LONDON, UNITED KINGDOM -- (Marketwire) -- 11/08/12 -- Heritage Oil Plc (TSX:HOC)(LSE:HOIL), an independent upstream exploration and production company, in accordance with Listing Rule 3.5.6, notifies the following details in respect of the block listing for its Share Option Scheme and Exchangeable Shares:

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Name of applicant:                   Heritage Oil Plc                       
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Name of schemes:                     (a) Exchangeable Shares; and           
                                     (b) Share Option Scheme.               
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Period of return:     From:          7 May 2012         To: 7 November 2012 
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Balance of unallotted securities     21,715,918                             
under scheme(s) from previous        (a) 2,811,408 Ordinary Shares          
return:                              (b) 18,904,510 Ordinary Shares         
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Plus: The amount by which the block  Nil                                    
scheme(s) has been increased since                                          
the date of the last return (if any                                         
increase has been applied for):                                             
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Less: Number of securities           Nil                                    
issued/allotted under scheme(s)                                             
during period (see LR 3.5.7G):                                              
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Equals: Balance under scheme(s) not  21,276,428                             
yet issued/allotted at end of        (a) 2,371,918 Ordinary Shares          
period:                              (b) 18,904,510 Ordinary Shares         
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More information about the Company is available on the Company's website at www.heritageoilplc.com.

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 in its core areas of Africa, the Middle East
    and Russia.  
    
--  Heritage has an exploration, appraisal and development asset in the
    Kurdistan Region of Iraq, exploration assets in Malta, Tanzania,
    Pakistan, Libya and the Democratic Republic of Congo and a producing
    property in Russia.  
    
--  For further information please refer to our website,
    www.heritageoilplc.com.