22 It can be seen that his Honour was appreciative of the need to direct the jury with respect to the possibility that they might reason towards the guilt of the accused in relation to one of the children on the basis of the propensity shown by the commission of an offence or offences against the other. Similarly, they were told that a finding of guilt on one count could not lead, via propensity reasoning, to the same finding on another. The following question then arises: in view of those instructions, can the jury be taken to have appreciated that the evidence of the accused's engagement in the uncharged acts had to be approached in the same way and the evidence used only for the legitimate purposes that justified its admission?
23 In our opinion, the answer must be - no. For practical purposes, the only issues in the trial related to the truthfulness and reliability of the two young people. As we have indicated, it can be seen to be a relatively short step from the applicant's possession of those objects to acceptance of the evidence that the girls had seen them and then that he compelled them to watch pornographic movies and used the vibrator in their presence. It would be a much shorter step, once that evidence was accepted, to the conclusions that he sexually abused each of them. The risk of the impermissible use of the evidence by the jury must in this situation be regarded as substantial, and it should have been the subject of specific instructions.
24 Accordingly, we consider that the contention advanced in this ground - that his Honour fell into error - has been substantiated. By reason of the strong possibility that the jury may well have been influenced in their reasoning to the applicant's guilt by the impermissible use of the propensity evidence, we consider that a miscarriage of justice may have occurred. In arriving at this conclusion, we have not overlooked the fact - emphasised by the Crown on this appeal - that no exception was taken by defence counsel to the failure to give the propensity warning.
Ground 1
25 Whilst it was conceded that the trial judge did give the jury what was described as a "modified Longman[6] warning", the argument was advanced that his instructions were deficient in two respects. First, it was said, the judge should have instructed the jury that it would be dangerous to convict on the basis of the unsupported evidence of the respective complainants. Secondly, he did not address the claimed forensic disadvantage created by the delay in prosecution and the lack of specificity as to the dates and occasions on which he was alleged to offend.
26 These complaints lack force. There is no requirement that a trial judge in the circumstances present in this matter instruct a jury that it would be dangerous to convict on the evidence of the respective complainants. His Honour's obligation was to provide appropriate instructions so that, in a situation where the prosecution had the onus of establishing guilt beyond reasonable doubt, the jury in their deliberations would be mindful of matters that could impact upon the reliability of the evidence led against the accused or which, through the effluxion of time, may have placed the accused in a position of forensic disadvantage.
27 His Honour was astute to emphasize the need for the jury to scrutinize the evidence of the two complainants with great care. He addressed this topic on a number of occasions, drawing attention (inter alia) to their ages when the offences were alleged to have been committed and the time that had passed until the trial, as well as their different levels of maturity at that stage. He pointed out the lack of supporting evidence for the claimed incidents and the possibility of collusion between the two girls and several times reminded the jury of the burden and standard of proof in a criminal trial. His instructions were adequate and no complaint was made by counsel appearing for the applicant at the trial concerning them. Specifically, no forensic disadvantage to which the trial judge did not directly advert was identified or was made the subject of any exception. None, we should add, was drawn to the attention of this Court.
28 This ground must fail.
Ground 3
29 As noted earlier, ground 3 was the "unreasonableness" ground. That is, it was to be contended that the guilty verdicts should be set aside on the ground that they were unreasonable or could not be supported having regard to the evidence. Had that ground been pressed, we would have had to decide whether -