John David Guise Cannan (born 20 February 1954) is a British murderer and rapist. A former car salesman, he was convicted in 1988 of murder and sexual offences. He was given three life sentences with a recommendation to never be released for the murder of Shirley Banks in Bristol in October 1987, the attempted kidnapping of Julia Holman on the previous night, and the rape of a woman in Reading the previous year. He targeted professional women. He is the only suspect in the murder of Suzy Lamplugh, who vanished in July 1986 after going to meet a man calling himself 'Mr Kipper', but the Crown Prosecution Service decided in 2002 that there was insufficient evidence to charge him.