Harold Shipman is arguably Britain's most infamous serial killer. He certainly was the most prolific with 236 proven murders and a possible total of 450 victims. Shipman was a doctor who killed his own often elderly patients by means of a lethal dose of diamorphine (a powerful painkiller).
Other famous British serial killers include Jack the Ripper, Mary Ann Cotton and Fred West.
Other famous British serial killers include Jack the Ripper, Mary Ann Cotton and Fred West.