Holding(s) in Company

TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARES

1. Identity of the issuer or the underlying issuer of existing shares to which voting rights are attached:

JKX Oil & Gas plc

2 Reason for the notification (please tick the appropriate box or boxes):

An acquisition or disposal of voting rights

Yes

An acquisition or disposal of qualifying financial instruments which may result in the acquisition of shares already issued to which voting rights are attached

No

An acquisition or disposal of instruments with similar economic effect to qualifying financial instruments

No

An event changing the breakdown of voting rights

No

Other (please specify):

No

3. Full name of person(s) subject to the notification obligation:

Ralkon Commercial Ltd

4. Full name of shareholder(s) (if different from 3.):

IGOR KOLOMOISKY

5. Date of the transaction and date on which the threshold is crossed or reached:

August 04, 2010

6. Date on which issuer notified:

August 05, 2010

7. Threshold(s) that is/are crossed or reached:

23%

8. Notified details:

A: Voting rights attached to shares

Class/type of shares

if possible using the ISIN CODE

Situation previous to the triggering transaction

Resulting situation after the triggering transaction

Number of Shares

Number of Voting Rights

Number of shares

Number of voting rights

% of voting rights

Direct

Indirect

Direct

Indirect

GB0004697420

39 289 363

39 289 363

39 789 363

39 789 363

23.1849

B: Qualifying Financial Instruments

Resulting situation after the triggering transaction

Type of financial instrument

Expiration date

Exercise/ Conversion Period

Number of voting rights that may be acquired if the instrument is exercised/ converted.

% of voting rights

C: Financial Instruments with similar economic effect to Qualifying Financial Instruments

Resulting situation after the triggering transaction

Type of financial instrument

Exercise price

Expiration date

Exercise/ Conversion period

Number of voting rights instrument refers to

% of voting rights

Nominal

Delta

Total (A+B+C)

Number of voting rights

Percentage of voting rights

39789363

23.1849

9. Chain of controlled undertakings through which the voting rights and/or the financial instruments are effectively held, if applicable:

The shares of the issuer named in Section 1 above are held by Ralkon Commercial Limited. 100% of the shares in Ralkon Commercial Limited are held by Andri Kyriacou on trust for Igor Kolomoisky 

Proxy Voting:

10. Name of the proxy holder:

11. Number of voting rights proxy holder will cease to hold:

12. Date on which proxy holder will cease to hold voting rights:

13. Additional information:

NOTIFICATION USING THE TOTAL VOTING RIGHTS FIGURE OF 171 617 706

14. Contact name:

Grytsenko Volodymyr

15. Contact telephone number:

+38 0562 39-07-31