Holding(s) in Company

Scottish & Southern Energy PLC
31 July 2003

31 July 2003

                        Scottish and Southern Energy plc

                        Companies Act 1985 (as amended)
                       Disclosure of Interests in Shares



In accordance with Part VI of the Companies Act 1985 (as amended), Scottish and
Southern Energy plc ('SSE') has been informed that Prudential plc and certain of
its subsidiary companies have a notifiable interest in the issued share capital
as detailed below:


               Registered Holder                           Holding                %


Prudential plc                                          31,791,805       3.69 Total Notifiable Interest

             M&G (LOMBARD ST) NOMS PPE                      24,003
             MAGIM HSBC GIS NOM(UK) SALI                    70,492
             MGIM A/C DBL A/C FBFT                          88,591
             MGIM A/C JPM A/C RU                         5,486,974
             PRUCLT HSBC GIS NOM(UK) PAC AC             24,707,336
             PRUCLT HSBC GIS NOM(UK) PPL AC              1,063,277
             PRUCLT HSBC GIS NOM(UK) SAL AC                  7,514
             ROY NOMINEES 578079                            68,371
             ROY NOMS LTD 578052                            39,330
             ROY NOMS LTD 578141                            77,030
             ROY NOMS LTD 578192                           158,887

The Prudential Assurance Company Limited                25,848,619       3.00
             MAGIM HSBC GIS NOM(UK) SALI                    70,492
             PRUCLT HSBC GIS NOM(UK) PAC AC             24,707,336
             PRUCLT HSBC GIS NOM(UK) PPL AC              1,063,277
             PRUCLT HSBC GIS NOM(UK) SAL AC                  7,514





Percentage holdings are calculated using an issued share capital of 859,331,703
ORD GBP0.50 shares.




Issued by:
Denis Kerby                                            0870 900 0410
Investor Relations Manager




                      This information is provided by RNS
            The company news service from the London Stock Exchange