Application for Admission of Over-Allotment Shares

HORIZON

March 8th, 2010 For Immediate Release

Horizon Acquisition Company plc ("Horizon")

(Ticker symbol: HZN)

NOT FOR RELEASE, PUBLICATION OR DISTRIBUTION, DIRECTLY OR INDIRECTLY, IN OR INTO THE UNITED STATES, CANADA, AUSTRALIA OR JAPAN.

Application for Admission of Over-Allotment Shares

Horizon announces that on 5 March 2010 it allotted 509,700 ordinary shares (the "Over-Allotment Shares") in accordance with the terms of the over-allotment option exercised by Credit Suisse Securities (Europe) Limited, acting as stabilising manager in connection with the placing of Horizon's ordinary shares, on 10 February 2010.

Application has been made for the Over-Allotment Shares to be admitted to secondary listing on the Official List and to trading on the main market of the London Stock Exchange. Dealings in the Over-Allotment Shares are expected to commence on 9 March 2010.

Following admission of the Over-Allotment Shares, there will be 40,514,700 ordinary shares in issue.

Enquiries:

Citigate Dewe Rogerson +44 (0)20 7638 9571

Anthony Carlisle

IMPORTANT NOTICE: This announcement does not contain or constitute an offer of, or the solicitation of an offer to buy or subscribe for, securities to any person in Australia, Japan, Canada, or the United States or in any jurisdiction to whom or in which such offer or solicitation is unlawful. The securities referred to herein may not be offered, sold, transferred or delivered, directly or indirectly, in or into the United States absent registration under the U.S. Securities Act of 1933, as amended (the "Securities Act") or another exemption from, or in a transaction not subject to, the registration requirements of the Securities Act. Subject to certain exceptions, the securities referred to herein may not be offered or sold in Australia, Canada or Japan or to, or for the account or benefit of, any national, resident or citizen of Australia, Canada or Japan. The offer and sale of the securities referred to herein has not been and will not be registered under the Securities Act, under the securities legislation of any state or territory or jurisdiction of the United States or under the applicable securities laws of Australia, Canada or Japan. There will be no public offer of the securities in the United States.