Total Voting Rights

29 May 2015

Rockhopper Exploration plc

("Rockhopper" or the "Company")

Total Voting Rights

Total Voting Rights

In respect of the month of May 2015 the Company has on 29 May 2015 issued 10,224 shares as part of the Company's Share Incentive Plan ("SIP").

In addition, 7,920 shares were allotted on 19 May 2015 in respect of options exercised under the Rockhopper Exploration PLC Unapproved Non-Employee Share Option Scheme.

In conformity with the Financial Conduct Authority's Disclosure and Transparency Rules, the Company confirms that, as at 29 May 2015, the issued ordinary share capital of the Company consisted of 296,479,385 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 FCA'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

Jan Davies, Company Secretary

Tel. +44 (0)20 7016 9571 (via Vigo Communications)

Canaccord Genuity Limited

Henry Fitzgerald-O'Connor

Tel. +44 (0) 20 7523 8000

Vigo Communications

Peter Reilly

Tel. +44 (0)20 7016 9571