Criminal Practice Rules 1999

If a party to an appeal or subsequent appeal wants to adduce evidence at the hearing of the appeal or subsequent appeal, the party must apply to the court for leave to adduce evidence.

Unless the court directs otherwise, an application for leave to adduce evidence must be made in writing and accompanied by an affidavit of the witness giving or producing the evidence.

The affidavit must state the following—

for evidence that is to be given by the witness—what the evidence is;

for evidence that is to be produced by the witness—the nature of the evidence.