Bronson v The Queen- Pollock v The Queen

Bronson v The Queen and Pollock v The Queen were appeals heard together in the High Court of Australia concerning the admissibility of evidence obtained by police. The central dispute revolved around whether evidence, specifically confessions, obtained from the appellants after they had been unlawfully detained should have been excluded from their trials.

The High Court was required to determine whether the trial judges erred in admitting the confessions, despite the unlawful nature of the appellants' detention. This involved considering the principles governing the admissibility of evidence obtained in breach of a person's legal rights, particularly in circumstances where the breach was significant and the evidence obtained was highly prejudicial. The court had to balance the need to admit relevant evidence with the imperative to uphold the rule of law and protect individual liberties.

The Court held that the admission of the confessions in both cases constituted a miscarriage of justice. Brennan, Dawson, and Toohey JJ applied the principle that evidence obtained in contravention of the law, particularly where the contravention is deliberate or reckless, should generally be excluded unless there are strong reasons to the contrary. They reasoned that the unlawful detention was not a mere technicality but a serious breach of the appellants' rights, and the confessions were a direct product of this illegality. The Court emphasised that the probative value of the evidence did not outweigh the impropriety of its acquisition, and that admitting such evidence would undermine public confidence in the administration of justice. Consequently, the appeals were allowed, and the convictions were quashed.