s 56 Reception of unsworn evidence.
(1) Subsections (2) and (3) apply to a person (of any age) who— (a) is competent to give evidence in criminal proceedings, but (b) (by virtue of section 55(2)) is not permitted to be sworn for the purpose of giving evidence on oath in such proceedings. (2) The evidence in criminal proceedings of a person to whom this subsection applies shall be given unsworn. (3) A deposition of unsworn evidence given by a person to whom this subsection applies may be taken for the purposes of criminal proceedings as if that evidence had been given on oath. (4) A court in criminal proceedings shall accordingly receive in evidence any evidence given unsworn in pursuance of subsection (2) or (3). (5) Where a person (“ the witness ”) who is competent to give evidence in criminal proceedings gives evidence in such proceedings unsworn, no conviction, verdict or finding in those proceedings shall be taken to be unsafe for the purposes of any of sections 2(1), 13(1) and 16(1) of the Criminal Appeal Act 1968 (grounds for allowing appeals) by reason only that it appears to the Court of Appeal that the witness was a person falling within section 55(2) (and should accordingly have given his evidence on oath).