Prospectus re Admission to the Official List - Heritage Oil

‘‘Support Agreement’’‘‘Transfer Agent’’‘‘Trustee’’‘‘TNK-BP’’‘‘TSX’’‘‘Tullow’’‘‘Uganda’’‘‘U.K.’’ or ‘‘United Kingdom’’‘‘UNITA’’‘‘U.S.’’ or ‘‘United States’’‘‘U.S. Person’’‘‘Voting and Exchange Trust’’the agreement entered into on 17 March 2008 between theCompany, DutchCo, Alberta CallCo and HOC described insection 10.3 of Part X of this documentmeans Computershare Trust Company of Canada or such otherperson as may from time to time be appointed by HOC as theregistrar and transfer agent for the Exchangeable Sharesmeans Computershare Canada and, subject to the provisions ofArticle 9 of the Voting and Exchange Trust Agreement, includesany successor trusteeTyumenskaia Neftanaia Companiyathe Toronto Stock ExchangeTullow Oil PLCthe Republic of Ugandathe United Kingdom of Great Britain and Northern IrelandNational Union for the Total Independence of Angolathe United States of America, its territories and possessions, anystate of the United States of America and the District ofColumbia and all other areas subject to its jurisdictionhas the meaning ascribed to such term in Regulation S of theSecurities Act, as amendedan agreement entered into among the Company, HOC, AlbertaCallCo and the Trustee substantially in the form of Schedule 4 tothe Arrangement Agreement‘‘Voting and Exchange Trusta voting and exchange trust agreement entered into by theAgreement’’ Company, HOC Alberta CallCo and the Trustee, on27 February 2008, the terms of which are set out in section 10.2of Part X of this document‘‘Voting Rights’’‘‘C$’’ or ‘‘Canadian Dollars’’ or‘‘Cdn’’the right to receive notice of, attend (in person or by proxy or bycorporate representative), speak (in person or by corporaterepresentative) and to cast (in person or by proxy or bycorporate representative) one vote per share on a poll vote, orone vote per Shareholder on a show of hands, at generalmeetings of the Company, whether available to a Shareholder byvirtue of a holding of Ordinary Shares or the SpecialVoting Sharethe lawful currency of Canada‘‘£’’ or ‘‘Pounds Sterling’’ the lawful currency of the U.K.‘‘$’’, ‘‘U.S.$’’ ‘‘US$’’ or ‘‘Dollars’’ the lawful currency of the U.S.‘‘Chf’’ or ‘‘Swiss Franc’’‘‘RR’’ or ‘‘Russian Rouble’’the lawful currency of Switzerlandthe lawful currency of Russia303