Paul Bentley, who grew up in wartime London had enjoyed some success in the advertising industry as a copywriter. But he had always loved maps, landscapes and walking, and in the 1970s he left the office behind to set up in business with his wife, Mary dealing in antiquarian books and maps. He became a recognised specialist in the field and his research is credited in both James Howgego’s Printed Maps of London 1553-1850 and Ralph Hyde’s Printed Maps of Victorian London 1851-1900.