No general legal duty says they must — but the exceptions cover more situations than you'd expect.
There's no single, general legal rule in UK administrative law forcing every public body to explain every decision. That surprises most people, since it seems like basic fairness. But the courts have built a substantial set of exceptions on top of that starting point — and in practice, they cover a lot of ground. Where a decision comes with a right of appeal, or where it significantly affects your personal or financial interests, a duty to give reasons is very often found to apply, even without an express statutory requirement.
| Situation | Why reasons are more likely required |
|---|---|
| A statutory appeal or tribunal route exists against the decision | Courts have held that without reasons, a meaningful appeal is effectively impossible |
| Your civil rights or obligations are directly engaged | Higher courts treat significant personal impact as a strong factor favouring a reasons duty |
| Judicial review is available | Similar logic applies — you can't properly challenge a decision you don't understand |
| No appeal route and low personal impact | Weakest case for an implied duty to give reasons |
The exact strength of the duty depends heavily on context — there's no fixed formula, and the courts have deliberately avoided setting one, preferring to weigh the circumstances of each type of decision.
Separately from the strict legal duty question, the Ombudsman's own published list of what counts as maladministration explicitly includes refusing to answer reasonable questions and failing to tell someone about their rights of appeal. So even where a court might not find a binding legal duty to give reasons in your specific case, refusing to explain a rejection — especially combined with not mentioning any appeal route — is squarely the kind of conduct a complaint to the Ombudsman can address.
Use Kibbo's Public Services & Administration tools to draft your request for reasons and your next steps.
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