David trained as both a cartographer and a teacher. He was the owner and managing director of the largest Pizza Express franchisee organisation – the G&F Group – from 1973 to 1993. The flotation of Pizza Express PLC took place in 1993. David was chief executive of Pizza Express and then chairman until it was acquired by a private equity house in 2002. Following the sale of Pizza Express in 2003, David founded and was chairman of The Clapham House Group PLC from 2003 to 2010, the owner of Gourmet Burger Kitchen and Bombay Bicycle Club. In his spare time he grows grapes, figs and peaches in the South of France.