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:

January 28, 2011

6. Date on which issuer notified:

February 01, 2011

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

27%

8. Notified details:

A: Voting rights attached to shares

Class/type ofshares

if possible usingthe ISIN CODE

Situation previousto the triggeringtransaction

Resulting situation after the triggering transaction

NumberofShares

NumberofVotingRights

Numberof shares

Number of votingrights

% of voting rights

Direct

Indirect

Direct

Indirect

GB0004697420

45,260,427

45,260,427

46,432,027

46,432,027

27.0555

B: Qualifying Financial Instruments

Resulting situation after the triggering transaction

Type of financialinstrument

Expirationdate

Exercise/ConversionPeriod

Number of votingrights that may beacquired if theinstrument isexercised/ converted.

% of votingrights

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

Resulting situation after the triggering transaction

Type of financialinstrument

Exerciseprice

Expirationdate

Exercise/Conversionperiod

Number of votingrights instrumentrefers to

% of voting rights

Nominal

Delta

Total (A+B+C)

Number of voting rights

Percentage of voting rights

46 432 027

27.0555

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

The shares of the issuer named in Section 1 above are held by Ralkon Commerical 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