10 None of the matters relied on by the applicant comes near to making good that contention. In any case, as the sentencing judge pointed out to defence counsel on the plea, the jury's assessment of the applicant's belief must necessarily have been based in part on their own observation of the complainants, whose videotaped statements to police about the offences, made soon after they occurred, were before the jury. At the request of counsel for the applicant, we have viewed those videotapes. They reveal significant differences between the complainants in appearance, confidence and apparent maturity. This is not surprising, since KV was almost a year older than SL. It was well open to the jury, in our view, to reject the applicant's contention that there were reasonable grounds for his belief that SL was 16 or over.