Introduction
In the law of contract, commercial parties often seek to pre-determine their own remedies for breach. One of the most common methods of achieving this is through the inclusion of a liquidated damages clause. Such a clause specifies a fixed or determinable sum of money that is to be paid by the breaching party upon the occurrence of a particular breach. The primary attraction of these clauses is the certainty they provide, saving the parties the time and expense of proving actual loss in court. However, English law has long maintained a supervisory jurisdiction over such clauses through the common law rule against penalties. This essay will explain the legal principles governing liquidated damages clauses in England and Wales. It will outline the traditional test established in the early twentieth century before analysing the significant restatement and modernisation of the law by the Supreme Court. It will be shown that while the rule against penalties has been preserved, its focus has shifted from a narrow enquiry into the estimation of loss to a broader assessment of the innocent party’s ‘legitimate interest’ in performance.
The Purpose and Function of Liquidated Damages
When a contract is breached, the usual remedy is an award of unliquidated damages, where the court assesses the loss suffered by the innocent party in accordance with principles laid down in cases like Hadley v Baxendale (1854) 9 Exch 341. This can be an uncertain, complex, and expensive process, requiring the claimant to prove the extent of their financial loss. A liquidated damages clause is intended to bypass this process. The parties agree in advance what the damages will be for a specified breach.
The key benefit is commercial certainty. As explained by Poole (2021), both parties can understand their potential liability from the outset, which allows them to manage risk and price the contract accordingly. If a breach occurs, the innocent party is entitled to the specified sum without needing to prove actual loss; equally, their claim is generally limited to that sum, even if their actual loss is greater (Poole, 2021). This provides a straightforward remedy, avoids disputes over the quantum of loss, and can preserve the commercial relationship between the parties. However, this freedom of contract is not absolute. The courts have historically been concerned that a powerful contracting party might impose an oppressive clause on a weaker party, which has less to do with compensation and more to do with compelling performance through the threat of punishment. This concern is addressed by the rule against penalties.
The Traditional Approach: The Dunlop Test
For a century, the leading authority on the distinction between a valid liquidated damages clause and an unenforceable penalty clause was the House of Lords decision in Dunlop Pneumatic Tyre Co Ltd v New Garage and Motor Co Ltd [1915] AC 79. In this case, Lord Dunedin famously set out a series of tests to guide the courts. The fundamental question was whether the clause was a "genuine covenanted pre-estimate of damage" or, by contrast, a provision designed to act "in terrorem" of the offending party to force them to perform (at p. 86). A clause found to be the latter was a penalty and would not be enforced by the courts, leaving the innocent party to prove their actual loss as if the clause had never existed.
Lord Dunedin articulated four principles to assist in this task:
- A clause will be a penalty if the sum stipulated is "extravagant and unconscionable" in amount compared to the greatest loss that could possibly have been proved to have followed from the breach.
- A clause will be a penalty if the breach consists only in not paying a sum of money, and the sum stipulated is a sum greater than the sum which ought to have been paid.
- There is a presumption (but no more) that a clause is a penalty when a "single lump sum is made payable by way of compensation, on the occurrence of one or more or all of several events, some of which may occasion serious and others but trifling damage".
- It is no obstacle to the sum being a genuine pre-estimate of damage that a precise pre-estimation is almost an impossibility.
These principles provided the framework for analysis for many decades. The central focus was on the compensatory character of the clause. If it appeared to be a genuine attempt to estimate likely financial losses, it would be upheld. If it was aimed at deterring breach by setting an amount clearly in excess of any possible loss, it would be struck down as a penalty.
The Modern Restatement: Cavendish Square v Makdessi
The law on penalties was substantially clarified and restated by the Supreme Court in the conjoined appeals of Cavendish Square Holding BV v Talal El Makdessi and ParkingEye Ltd v Beavis [2015] UKSC 67. The Court confirmed that the penalty rule was a long-standing and important principle of English law, but held that the "genuine pre-estimate of loss" test from Dunlop was outdated and unhelpful in many modern commercial contexts. The Court formulated a new test, asking whether the impugned provision is a secondary obligation that imposes a detriment on the contract-breaker "out of all proportion to any legitimate interest of the innocent party in the enforcement of the primary obligation" (at [32]).
