The appellants, U.K. and R.P., appealed their convictions for sexual assault, arguing the trial judge erred in jury instructions regarding fabrication as post-offence conduct and the application of the W.(D.) principles.
The Court of Appeal found that the trial judge erred by instructing the jury on fabrication of trial evidence without independent evidence, and by providing a deficient fabrication instruction that failed to distinguish between disbelieved and fabricated evidence, explain independent evidence, or require consideration of alternative explanations.
Furthermore, the trial judge erred in the W.(D.) instruction by conflating the appellants' evidence and treating defence evidence as an all-or-nothing proposition.
These errors were deemed prejudicial, going to the heart of credibility assessment and the burden of proof.
The court declined to apply the curative proviso.