Guy retired from HSBC in 2003, having worked in London, New York and Tokyo. He has held various positions in International Banking including Global Head of Foreign Exchange at Chemical Bank, and Head of Global Markets at HSBC. More recently Guy has held the position of Chairman of Ptarmigan Bloodstock 2005 Ltd and Ptarmigan Bloodstock 2007 Ltd. Guy currently advises a number of financial institutions and charities. He also has his own private Stud Farm, and is a successful breeder.