s 57 Appeal not to operate as stay of execution
(1) Except in the cases mentioned in subsection (3) and section 56A, no appeal shall operate as a stay of execution, but the High Court or the Court of Appeal may stay execution on any judgment, order, conviction or sentence pending appeal on such terms as to security for the payment of any money or the performance or nonperformance of any act or the suffering of any punishment ordered by or in the judgment, order, conviction or sentence as to the Court may seem reasonable. (2) If the appellant is ultimately sentenced to imprisonment, the time during which the execution of the sentence was stayed shall be excluded in computing the term of his sentence unless the Court of Appeal otherwise orders. (3) In the case of a conviction involving sentence of death or corporal punishment— (a) the sentence shall not in any case be executed until after the expiration of the time within which notice of appeal may be given under section 51, or any extension of time which may be permitted under section 56; and (b) if notice is so given the sentence shall not be executed until after the determination of the appeal.