(1) This division applies to a criminal proceeding that is a trial on indictment of an accused person in which—
(a) the Supreme Court has jurisdiction; and
(b) neither of the following events in the trial has happened:
(i) if the tribunal of fact for the trial is a jury—the jury is empanelled;
(ii) if the tribunal of fact for the trial is a judge alone—the trial judge starts hearing evidence to determine the guilt or innocence of the accused.
(2) In this section:
"criminal proceeding"—a reference to a criminal proceeding includes a criminal proceeding begun before the day on which this section commences.
"trial"—a reference to a trial includes a retrial.