Bryan William Mortensen and Elizabeth Gedge Eassie v State of New South Wales

Bryan William Mortensen and Elizabeth Gedge Eassie (the applicants) sought leave to appeal against a decision of the Supreme Court of New South Wales, which had dismissed their application for a writ of habeas corpus. The applicants were detained pursuant to an extradition order made by the Governor of New South Wales under the Fugitives Offenders Act 1881 (UK) and the Extradition (Commonwealth Countries) Act 1966 (Cth). The applicants contended that the extradition order was invalid.

The primary legal issue before the Court of Appeal was whether the applicants' detention was lawful, specifically concerning the validity of the extradition order. This involved determining whether the Governor had acted within his powers in issuing the order, and whether the applicants had been afforded due process, including the right to be heard before the order was made. The court also considered the proper interpretation and application of the relevant extradition legislation.

The Court of Appeal, in dismissing the application for leave to appeal, reasoned that the Governor's power to issue an extradition order under the relevant legislation was a prerogative power, and that the applicants had no statutory or common law right to be heard before the exercise of that power. The court found that the applicants' detention was lawful, as the extradition order had been validly made. The court applied principles relating to the exercise of executive power and the limited scope for judicial review of such decisions in the context of extradition proceedings.