State Street Nominees Limited                135,500 
              Bank of New York Nominees                  2,672,631 
              Northern Trust                             1,435,155 
              Chase Nominees Limited                     2,798,000 
              Midland Bank plc                              82,900 
              Bankers Trust                                 82,100 
              Barclays Bank                                 67,700 
              Morgan Guaranty                              236,200 
              Nortrust Nominees                          1,860,700 
              MSS Nominees Limited                          34,100 
              State Street Bank & Trust Co.              1,187,229 
              Lloyds Bank                                   25,600 
              Citibank NA Toronto                          370,400 
              Deutsche Bank AG                              67,900 
              Chase Manhattan Nominee Ltd                   54,100 
              HSBC Bank plc                                860,400 
              Mellon Bank N.A.                             141,800 
              KAS UK                                        70,500 
              Bank One London                              147,300 
              HSBC                                           9,400 
              JP Morgan Chase Bank                          68,400 
              Raiffeisen Zentral Bank                      615,600 
              Fortis Bank                                   13,100 
              Metzier Seel Sohn & Co.                       57,700 
              Nordea Bank                                   76,700 
              Bayerische Hypo Und Vereinsbank AG            17,800 
              State Street Nominees Limited                 14,200 
              Bank of New York Nominees                      9,500 
              Chase Nominees Limited                       442,300 
              Midlands Bank plc                             65,400 
              Barclays Bank                                 13,000 
              Pictet & Cie, Geneva                          67,500 
              Nortrust Nominees                              9,900 
              Morgan Stanley                                11,600 
              J.P. Morgan                                  870,500 
              State Street Bank and Trust Co                36,300 
              Lloyds Bank                                   24,100 
              HSBC Bank plc                                235,300 
              Lombard Odier Et Cie, Geneva                 154,400 
              Metzier Seel Sohn & Co                        15,000 
              Credit Suisse, Zurich                         18,900 
              State Street Nominees Limited                305,800 
              Bank of New York Nominees                     96,275 
              Northern Trust                                 5,500 
              Chase Nominees Limited                       316,100 
              Midland Bank plc                               6,900 
              Bankers Trust                                 15,000 
              Nortrust Nominees                             92,500 
              State Street Bank & Trust Co.                 19,200 
              Citibank                                       3,100 
              Citibank NA Toronto                           48,100 
              HSBC Bank plc                                 42,500 
              JP Morgan Chase Bank                          14,000 
              Chase Nominees Limited                     2,400,000 
 





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