Tony Douglas will replace O'Rourke's seat on the board of Olympic delivery partner

Ray O’Rourke, chairman and chief executive officer of the Laing O’Rourke Group, is standing down as CLM chairman with immediate effect.

He will be replaced on the consortium’s board by Tony Douglas, Laing O’Rourke chief operating officer, who joined the company from Heathrow Airport in the summer.

CLM, which comprises CH2M HILL, Laing O’Rourke and Mace, is working with the Olympic Delivery Authority to project manage construction of venues and infrastructure for the 2012 games.

A CLM spokesperson said O’Rourke wanted to concentrate on international growth for his business.

Lee McIntire, president and chief operating officer of CH2M HILL, said: “Ray has provided excellent leadership and experience to CLM in the early stages of this historic programme. We know Tony will bring the same high standards as we all work to deliver our work for the UK.”