The principle that precludes a person from asserting something contrary to what is implied by a previous action or statement of that person or by a previous pertinent judicial determination.
- ‘Historically, both these forms of estoppel are common law developments.’
- ‘Given the absence of any such promise, any claim based on promissory estoppel would fail.’
- ‘I take the view that the question of issue of estoppel does not and cannot arise in judicial review proceedings.’
- ‘On the full facts the judge found that there was an estoppel and awarded him £200,000 based on the cost of care.’
- ‘In my judgment there is no estoppel operating against the plaintiff.’
- ‘I think that it is unhelpful to introduce private law concepts of estoppel into planning law.’
Mid 16th century: from Old French estouppail bung from estopper (see estop).