Dr Jonathan Oates is the Ealing Borough Archivist and Local History Librarian, and he has written and lectured on aspects of the history of London, including its criminal past. His books include Foul Deeds and Suspicious Deaths in Ealing, Foul Deeds and Suspicious Deaths in Lewisham and Deptford, Unsolved Murders in Victorian and Edwardian London, Unsolved London Murders: The 1920s and 1930s, Unsolved London Murders: The 1940s and 1950s and Attack on London. He is also an authority on the Jacobite rebellions of 1714 and 1745 and recently published "Sweet William or The Butcher? The Duke of Cumberland and the '45".