Board Changes (2)

20 November 2013

Mr Samer Younis, a Non-Executive Director of Costain and the nominee of Mohammed Abdulmohsin Al-Kharafi & Sons Co. W.L.L. ("Kharafi"), has notified the Board of his resignation as a Director of the Company with effect from 30 November 2013.

Mr Ahmed Aly Samy, a nominee of Kharafi, has been appointed to the Board as a Non-Executive Director with effect from 30 November 2013. Mr Samy, the Deputy Director General of Investment Affairs at Kharafi, will also be a member of Costain’s Nomination Committee.

No information is required to be disclosed under LR 9.6.13 R(1)-(6).

David Allvey, Chairman, commented:

"Samer has made a significant contribution to Costain since joining the Board in 2009 and we wish him well for the future. We are pleased to welcome Ahmed as his replacement and the wealth of experience he will bring to the Board."