Holding(s) in Company

Scottish & Southern Energy PLC
13 July 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 13 July 2006 that The Capital Group Companies, Inc,
through various legal entities as listed below, has a notifiable interest in
34,647,956 ordinary 50p shares in Scottish and Southern Energy plc, being 4.02%
of the issued share capital of the company.

Legal Entity                                                        
Capital Guardian Trust Company                                      16,073,366
Capital International Limited                                       13,099,615 
Capital International S.A.                                           2,102,300  
Capital International, Inc                                             972,675

Capital Research and Management Company                              2,400,000
                                                                     
Registered Holder                                                      
State Street Nominees Limited                                        1,745,168    
Bank of New York Nominees                                            1,229,749
Northern Trust                                                         175,200
Chase Manhattan Bank Australia Limited                                   5,300
Chase Nominees Limited                                               7,355,283   
BT Globenet Nominees Ltd                                               346,000  
Midland Bank plc                                                     1,357,400  
Cede & Co                                                               62,000
Deutsche Bank Mannheim                                                   1,300
Bankers Trust                                                          601,200 
Barclays Bank                                                           13,500
Citibank London                                                          2,200
Brown Bros.                                                             83,240
Nortrust Nominees                                                    1,977,550   
MSS Nominees Limited                                                    35,600 
State Street Bank & Trust Co.                                           71,800  
Citibank NA Toronto                                                     22,100
Deutsche Bank AG                                                         2,600
HSBC Bank plc                                                              800
Mellon Bank N.A.                                                        98,400
Roy Nominees Limited                                                    15,600
Mellon Nominees (UK) Limited                                           382,669
HSBC                                                                    25,300
JP Morgan Chase Bank                                                   463,407
State Street Nominees Limited                                          150,200
Bank of New York Nominees                                            2,970,731   
Northern Trust                                                       1,726,155   
Chase Nominees Limited                                               2,693,200   
Midland Bank plc                                                        82,900
Bankers Trust                                                           82,100
Barclays Bank                                                           37,100
Morgan Guaranty                                                        236,200
Nortrust Nominees                                                    1,963,600   
MSS Nominees Limited                                                    34,100 
State Street Bank & Trust Co.                                          539,329
Lloyds Bank                                                             27,300
Citibank                                                                 3,200
Citibank NA Toronto                                                    370,400
Deutsche Bank AG                                                        59,600
Chase Manhattan Nominee Ltd                                             54,100
HSBC Bank plc                                                          815,800 
Mellon Bank N.A.                                                       141,800 
Northern Trust AVFC                                                     28,000
KAS UK                                                                  80,200 
Mellon Nominees (UK) Limited                                            17,200
Bank One London                                                        158,600
HSBC                                                                     9,400
JP Morgan Chase Bank                                                    49,600
Raiffeisen Zentral Bank                                                603,500 
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                                                 544,400 
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                                          82,800
Lloyds Bank                                                             22,500
HSBC Bank plc                                                          235,300 
JP Morgan Chase Bank                                                    18,800
Lombard Odier Et Cie, Geneva                                           103,000
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                                                 325,300 
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                                                     56,300
HSBC Bank plc                                                           35,100
JP Morgan Chase Bank                                                    14,000
Chase Nominees Limited                                               2,400,000




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