Holding(s) in Company

Scottish & Southern Energy PLC
24 May 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 24 May 2006 that The Capital Group Companies, Inc,
through various legal entities as listed below, has a notifiable interest in
34,048,224 ordinary 50p shares in Scottish and Southern Energy plc, being 3.96%
of the issued share capital of the company.



Legal Entity                                                        

Capital Guardian Trust Company                                      15,659,434
                                                                    
Capital International Limited                                       13,048,615 

Capital International S.A.                                           1,987,900  

Capital International, Inc                                             952,275

Capital Research and Management Company                              2,400,000

                                                                     
                                                                   
Registered Holder                                                    
State Street Nominees Limited                                        1,754,768 
Bank of New York Nominees                                            1,116,500 
Northern Trust                                                         162,900 
Chase Manhattan Bank Australia Limited                                   5,300
Chase Nominees Limited                                               7,336,200  
BT Globenet Nominees Ltd                                               338,900
Midland Bank plc                                                     1,349,600 
Cede & Co                                                               62,000
Deutsche Bank Mannheim                                                   1,300 
Bankers Trust                                                          601,200
Barclays Bank                                                           13,500  
Brown Bros.                                                             81,540
Nortrust Nominees                                                    1,799,250  
MSS Nominees Limited                                                    35,600
State Street Bank & Trust Co.                                           56,700    
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                                                                    25,300
JP Morgan Chase Bank                                                   463,407
State Street Nominees Limited                                          135,500
Bank of New York Nominees                                            2,864,431  
Northern Trust                                                       1,690,855   
Chase Nominees Limited                                               2,806,000   
Midland Bank plc                                                        82,900 
Bankers Trust                                                           82,100
Barclays Bank                                                           67,700
Morgan Guaranty                                                        236,200
Nortrust Nominees                                                    1,959,800   
MSS Nominees Limited                                                    34,100
State Street Bank & Trust Co.                                        1,503,629
Lloyds Bank                                                             25,600
Citibank NA Toronto                                                    370,400
Deutsche Bank AG                                                        59,600 
Chase Manhattan Nominee Ltd                                             54,100 
HSBC Bank plc                                                          847,700
Mellon Bank N.A.                                                       141,800 
KAS UK                                                                  80,200
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
Midland 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.                                           16,900
Citibank                                                                 3,100
Citibank NA Toronto                                                     37,700
HSBC Bank plc                                                           42,500
JP Morgan Chase Bank                                                    14,000
Chase Nominees Limited                                               2,400,000




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