Judicial Review in UK Law

First, the doctrine of proportionality may require the reviewing court to assess the balance which the decision maker has struck, not merely whether it is within the range of rational or reasonable decisions. Secondly, the proportionality test may go further than the traditional grounds of review inasmuch as it may require attention to be directed to the relative weight accorded to interests and considerations.

It may well be, however, that the law can never be satisfied in any administrative field merely by a finding that the decision under review is not capricious or absurd.

Judicial review has I think developed to a stage today when without reiterating any analysis of the steps by which the development has come about, one can conviently classify under three heads the grounds upon which administrative action is subject to control by judicial review. The first ground I would call "illegality," the second "irrationality" and the third "procedural impropriety."

By "irrationality" I mean what can by now be succinctly referred to as "Wednesbury unreasonableness" ( Associated Provincial Picture Houses Ltd. v. Wednesbury Corporation [1948] 1 K.B. 223). It applies to a decision which is so outrageous in its defiance of logic or of accepted moral standards that no sensible person who had applied his mind to the question to be decided could have arrived at it.

I turn secondly to the proper purpose of the remedy of judicial review, what it is and what it is not. His was a dissenting judgment but the dissent was not concerned with this point. Judicial review is concerned, not with the decision, but with the decision-making process. Unless that restriction on the power of the court is observed, the court will in my view, under the guise of preventing the abuse of power, be itself guilty of usurping power.

Judicial review is available where a decision-making authority exceeds its powers, commits an error of law, commits a breach of natural justice, reaches a decision which no reasonable tribunal could have reached, or abuses its powers.