Xenophon v State of SA

The applicants, Ms. Xenophon and Mr. Xenophon, sought judicial review of a decision by the State of South Australia to refuse their application for a licence to possess a firearm. The dispute concerned the interpretation and application of the *Firearms Act 1997* (SA) and the *Administrative Decisions (Judicial Review) Act 1977* (Cth). The matter was heard by the High Court of Australia.

The primary legal issue before the High Court was whether the State's refusal to grant the licence was based on a proper understanding and application of the relevant legislative provisions, particularly those relating to the applicant's suitability to possess a firearm. The court was required to consider the scope of the decision-maker's discretion and the grounds upon which a licence could lawfully be refused.

The High Court determined that the decision-maker had erred in law by failing to properly consider the evidence presented by the applicants regarding their suitability and by applying an incorrect interpretation of the statutory criteria for licence refusal. The court emphasised that administrative decisions must be based on a rational assessment of the evidence and a correct understanding of the governing legislation. The principles of administrative law, including the requirement for lawful, reasonable, and procedurally fair decision-making, were central to the court's reasoning.

The High Court made orders quashing the decision of the State of South Australia to refuse the licence and remitted the matter to the State for reconsideration according to law.