Specific performance and injunctions

Specific performance and injunctions are the principal coercive remedies in contract. They matter because they expose a central tension in English contract law. The orthodox remedial response to breach is monetary: the claimant receives damages measured, normally, by the expectation interest. Yet some promises cannot sensibly be valued by an award of money, or the law regards monetary substitution as an inadequate vindication of the claimant's contractual entitlement. Equity then intervenes by compelling performance or restraining breach.

Specific performance is an order requiring the defendant to do what was promised. An injunction is an order requiring the defendant not to do something, or, less commonly, to take positive steps. In contract, the most common injunction is prohibitory: it restrains breach of a negative undertaking, such as a covenant not to work for a rival, not to disclose confidential information, or not to use land in a prohibited way. Mandatory injunctions overlap functionally with specific performance, because both may require affirmative conduct. The label is less important than the equitable principles governing coercive relief.

The first point for a Cambridge answer is that these are not remedies as of right. They are discretionary, equitable, and conditioned by practical judgment. The court asks whether damages are adequate, whether the contract is sufficiently certain, whether the claimant has behaved equitably, whether the order would be oppressive, whether supervision would be required, whether performance is still possible, and whether third-party or public interests make coercion inappropriate. Those considerations are not loose moral intuitions. They are structured doctrines with established lines of authority.

The second point is that the remedy is not confined to land, though contracts concerning land remain the paradigm. Equity has traditionally assumed damages inadequate in land transactions because each parcel is unique. For ordinary goods, damages will usually suffice; for unique goods or scarce commercial supplies, specific performance may be granted. For personal services, coercive relief is heavily constrained: the court will not specifically enforce contracts of employment or personal work, and it will not use an injunction to achieve indirectly what it refuses to do directly.

The third point is that the topic links backwards to damages, mitigation, remoteness and discharge. A claimant seeking specific relief must often show that damages would not protect the performance interest; a defendant resisting it will argue that substitutionary money is adequate and that the claimant can mitigate. Where damages are awarded instead of an injunction or specific performance under section 50 of the Senior Courts Act 1981, the court is not simply applying common law damages; it is exercising an equitable jurisdiction to substitute money for coercion.

In Tripos terms, this topic rewards structure. Begin with the remedial classification, identify whether the order sought is specific performance, a prohibitory injunction, or a mandatory injunction, then work through adequacy, bars, discretion and effect. The best answers avoid treating discretion as a black box. Equity is flexible, but not unprincipled.

The history of specific performance and injunctions is the history of the division between common law and equity. The common law courts, acting through the writ system, largely gave damages for breach of covenant or assumpsit. They did not ordinarily compel the defendant to do the promised act. Equity, administered by the Court of Chancery, acted in personam upon the conscience of the defendant. That institutional distinction explains several features which survive the Judicature reforms. Specific performance is personal coercion, backed ultimately by contempt. It is not a proprietary magic wand, although it is often granted in relation to property.

Equity developed specific performance where common law damages were inadequate. The classic example was land. A purchaser of Blackacre could not be made whole by market-value damages if the subject of the bargain had special location, character, strategic value or personal significance. Chancery therefore treated contracts for the sale of land as naturally suited to specific enforcement. Conversely, if the claimant could go into the market and buy a ready substitute, equity had no need to intervene. This explains the old contrast between land and ordinary chattels, visible in cases such as Adderley v Dixon and Cohen v Roche.

Injunctions followed a related but distinct path. A prohibitory injunction restraining breach of a negative covenant was attractive because it did not require the same degree of continuing supervision as an order compelling affirmative performance. Equity was willing to prevent a singer from performing elsewhere during an exclusive engagement, but not to force her to sing at the claimant's theatre. That distinction is classically associated with Lumley v Wagner. It gave equity a way of protecting the promisee's bargain while avoiding both personal compulsion and practical difficulties.

The fusion of law and equity by the Judicature Acts did not abolish the distinctiveness of equitable remedies. The modern Senior Courts Act 1981 preserves the jurisdiction to grant injunctions and specific performance, and section 50 authorises damages in addition to or in substitution for them. Yet the jurisdiction remains equitable. That means the remedy is still discretionary, affected by delay, hardship, clean hands, mutuality, certainty and the adequacy of damages.

The twentieth century saw the courts articulate more openly the pragmatic foundations of the remedial limits. In Co-operative Insurance Society Ltd v Argyll Stores (Holdings) Ltd, the House of Lords refused to compel a supermarket operator to keep a business open. The decision is not merely about supermarkets. It expresses a broader unwillingness to order the running of a business where compliance would be difficult to define, supervision would be burdensome, and contempt proceedings would become a form of commercial management by the court.

