The Commissioner of the Police Service v Cornack

In this case, the Commissioner of the Police Service sought judicial review of a decision by the District Court of Western Australia that had quashed a finding of privilege in committal proceedings. The Commissioner argued that the District Court had exceeded its jurisdiction by ruling on the claim of privilege, and that the prerogative remedies available under the Judicature Act 1898 (WA) were applicable in this case. The Court of Appeal had to determine whether the prerogative remedies could be used to review the District Court's ruling and whether the committal proceedings were administrative or judicial in nature.

The central legal issues before the Court were whether the prerogative remedies were available to review the District Court's ruling on the claim of privilege and whether committal proceedings were administrative or judicial in nature. The Court had to consider the distinction between administrative and judicial functions and the jurisdictional error involved in the District Court's ruling.

The Court held that the committal proceedings were judicial in nature, and therefore, the prerogative remedies were not available to review the District Court's ruling on the claim of privilege. The Court found that the District Court did not commit a jurisdictional error by ruling on the claim of privilege, and therefore, the application for judicial review was dismissed. The Court also noted that the distinction between administrative tribunals and inferior courts was not relevant in this case, as the prerogative remedies were not applicable to judicial decisions.

The Court dismissed the application and held that the prerogative remedies were not available to review the District Court's ruling on the claim of privilege. The Court found that the committal proceedings were judicial in nature and that the District Court did not commit a jurisdictional error by ruling on the claim of privilege. The Court did not make any further orders.