"(1) ... a person convicted of an offence on indictment may appeal to the Court of Appeal against his conviction. (2) An appeal under this section lies only – (a) with the leave of the Court of Appeal ..."
"(1) For the purposes of an appeal, or an application for leave to appeal, under this Part of this Act the Court of Appeal may, if they think it necessary or expedient in the interests of justice – ... (c) receive any evidence which was not adduced in the proceedings from which the appeal lies. (2) The Court of Appeal shall, in considering whether to receive any evidence, have regard in particular to - (a) whether the evidence appears to the Court to be capable of belief; (b) whether it appears to the Court that the evidence may afford any ground for allowing the appeal; (c) whether the evidence would have been admissible in the proceedings from which the appeal lies on an issue which is the subject of the appeal; and (d) whether there is a reasonable explanation for the failure to adduce the evidence in those proceedings. ... "
"(1) This rule applies where - (a) a party wants the court to reopen a decision which determines an appeal or reference to which this Part applies (including a decision on an application for permission to appeal or refer); (b) the Registrar refers such a decision to the court for the court to consider reopening it. (2) Such a party must - (a) apply in writing for permission to reopen that decision, as soon as practicable after becoming aware of the grounds for doing so; and (b) serve the application on the Registrar. (3) The application must - (a) specify the decision which the applicant wants the court to reopen; and. (b) explain – (i) why it is necessary for the court to reopen that decision in order to avoid real injustice. (ii) how the circumstances are exceptional and make it appropriate to reopen the decision notwithstanding the rights and interests of other participants and the importance of finality, (iii) why there is no alternative effective remedy among any potentially available, and (iv) any delay in making the application. (4) The Registrar - (a) may invite a party's representations on – (i) an application to reopen a decision, or (ii) a decision that the Registrar has referred, or intends to refer, to the court; and (b) must do so if the court so directs. (5) A party invited to make representations must serve them on the Registrar within such period as the Registrar directs. (6) The court must not reopen a decision to which this rule applies unless each other party has had an opportunity to make representations."
"... section 28 presupposes the existence of a competent appeal or application and is concerned only with the procedure thereon."
"... it is well established that a desire to raise a new ground of appeal (or resurrect a previous ground of appeal) on the basis of new evidence that will require an application unders23 of the Criminal Appeal Act 1968 is not a ground for reopening an unsuccessful appeal. It is a desire to be pursued by approaching the CCRC pursuant to theCriminal Appeal Act 1995 ."
"... the jurisdiction is not rigorously confined to cases involving procedural errors but ... it is likely to be confined to exceptional circumstances when the lack of an alternative effective remedy (or some other reason) would or might otherwise lead to manifest injustice."