Construction group also appoint David Allvey and Mohd Hussein Hamid as joint deputy chairmen

Costain has appointed Mike Alexander to the board as an independent non-executive director.

The construction and civil engineering group also announced that David Allvey and Mohd Hussein Hamid have been appointed joint deputy chairmen.

Costain said Alexander would take up his position immediately

Costain chairman David Jefferies said: “His wealth of experience and knowledge of the energy sector will be a major benefit to the group and we look forward to working with him.”

Alexander was chief executive of British Energy between 2003 and 2005 and prior to that chief operating officer of Centrica, having held a number of senior positions within British Gas.