Holding(s) in Company

Scottish & Southern Energy PLC
17 March 2006


Scottish and Southern Energy plc


Holding (s) in Company


17 March 2006


NOTIFICATION UNDER SECTION 198 TO 202 OF THE COMPANIES ACT 1985


The Company was notified on 17 March 2006 that The Capital Group Companies, Inc,
through various legal entities as listed below, has a notifiable interest in
34,384,226 ordinary 50p shares in Scottish and Southern Energy plc, being 3.99%
of the issued share capital of the company.



Legal Entity
Capital Guardian Trust Company                                      15,664,334
Capital International Limited                                       13,378,317 
Capital International S.A.                                           1,976,600  
Capital International, Inc                                             964,975
Capital Research and Management Company                              2,400,000


Registered Holder
State Street Nominees Limited                                        1,704,568
Bank of New York Nominees                                            1,095,600
Northern Trust                                                         119,400
Chase Manhattan Bank Australia Limited                                   5,300
Chase Nominees Limited                                               7,407,300   
BT Globenet Nominees Ltd                                               329,600  
Midland Bank plc                                                     1,369,200  
Cede & Co                                                               55,500
Deutsche Bank Mannheim                                                   1,300
Bankers Trust                                                          601,200
Barclays Bank                                                           13,500
Brown Bros.                                                             81,540
Nortrust Nominees                                                    1,825,550   
Royal Bank of Scotland                                                  42,100 
MSS Nominees Limited                                                    35,600
State Street Bank & Trust Co.                                           53,300 
RBSTB Nominees Ltd                                                       3,000
Citibank NA Toronto                                                     22,100
Deutsche Bank AG                                                         2,600
Mellon Bank N.A.                                                        67,000
Roy Nominees Limited                                                    15,600
Mellon Nominees (UK) Limited                                           330,569
HSBC                                                                    19,500
JP Morgan Chase Bank                                                   463,407
State Street Nominees Limited                                          135,500
Bank of New York Nominees                                            2,794,333   
Northern Trust                                                       1,435,155   
Chase Nominees Limited                                               2,886,400   
Midland Bank plc                                                        82,900
Bankers Trust                                                           82,100
Barclays Bank                                                           37,100
Citibank London                                                        443,800
Morgan Guaranty                                                        236,200 
Nortrust Nominees                                                    1,860,700  
Royal Bank of Scotland                                                 628,700 
MSS Nominees Limited                                                    34,100
State Street Bank & Trust Co.                                          365,329 
National Westminster Bank                                               79,000
Lloyds Bank                                                             25,600
Citibank NA Toronto                                                     21,100
Deutsche Bank AG                                                       902,000
Chase Manhattan Nominee Ltd                                             54,100
HSBC Bank plc                                                          860,400
Mellon Bank N.A.                                                       122,000 
KAS UK                                                                  70,500 
Bank One London                                                        147,300 
Clydesdale Bank plc                                                     51,100
HSBC                                                                     9,400
JP Morgan Chase Bank                                                    13,500
State Street Nominees Limited                                           14,200
Bank of New York Nominees                                                9,500
Chase Nominees Limited                                                 431,000 
Credit Suisse London Branch                                             18,900
Midlands Bank plc                                                       65,400 
Barclays Bank                                                           13,000
Pictet & Cie, Geneva                                                    10,000
Nortrust Nominees                                                        9,900
Morgan Stanley                                                          11,600
Royal Bank of Scotland                                                 151,500 
J.P. Morgan                                                            870,500 
National Westminster Bank                                               15,000
Lloyds Bank                                                             24,100
RBSTB Nominees Ltd                                                      60,400
Deutsche Bank AG                                                        36,300
HSBC Bank plc                                                          235,300  
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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