Murder (Abolition of Death Penalty) Act 1965 all sentences of death were to be commuted to sentences of life imprisonment. The legislation contained a sunset clause, which stated that the Act would expire on 31 July 1970 "unless Parliament by affirmative resolutions of both Houses otherwise determines". This was done in 1969 and the Act was made permanent. The Act left four capital offences: high treason, "piracy with violence" (piracy with intent to kill or cause grievous bodily harm), arson in royal dockyards and espionage, as well as other capital offences under military law. The death penalty was not finally abolished in the United Kingdom until 1998
Treason Act 1351 guilty of high treason under the Act if they: The penalty for counterfeiting coins was the same as for petty treason. The offence had previously been "called" petty treason, before the Act elevated it to high treason. Under the Act petty treason was the murder of one's lawful superior: that is if a servant killed his master or his master's wife, a wife killed her husband or a clergyman killed his prelate. This offence was abolished in 1828. The Act originally envisaged that further forms of treason would arise that would not be covered by the Act, so it legislated