—(1) Where in any criminal proceeding evidence is given that the accused on being charged with an offence, or informed by a police officer or any other person charged with the duty of investigating offences that he may be prosecuted for an offence, failed to mention any fact which he subsequently relies on in his defence, being a fact which in the circumstances existing at the time he could reasonably have been expected to mention when so questioned, charged or informed, as the case may be, the court may in determining —
whether to commit the accused for trial;
whether there is a case to answer; and
whether the accused is guilty of the offence charged,
draw such inferences from the failure as appear proper; and the failure may, on the basis of those inferences, be treated as, or as capable of amounting to, corroboration of any evidence given against the accused in relation to which the failure is material.
(2) Subsection (1) does not —
prejudice the admissibility in criminal proceedings of evidence of the silence or other reaction of the accused in the face of anything said in his presence relating to the conduct for which he is charged, in so far as evidence of this would be admissible apart from that subsection; or
preclude the drawing of any inference from any such silence or other reaction of the accused which could be drawn apart from that subsection.