Holding(s) in Company

Tullow Oil PLC
14 November 2006

                   NOTIFICATION OF MAJOR INTERESTS IN SHARES

1. Name of company

Tullow Oil plc


2. Name of shareholder having a major interest

IFG International Trust Company Limited


3. Please state whether notification indicates that it is in respect of holding
of the shareholder named in 2 above or in respect of a non-beneficial interest
or in the case of an individual holder if it is a holding of that person's
spouse or children under the age of 18

See 2 above


4. Name of the registered holder(s) and, if more than one holder, the number of
shares held by each of them

Registered Holder                            Number of Shares

Tarondo Limited                                11,196,342

Gemmill Limited                                11,196,341

Forest Nominees Limited                        16,567,683


5. Number of shares / amount of stock acquired



6. Percentage of issued class



7. Number of shares / amount of stock disposed



8. Percentage of issued class



9. Class of security

Ordinary 10p shares


10. Date of transaction



11. Date company informed

13 November 2006


12. Total holding following this notification

38,960,366


13. Total percentage holding of issued class following this notification

5.98%


14. Any additional information

Total shares in issue 651,475,682


15. Name of contact and telephone number for queries

Tom Hickey 0208 996 1000


16. Name and signature of authorised company official responsible for making
this notification

Tom Hickey


Date of notification

14 November 2006


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