R v CBM

In the case of R v CBM, the appellant was convicted of multiple sexual offences against two separate complainants. The offences were joined and tried together on a single indictment. The primary issue before the court was whether the trial judge should have directed the jury against using evidence of the appellant’s offending against one complainant as proof of guilt in relation to the other complainant. The court was required to determine if this non-direction amounted to a miscarriage of justice.

The court considered whether the omission to direct the jury against propensity reasoning and to warn of the dangers associated with such reasoning constituted a significant error. It was noted that the trial judge did not explicitly direct the jury that they could not use the evidence in this manner, nor did the judge direct them that they could. The court examined the potential impact of this omission on the jury's deliberations and whether it could have influenced the verdict. The court concluded that the non-direction was a significant error, as it did not sufficiently guide the jury on how to properly assess the evidence, potentially leading to an unfair bias against the appellant.

Based on the analysis, the court found that the appellant's rights to a fair trial were compromised by the trial judge’s failure to appropriately direct the jury on the use of similar fact evidence. This misdirection was deemed to have caused a miscarriage of justice. Consequently, the appeal was allowed, the convictions set aside, and a re-trial ordered to ensure the appellant received a fair trial free from the influence of improper evidence usage.