Holding(s) in Company

TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARESi

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

Leni Gas & Oil PLC

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

An acquisition or disposal of voting rights

X

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

Mr William Philip Seymour Richards

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

WH Ireland Limited

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

21/09/12

6. Date on which issuer notified:

27/09/12

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

3%, 4%

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 shares GB00B1TWX932

30,000,000

30,000,000

55,000,000

4.30%

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

55,000,000

4.30%

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

Mr William Philip Seymour Richards is the beneficial owner of the securities disclosed.

The legal title to these securities is held on behalf of Mr Richards by his nominee, WH Ireland Limited.

Proxy Voting:

10. Name of the proxy holder:

n/a

11. Number of voting rights proxy holder will ceaseto hold:

n/a

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

n/a

13. Additional information:

* this figure was calculated using 1,277,747,601 as notified by the Issuer's Nominated Advisor on 27/09/2012

14. Contact name:

Philip Richards

15. Contact telephone number:

020 7389 7000

David Lenigas

Neil Ritson

+44 (0)20 7440 0645

Nomad and Joint Broker

Rosalind Hill Abrahams

Roland Cornish

+44(0) 20 7628 3396

Joint Broker

Michael Parnes

Luca Tenuta

+44(0) 20 7493 8188

Financial PR

Mark Antelme

+44 (0) 20 7861 3232

Henry Lerwill