http://www.legislation.gov.uk/id/ukpga/Eliz2/5-6/11

http://www.legislation.gov.uk/ukpga/Eliz2/5-6/11/part/II

Homicide Act 1957

An Act to make for England and Wales (and for courts-martial wherever sitting) amendments of the law relating to homicide and the trial and punishment of murder, and for Scotland amendments of the law relating to the trial and punishment of murder and attempts to murder.