D & C Builders v Rees [1965] illustrates the protective function of the rule in Foakes v Beer, shielding creditors from unscrupulous debtors. It establishes that promissory estoppel cannot be invoked where a promise to accept part payment of a debt was extracted through unfair pressure, as it is not inequitable for a creditor to resile from an agreement that was not freely given.
Facts of the Case
The plaintiffs, a small building firm, were owed a balance of £482 13s 1d by the defendant, Mr Rees. After ignored requests for payment, the builders fell into “desperate financial straits”. Aware of this, the defendant’s wife offered £300 in full settlement, stating that if they did not accept, they would get nothing. Feeling they had no choice, the plaintiffs accepted and gave a receipt marked “in completion of the account” — then sued for the balance.
Legal Issues
- Did the part payment constitute sufficient consideration to satisfy the whole debt under Foakes v Beer?
- Could the defendant rely on promissory estoppel to prevent recovery of the balance?
Judgement
The Court of Appeal ruled for the builders.
- Common law: following Foakes v Beer, payment of a lesser sum is not satisfaction for the whole, as the debtor merely performs an existing obligation.
- Equity: Lord Denning MR held the defendant could not rely on promissory estoppel — the doctrine requires a “true accord” (a genuine, voluntary agreement). Because the defendant had acted inequitably by exploiting the builders’ difficulties, it was not inequitable for the builders to insist on their full rights.
Authority and Significance
- “Clean hands”: a party seeking an equitable doctrine must have acted equitably themselves.
- Limits of promissory estoppel: it will not protect a party who used illegitimate pressure or economic duress to extract a promise.
- Reinforcement of Foakes v Beer: the strict common-law rule on liquidated debts acts as a safeguard against debtors using a creditor’s distress as a bargaining chip.