JKX.L Regulatory News (JKX)

6 Cavendish Square, London W1G 0PD, England, UK

Tel: +44 (0)20 7323 4464 Fax: +44 (0)20 7323 5258

Web site: http://www.jkx.co.uk

JKX Oil & Gas plc - Total Voting Rights and Capital

JKX informs the market that as at 1st May 2010 JKX capital consists of 170,915,922 ordinary shares of 10 pence each with voting rights. JKX Oil & Gas plc holds 402,771 ordinary shares in Treasury.

Therefore, the total number of voting rights in JKX Oil & Gas plc is 170,513,151.

The above figure 170,513,151 may be used by shareholders as the denominator for the calculations by which they will determine if they are required to notify their interest in, or a change to their interest in, JKX Oil & Gas plc under the FSA's Disclosure and Transparency Rules.

ENDS

For further information please contact:

Catherine Maitland / Alexandra Stoneham Cardew Group 0207 930 0777