JKX informs the market that as at 7 May 2008 JKX capital consists of 156,907,355 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 156,504,584.

The above figure of 156,504,584 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:

Sofia Rehman  / Matthew Law               Cardew Group  T: 0207 930 0777