Balfour regional civils chief joins Costain

Costain has appointed Peter Mumford as managing director for its natural resources division.
Mumford will join Costain’s Executive Board and start on 2 January 2026.
He replaces Sam White who left in October to become managing director of Mitie’s Technical Services division.
Mumford joins from Balfour Beatty where he was managing director of its regional civils business in the UK.Prior to that he spent five years at National Highways leading the delivery of the government’s &po