ENQUEST PLC — Proxy Solicitation & Information Statement 2010

Apr 20, 2010

area for personalisation
To be held at: Sofitel London St James Hotel, 6 Waterloo Place, London SW1Y 4AN On: Wednesday 25 May 2011 at 2.00pm If you wish to attend this meeting in your capacity as a holder of Ordinary shares, please sign this card and on arrival hand it to the Company's registrars. This will facilitate entry to the meeting.
Signature of person attending Bar Code:		area for personalisation
Investor Code:
EnQuest PLC – Annual General Mee ting area for personalisation			Bar Code:	area for
I/We being a member of the company hereby appoint the Chairman of the meeting or (see note 1) Name of proxy	Number of shares proxy appointed over		Investor Code:	personalisation
			Event Code:
as my/our proxy to vote on my/our behalf at the Annual General Meeting of the Company to be held at 2.00pm on Wednesday 25 May 2011 and at any adjournment thereof. I have indicated with a 'X' how I/we wish my/our votes to be cast on the following resolutions If you wish to appoint multiple proxies please see note 1 over. Please mark 'X' to indicate olutions how you wish to vote	Vote withheld Against	Res olutions	Please also tick here if you are appointing more than one proxy. Please mark 'X' to indicate how you wish to vote		Against
To receive the accounts and the reports of the directors	For	8			For
and auditors to 31 December 2010			To re-elect Alexandre Schneiter as a director of the Company To reappoint Ernst & Young LLP as auditors and to authorise
To re-elect James Buckee as a director of the Company		9	the Audit Committee to set their remuneration
To re-elect Amjad Bseisu as a director of the Company			10 To approve the directors' remuneration report
To re-elect Nigel Hares as a director of the Company			11 Authority for political donations and political expenditure
To re-elect Jonathan Swinney as a director of the Company			12 Authority to allot shares
To re-elect Helmut Langanger as a director of the Company			13 Authority to disapply statutory pre-emption rights
To re-elect Jock Lennox as a director of the Company			14 Authority to purchase own shares
		general meetings	15 To approve the notice period for extraordinary

Signature Date

To assist with arrangement, if you intend attending the meeting in person please place a 'X' in the box opposite

Notes

• 1. Every holder has the right to appoint some other person(s) of their choice, who need not be a shareholder as his proxy to exercise all or any of his rights, to attend, speak and vote on their 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 over). If the proxy is being appointed in relation to less than your full voting entitlement, please enter the number of shares in relation to which they are authorised to act as your proxy. If left blank your proxy will be deemed to be authorised in respect of your full voting entitlement (or if this proxy form has been issued in respect of a designated account for a shareholder, the full voting entitlement for that designated account). In the case of a corporation this form must be executed under its common seal or under the hand of an officer or attorney duly authorised.
• 1. To appoint more than one proxy you may photocopy this form. Please indicate the proxy holder's name and the number of shares in relation to which they are authorised to act as your proxy (which, in aggregate, should not exceed the number of shares held by you). Please also indicate if the proxy instruction is one of multiple instructions being given. All forms must be signed and should be returned together in the same envelope.
• 1. The right to appoint a proxy does not apply to persons whose shares are held on their behalf by another person and who have been nominated to receive communication from the Company in accordance with section 146 of the Companies Act 2006 ("nominated persons"). Nominated persons may have a right under an agreement with the registered shareholder who holds shares on their behalf to be appointed (or to have someone else appointed) as a proxy. Alternatively, if nominated persons do not have such a right, or do not wish to exercise it, they may have a right under such an agreement to give instructions to the person holding the shares as to the exercise of voting rights. Unless instructed otherwise, the proxy may also vote or abstain from voting as he or she thinks fit on any other business which may properly come before the Meeting (including amendments to resolutions).
• 1. The 'Vote Withheld' option 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.
• 1. Entitlement to attend and vote at the meeting and the number of votes which may be cast thereat will be determined by reference to the Register of Members of the Company at 6.00pm on 23 May 2011. 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. In the case of joint holders the signature of electronic registration of the first name on the Register of Members will be accepted to the exclusion of the votes of the other joint holders.
• 1. Shares held in uncertificated form (i.e. in CREST) may be voted through the CREST Proxy Voting Service in accordance with the procedures set out in the CREST manual.
• 1. The completion and return of this form will not preclude a member from attending the meeting and voting in person. If you attend the meeting in person, your proxy appointment will automatically be terminated.
• 1. The Form of Proxy over must arrive at Capita Registrars, 34 Beckenham Road, Beckenham, BR3 4TU during usual business hours accompanied by any Power of attorney under which it is executed (if applicable) no later than 2.00pm on 23 May 2011.
• 1. If you prefer, you may return the proxy form to the Registrar in an envelope addressed to FREEPOST RSBH-UXKS-LRBC, PXS, 34 Beckenham Road, Beckenham, BR3 4TU.

Business Reply Licence Number RSBH-UXKS-LRBC

PXS 34 Beckenham Road Beckenham BR3 4TU