23Evidence
(1)For purposes of this Part of this Act the Court of Appeal may, if they think it necessary or expedient in the interests of justice—
(a)order the production of any document, exhibit or other thing connected with the proceedings, the production of which appears to them necessary for the determination of the case;
(b)order any witness who would have been a compellable witness in the proceedings from which the appeal lies to attend for examination and be examined before the Court, whether or not he was called in those proceedings; and
(c)subject to subsection (3) below, receive the evidence, if tendered, of any witness.
(2)Without prejudice to subsection (1) above, where evidence is tendered to the Court of Appeal thereunder the Court shall, unless they are satisfied that the evidence, if received, would not afford any ground for allowing the appeal, exercise their power of receiving it if—
(a)it appears to them that the evidence is likely to be credible and would have been admissible in the proceedings from which the appeal lies on an issue which is the subject of the appeal; and
(b)they are satisfied that it was not adduced in those proceedings but there is a reasonable explanation for the failure to adduce it.
(3)Subsection (1)(c) above applies to any witness (including the appellant) who is competent but not compellable, and applies also to the appellant's husband or wife where the appellant makes an application for that purpose and the evidence of the husband or wife could not have been given in the proceedings from which the appeal lies except on such an application.
(4)For purposes of this Part of this Act, the Court of Appeal may, if they think it necessary or expedient in the interests of justice, order the examination of any witness whose attendance might be required under subsection (1)(b) above to be conducted, in manner provided by rules of court, before any judge or officer of the Court or other person appointed by the Court for the purpose, and allow the admission of any depositions so taken as evidence before the Court.