DCP.L Regulatory News (DCP)

TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARES

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

DiamondCorp 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 specify):

Shares acquired in placing

 YES

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

JPMorgan Asset Management Holdings Inc.

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

JPMorgan Asset Management (UK) Limited

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

06 April 2010

6. Date on which issuer notified:

08 April 2010

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

10% upwards

8. Notified details:

A: Voting rights attached to shares

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

Direct

Direct

Indirect

Direct

Indirect

 3,505,000

 3,505,000

14,884,121

 10.02%

 GB00B183ZC46

B: Qualifying Financial Instruments

Resulting situation after the triggering transaction

Type of financial instrument

Expiration date

Exercise/ Conversion Period

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

Resulting situation after the triggering transaction

Type of financial instrument

Exercise price

Expiration date

Exercise/ Conversion period

Number of voting rights instrument refers to

% of voting rights

Nominal

Delta

Total (A+B+C)

Number of voting rights

Percentage of voting rights

 14,884,121

 10.02%

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

Total disclosable holding for JP Morgan Asset Management Holdings Inc 14,884,121 (10.02%)

JP Morgan Asset Management (UK) Limited 14,884,121 (10.02%)

Proxy Voting:

10. Name of the proxy holder:

 N/A

11. Number of voting rights proxy holder will cease to hold:

 N/A

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

 N/A

13. Additional information:

 N/A

14. Contact name:

 Tracey Young

15. Contact telephone number:

 020 7777 0424