Moore-McQuillan v SA Police

In *Moore-McQuillan v SA Police*, the High Court of Australia considered a dispute between the appellant, Ms Moore-McQuillan, and the respondent, the South Australian Police. The core of the disagreement concerned the admissibility of evidence obtained by police during an investigation.

The central legal issue before the High Court was whether evidence obtained by police in circumstances where the police had acted unlawfully could be admitted in subsequent criminal proceedings. This involved an examination of the common law exclusionary rule and its application to evidence obtained in breach of statutory or common law rights.

Gaudron and Kirby JJ, in their joint judgment, affirmed the principle that evidence obtained in contravention of the law is not automatically inadmissible. They reasoned that the court retains a discretion to admit such evidence, weighing the probative value of the evidence against the impropriety of its acquisition. The judges emphasised that the discretion to exclude evidence is not to be exercised as a disciplinary measure against the police but rather to ensure a fair trial and uphold the integrity of the judicial process. They considered the nature of the illegality, the importance of the evidence, and the impact of its admission or exclusion on the fairness of the trial.

The High Court ultimately held that the evidence in question was admissible, finding that its probative value outweighed the impropriety of its acquisition and that its admission would not render the trial unfair.