Charley's Windsor Hours Limited v Prime Minister and Minister of Economic Growth & Job Creation

Judicial review – Application for leave to apply for judicial review – Threshold test: Whether the applicant has an arguable case for judicial review with a realistic prospect of success - Doctrine of ultra vires – Whether statutory authority acted ultra vires – Principles of illegality and irrationality – Whether statutory authority acted illegally and irrationally - Duty to give reasons – Whether the decision of the statutory authority should be set aside for failure to give reasons