Frustration

Frustration concerns the effect of a supervening event on a contract which, when made, was valid and operative. It is therefore distinct from the vitiating factors already studied in Weeks 6 to 9, and from common mistake in Week 7. Mistake asks whether the contract was defective at formation. Frustration asks whether a later event has made continued performance legally unjustifiable according to the common law’s demanding standard.

The doctrine operates automatically. If a contract is frustrated, both parties are discharged from future performance at the moment of frustration. Neither party elects to terminate; the contract is brought to an end by operation of law. This is crucial in Durham problem questions. Do not write as though frustration is a discretionary remedy or a right of rescission. It is a doctrine of discharge, followed by statutory adjustment of losses under the Law Reform (Frustrated Contracts) Act 1943.

The modern test is conventionally taken from Lord Radcliffe in Davis Contractors Ltd v Fareham Urban District Council: without default of either party, the obligation must have become incapable of performance because the circumstances would render performance radically different from that undertaken. The phrase radically different is indispensable, but it is not a conclusion. It requires analysis of the contract’s terms, context, allocation of risk, foreseeability, and the nature of the supervening event. The courts repeatedly stress that increased expense, hardship, delay, or loss of profitability is not enough.

Frustration matters in first-year Contract because it connects several earlier topics. Express and implied terms determine whether the risk has already been allocated. Exclusion and force majeure clauses may prevent the doctrine from arising at all, because the parties have provided for the event. Construction is therefore often the first step. Breach matters because frustration is unavailable where the alleged frustrating event is caused by the party relying on it. Illegality matters because a supervening change in law or outbreak of war may make performance legally impossible. Remedies matter because the harsh common law rules on prepayments were altered by the 1943 Act.

The doctrine is narrow. That narrowness is not accidental. Contract law depends upon risk allocation. Parties frequently contract precisely because future events are uncertain. The law will not release a promisor merely because the bargain has become worse than expected. Frustration is reserved for cases in which the contract, properly understood, no longer calls for the performance now demanded.

The classical common law began from a severe premise: contractual promises were absolute. In Paradine v Jane (1647) Aleyn 26, a tenant remained liable to pay rent although he had been dispossessed by an invading army. The court treated the tenant’s covenant as an undertaking to pay in all events, unless the parties had expressly provided otherwise. The idea was simple and commercially stern: those who make promises must keep them, and the law will not readily imply excuses.

That absolute approach became strained in nineteenth-century cases involving destruction of the subject matter. Taylor v Caldwell (1863) 3 B & S 826 is the canonical turning point. The parties contracted for the hire of a music hall. Before the dates of performance, the hall burned down without fault. Blackburn J held that the parties were discharged because the continued existence of the hall was an implied condition of the contract. The doctrinal language was initially one of implied term: the parties were taken to have contracted on the basis that the essential thing would continue to exist. This preserved the appearance of contractual consent while softening the harshness of absolute liability.

The coronation cases extended the doctrine beyond physical impossibility. In Krell v Henry [1903] 2 KB 740, rooms were hired for the days on which Edward VII’s coronation procession was expected to pass. The procession was postponed. The room still existed and could still be occupied, but the commercial purpose had disappeared. The Court of Appeal held the contract frustrated because the procession was the foundation of the bargain. By contrast, in Herne Bay Steamboat Co v Hutton [1903] 2 KB 683, the charter of a steamboat was not frustrated where one purpose, viewing the naval review, had failed but a cruise around the fleet remained possible. The lesson is already exam-critical: frustration is not satisfied merely because one party’s motive fails. The shared foundation of the contract must have been destroyed.

The implied-term explanation later became unsatisfactory. It was artificial to say that parties had impliedly agreed about events they had never contemplated. In Davis Contractors, the House of Lords re-centred frustration on construction, justice, and the change in the contractual obligation. Lord Radcliffe’s formulation treats frustration as a legal doctrine, not merely a search for tacit intention. The question is whether the new circumstances make the performance required radically different from the contractual undertaking.

The common law’s remedial consequences were also harsh. Before statutory reform, frustration discharged future obligations but generally left accrued rights intact. Chandler v Webster [1904] 1 KB 493 meant that money payable before frustration remained payable even where consideration had failed. The House of Lords softened this in Fibrosa Spolka Akcyjna v Fairbairn Lawson Combe Barbour Ltd [1943] AC 32 by allowing recovery of prepayments where there had been a total failure of consideration. Yet Fibrosa itself exposed the insufficiency of common law restitution: what of expenses incurred in reliance on the contract, or partial benefits conferred? Parliament responded with the Law Reform (Frustrated Contracts) Act 1943. The Act does not define frustration. It assumes the common law doctrine and adjusts the financial consequences once the doctrine has operated.

