Rockhopper Regulatory News (RKH)

1 July 2013

Rockhopper Exploration plc

("Rockhopper" or the "Company")

Total Voting Rights

In respect of the month of June 2013 the Company has on 26 June 2013 issued 864 shares as part of the Company's Share Incentive Plan ("SIP"). In conformity with the Financial Services Authority's Disclosure and Transparency Rules, the Company confirms that, as at 1 July 2013, the issued ordinary share capital of the Company consisted of 284,227,150 shares with voting rights attached (one vote per ordinary share).

The Company does not hold any shares in Treasury at the date of this disclosure. The issued share capital figure can be used by shareholders as the denominator for the calculations by which to determine if they are required to notify their interest in, or a change to their interest in, the Company under the FSA's Disclosure and Transparency Rules.

The issue of shares under the SIP have been made under the Company's existing block listing entitlement.

Enquiries:

Rockhopper Exploration plc Tel: 0207 920 2340

Sam Moody - Chief Executive (via M: Communications)

Peter Dixon-Clarke - Finance Director

Canaccord Genuity Limited (NOMAD and Joint Broker) Tel: 0207 523 8000

Henry Fitzgerald-O'Connor

Giles Fitzpatrick

M: Communications Tel: 0207 920 2340

Patrick d'Ancona