Admissibility of evidence of refractory witnesses

Where direct oral evidence of a fact would be admissible in any proceedings under this Act, a document containing a statement made by the complainant which forms part of the record compiled by the police and tending to establish that fact, shall be admissible in evidence in circumstances where– (a) the complainant refuses to be sworn as a witness; or (b) having been sworn as a witness, gives oral which is inconsistent or contradictory to the statement forming part of the police record, Provided that the statement contains a declaration by the maker and signed before a magistrate or a justice of the peace to the effect that it is true to the best of his knowledge and belief and that he made the statement knowing that if it were tendered in evidence he would be liable to prosecution if he wilfully stated in it anything which he knew to be false or did not believe to be true.