Publication of Prospectus

NOT FOR RELEASE, PUBLICATION OR DISTRIBUTION, IN WHOLE OR IN PART, DIRECTLYOR INDIRECTLY IN OR INTO AUSTRALIA, CANADA, JAPAN, THE REPUBLIC OF SOUTH AFRICA, THE UNITED STATES OR ANY OTHER JURISDICTION WHERE TO DO SO WOULD CONSTITUTE A VIOLATION OF THE RELEVANT LAWS OF SUCH JURISDICTION

This announcement is an advertisement and not a prospectus. Neither this announcement nor anything contained herein shall form the basis of, or be relied upon in connection with, any offer or commitment whatsoever in any jurisdiction. Investors should not purchase any transferable securities referred to in this announcement except on the basis of information contained in the prospectus (the "Prospectus") in its final form that is published by Rockrose Energy plc ("Rockrose" or the "Company") in connection with the admission of the Company's ordinary shares (the "Ordinary Shares") to listing on the standard segment of the Official List of the Financial Conduct Authority (the "FCA") and to trading on the main market for listed securities (the "Main Market") of London Stock Exchange plc (the "London Stock Exchange"). This announcement is not an offer to sell, or a solicitation of an offer to acquire, securities in the United States, Australia, Canada, Japan or in any other jurisdiction.

For immediate release

14 February 2018

Rockrose Energy plc

(Incorporated in England and Wales with company number 09665181)

Publication of Prospectus

London, 14 February 2018 - The Company is pleased to announce today the publication of its Prospectus in relation to the admission of 15,333,334 Ordinary Shares of £0.20 each to listing on the standard segment of the Official List of the FCA (under Chapter 14 of the Listing Rules of the FCA) and to trading on the Main Market of the London Stock Exchange (together, "Admission").

It is expected that Admission will become effective and that dealings will commence at 8 a.m. on 19 February 2018.

The Prospectus will be available from the Company's registered office at Cooley Services Limited, Dashwood, 69 Old Broad Street, London EC2M 1QS and online at www.rockroseenergy.com/investor-relations/reports/ (subject to applicable securities laws).

An electronic copy of the Prospectus will also be submitted to the National Storage Mechanism and should be available shortly for inspection at http://www.morningstar.co.uk/uk/NSM.

Enquiries:

Rockrose Energy plc +44 (0)20 3826 4800

Broker:Hannam & Partners (Advisory) LLP

Giles Fitzpatrick / Andrew Chubb +44 (0)20 7907 8500

Financial PR:

Camarco

Billy Clegg +44 (0)20 3757 4980

Owen Roberts

Ollie Head

 For further information, please visit the Company's website at www.rockroseenergy.com.