3.—(1) Any person lawfully sworn as a witness or as an interpreter in a judicial proceeding who wilfully makes a statement material in that proceeding, which he knows to be false, or does not believe to be true, shall be guilty of perjury, and shall, on conviction on indictment, be liable to imprisonment for a term not exceeding seven years, or to a fine, or to both.
(2) The expression “judicial proceeding” includes a proceeding before any court, tribunal, or person having by law power to hear, receive, and examine evidence on oath.
(3) Where a statement made for the purposes of a judicial proceeding is not made before the tribunal itself, but is made on oath before a person authorised by law to administer an oath to the person who makes the statement, and to record or authenticate the statement, it shall, for the purposes of this Article, be treated as having been made in a judicial proceeding.
(4) A statement made by a person lawfully sworn in Northern Ireland for the purposes of a judicial proceeding—
(a)in another part of Her Majesty's dominions; or
(b)in a British tribunal lawfully constituted in any place by sea or land outside Her Majesty's dominions; or
(c)in a tribunal of any foreign state;
shall, for the purposes of this Article, be treated as a statement made in a judicial proceeding in Northern Ireland.
(5) The question whether a statement on which perjury is assigned was material is a question of law to be determined by the court at the trial.