Holding(s) in Company

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

UK Oil & Gas Investments PLC

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

An acquisition or disposal of voting rights

ü

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 specify):

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

MRS VIKTORIIA MASLENNIKOVA

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

HALB NOMINEES LIMITED

5. Date of the transaction and date onwhich the threshold is crossed orreached: v

5 JUNE 2014

6. Date on which issuer notified:

5 JUNE 2014

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

BELOW 3%

8. Notified details:

A: Voting rights attached to shares viii, ix

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 x

Direct

Direct xi

Indirect xii

Direct

Indirect

Ordinary 1p

31,373,300

31,373,300

32,873,300

32,873,300

3.0251%

GB00B085SD50

B: Qualifying Financial Instruments

Resulting situation after the triggering transaction

Type of financialinstrument

Expirationdate xiii

Exercise/Conversion Period xiv

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

% of votingrights

C: Financial Instruments with similar economic effect to Qualifying Financial Instruments xv, xvi

Resulting situation after the triggering transaction

Type of financialinstrument

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

32,873,300

3.0251%

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

MRS VIKTORIIA MASLENNIKOVA HAS A BENEFICIAL INTEREST IN UK OIL AND GAS INVESTMENTS PLC, HELD BY HALB NOMINEES LIMITED.

UK Oil & Gas Investments PLC

Tel: 020 7440 0640

David Lenigas / Donald Strang

Beaumont Cornish (Nominated Adviser)

Tel: 020 7628 3396

Roland Cornish / Michael Cornish / Emily Staples

XCAP Securities PLC (Corporate Broker)

Tel: 020 7101 7070

David Lawman

Square 1 Consulting (Public Relations)

Tel: 020 7929 5599

David Bick/Mark Longson