PART VIII
EVIDENCE, AMENDMENT, JUDGMENTS, ETC.
43. Crime or interest does not incapacitate a witness
No person offered as a witness shall, by reason of any alleged Crime or interest incapacity from crime or interest, be excluded from giving evidence on the trial of any criminal case, or in any proceeding relating, or incidental, to such case.
44.Persons so offered as witnesses are compellable to give evidence.
Every person, so offered as a witness, shall be admitted and be compellable to give evidence on oath, or solemn affirmation where an affirmation is receivable, notwithstanding that such person has, or may have, an interest in the matter in question, or in the event of the trial in which he is offered as a witness, or of any proceeding relating, or incidental, to such case, and notwithstanding that such person, so offered as a witness, has been previously convicted of a crime or offence.
Admissibility of evidence - national proceedings
Procedure for witness testimony - national proceedings
EDIT.