Duncan has been dealing with private clients as a qualified stockbroker for more than 30 years. He is a Fellow of the Chartered Institute for Securities & Investment and his career started in Leeds with Broadbridge. He then moved to Cawood Smithie & Co where he became a partner. Following the sale of Cawood Smithie to Brown Shipley, Duncan decided he wished to return to an independent firm in which he could focus more clearly on his clients and their long-term objectives. Williams Investment Management LLP was founded in May 2004.