TULLOW OIL PLC — Proxy Solicitation & Information Statement 2014

Mar 24, 2014

TULLOW

AGM Attendance Card

Please bring this card with you to the Annual General Meeting and present it at shareholder registration/accreditation.

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 30 April 2014 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 30 April 2014

Cast your Proxy online...It's fast, easy and secure! www.investorcentre.co.uk/eproxy

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

Control Number: 912095

SRN:

PIN:

View the Annual Report online: http://www.tullowoil.com/ara2013

Register at www.investorcentre.co.uk - elect for electronic communications & manage your shareholding online!

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 28 April 2014 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).
2. To appoint more than one proxy, (an) additional Form(s) of Proxy may be obtained by contacting the Registrar's helpline on +44 (0) 870 703 6242 or you may photocopy this Form of Proxy. 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).

3. The 'Vote Withheld' option overleaf is provided to enable you to abstain on any particular 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.

4. The Company specifies that only those shareholders registered on the Register of Members of the Company as at 6.00 p.m. on 28 April 2014 (or in the event that the meeting is adjourned, only those shareholders registered on the Register of Members of 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.

5. To appoint one or more proxies or to give an instruction to a proxy (whether previously appointed or otherwise) via the CREST system, CREST messages must be received by the issuer's agent (ID number 3RA50) not later than 12 noon on 28 April 2014. 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.
6. The address printed above is how your address appears on the Register of Members. If this information is incorrect please contact the Registrar's helpline on +44 (0) 870 703 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.
8. The completion and return of this Form of Proxy will not preclude a member from attending the meeting and voting in person.

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 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.

All Named Holders

SG148

115646_71599_RUN_ONS/000001/000001/SG148/i

122C3E D01

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How to find Haberdashers' Hall

Haberdashers' Hall
18 West Smithfield
London
EC1A 9HQ
Tel: +44 (0) 207 246 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 30 April 2014 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.

Please use a black pen. Mark with an 'X' inside the box as shown in this example. ☐

1. To receive and adopt the Company's annual accounts and associated reports. ☐ ☐ ☐
2. To declare a final dividend of 8.0p per ordinary share. ☐ ☐ ☐
3. To approve the Directors Remuneration Policy Report. ☐ ☐ ☐
4. To approve the Annual Statement by the Chairman of the Remuneration Committee and the Annual Report on Remuneration. ☐ ☐ ☐
5. To elect Jeremy Wilson as a Director. ☐ ☐ ☐
6. To re-elect Tutu Agyare as a Director. ☐ ☐ ☐
7. To re-elect Anne Drinkwater as a Director. ☐ ☐ ☐
8. To re-elect Ann Grant as a Director. ☐ ☐ ☐
9. To re-elect Aidan Heavey as a Director. ☐ ☐ ☐
10. To re-elect Steve Lucas as a Director. ☐ ☐ ☐
11. To re-elect Graham Martin as a Director. ☐ ☐ ☐

For	Against	Vote Withheld
12. To re-elect Angus McCoss as a Director.	☐	☐
13. To re-elect Paul McDade as a Director.	☐	☐
14. To re-elect Ian Springett as a Director.	☐	☐
15. To re-elect Simon Thompson as a Director.	☐	☐
16. To re-appoint Deloitte LLP as auditors of the Company.	☐	☐
17. To authorise the Audit Committee to determine the remuneration of Deloitte LLP.	☐	☐
18. To renew Directors' authority to allot shares.	☐	☐
19. To dis-apply statutory pre-emption rights.	☐	☐
20. To authorise the Company to hold general meetings on no less than 14 clear days' notice.	☐	☐
21. To authorise the Company to purchase it's own shares.	☐	☐

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 sees fit or abstain in relation to any business of the Annual General Meeting.

Signature

Date

DD/MM/YY

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).

CCS0086 01
TULL
122C3E D01