The first principle is that frustration is a doctrine of supervening events. There must be a valid contract, followed by an event occurring after formation. If the alleged defect existed at formation, analyse mistake, not frustration. This distinction is essential after Week 7. A contract for the sale of goods already destroyed before the contract raises common mistake or statutory provisions on perished goods; a contract for hire of a venue which burns down after formation raises frustration.

The second principle is that the event must be sufficiently serious. The governing formula is that performance has become impossible, illegal, or radically different from that undertaken. Physical impossibility is the easiest case: destruction of the subject matter, death or incapacity in contracts for personal services, or unavailability of an essential person or thing. Illegality is also recognised: a change in law, outbreak of war, or governmental prohibition may make performance unlawful. Frustration of purpose is more difficult. It requires that the common purpose or foundation of the contract has failed, not merely that one party’s expected benefit has evaporated.

The third principle is that the contract must not have allocated the risk. Always begin with construction. If the parties have included a force majeure clause, price-adjustment clause, sanctions clause, cancellation clause, or an express provision governing delay, the court will normally give effect to that bargain. A force majeure clause may be wider or narrower than frustration. It may permit suspension, extension of time, termination on notice, or relief from liability without automatically discharging the whole contract. Where the clause covers the event, frustration is unlikely because the event is not outside the contractual allocation of risk. Section 2(3) of the 1943 Act reinforces this: contractual provisions intended to operate on frustrating-type events are given effect.

The cases show both the generosity and the severity of frustration. Taylor v Caldwell supplies the original escape from absolute contractual liability. It remains the paradigm of physical impossibility: where the continued existence of a thing is essential to performance, its accidental destruction may discharge the contract. But the case is not authority for a general judicial power to relieve hard bargains. The implication was tied to the nature of the contract itself.

Krell v Henry and Herne Bay Steamboat Co v Hutton must be learned together. Both arose from the postponed coronation of Edward VII. In Krell, the hire of rooms was commercially and mutually centred on viewing the procession. The room had not physically disappeared, but the foundation of the contract had. In Herne Bay, the charter still had substantial possible performance: a day’s cruise around the fleet. The contrast demonstrates the difference between failure of common purpose and disappointment of an anticipated advantage.

Davis Contractors is the modern doctrinal anchor. Builders agreed to construct houses within a period; labour shortages and delays made performance much more onerous and expensive. The House of Lords held that the contract was not frustrated. The builders had undertaken construction work, and that was still what they were required to do. The case is the leading warning that increased expense and delay do not suffice. It also moved English law away from the fiction of implied intention towards the question whether performance has become radically different.

Tsakiroglou confirms that commercial difficulty is not enough. A seller had to ship goods after the Suez Canal closed. Shipment via the Cape was longer and costlier, but still shipment of the contracted goods. The contract did not specify the Suez route. The House of Lords refused frustration. The case is valuable in problem questions where a party argues that performance has become uneconomic.

National Carriers Ltd v Panalpina (Northern) Ltd is important for leases. The House of Lords accepted, in principle, that a lease could be frustrated, but held that a 20-month closure of the access road did not frustrate a 10-year lease with substantial time left to run. The proportionality between delay and contractual term matters. The case also shows the modern willingness to apply frustration across categories, while preserving a high threshold.

The Sea Angel gives the most sophisticated modern restatement. A vessel was detained after a salvage operation. The Court of Appeal emphasised that frustration is a multi-factorial inquiry involving the terms, context, knowledge, expectations, assumptions, allocation of risk, and the nature of the supervening event. Rix LJ’s judgment is particularly useful for essays because it resists mechanical tests.

Canary Wharf (BP4) T1 Ltd v European Medicines Agency illustrates the doctrine’s contemporary limits. The EMA argued that Brexit frustrated a long lease of London premises. Marcus Smith J rejected that argument. Brexit did not make performance impossible or radically different; the EMA could still pay rent and deal with the premises according to the lease. The case is a strong reminder that political, economic, or regulatory disruption does not automatically frustrate sophisticated commercial contracts.

See practice questions section below.

See further reading section below.