​KembaraXtra – Legal Terms – Procedural Impropriety


Procedural impropriety refers to a failure by a public authority to act according to the requirements of procedural fairness and the common-law principles of natural justice. It is one of the principal grounds upon which courts may review and challenge administrative decisions through judicial review. Procedural impropriety may arise where a public authority fails to follow statutory procedures, ignores mandatory procedural safeguards, acts unfairly, or denies a person the opportunity to be heard. Examples include failing to provide adequate notice, refusing a fair hearing, showing bias, or disregarding consultation requirements imposed by law. The doctrine ensures that public bodies exercise their powers fairly, transparently, and consistently with legal standards. It therefore protects individuals against arbitrary or unfair exercises of public power.


The concept was clearly articulated by Lord Diplock in the landmark case of Council of Civil Service Unions v Minister for the Civil Service [1985] AC 374, where he identified procedural impropriety, illegality, and irrationality as the major common-law grounds of judicial review. Procedural impropriety is closely linked to the rules of natural justice, particularly the right to an impartial decision-maker and the right to be heard before adverse decisions are made. Courts assessing claims of procedural impropriety examine whether the decision-making process itself was lawful and fair rather than whether the decision was substantively correct. The doctrine therefore reinforces the rule of law by requiring public authorities to comply with legal procedures and principles of fairness. Modern cases, including Bank Mellat v HM Treasury [2013] UKSC 38, demonstrate the continuing importance of procedural fairness within administrative law and human rights jurisprudence.