Achurch v The Queen

Achurch appealed his conviction for murder in the Supreme Court of New South Wales. The central issue on appeal concerned the admissibility of evidence obtained from a covert recording of a conversation between Achurch and a prison informant. The High Court of Australia was required to determine whether the admission of this evidence, which was obtained in circumstances where Achurch was unaware he was being recorded, was an error that rendered his trial unfair.

The High Court considered whether the admission of the covert recording constituted a miscarriage of justice. This involved an assessment of whether the evidence was improperly obtained and, if so, whether its prejudicial effect outweighed its probative value. The Court also had to consider the application of the exclusionary rule, which generally requires the exclusion of improperly obtained evidence, and the exceptions to that rule.

The High Court held that the recording was improperly obtained because it was made without Achurch's consent and in circumstances where he had a reasonable expectation of privacy. However, the Court found that the admission of the recording did not occasion a miscarriage of justice. This was because the recording was highly probative of Achurch's guilt, and the jury was given clear and strong warnings about the potential unreliability of evidence obtained from informants. The Court emphasised that the admission of improperly obtained evidence does not automatically lead to a miscarriage of justice, and that the overall fairness of the trial must be considered.

The appeal was dismissed.