SEA - 6th April 2010

BLOCKLISTING SIX MONTHLY RETURN

1. Name of company

Carillion plc

2. Name of schemes

(a) Sharesave Scheme b)Executive Share Option Scheme c) Long Term Incentive Plan and (d) Deferred Bonus Plan

3. Period of return:

1 October 2009 to 31 March 2010

4. Balance under scheme from previous return:

1,835,098 ordinary shares of 50p each

5. The amount by which the block scheme has been increased, if the scheme has been increased since the date of the last return:

2,000,000

6. Number of shares issued/allotted under schemes during period:

2,310,106

7. Balance under scheme not yet issued/allotted at end of period:

1,524,992

8. Number and class of shares originally listed and the date of admission:

12 January 2000 - 2,000,000 ordinary shares of 50p each

12 January 2000 - 500,000 ordinary shares of 50p each

19 December 2002 - 1,801,801 ordinary shares of 50p each

2 April 2008 - 2,000,000 ordinary shares of 50p each

18 September 2009 - 2,000,000 ordinary shares of 50p each

1 March 2010 - 2,000,000 ordinary shares of 50p each

9. Total number of shares in issue at the end of the period:

399,641,437

Tim George

Deputy Company Secretary

Carillion plc

Tel: 01902 422431

6 April 2010

Notes to editors

Carillion is one of the UK’s leading support services, Public Private Partnership project and construction companies. The Group has annual revenue of around £5 billion, employs some 50,000 people and operates across the UK, in the Middle East, Canada and the Caribbean.

In the UK, Carillion’s principal market sectors are Defence, Education, Health, Facilities Management & Services, Rail, Roads, Building, Civil Engineering and Utilities Services.

In the Middle East, Carillion’s principal market sectors are Construction and Facilities Management. In Canada and the Caribbean, the Group’s main sectors are Health, Roads Maintenance and Construction.

Carillion has a substantial portfolio of equity investments in Public Private Partnership projects, particularly in the Defence, Education, Health and Transport sectors.

In the inaugural Sunday Times Best Green Companies Awards in May 2008, Carillion secured first place in the category for large and medium-sized companies with high environmental impact and second place overall.

This and other Carillion news releases can be found at www.carillionplc.com

For further information contact

Carillion plc

John Denning, Director Group Corporate Affairs 01902 316426

Finsbury

James Murgatroyd +44 (0) 20 7251 3801

Gordon Simpson