Brian May, chief executive since 2005, turns 65 in May. His successor Paul Scott is 51 and joined the board in July 2014 as director of engineering services.
Mr Scott has been with Renew for 15 years and before his current position was managing director of the nuclear subsidiary Shepley Engineers.
Joining the board is Andries Liebenberg, 48, who is managing director of Renew’s largest business, Amco Rail. He has been with Amco for eight years and managing director since January 2013.
The company also issued a trading update, saying that the board anticipates reporting an increased forward order book and a reduction in net debt when it announces interim results for the six months ended 31st March 2016 in a few weeks’ time.