Treason and Lords of Justiciary and counterfeiting the Great Seal of Scotland remain treason under sections 11 and 12 of the Treason Act 1708 respectively. Treason is a reserved matter about which the Scottish Parliament is prohibited from legislating. Two acts of the former Parliament of Ireland passed in 1537 and 1542 create further treasons which apply in Northern Ireland. The penalty for treason was changed from death to a maximum of imprisonment for life in 1998 under the Crime And Disorder Act. Before 1998, the death penalty was mandatory, subject to the royal prerogative of mercy. Since the abolition of
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