EXERCISE OF OVER-ALLOTMENT OPTION

HORIZON

February 10, 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.

HORIZON ACQUISITION COMPANY PLC ANNOUNCES

EXERCISE OF OVER-ALLOTMENT OPTION

Horizon announces that Credit Suisse Securities (Europe) Limited, acting as stabilising manager in connection with the placing of Horizon's ordinary shares (the "Placing"), has today exercised the over-allotment option in respect of 509,700 ordinary shares (the "Over-allotment Shares").

Including the Over-allotment Shares, a total of 40,509,700 ordinary shares have been placed with investors pursuant to the Placing.

Settlement of the Over-allotment Shares will take place not later than 5 March 2010.

Enquiries:

Citigate Dewe Rogerson +44 (0)20 7638 9571

Anthony Carlisle

Credit Suisse +44 (0)20 7888 8888

George Maddison, Indranil Bhattacharyya, Will MacLaren

Numis +44 (0)20 7260 1000

Oliver Hemsley, Alex Ham

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.

The contents of this announcement, which have been prepared by and are the sole responsibility of the Company, have been approved solely for the purposes of section 21(2)(b) of the Financial Services and Markets Act 2000 by Credit Suisse Securities (Europe) Limited of One Cabot Square London E14 4QJ who are acting exclusively for the Company and no one else in connection with the Placing. Credit Suisse and Numis, who are authorised and regulated in the UK by the Financial Services Authority, are acting for Horizon and no one else in connection with the Placing and will not regard any other person (whether or not a recipient of this Announcement) as a client in relation to the Placing and will not be responsible to anyone other than Horizon for providing the protections afforded to their respective clients or for providing advice in relation to the Placing or any matters referred to in this Announcement.