I'm not disputing that Sutcliffe was an evil bastard and almost certainly killed more people but are you not getting mixed up with Robert Black here? To my knowledge, Sutcliffe's job was confined to relatively local areas, whereas Black's deliveries took him all over the country and beyond. Sutcliffe's known victims weren't from or found any further afield than Manchester. Black's were from Scotland, Yorkshire and Northern Ireland. He's also the prime suspect in the disappearance of Genette Tate who went missing in Devon. Plus he's suspected of committing murders in Ireland, Germany, France, and Holland - all near places where he delivered to.