The judgment in Reg. v. Cook shows, I consider, that it was necessary for his Honour, if he came to exercise the statutory discretion in the present case, to take into account, inter alia, the following considerations: (a) That the legislation is not intended to make the introduction of a prisoner's previous convictions other than exceptional. (b) That the prejudicial effect on the defence of questions relating to the accused's long criminal record needed to be weighed against such damage as his Honour might think had been done to the Crown case by the imputations. (c) That, on the issue of credibility, it might be unfair to the Crown to leave the Crown witnesses under an imputation while preventing the Crown from bringing out the accused's record. (d) That the actual prejudicial effect of the cross-examination, if allowed, might far exceed its legitimate evidentiary effect upon credit. (e) That great efforts had been made by the defence to make it clear that memory only and not honesty was the subject of attack. (f) That counsel for the defence had not been warned, but had been refused advice when he sought it from his Honour.
While items (e) and (f) had particular relevance to the circumstances of the case then under consideration, items (a) to (d) provide a valuable guide which is likely to be relevant in most cases. But the passage does not suggest that his Honour was laying down rules which were to govern the exercise of the discretion in every case. Nor does the first-mentioned consideration support the submission for the applicant that the discretion is only to be exercised against an accused person in exceptional circumstances. Item (a) refers to the legislative context. His Honour begins with that context in order to make the fundamental point, which is plainly right, that ordinarily a criminal trial is to proceed without the disclosure to the jury of prejudicial material which is unrelated to the facts of the case. In order to make that point, the statute declares that a person charged and called as a witness shall not be asked, and if asked shall not be required to answer, any question tending to show that he has committed or been convicted of or been charged with any offence other than that wherewith he is then charged, or is of bad character, unless one or other of the stipulated conditions is established, whereupon an exception may be permitted in the discretion of the trial judge to the fundamental exclusionary rule adumbrated at the beginning of the sub-section. Earlier in his judgment his Honour made the same point even more clearly when he said [32] :
As was pointed out in Reg. v. Cook [33] , the provision was intended to be a protection to an accused person [34] , and its terms show that the introduction of his previous convictions was not meant to be other than exceptional [35] . (Our emphasis.)
Strong support for the approach of Smith J. in this case is to be found in the decision of this Court in Matusevich in the judgment of Aickin J. [36] (with whom Gibbs, Stephen and Mason JJ. agreed in this respect). Brown and Matusevich rightly emphasize that, although the nature or conduct of the defence is such as to attract the discretion, the primary exclusionary rule remains of importance in determining the manner of its exercise. Although these cases show that there is no prima facie rule that "in the ordinary and normal case" (to use the phrase of Singleton J.) the discretion should be exercised in favour of the Crown, they do not support the submission that the discretion should be exercised against the Crown unless the circumstances can be described as exceptional. The discretion is at large but the primary exclusionary rule is a factor always relevant to its exercise.
1. (1944) 69 C.L.R., at p. 578.
2. (1944) 69 C.L.R., at p. 580.
3. (1944) 69 C.L.R., at p. 587.
4. [1960] V.R. 382.
5. [1960] V.R., at p. 398.
6. [1960] V.R., at p. 394.
7. [1959] 2 Q.B. 340.
8. [1959] 2 Q.B., at p. 100.
9. [1959] 2 Q.B., at p. 99.
10. (1977) 137 C.L.R., at p. 658.