Holding(s) in Company

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

ROCKHOPPER EXPLORATION 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:

The Goldman Sachs Group, Inc.

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

Goldman, Sachs & Co.

Goldman Sachs International

Goldman Sachs Asset Management, L.P.

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

07 August 2013

6. Date on which issuer notified:

09 August 2013

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

7%

8. Notified details:

A: Voting rights attached to shares

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

Direct

Direct

Indirect

Direct

Indirect

GB00B0FVQX23

17,804,306

6.26%

20,211,017

7.11%

B: Qualifying Financial Instruments

Resulting situation after the triggering transaction

Type of financialinstrument

Expirationdate

Exercise/Conversion Period

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

% of votingrights

C: Financial Instruments with similar economic effect to Qualifying Financial Instruments

Resulting situation after the triggering transaction

Type of financialinstrument

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

20,211,017

7.11%

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

The Goldman Sachs Group, Inc. (parent company); 20,211,017 shares; 7.11%

Goldman Sachs (UK) L.L.C (Controlled by The Goldman Sachs Group, Inc.); 20,095,328 shares; 7.07%

Goldman Sachs Group Holding (UK) (Controlled by Goldman Sachs (UK) LLC); 20,095,328 shares; 7.07%

Goldman Sachs Holdings (UK) (Controlled by Goldman Sachs Group Holding (UK)); 20,095,328 shares; 7.07%

Goldman Sachs International (Controlled by Goldman Sachs Holdings (UK)); 20,095,328 shares; 7.07%

Goldman Sachs & Co.(Controlled by The Goldman Sachs Group, Inc)

Goldman Sachs Asset Management L.P (Controlled by The Goldman Sachs Group, Inc)

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:

General email contact:

[email protected]

14. Contact name:

Helen-Marie Moloney

15. Contact telephone number:

44(20)7774 8019