Combe v Combe [1951] 2 KB 215
Facts
Husband, upon petition of divorce promised his wife, C, £100 a year free of tax This promise from the husband stopped the C going to Divorce Court for maintenance, by her own choice The C did not give any consideration for such a promise When the husband did not make good on his promise, the C took her claim to court and relied upon the concept of promissory estoppel which was applied 4 years prior in this High Trees case At first instance, the court sided with the C, however the husband appealed this
Legal Issue
Could the wife enforce the unsupported payment promise through promissory estoppel, or treat her unrequested forbearance from maintenance proceedings as consideration?
Held
The Court of Appeal allowed the husband's appeal. The wife could not use promissory estoppel as an independent basis for enforcing his promise of annual payments. The doctrine did not create a cause of action where the requirements of contract had not been satisfied.
Her decision not to seek maintenance did not supply consideration on the facts, because that forbearance had not been requested as the price of the promise. Reliance and bargained-for consideration were therefore distinct. Denning LJ explained the limited role of High Trees: it could prevent a party insisting on existing rights inconsistently with an effective assurance, but could not generally replace the consideration needed to sue on a new promise. The domestic setting did not alter that analytical requirement.
⭐ Legal Principle
Promissory estoppel does not ordinarily create an independent cause of action enforcing a promise unsupported by consideration. A voluntary act of reliance is not necessarily consideration: the act or forbearance must form part of the requested bargain. The doctrine's defensive operation remains distinct from contractual formation.
Significance
Combe places an important limit on High Trees. It prevents an argument that every relied-upon assurance has become a contract enforceable by action. The case also shows why an act that could constitute consideration in another arrangement may fail where it was not requested in exchange for the promise. Compare Collier, where estoppel was raised defensively against an existing debt claim. The distinction is the legal function of the doctrine, not simply whether reliance can be identified.
Common exam questions about this case
Why was the wife’s decision not to seek maintenance insufficient consideration?
The husband had not requested that forbearance as the price of his promise. Her voluntary decision could not retrospectively turn the assurance into an exchange. Combe therefore separates factual reliance from consideration, even where the action taken might have value or consequence for the person relying on the promise.
What limit did Combe place on High Trees?
Promissory estoppel could not be used to create an independent cause of action where none otherwise existed. High Trees addressed restraint on enforcing existing rights, rather than a general substitute for consideration. The wife needed an enforceable basis for claiming the promised payments, not simply evidence that she trusted the assurance.
How can Combe and Collier be distinguished?
The wife in Combe sought to enforce a new promise as the basis of her claim. Collier raised an assurance as a defence to a creditor's existing demand. That distinction explains why the general restriction on estoppel as a cause of action does not automatically dispose of a debt compromise defence.