At the same time, the modern law is not hostile to performance. In Beswick v Beswick, the House of Lords granted specific performance to an administratrix where damages would have been nominal. In Sky Petroleum Ltd v VIP Petroleum Ltd, the court ordered supply of petrol where market scarcity meant damages were inadequate. In Araci v Fallon, an injunction protected the claimant's contractual right to the services of a jockey in a particular race. The historical lesson is therefore not that equity is exceptional in a pejorative sense. It is that coercive relief is reserved for cases in which damages fail to do justice and the order can be framed without unacceptable oppression or impracticability.

1. Specific performance and injunctions are discretionary equitable remedies. The claimant must first establish a valid contractual obligation and breach or threatened breach. The remedial question then asks whether coercive relief should be granted. The discretion is principled, not arbitrary. It is shaped by adequacy of damages, certainty, hardship, supervision, mutuality, delay, clean hands and public policy.

1. Damages must be inadequate. This is the central gateway. Specific performance is normally refused where the claimant can obtain a market substitute and recover any price difference. It is normally available for land because land is treated as unique. For goods, the position depends on whether they are ordinary, available market goods or specific, ascertained, unique, scarce or commercially irreplaceable goods. Section 52 of the Sale of Goods Act 1979 confirms the power to order specific performance of contracts to deliver specific or ascertained goods. The statute does not make the remedy automatic; it preserves discretion.

1. The contract must be sufficiently certain. A court cannot compel performance of an obligation whose content cannot be determined. This requirement overlaps with ordinary formation and construction principles studied earlier in the course. If the parties have not agreed what is to be done, equity will not write a contract for them. Greater precision is required where contempt may follow non-compliance. A decree must tell the defendant what conduct is required or prohibited.

1. The court will not usually enforce personal service obligations. There are two reasons. First, compelled personal work offends values of personal freedom. Secondly, performance quality is difficult to supervise. This applies to employment, artistic contracts and other relationships depending on confidence, skill or personal cooperation. The court may restrain breach of a negative covenant, but only if doing so does not effectively force the defendant to work for the claimant. Warner Bros v Nelson illustrates the permissible use of a negative covenant; Page One Records v Britton illustrates the limit.

The cases are best understood in families rather than as isolated authorities. The first family concerns inadequacy of damages. Adderley v Dixon states the classic land principle: damages may be inadequate where the subject matter has qualities not captured by market price. Cohen v Roche is the converse for ordinary chattels. Sky Petroleum then shows that commercial scarcity can make goods functionally irreplaceable even though they are not unique in an aesthetic sense. The lesson is that uniqueness is not metaphysical; it is remedial. The question is whether money enables the claimant to obtain the promised performance or an equivalent substitute.

The second family concerns third-party and nominal-loss cases. Beswick v Beswick is crucial after privity. Mrs Beswick, as administratrix, could enforce the deceased promisee's contractual right, although in her personal capacity she was a third party before the 1999 Act. Damages to the estate would have been merely nominal because the estate suffered no financial loss from non-payment of the annuity to her. Specific performance therefore prevented the promisor from escaping the substance of the bargain. The case is often used to show that equitable relief may vindicate performance where damages fail because of doctrinal limits on loss.

The third family concerns negative covenants and personal services. Lumley v Wagner permitted an injunction restraining an opera singer from performing elsewhere, but the court did not order her to sing for the claimant. Warner Bros v Nelson applied similar reasoning to an exclusive film services contract. Page One Records v Britton marks the boundary: an injunction will be refused where its practical effect is to compel continuation of a relationship of personal confidence. This is an important distinction in problem questions. The label 'negative covenant' is not conclusive; the practical coercive effect matters.

The fourth family concerns supervision and business operations. Co-operative Insurance v Argyll Stores is the leading modern case. A covenant to keep premises open as a supermarket was not specifically enforced. The reasons included uncertainty about the standard of performance, the burden of supervision, the risk of repeated applications, the possibility of oppressive loss to the defendant, and the undesirability of enforcing a business under threat of contempt. The case should not be overstated as a rule against all continuing obligations. Courts can enforce building contracts or delivery obligations where the acts are sufficiently defined and supervision is manageable.

Finally, Araci v Fallon shows that modern courts can grant injunctions in commercial and sporting contexts where the claimant has bargained for unique performance and damages are inadequate. A jockey's promise to ride a particular horse in a particular race was not simply a labour contract in the ordinary sense; the injunction restrained riding a rival horse and protected the claimant's chance in the race. The case is a useful corrective to the simplistic proposition that personal performance is never protected. The question is whether the order crosses the line into compulsion of personal service.

See practice questions section below.

See further reading section below.