Although I have not studied the matter, I cannot see any good reason for reading (e) (iii) as only applying to counsel for the co-accused, but one never knows whether there may be some authority to that effect. In any event it will be necessary for me to give the jury very explicit directions as to the fact that they should not take the previous convictions of either accused into account to assist them to reach any conclusion upon the basis of propensity or disposition. With the background of this trial and the evidence that is necessarily before the jury, I do not feel that any possible prejudice which might have flowed to the accused by the asking of the questions by Mr. Martin, would, in any event, lead me to discharge the jury. I propose to cure it - if there is any defect in Mr. Martin's cross-examination - as well as I can. In the circumstances of the case I think it is a very different situation from the case of a man who is on trial and the jury has absolutely no knowledge whether he has got any previous convictions or not. If evidence of previous convictions gets in under those circumstances, of course, it may be very, very damaging indeed, but in the present case I do not feel that damage is sufficient to warrant me, on the sixth day of this trial and at the close of all the evidence, to discharge the jury, so I refuse the application.
In the learned trial judge's charge to the jury he said:
The third thing I want to mention to you is that - by the very nature of this trial we know that both the accused men are convicted criminals. Now ordinarily if you came to sit as members of the jury or if you come and sit in this court and hear criminal trials, you may hear a man charged with some terrible offence, and the trial will go from the beginning to the end, and you will never know, nor will anyone, no member of the jury will know or be allowed to know whether that man has a long history of criminal offences behind him or whether he is a man who is charged with a criminal offence for the first time. It is only in particular circumstances when a man's background, his criminal history, can be brought into a trial. I will not worry you about what those circumstances are, but you can see for yourself if you have got a man charged with a crime and there is conflicting evidence, if a jury were to know that that man had previously been convicted of the same sort of crime, particularly over a number of years, it would be dreadfully difficult for the jury to forget that and to concentrate its attention on the evidence before it. Ordinarily speaking the problem is not whether the accused person committed some other crimes; your problem is not that, your problem is whether these men or either of them committed this crime. Now, in this case, because they are both convicts in Pentridge, of course, it would be quite impossible to conduct the trial without your knowing that they were convicted men. Therefore what I want to say to you is it would be very wrong of you to hold that against them in the sense when you are debating a point amongst yourselves to say this man has a record of X and Y, and therefore he has a propensity to do this sort of thing or a disposition to do it simply by reason of his previous convictions. You are here to judge what he did on the 12th of November; so, do the best you can not to allow the fact that both of these people are convicted criminals, both serving sentences at Pentridge, to intrude in any way into your logical analysis of the evidence in relation to what happened on this particular night.
The passage which I have quoted above was in the early stages of the charge and no further reference was made to prior convictions or the manner in which evidence with respect to them should be treated by the jury.