23. Appeals by Director etc., in certain criminal proceedings.
(1) Where on or after the commencement of this section, a person is tried on indictment and acquitted of an offence, the Director, if he or she is the prosecuting authority in the trial, or the Attorney General as may be appropriate, may, subject to subsection (3) and section 24, appeal the acquittal in respect of the offence concerned on a question of law to -
(I) the Court of Appeal, or
(II) in the case of a person who is tried on indictment in the Central Criminal Court, the Court of Appeal or the Supreme Court under Article 34.5.4° of the Constitution.
(2) Where a person's conviction of an offence on indictment is quashed on appeal by the Court of Appeal and the Court makes no order for the re-trial of the person in respect of the offence, the Director, if he or she is the prosecuting authority in the trial, or the Attorney General, as may be appropriate, may, subject to subsection (3) and section 24, appeal the decision of the Court of Appeal not to order a re-trial of the offence concerned on a question of law to the Supreme Court under Article 34.5.3° of the Constitution.
(3) An appeal referred to in this section shall lie only where -
(a) a ruling was made by a court -
(i) during the course of a trial referred to in subsection (1),