TR1 - Major interest in shares - PC

TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARESi

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

D1 Oils 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

YES

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 the notification obligation: iii

(a) Principle Capital Investments Limited (formerly Principle Capital Investment Trust plc) (26,473,330 shares)

(b) Principle Capital, L.P. (8,415,759 shares)

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

 (b) Chase Nominees Limited

5. Date of the transaction and date on which the threshold is crossed or reached: v

Date of transaction 13 October 2010

Date at which threshold is crossed in relation to the shares listed at 8A: 22 November 2010

Date at which threshold is crossed in relation to the qualifying financial instruments listed at 8B: 13 October 2010

6. Date on which issuer notified:

13 October 2010

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

27%,26%,25%.......below 3%

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 on 12 October 2010

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

£0.01 Ordinary

34,889,089

34,889,089

17,389,089

17,389,089

13.73

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

Call Option

31/3/2011

Any time

17,389,089

0

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

34,889,089

27.55

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

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:

The option referred to at 8B above can be exercised by the purchaser at any time until expiry on 31 March 2011.

14. Contact name:

Principle Capital Fund Managers Ltd

Brian Padgett

15. Contact telephone number:

+4122 908 1190