TULLOW OIL PLC

Proxy Solicitation & Information Statement • Apr 10, 2012

Tullow Oil plc (the "Company") invites you to attend the Annual General Meeting of the Company to be held at Haberdashers' Hall, 18 West Smithfield, London EC1A 9HQ on 16 May 2012 at 12 noon.

Shareholder Reference Number

Please detach this portion before posting this Form of Proxy.

Form of Proxy - Annual General Meeting to be held on 16 May 2012

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You will be asked to enter the Control Number, the Shareholder Reference Number (SRN) and PIN and agree to certain terms and conditions.

To be effective, all Forms of Proxy must be lodged with the Company's Registrars at: Computershare Investor Services PLC, The Pavilions, Bridgwater Road, Bristol BS99 6ZY by 14 May 2012 at 12 noon.

Explanatory Notes:

• 1. Every member has the right to appoint some other person(s) of his choice, who need not be a shareholder, as his proxy to exercise all or any of his rights, to attend, speak and vote on his behalf at the meeting. If you wish to appoint a person other than the Chairman, please insert the name of your chosen proxy holder in the space provided (see reverse). If the proxy is being appointed in relation to less than your full voting entitlement, please enter in the box next to the proxy holder's name (see reverse) the number of shares in relation to which they are authorised to act as your proxy. If returned without an indication as to how the proxy shall vote on any particular matter, the proxy will exercise his discretion as to whether, and if so how, he votes (or if this Form of Proxy has been issued in respect of a designated account for a shareholder, the proxy will exercise his discretion as to whether, and if so how, he votes).
• To appoint more than one proxy, (an) additional Form(s) of Proxy may be obtained by $2_z$ contacting the Registrar's helpline on 0870 703 6242 or you may photocopy this form. Please indicate in the box next to the proxy holder's name (see reverse) the number of shares in relation to which they are authorised to act as your proxy. Please also indicate by marking the box provided if the proxy instruction is one of multiple instructions being given. All Forms of Proxy must be signed and should be returned together in the same envelope (if possible).
• The 'Vote Withheld' option overleaf is provided to enable you to abstain on any particular $3.$ resolution. However, it should be noted that a 'Vote Withheld' is not a vote in law and will not be counted in the calculation of the proportion of the votes 'For' and 'Against' a resolution.
• The Company specifies that only those shareholders registered on the Register of Members of the Company as at 6.00 p.m. on 14 May 2012 (or in the event that the meeting is adjourned, only those shareholders registered on the Register of Members of

Kindly Note: This Form of Proxy is issued only to the addressee(s) and is specific to the unique designated account printed hereon. This personalised Form of Proxy is not transferable between different: (i) account holders; or (ii) uniquely designated accounts. The Company and Computershare Investor Services PLC accept no liability for any instruction that does not comply with these conditions.

the Company as at 6.00 p.m. on the day which is two days prior to the adjourned meeting) shall be entitled to attend in person or by proxy and vote at the meeting in respect of the number of shares registered in their name at that time. Changes to entries on the Register of Members after that time shall be disregarded in determining the rights of any person to attend and vote at the meeting.

• To appoint one or more proxies or to give an instruction to a proxy (whether previously 5. appointed or otherwise) via the CREST system, CREST messages must be received by the issuer's agent (ID number 3RA50) not later than 48 hours before the time appointed for holding the meeting. For this purpose, the time of receipt will be taken to be the time (as determined by the timestamp generated by the CREST system) from which the issuer's agent is able to retrieve the message. The Company may treat as invalid a proxy appointment sent by CREST in the circumstances set out in Regulation 35(5)(a) of the Uncertificated Securities Regulations 2001.
• The address printed above is how your address appears on the Register of Members. If 6. this information is incorrect, please contact the Registrar's helpline on 0870 703 6242 to request a change of address form or go to www.investorcentre.co.uk to use the online Investor Centre service.
• $7.$ Any alterations made to this Form of Proxy should be initialled.
• $\mathbf{R}$ The completion and return of this Form of Proxy will not preclude a member from attending the meeting and voting in person.

All Named Holders

How to find Haberdashers' Hall

Haberdashers' Hall 18 West Smithfield London EC1A 9HQ

Tel: 0207 246 9988

Haberdashers' Hall is centrally positioned in West Smithfield opposite the historic St. Bart's Hospital. The West End is less than half a mile away and the Barbican and Farringdon underground stations and City Thameslink, close to the Old Bailey, are all within easy walking distance.

Form of Proxy - Tullow Oil plc
Please complete this box only if you wish to appoint a third party proxy other than the Chairman. Please leave this box blank if you want to select the Chairman. Do not insert your own name(s).

I/We hereby appoint the Chairman of the Annual General Meeting OR the person indicated in the box above as my/our proxy to attend, speak and vote in respect of
my/our full voting entitlement* on my/our behalf at the Annual General Meeting of Tullow Oil plc to be held at Haberdashers' Hall, 18 West Smithfield, London EC1A
9HQ on 16 May 2012 at 12 noon , and at any adjourned meeting.
* For the appointment of more than one proxy, please refer to Explanatory Note 2 (see front).

	Please mark here to indicate that this proxy appointment is one of multiple appointments being made. If you do not mark this box, this proxy instruction will overwrite any previous proxy instruction.		Vote		Please use a black pen. Mark with an 'X' inside the box as shown in this example.			$\mathbf{x}$ Vote
		For	Against Withheld			For	Against Withheld
1.	To receive and adopt the Company's annual accounts and associated reports.			11. To re-elect Angus McCoss as a Director.
2.	To declare a final dividend of 8.0p per ordinary share.			12. To re-elect Paul McDade as a Director.
3.	To receive and approve the Directors' Remuneration Report.			13. To re-elect Steven McTiernan as a Director.
	4. To elect Simon Thompson as a Director.			14. To re-elect lan Springett as a Director.
5.	To elect Steve Lucas as a Director.			15. To re-appoint Deloitte LLP as auditors.
6.	To re-elect Tutu Agyare as a Director.			16. To authorise the Audit Committee to determine the remuneration of Deloitte LLP.
	To re-elect David Bamford as a Director.			17. To renew Directors' authority to allot shares.
8.	To re-elect Ann Grant as a Director.			18. To dis-apply statutory pre-emption rights.
9.	To re-elect Aidan Heavey as a Director.			19. To authorise the Company to hold general meetings on no less than 14 clear days' notice.
	10. To re-elect Graham Martin as a Director.			20. To increase the limit on Directors' fees.

I/We instruct my/our proxy to vote on the resolutions proposed at the Annual General Meeting as indicated on this Form of Proxy. Unless otherwise instructed, the proxy may vote as he or she sees fit or abstain in relation to any business of the Annual General Meeting.

Signature

Date

In the case of a corporation, this Form of Proxy must be given under its common seal or be signed on its behalf by an attorney or officer duly authorised, stating their capacity (e.g. director, secretary).

H 1 0 4 8

$13$

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