Holding(s) in Company

For filings with the FSA include the annex

For filings with issuer exclude the annex

TR-1: Notifications of Major Interests 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 notification (yes/no)

An acquisition or disposal of voting rights

Yes

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

No

An event changing the breakdown of voting rights

 No

Other (please specify):______________

 No

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

RALKON COMMERCIAL LTD

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

Igor Kolomolsky

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

July 12, 2010

6. Date on which issuer notified:

July 13, 2010

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

21%

8: Notified Details

A: Voting rights attached to shares

Class/type of shares

If possible use 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

Percentage of voting rights

Direct

Indirect

Direct

Indirect

GB0004697420

31 393 200

31 393 200

36 139 363

36 139 363

0

21.0097

0

B: Financial Instruments

Resulting situation after the triggering transaction

Type of financial instrument

Expiration date

Exercise/ conversion period/date

No. of voting rights that may be acquired (if the instrument exercised/converted)

Percentage of voting rights

Total (A+B)

Number of voting rights

Percentage of voting rights

36 139 363

21.0097

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 Share in Ralkon Commercial Limited are held by Andri Kyriacou on trust for Igor Kolomolsky

Proxy Voting:

10. Name of 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 172 013 151

14 Contact name:

Grytsenko Volodymyr

15. Contact telephone number:

+38 0562 39-07-31