John Gittins has been promoted to regional managing director for the Northern Region, covering Scotland, Yorkshire and the North East, while Simon Butler is promoted to head the Central region, covering the Midlands and South Wales.
Both will report to Craig Tatton, managing director for UK Building.
Earlier this week the firm announced the appointment of Richard Boeg as MD for London and the South East, who had previously been head of operations at Balfour Beatty.
Tatton said: “I am delighted to announce the promotion of John and Simon.
“The new positions are recognition of their team’s hard work in delivering significant revenues and new business across their respective areas. ”