List of serial killers in the United Kingdom
A serial killer is typically a person who murders three or more people, with the murders taking place over more than a month and including a significant period of time between them. The British Centre for Crime and Justice Studies defines a serial killer when an individual has killed three or more people who were previously unknown to him or her, with a ‘cooling off’ period between each murder. This definition is accepted by both police and academic experts and therefore provides a useful frame of reference.