Nguyen, Booth v The Queen

In *Nguyen, Booth v The Queen*, the High Court of Australia considered an appeal by the applicants, Nguyen and Booth, against their convictions for conspiracy to import a commercial quantity of heroin. The applicants had been convicted in the Supreme Court of New South Wales and their appeals to the Court of Criminal Appeal of New South Wales were dismissed. The central dispute revolved around the admissibility of certain evidence and the fairness of the trial process.

The High Court was required to determine whether the trial judge had erred in admitting evidence obtained through an alleged breach of an implied undertaking of confidentiality by the Australian Federal Police. Specifically, the applicants argued that the evidence, which included intercepted communications, should have been excluded because it was obtained in circumstances where the police had acted in contravention of an implied undertaking of confidentiality owed to them. A further issue concerned whether the trial judge had adequately directed the jury on the issue of entrapment.

Gleeson CJ and Gaudron J, in their joint judgment, held that the implied undertaking of confidentiality did not extend to preventing the use of evidence obtained in the course of a criminal investigation, even if that investigation involved the use of information obtained under circumstances that might otherwise attract confidentiality. Their Honours reasoned that the public interest in the prosecution of serious criminal offences outweighed any private interest in maintaining confidentiality in such a context. Regarding the entrapment direction, the Court found that while the concept of entrapment was not a defence in Australian law, the jury had been properly instructed to consider the applicants' conduct and the role of the police in the events. The appeal was dismissed.