LONDON, UNITED KINGDOM--(Marketwired - May 28, 2013) -

THIS PRESS RELEASE IS NOT FOR DISTRIBUTION TO UNITED STATES NEWSWIRE SERVICES OR FOR DISSEMINATION IN THE UNITED STATES.

Heritage Oil Plc (News - Market indicators)(LSE:HOIL), an independent upstream exploration and production company, in accordance with Prospectus Rule 5.2, gives notice that the following information has been published or made available to the public over the previous twelve months.

1. Regulatory Announcements

The following regulatory announcements have been made by the Company via RNS, a Regulatory Information Service.

Copies of the documents published via RNS may be obtained from the Regulatory News Service provided by the London Stock Exchange (www.londonstockexchange.com) market news under code HOIL and also at the Company's website, www.heritageoilplc.com.

2. Information Filed at Jersey Companies Registry

The following documents have been filed with the Jersey Companies Registry.

Copies of the documents listed above can be obtained from the Registrar of Companies, Jersey Financial Services Commission, PO Box 267, 14-18 Castle Street, St Helier, JE4 8TP, Jersey, Channel Islands.

3. Documents Filed with the UKLA

Copies of the following documents were submitted to the UK Listing Authority on or around the dates indicated.

Copies of these documents may be viewed at the National Storage Mechanism's website, www.hemscott.com/nsm.do.

4. Documents Sent to Shareholders

The following documents have been sent to the Company's shareholders on or around the dates indicated.

Copies of this Annual Information Update and the above documents may be obtained from the Company Secretary at Woodbourne Secretaries (Jersey) Limited, Ordnance House, 31 Pier Road, St Helier, JE4 8PW, Jersey, Channel Islands and from the Company's website at www.heritageoilplc.com.

The information referred to in this update was current at the time of publication but some information may now be out of date. The Company does not undertake any obligation to update any such information in the future. No representation is made to the accuracy or completeness of such information and neither this Annual Information Update, nor the information referred to above, constitutes an offer of any securities nor a recommendation in respect of any securities.

Notes to Editors

• Heritage is listed on the Main Market of the London Stock Exchange and is a constituent of the FTSE 250 Index. The trading symbol is HOIL. Heritage has a further listing on the Toronto Stock Exchange (TSX: HOC).

• Heritage is an independent upstream exploration and production company engaged in the exploration for, and the development, production and acquisition of, oil and gas internationally.

• Heritage has producing assets in Nigeria and Russia and exploration assets in Tanzania, Papua New Guinea, Malta, Libya and Pakistan.

• All dollars are US$ unless otherwise stated.

• For further information please refer to our website, www.heritageoilplc.com

If you would prefer to receive press releases via email please contact Jeanny So (jeanny@chfir.com) and specify "Heritage press releases" in the subject line.