Enquest Regulatory News (ENQ)

Publication of Supplementary Prospectus

("EnQuest")

The following Supplement was approved by the UK Listing Authority on 18 November 2013 and is available for viewing on the website of the London Stock Exchange plc:

Supplement dated 18 November 2013 relating to the Prospectus (the "Prospectus") dated 24 January 2013 for the £500,000,000 Euro Medium Term Note Programme established by EnQuest PLC

To view the Supplement, please paste the following URL into the address bar of your browser.

Supplement

http://www.rns-pdf.londonstockexchange.com/rns/2967T_-2013-11-18.pdf

The Supplement has also been submitted to the National Storage Mechanism and will shortly be available for inspection at: www.hemscott.com/nsm.do.

The Supplement is not provided for, or directed at, U.S. persons or persons in the United States. If you are a U.S. person or are viewing this page from the United States, you should exit this section of the website.

-Ends-

DISCLAIMER - INTENDED ADDRESSEES

Please note that the information contained in the Supplement and/or the Prospectus may be addressed to and/or targeted at persons who are residents of particular countries (specified in the Supplement and/or the Prospectus) only and is not intended for use and should not be relied upon by any person outside these countries and/or to whom the offer contained in the Supplement and/or the Prospectus is not addressed. Prior to relying on the information contained in the Supplement and/or the Prospectus, you must ascertain from the Supplement and/or the Prospectus whether or not you are part of the intended addressees of the information contained therein.

Your right to access this service is conditional upon complying with the above requirement.