Heritage-Transactions in Own Shares

LONDON, UNITED KINGDOM -- (Marketwire) -- 06/13/11 -- Heritage Oil Plc (TSX: HOC)(LSE: HOIL), an independent upstream exploration and production company, announces that on 10 June 2011 it purchased 650,000 Ordinary Shares to be held in treasury at 238.4630 pence per share (with a price range of 234.5 and 240.0 pence per share). Following this purchase, Heritage Oil Plc holds 5,783,160 Ordinary Shares in treasury, and has 283,222,770 Ordinary Shares in issue (excluding treasury shares) as well as 2,953,508 exchangeable shares of no par value of Heritage Oil Corporation each carrying one voting right in Heritage.

The total number of voting rights in Heritage, excluding treasury shares as at 10 June 2011 is 286,176,278.

The above figure (286,176,278) may be used by shareholders as the denominator for the calculations by which they will determine if they are required to notify their interest in, or a change to their interest in, Heritage under the FSA's Disclosure and Transparency Rules.

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 a producing property in Russia and exploration projects in
    the Kurdistan Region of Iraq, the Democratic Republic of Congo, Malta,
    Pakistan, Tanzania and Mali.

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

Contacts:
Heritage Oil Plc
Tony Buckingham
CEO
[phone]

Heritage Oil Plc
Paul Atherton
CFO
[phone]
[e-mail]

Heritage Oil Plc - Investor Relations
Tanya Clarke
[phone]
[e-mail]

Pelham Bell Pottinger - PR - Europe
Nick Lambert
[phone]
[e-mail]

Pelham Bell Pottinger - PR - Europe
Duncan Mayall
[phone]
[e-mail]

CHF Investor Relations - Investor Relations - Canada
Cathy Hume
[phone] x231
[e-mail]

CHF Investor Relations - Investor Relations - Canada
Jeanny So
[phone] x225
[e-mail]