Legitimate Expectation vs Procedural Fairness in Judicial Review
Two overlapping but distinct public law grounds of judicial review: substantive legitimate expectation and the duty of procedural fairness.
Overview
Judicial review of public authority decisions involves multiple grounds of challenge. Two frequently confused but analytically distinct grounds are: (1) legitimate expectation — the principle that a public body cannot depart from a representation that created an expectation without good reason; and (2) the duty of procedural fairness (natural justice / common law procedural fairness) — the principle that a person affected by a decision is entitled to a fair hearing. Both are independent grounds of challenge in judicial review proceedings.
Side-by-Side Comparison
Legitimate Expectation
Pros
- Can generate both procedural protection (expectation of consultation) and substantive protection (expectation of a beneficial outcome)
- Applies to representations made in clear terms — formal policy statements, letters, or oral representations by authorised officials
- Substantive legitimate expectation can require a body to provide the benefit promised: R (Coughlan) v North and East Devon HA [2001]
- A powerful ground where a public body has changed policy without warning after making clear representations
Cons
- Only arises from a clear and unambiguous representation to an identifiable person or group
- Can be overridden by a sufficiently compelling public interest (R (Bhatt Murphy) v ILPA [2008])
- Does not protect expectations generated by unlawful representations (unlawful acts cannot generate legitimate expectation)
- Substantive protection is stronger where the representation was made to individuals rather than the public at large
Best For
Cases where a public authority has made a clear promise or representation and then departed from it to the detriment of the claimant — particularly in licensing, immigration, planning, and social welfare decisions.
Procedural Fairness (Natural Justice)
Pros
- A fundamental constitutional principle — not easily displaced by statute
- Does not require a specific representation — applies whenever a decision adversely affects an individual's interests
- Wide application — extends to any decision that is adverse to the person affected
- Courts can require a decision to be retaken with a fair procedure even where the ultimate outcome may be the same
Cons
- The content of 'fairness' is contextual — what is required depends on the statutory context, the nature of the decision, and the interests at stake (Council of Civil Service Unions v Minister for the Civil Service [1985])
- Compliance with procedural fairness does not guarantee a different outcome — it only ensures a fair process
- In national security or other sensitive contexts, natural justice requirements can be modified or displaced
Best For
Any case where a public authority made a decision that adversely affected an individual without first giving them an adequate opportunity to make representations — planning decisions, licensing, employment in public bodies, welfare benefit decisions.
Key Differences
Our Recommendation
In practice, judicial review grounds are pleaded in the alternative — both grounds should be considered and pleaded if the facts support them. Legitimate expectation adds most value where a specific representation was made; procedural fairness is the baseline protection in any adverse decision. Both grounds require urgent attention — the 3-month time limit for judicial review runs from the date of the decision, not from when the claimant becomes aware of the problem. Always take specialist public law advice.