Charlie Mullins OBE is the archetypal entrepreneur ? having started his business from scratch and then building it into a multi-million pound enterprise. From humble beginnings growing up on an estate in South London, he left school with no qualifications, but after a four-year plumbing apprenticeship he started his own firm, Pimlico Plumbers, which now generates a turnover in excess of ?30m and boasts many well-known names among its many clients including Simon Cowell, Helen Mirren and Richard Branson. He has been a regular contributor on Real Business since 2011 and is particularly interested in promoting and encouraging apprenticeships.