Holding(s) in Company

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

JKX Oil & Gas plc

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

An acquisition or disposal of voting rights

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

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

An event changing the breakdown of voting rights

Other (please Change in the beneficial ownership of the person subject to specify): notification obligation (Eclairs Group Limited)

X

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

ECLAIRS GROUP LIMITED

4. Full name of shareholder(s)

(if different from 3.):iv

HANOVER NOMINEES LIMITED

5. Date of the transaction and date on

which the threshold is crossed or reached: v

19 MARCH 2013

6. Date on which issuer notified:

21 MARCH 2013

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

27%

8. Notified details:

A: Voting rights attached to shares viii, ix

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 x

Direct

Direct xi

Indirect xii

Direct

Indirect

ORDINARY SHARES

GB0004697420

47,287,027

47,287,027

47,287,027

27.5457

B: Qualifying Financial Instruments

Resulting situation after the triggering transaction

Type of financial

instrument

Expiration date xiii

Exercise/ Conversion Period xiv

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

xv, xvi

Resulting situation after the triggering transaction

Type of financial

instrument

Exercise

price

Expiration date xvii

Exercise/

Conversion period xviii

Number of voting rights

instrument refers to

% of voting rights xix,

xx

Nominal

Delta

Total (A+B+C)

Number of voting rights

Percentage of voting rights

47,287,027

27.5457

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:

14. Contact name:

Mr Panikos Symeou

15. Contact telephone number:

Tel: +357 25 818400