JUDICIAL REVIEW – Denial of application for Firearm User’s Licence – Whether administrative delay was unreasonable and/or irrational and amounted to procedural unfairness – Whether Claimant’s right to be heard was breached contrary to principles of natural justice – Whether certiorari and mandamus should be granted – Whether the Firearms (Prohibition, Restriction and Regulation) Act, 2022 applies retrospectively – Firearms Act, sections 37 and 37A – Interpretation Act, section 25(2)(c) and (e) – Part 56, Civil Procedure Rules (CPR).