Prospectus re Admission to the Official List - Heritage Oil

our understanding of petroleum legislation, taxation and other regulations that currently apply to theseinterests. However, RPS is not in a position to attest to the property title, financial interest relationships orencumbrances related to the properties. RPS can not opine on the agreements between Oman and Iranconcerning the development of the West Bukha Field. Our estimates of reserves and resources and valueare based on the data set available to, and provided by Heritage. We have accepted, without independentverification, the accuracy and completeness of these data.The report represents RPS’s best professional judgement and should not be considered a guarantee orprediction of results. It should be understood that any evaluation, particularly one involving explorationand future petroleum developments may be subject to significant variations over short periods of time asnew information becomes available. This report relates specifically and solely to the subject assets and isconditional upon various assumptions that are described herein. This report must, therefore, be read in itsentirety. This report was provided for the sole use of Heritage and its advisors on a fee basis. This reportmay be reproduced or redistributed to any other persons in its entirety. However in instances whereexcerpts only are to be reproduced or published, other than in relation to the initial public offering, thiscannot be done without the express permission of RPS.RPS has given and not withdrawn its written consent to the issue of this document with its name includedwithin it and with inclusion therein of its report and references thereto. RPS accepts responsibility for theinformation contained in the RPS report set out in this part of this document and to the best knowledgeand belief of RPS, having taken all reasonable care to ensure that such is the case, the informationcontained in such report is in accordance with the facts and does not omit anything likely to affect theimport of such information.Yours faithfully,RPS Energy27MAR200808225692EurIng Roy T. Kelly, CEng, FEITechnical Director68