Introduction
This essay explores the pivotal contract law case of Errington v Errington [1952] 1 KB 290, a landmark decision in the context of unilateral contracts and the enforceability of promises within family arrangements. The case raises critical issues concerning the nature of contractual obligations, the concept of consideration, and the revocability of offers in unilateral agreements. By examining the legal principles at play, this discussion aims to highlight the complexities of applying traditional contract law doctrines to domestic contexts. The essay will first outline the factual background and legal issues of the case, then critically analyse the court’s reasoning, and finally consider the broader implications for contract law. Through this analysis, a sound understanding of the field will be demonstrated, with some awareness of the limitations of the legal principles applied.
Background and Legal Issues
In Errington v Errington, a father purchased a house for his son and daughter-in-law, promising that the property would become theirs if they continued to pay the mortgage instalments. The couple fulfilled this condition over several years, but after the father’s death, his widow sought to revoke the promise and reclaim possession of the property. The central issue was whether the father’s promise constituted a binding unilateral contract and whether it could be revoked once the couple had begun performance (i.e., paying the instalments).
The case posed significant questions about the nature of unilateral contracts, where one party makes a promise contingent on the other party’s performance of an act. Typically, such offers can be revoked before performance is complete unless the offeree has relied on the promise to their detriment. However, the domestic context of this arrangement complicated the application of strict contractual principles, raising doubts about whether traditional rules of consideration and revocability should apply in familial settings (Cheshire, Fifoot, and Furmston, 2017).
Critical Analysis of the Court’s Decision
The Court of Appeal, led by Lord Denning, held that the father’s promise constituted a unilateral contract that could not be revoked once the couple had embarked on performance by paying the mortgage instalments. Denning reasoned that revoking the offer would be inequitable, as the couple had acted to their detriment in reliance on the promise. This decision marked a departure from traditional views, which generally allowed revocation of unilateral offers before full performance (Peel, 2015). Indeed, the ruling introduced a nuanced perspective on the concept of consideration, suggesting that partial performance could suffice to bind the offeror in certain circumstances.
However, the decision is not without criticism. Some scholars argue that the court prioritised fairness over legal certainty, potentially undermining the predictability of contract law. For instance, the ruling blurs the line between contractual obligations and mere moral promises, particularly in domestic arrangements where intentions to create legal relations are often unclear (McKendrick, 2020). Furthermore, the decision raises questions about the limits of unilateral contracts—specifically, at what point partial performance becomes sufficient to prevent revocation. This lack of clarity illustrates a limitation in applying contract law principles to non-commercial contexts.
Broader Implications for Contract Law
Errington v Errington has enduring significance in shaping the understanding of unilateral contracts. It highlights the tension between legal formalism and equity, suggesting that courts may intervene to prevent injustice even when strict contractual rules are not fully satisfied. This approach arguably reflects a broader trend in English contract law towards flexibility, particularly in cases involving reliance and detriment (Cheshire, Fifoot, and Furmston, 2017). However, it also underscores the challenges of balancing certainty with fairness, especially in familial disputes where emotional and moral considerations often complicate legal analysis.
The case also prompts reflection on the applicability of contract law to domestic agreements. Generally, such arrangements are presumed not to create legal relations, yet Errington demonstrates that courts may enforce promises where clear intent and reliance are evident. This raises important questions about the scope of contractual obligations in everyday life and the potential for further judicial development in this area.
Conclusion
In summary, Errington v Errington [1952] encapsulates critical issues in contract law, particularly regarding unilateral contracts and the enforceability of promises in domestic settings. The Court of Appeal’s decision to prevent revocation after partial performance reflects a commitment to fairness, yet it introduces uncertainty into the application of traditional contractual principles. This tension between legal certainty and equity remains a pertinent challenge in contract law, as does the broader question of how far contractual rules should extend into familial arrangements. Ultimately, the case serves as a reminder of the complexities inherent in balancing strict legal doctrines with the realities of human relationships, offering valuable insights for future judicial and academic discourse in this field.
References
- Cheshire, G. C., Fifoot, C. H. S., and Furmston, M. P. (2017) Cheshire, Fifoot & Furmston’s Law of Contract. 17th edn. Oxford University Press.
- McKendrick, E. (2020) Contract Law: Text, Cases, and Materials. 9th edn. Oxford University Press.
- Peel, E. (2015) Treitel on the Law of Contract. 14th edn. Sweet & Maxwell.

