A person holding a commission from the Crown to exercise certain judicial functions for a particular commission area. JPs are appointed on behalf of and in the name of the Queen by the Lord Chancellor and may be removed from office in the same way. On reaching the age of 70 they are placed on a supplemental list and cease to be able to exercise any judicial functions. Their principal function is to sit as magistrates in the magistrates' courts but they may also sit in the Crown Court when it is considering committals for sentence and appeals from magistrates' courts, sign warrants of arrest and search warrants, and take statutory declarations. All High Court judges are ex officio justices of the peace for the whole of England and Wales.
Subjects: History — Law.