Long-Term Incentive Plan

Costain Group PLC
27 April 2005

Costain Group PLC

(the 'Company')





Long-Term Incentive Plan

The Company announces details of awards in the form of options with an exercise
price of £1 per exercise (whether on exercise of the entire award or any part of
it) over 1,732,974 ordinary shares of 10p each made on 26 April 2005 under the
Costain Group PLC Long-Term Incentive Plan (LTIP). The awards can only be
exercised on the achievement of specified performance conditions after the end
of the Company's financial year ending 31 December 2008. Awards were made to the
following Executive Director:



Name                                           Number of Shares subject to Award

Charles J McCole, Finance Director                       382,978



Other awards were made on 26 April 2005 under the LTIP to employees who are not
Executive Directors of the Company





                                                                   27 April 2005



Enquiries:


College Hill             Tel: [phone]       [e-mail]

Mark Garraway


Costain Group PLC        Tel: [phone]         [e-mail]

Clive L Franks, Company Secretary




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