Annual Information Update

Tullow Oil PLC
09 May 2008



                         Tullow Oil plc (the 'Company')



              Annual Information Update - 9 May 2007 to 8 May 2008



In accordance with Prospectus Rule 5.2 the Company gives notice that the
following information has been published or made available to the public over
the previous 12 months.



1.                  Regulatory Announcements



The following regulatory announcements have been made by the Company via RNS, a
Regulatory Information Service:



Date of Announcement                                   Regulatory Headline



8 May 2008                                            Blocklisting Interim
Review

7 May 2008                                            Drilling Update

6 May 2008                                            Operations Update

30 April 2008                                         Total Voting Rights

30 April 2008                                         Appraisal Well Update

28 April 2008                                         Board Change

15 April 2008                                         Document Availability

3 April 2008                                           Directors/PDMR
Shareholding

3 April 2008                                           Sale of 10 CMS Blocks

2 April 2008                                           Total Voting Rights

31 March 2008                                       Retirement of Director

25 March 2008                                       Holding in Company

18 March 2008                                       Holding in Company

13 March 2008                                       Award of Share Options

13 March 2008                                       Holding in Company

12 March 2008                                       Final Results - Part 1

12 March 2008                                       Final Results - Part 2

12 March 2008                                       Final Results - Part 3

29 February 2008                                               Total Voting
Rights

25 February 2008                                               Exploration
Update

31 January 2008                                                Total Voting
Rights

31 January 2008                                                Sale of Interest
in M'Boundi

23 January 2008                                                Trading Statement

3 January 2008                                      Director/PDMR Shareholding

31 December 2007                                 Total Voting Rights

21 December 2007                                 Director/PDMR Shareholding

20 December 2007                                 Well Update

6 December 2007                                               Holding in Company

3 December 2007                                               Electronic
Shareholder Communications

30 November 2007                                 Total Voting Rights

30 November 2007                                 Holding in Company

29 November 2007                                 Blocklisting Interim Review

22 November 2007                                 International Activity Update

31 October 2007                                                Total Voting
Rights

30 October 2007                                                Holding in
Company

24 October 2007                                                Directorate
Change

15 October 2007                                                Analyst Visit and
Activity Update

12 October 2007                                                Holding in
Company

9 October 2007                                      Well Update

2 October 2007                                      Director/PDMR Shareholding

2 October 2007                                      Tullow MPuta-4 Appraisal

28 September 2007                                Holding in Company

28 September 2007                                Total Voting Rights

18 September 2007                                Well Update

4 September 2007                                  Interim Results - Part 1

4 September 2007                                  Interim Results - Part 2

3 September 2007                                  UK Exploration Update

31 August 2007                                      Total Voting Rights

23 August 2007                                      Mputa-3 Appraisal

22 August 2007                                      Exploration Update

31 July 2007                                          Total Voting Rights

12 July 2007                                          Holding in Company

11 July 2007                                          Trading Statement

9 July 2007                                            Holding in Company

3 July 2007                                            Director/PDMR
Shareholding

2 July 2007                                            Total Voting Rights

2 July 2007                                            Holding in Company

18 June 2007                                         Significant Oil Discovery

15 June 2007                                         Holding in Company

30 May 2007                                          AGM - Resolutions

30 May 2007                                          AGM Statement

15 May 2007                                          Holding in Company

9 May 2007                                            Annual Information Update



Copies of the documents published via RNS may be obtained from the Regulatory
News Service provided by the London Stock Exchange (www.londonstockexchange.com/
rns) market news under code TLW and at the Company's website at
www.tullowoil.com .




2.                  Documents filed with the Registrar of Companies



The following documents have been filed by the Company with the Registrar of
Companies at Companies House:



Date of Filing                                      Type
Description of Document



15 April 2008                                         88(2)
Return of Allotment of Shares (2)

14 April 2008                                         288b
Director Resigned

17 March 2008                                       363a                 Annual
Return made up to 04/02/08

10 March 2008                                       288b
Secretary Resigned

10 March 2008                                       288a
Secretary Appointed

22 January 2008                                                395
     Particulars of Mortgage / Charge

22 January 2008                                                395
     Particulars of Mortgage / Charge

22 January 2008                                                395
     Particulars of Mortgage / Charge

15 January 2008                                                88(2) O
   Return of Allotment of Shares

8 January 2008                                      88(2) R             Return
of Allotment of Shares (3)

8 January 2008                                      288b
Director Resigned

27 October 2007                                                88(2) R
   Return of Allotment of Shares

18 September 2007                                88(2) R
Return of Allotment of Shares (2)

9 August 2007                                        395
Particulars of Mortgage / Charge

6 August 2007                                        AA                    Group
of Companies' Accounts made up to

31/12/06

3 August 2007                                        395
Particulars of Mortgage / Charge

3 August 2007                                        395
Particulars of Mortgage / Charge

3 August 2007                                        395
Particulars of Mortgage / Charge

27 July 2007                                          88(2) R             Return
of Allotment of Shares (2)

26 June 2007                                         88(2) R             Return
of Allotment of Shares

21 June 2007                                         288c
Directors' Particulars Changed

20 June 2007                                         Res 11
Authorise Allotment of Security 30/05/07


    Disapply Pre-empt Rights 30/05/07

10 May 2007                                          88(2) R             Return
of Allotment of Shares (2)



Copies of the documents listed above can be obtained from Companies House, Crown
Way, Cardiff (email: [e-mail]) or, if you are a
registered user, through Companies House Direct at
www.direct.companieshouse.gov.uk.




3.         Documents sent to shareholders or lodged with the UKLA and Irish
Stock Exchange Document Viewing Facilities:



The following documents have been sent to the Company's shareholders and lodged
with the UKLA and Irish Stock Exchange Document Viewing Facilities.



Date                                         Brief Description of Document(s)



15 April 2008                             2007 Annual Report and Accounts and
Circular Regarding the 2008 Annual General Meeting

15 April 2008                             Year in Review to 31 December 2007

11 September 2007                    Interim Results





Copies of these documents may be viewed at the Document Viewing Facilities of
the UK Listing Authority at 25 The North Colonnade, Canary Wharf, London E14 5HS
and of the Irish Stock Exchange at Irish Stock Exchange at 28 Anglesea Street,
Dublin 2, Ireland.



The information referred to in this update was current at the time of
publication but some information may now be out of date. The Company does not
undertake any obligation to update any such information in the future. No
representation is made to the accuracy or completeness of such information and
neither this Annual Information Update, not the information referred to above,
constitutes an offer of any securities nor a recommendation in respect of any
securities.



Copies of this Annual Information Update and the documents referred to within it
are held at and can be obtained from the Company Secretary at the registered
office of the Company, 3rd Floor, Building 11, Chiswick Park, 566 Chiswick High
Road, London, W4 5YS.

Inquiries

Graham Martin
Company Secretary

[phone]









This announcement has been issued through the Companies Announcement Service of

                            The Irish Stock Exchange








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