Administrative law - Judicial review - Jurisdictional error - Witness protection scheme - Chief Commissioner of Police - Termination of protection - Confirmation on internal review - External review - Appeal to Director, Police Integrity - Legislation not specifying nature of appeal - Recognised categories of appeal - 72-hour time limit for determination of appeal - Chief Commissioner's specialist expertise not indicative of nature of appeal - Director erroneously defining appeal - Hearing de novo required - Witness Protection Act 1991 (No 15) ss 16(2), 17(3), 17(5), 17(6), 18(1), 18(2)

Administrative law - Judicial review - Privative clause - Principle of construction - Whether judicial review precluded - "Action or proceeding ... against any person" - Witness Protection Act 1991 (No 15) 12(3).

Practice and procedure - Appeal - Leave to appeal - Judicial review - Refusal of certiorari - Whether final.

Administrative law — Judicial review — Privative clause — Police Integrity Act 2008 (Vic) ss 40(4)(b)(1), 52, 109(1)

Human rights — Charter of Human Rights and Responsibilities — Equality before law — Equal protection of law without discrimination — Freedom from cruel, inhuman or degrading treatment — Complaint of assault by police — Whether implied procedural right to effective investigation of complaint — Charter of Human Rights and Responsibilities Act 2006 (Vic) ss 8(3), 10(b), 32, 38(1)