1. ADJR Section 6
2. Princple of Legality
   1. Vadarlis
   2. Foundation Cases
      1. Entick V Carrington
      2. A v Hayden (No 2)
      3. Church of Scientology Inc v Woodward
      4. Congreve
   3. Presumption of Regularity.
3. Ultra Vires
   1. Simple Ultra Vires
   2. Extended Ultra Vires
4. Impropriety
   1. s 5(1)(e) ADJR --> Provides for improper exercise of authority as grounds for review
      1. Use of Relevant / Irrelevant Considerations - ss 5(2)(a)(b)
         1. s 5(2)(a): 'taking an irrelevant consideration into account in the exercise of power'
            1. Error of law
            2. Water Conservation Commission v Browning
            3. Padfield v MAFF
            4. Murphyores
            5. Irrelevant use of Policy
            6. Roberts v Hopwood
            7. Bowser v Randwick
         2. s 5(2)(b) 'taking a relevant consideration into account in the exercise of authority'
            1. Sean Investments v Mackellar
            2. Minister for Aboriginal Affairs v Peko-Wallsend
      2. Improper Purpose - ss 5(2)(c)(d)
         1. s 5(2)(c) 'an exercise of power for a purpose other than a purpose for which the power is conferred'
         2. s 5(2)(d) 'an exercise of discretionary power in bad faith'
         3. Proper Purpose & Good Faith: 'Mixed Purpose'
            1. Municipal Council of Sydney v Campbell
            2. Thompson v Randwick Council
            3. Perth City v DL
            4. Samrein v Minister for Water and Sewerage Development Board (1982)
            5. Schlieske (1988)
         4. Multiple statutory purposes
            1. Project Blue Sky
         5. R v Toohey Exp Northern Land Council
            1. substantial purpose test
         6. Evidentary burden on those asserting improper purpose
      3. Wrong Decision Maker - s 5(2)(e)
         1. s 5(2)(e) 'an exercise of a personal discretionary power at the direction or behest of another person'
      4. Fetter of Discretion - s 5(2)(f)
         1. The higher the seniority of the decision-maker the greater the discretion
         2. s 5(2)(f) 'an exercise of a discretionary power in accordance with a rule or policy without regard to the merits of the particular case'
            1. One invested with discretion must exercise discretion
            2. Drake and Minister for Immigration and Ethnic Affairs (no 2) (1979) 2 ALD 634
            3. Green v Daniels (1977) 13 ALR 1