Holding(s) in Company

Tullow Oil PLC
21 September 2004


                         Tullow Oil plc ('the Company')

                               Holding in Company


Tullow Oil was notified on 20 September 2004 by M & G Investment Mangement
Limited that Prudential plc and all of its subsidiary companies no longer have a
notifiable  interest in the issued share capital of the Company.


21 September 2004



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