APR.L Regulatory News (APR)

TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARESi

1. Identity of the issuer or the underlying issuer of existing shares to which voting rights are attached: ii

Horizon Acquitition Co. plc

2 Reason for the notification (please tick the appropriate box or boxes):

An acquisition or disposal of voting rights

An acquisition or disposal of qualifying financial instruments which may result in the acquisition of shares already issued to which voting rights are attached

An acquisition or disposal of instruments with similar economic effect to qualifying financial instruments

An event changing the breakdown of voting rights

Other (please specify):

x

3. Full name of person(s) subject to the notification obligation: iii

BT Pension Scheme Trustees Limited as trustee of the BT Pension Scheme. See Section 9 for further information.

4. Full name of shareholder(s)  (if different from 3.):iv

N/A

5. Date of the transaction and date on which the threshold is crossed or reached: v

02 September 2010

6. Date on which issuer notified:

03 September 2010

7. Threshold(s) that is/are crossed or reached: vi, vii

From 4% to 5%

8. Notified details:

A: Voting rights attached to shares viii, ix

Class/type of shares

if possible using the ISIN CODE

Situation previous to the triggering transaction

Resulting situation after the triggering transaction

Number of Shares

Number of Voting Rights

Number of shares

Number of voting rights

% of voting rights x

Direct

Direct xi

Indirect xii

Direct

Indirect

GB00B58D4C52

B58D4C5

2,023,757

2,023,757

N/A

N/A

2,062,137

N/A

5.09%

B: Qualifying Financial Instruments

Resulting situation after the triggering transaction

Type of financial instrument

Expiration date xiii

Exercise/ Conversion Period xiv

Number of voting rights that may be acquired if the instrument is exercised/ converted.

% of voting rights

C: Financial Instruments with similar economic effect to Qualifying Financial Instruments xv, xvi

Resulting situation after the triggering transaction

Type of financial instrument

Exercise price

Expiration date xvii

Exercise/ Conversion period xviii

Number of voting rights instrument refers to

% of voting rights xix, xx

Nominal

Delta

Total (A+B+C)

Number of voting rights

Percentage of voting rights

2,062,137

5.09%

9. Chain of controlled undertakings through which the voting rights and/or the financial instruments are effectively held, if applicable: xxi

BT Pension Scheme Trustees Limited, as trustee of the BT Pension Scheme ("BTPS") is the parent undertaking of Britel Fund Nominees Limited and Britel Fund Trustees Limited, which is the parent undertaking of Hermes Fund Managers Limited ("HFML"). HFML is the parent undertaking of:

1. Hermes Equity Ownership Services Limited ("HEOS") (voting rights: 5.09%)*

* This notification is also being made in respect of HEOS, which is an indirect holder of shares for the purpose of DTR 5.2.1(h). The voting rights include the following: (i) all of the voting rights of the underlying clients of HEOS for whom it provides voting services; (ii) all of the voting rights attaching to the direct shareholding of BTPS; (iii) all of the voting rights attaching to shares managed by HIML; and (iv) the voting rights attaching to the direct shareholding of BTPS that are managed by HSL.

Please see Section 13 for further information.

Proxy Voting:

10. Name of the proxy holder:

See Comment in Section 13.

11. Number of voting rights proxy holder will cease to hold:

See Comment in Section 13.

12. Date on which proxy holder will cease to hold voting rights:

See Comment in Section 13.

13. Additional information:

[HEOS hold the voting rights under a standing proxy contained in agreements for the provision of voting services to various underying clients for the purposes of DTR 5.2.1(h), which includes all of the shares owned directly by BTPS, all of the voting rights attaching to shares managed by HIML and the voting rights attaching to the direct shareholding of BTPS that are managed by HSL.]

All voting rights held on behalf of the above entities are aggregated for the purposes of DTR 5.2.1(e).

This disclosure is made by BT Pension Scheme Trustees Limited as trustee of the BT Pension Scheme, which is the ultimate parent undertaking for the purposes of DTR 5.2.1(e).

14. Contact name:

Fowzia Hussain (f.hussain@hermes.co.uk)

15. Contact telephone number:

020 7680 8017