Currie & Brown suffered a further high profile departure this month when chairman Angus McLean stepped down from his role

McLean is understood to have gone two weeks ago today. His sudden departure, broken on the QS News website, follows a string of bosses leaving the firm in the last year.

A statement from the firm said that chief executive Euan McEwan, who joined the firm last year, has assumed full control of the business and will lead Currie & Brown through to the next stage of its development. The statement added: "A new chairman will be appointed. In the meantime, Erik Ostman is acting as non-executive chairman."

It is understood the firm could also be facing further senior exits, despite some sources close to the firm claiming that McEwan's departure could stem the revolving door at the firm.

McLean, a consulting engineer by profession, joined the business in 2001. He took over from Doug Leedham, who left the firm in the summer of 2000.

n Currie & Brown is one of four companies that are on a new framework announced by the BBC to price and manage its future construction work. Currie & Brown and Cyril Sweett are the QSs on the framework, while Capita Symonds and Dearle & Henderson have made it to the list for project managers and planning supervisors.