William became head of the property business at Schroders in 1991 and, under his management, real estate assets grew from just under £200 million to more than £10 billion. He stepped down from this role in November 2013 to set up his own consultancy. He is currently non-executive chairman of Ediston Property Investment Company plc, The Chartered Surveyors Training Trust and a board member of Old Oak Park Royal Development Corporation where he also chairs its planning committee. He is a member of the Guys’ and St Thomas’ and the Goldsmith livery company’s investment committees