A minister makes a decision that no reasonable decision-maker could have reached. Which ground of review applies?

Answer and explanation

Correct answer: A. Irrationality, also called Wednesbury unreasonableness

  1. Step 1: Associated Provincial Picture Houses v Wednesbury Corporation sets the test for unreasonableness.
  2. Step 2: The threshold is high: a decision so unreasonable that no reasonable authority could have made it.
Answer
Irrationality, also called Wednesbury unreasonableness.
Why not the others: Illegality concerns powers; procedural impropriety concerns fairness; legitimate expectation concerns promises.

Practise more Judicial review and human rights.

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