Update to Timetable

PRESS ANNOUNCEMENT

FOR IMMEDIATE RELEASE

THIS ANNOUNCEMENT IS NOT FOR RELEASE, PUBLICATION OR DISTRIBUTION, DIRECTLY OR INDIRECTLY, IN WHOLE OR IN PART, INTO OR FROM THE UNITED STATES, CANADA, AUSTRALIA, NEW ZEALAND, JAPAN OR ANY OTHER JURISDICTION WHERE TO DO SO WOULD CONSTITUTE A VIOLATION OF THE RELEVANT LAWS OF SUCH JURISDICTION. PLEASE SEE THE IMPORTANT INFORMATION NOTICE AT THE END OF THIS ANNOUNCEMENT

28 JANUARY 2013

JKX OIL AND GAS PLC ("JKX" OR THE "COMPANY" OR THE "GROUP")

UPDATE TO TIMETABLE

The Company wishes to advise Shareholders that, given that Qualifying Shareholders holding fewer than 2,098,420 Ordinary Shares will not have sufficient shares entitling them to subscribe for Bonds in the Open Offer, the London Stock Exchange will not be marking the Company's Shares as ex-entitlement.

Accordingly, the relevant date for all entitlements under the Open Offer will be the Record Date for the Open Offer, being 5.00 p.m. on 23 January 2013.

All capitalised terms used in this announcement are as set out in the circular posted to Shareholders today.

For further information, please contact:

JKX Oil & Gas plc Tel: +44 (0)20 7323 4464

Dr Paul Davies, Chief Executive Officer

Cynthia Dubin, Finance Director

ISM Capital LLP Tel: +44 (0)20 79388984

Christopher Thurn

Edward Males

Cardew Group Tel: +44 (0)20 7930 0777

Anthony Cardew

Nadja Vetter

Canaccord Genuity Hawkpoint Limited Tel: +44 (0)207 665 4500

Paul Baines