Mickelberg v The Queen

The High Court of Australia considered an appeal by the applicant, Mickelberg, against his conviction for conspiracy to defraud. The applicant and his brothers were accused of defrauding the Western Australian government of $1.2 million by falsely claiming a gold mining subsidy. The central dispute revolved around the admissibility of certain evidence, specifically tape recordings of conversations between the applicant and his co-conspirators, which were alleged to have been obtained unlawfully.

The primary legal issue before the High Court was whether the tape recordings, obtained by police through covert surveillance, were admissible in evidence despite the potential illegality of their acquisition. This raised questions concerning the discretion of the trial judge to exclude evidence obtained improperly or in contravention of legal rights, and the principles governing the admission of such evidence in criminal proceedings. The court also had to consider whether the alleged illegality in obtaining the evidence was so significant as to warrant its exclusion.

The High Court, in a joint judgment, affirmed the principle that a trial judge possesses a discretion to exclude evidence obtained improperly or in contravention of a person's rights, even if it is relevant and otherwise admissible. However, the court held that this discretion should not be exercised lightly. In this instance, the court found that while the method of obtaining the recordings might have been questionable, it did not render the evidence unfairly prejudicial to the applicant or otherwise warrant its exclusion. The jury was properly instructed on the weight to be given to the evidence, and the trial judge had correctly exercised his discretion in admitting the recordings. The appeal was therefore dismissed.