This new test involves two key stages. The first question is whether the clause is a 'secondary obligation'. A primary obligation is a standalone contractual duty (e.g., to build a house). A secondary obligation is one that is triggered only by a breach of a primary obligation (e.g., to pay £1,000 for every week of delay in completing the house). The penalty rule is only engaged by secondary obligations.
If the clause is a secondary obligation, the second stage of the test is to assess whether it is penal. This requires identifying the innocent party’s ‘legitimate interest’ in the performance of the primary obligation. This interest is not necessarily limited to compensation for financial loss. As McKendrick (2022) notes, the decision widens the scope of interests that the law will protect. For instance, in Cavendish, Mr Makdessi sold a controlling stake in a media company to Cavendish. The contract provided that if he breached certain non-compete clauses, he would lose his entitlement to two final instalments of the price and be forced to sell his remaining shares at a price that excluded goodwill. The Supreme Court held that these clauses were not penalties. They were not genuine pre-estimates of loss, but Cavendish had a legitimate interest in protecting the goodwill of the business they had just bought, and the clauses were a reasonable way of achieving this.
Similarly, in ParkingEye, Mr Beavis overstayed the two-hour free parking period in a retail park car park and was charged £85. He argued this was a penalty, as ParkingEye had suffered no financial loss. The Supreme Court disagreed, holding that ParkingEye had a legitimate interest in managing the car park efficiently for the benefit of the retailers and their customers, and in generating income from overstaying motorists, which was part of its business model. The £85 charge was not extravagant or unconscionable in pursuit of those interests.
The Consequences of the Modern Test
The restatement in Cavendish marks a significant shift in the law. While the Dunlop tests can still be useful guides in simple cases where compensation for loss is the only relevant interest, the primary test is now the broader one of legitimate interest and proportionality. The practical result is that it is now considerably more difficult to have a clause in a commercial contract struck down as a penalty. The courts have shown an increased reluctance to interfere with the freedom of contract, particularly where parties are properly advised and have comparable bargaining power (McKendrick, 2022). The phrase "out of all proportion" sets a high bar for the party challenging the clause. The modern law, therefore, gives more weight to the parties' own agreed allocation of risk, reflecting the realities of commerce where a party may have a legitimate commercial interest in securing performance that goes far beyond simple financial compensation.
Conclusion
The law governing liquidated damages has undergone a significant evolution. For a century, the courts applied the tests from Dunlop, focusing narrowly on whether a clause was a genuine pre-estimate of financial loss or a deterrent. While this provided a degree of protection against oppressive terms, it was often criticised as being out of step with commercial practice. The Supreme Court’s decision in Cavendish Square v Makdessi has modernised the doctrine. The rule against penalties is retained, but its application has been reframed. The modern test, which focuses on whether a clause is out of all proportion to the innocent party’s legitimate interest in performance, is more flexible and commercially-minded. It recognises that a party may have valid reasons for including a stringent damages clause that are not purely compensatory. As a result, commercial parties now have greater freedom to stipulate their own remedies for breach, with the courts intervening only where a clause is truly exorbitant and unconscionable.
References
McKendrick, E. (2022) Contract Law. 15th edn. London: Palgrave Macmillan.
Poole, J. (2021) Textbook on Contract Law. 15th edn. Oxford: Oxford University Press.
Cavendish Square Holding BV v Talal El Makdessi and ParkingEye Ltd v Beavis [2015] UKSC 67.
Dunlop Pneumatic Tyre Co Ltd v New Garage and Motor Co Ltd [1915] AC 79.
Hadley v Baxendale (1854) 9 Exch 341.
