The Cross-Undertaking in Damages: Claiming When a Freezing Order Was Wrong

When a court grants a freezing injunction it does not do so for free. The applicant must give the court a cross-undertaking in damages — a binding promise that, if the order should never have been granted, the applicant will compensate the respondent for the loss the order caused. Freezing a company's bank accounts can stop it paying suppliers, trip its banking covenants, or sink a deal overnight. If the underlying claim then fails, that loss does not simply evaporate: it can be recovered, sometimes in very large sums, through a separate process called an inquiry as to damages.

The undertaking is the respondent's main protection against an order obtained on thin material or later shown to be unjustified. But the money is never automatic. The respondent has to ask the court to enforce the undertaking, prove that the order caused its loss, and quantify that loss on the correct legal measure. This guide explains what the cross-undertaking is, when it bites, how the inquiry as to damages works, when the court will order security to stand behind the undertaking, and how a respondent preserves and proves its claim — across England & Wales, Hong Kong, Singapore and Australia, which share the same equitable framework.

If you are facing or considering a freezing order, start with our guide to how freezing orders work. This article picks up where that one leaves off: what happens when the order turns out to have been wrong.

What the cross-undertaking is

The cross-undertaking in damages is the price of interim relief. It is a promise made to the court — not directly to the respondent — that the applicant will pay any damages the court later decides the respondent (and sometimes affected third parties) should receive because the injunction was granted. The court cannot force an applicant to give the undertaking, but it can, and routinely will, refuse the injunction unless it is offered.

The framing is judicial, not just textbook. In Cheltenham & Gloucester Building Society v Ricketts [1993] 1 WLR 1545, Neill LJ described the undertaking as "the price which the person asking for an interlocutory injunction has to pay for its grant". The same logic applies to other coercive interim orders — search orders and disclosure orders such as Norwich Pharmacal orders commonly carry undertakings of their own, because the court is granting drastic relief before the merits have been tried.

Two features matter for a respondent. First, the undertaking does not create a free-standing cause of action: you cannot sue on it like a contract. You enforce it by asking the court that granted the injunction to order an inquiry. Second, enforcement is discretionary, not mechanical — but where the court later decides the injunction should not have been granted, it is likely to enforce the undertaking unless there is good reason not to.

When the undertaking bites

The respondent's right to compensation can crystallise in several ways:

the freezing order is discharged — for example, because the applicant failed to make full and frank disclosure when applying without notice, or the order was too wide;
the underlying claim fails at trial, so with hindsight the respondent's assets should never have been frozen;
the order was wrongly obtained or the applicant abandons the claim or lets the injunction lapse.

In each situation the court asks, in substance, whether the injunction should have been granted. If the answer is no, the undertaking is engaged and the question becomes one of quantification rather than principle. A respondent who simply succeeds in having an oppressive order narrowed, without the order being set aside, is in a weaker position — the trigger is that the injunction, or the part causing the loss, ought not to have been imposed.

England & Wales: the inquiry as to damages

In England and Wales the power to grant a freezing injunction is section 37(1) of the Senior Courts Act 1981, and a freezing injunction is one of the interim remedies the court may grant under CPR Part 25. The applicant's cross-undertaking in damages forms part of the standard-form freezing injunction order, where it sits in the schedule to the order. (The example orders changed on 6 April 2025: Practice Direction 25A was revoked in the Part 25 restructure and replaced by revised model orders — including a model freezing injunction order — that now accompany Part 25.) When the order is discharged or the claim fails, the respondent applies to the same court for an inquiry as to damages — a discrete fact-finding exercise into what the order actually cost.

The measure: damages as if for breach of contract

The starting point on quantum is the contractual analogy. In F Hoffmann-La Roche & Co AG v Secretary of State for Trade and Industry [1975] AC 295, Lord Diplock explained that the assessment is made "upon the same basis as that upon which damages for breach of contract would be assessed if the undertaking had been a contract". The respondent is, in effect, compensated as though the applicant had promised not to obtain the injunction and had broken that promise.

The modern restatement is Hone v Abbey Forwarding Ltd [2014] EWCA Civ 711, [2015] Ch 309. There the freezing order had been discharged by Lewison J in 2010, once the company's underlying claims against its former directors were dismissed, and an inquiry into the directors' losses followed before Judge Pelling. The Court of Appeal confirmed that the cross-undertaking, although given to the court rather than by contract, is assessed by analogy with contractual damages — applying the ordinary principles of causation and remoteness — so that the respondent is compensated for the losses caused by the wrongly granted order.

Causation and remoteness

Because the measure tracks contract, the respondent must prove that the loss was caused by the injunction and is not too remote. The contractual remoteness rules apply by analogy, so a respondent should be ready to show that each head of loss followed naturally from the freeze, or was within the parties' reasonable contemplation, rather than being the product of some independent business difficulty. Loss that the respondent would have suffered anyway is not recoverable; the inquiry is concerned with the difference the order made.

Fortification: security behind the undertaking

An undertaking is only as good as the applicant's ability to honour it. A claimant who is impecunious, foreign, or a special-purpose vehicle may give a worthless promise. The court can therefore order fortification — security, often a payment into court or a bank guarantee, that stands behind the undertaking.

The test was settled by the Court of Appeal in Energy Venture Partners Ltd v Malabu Oil and Gas Ltd [2014] EWCA Civ 1295. There are three limbs: (i) the respondent must show a good arguable case that there is a sufficient level of risk of loss to require fortification — a real risk of loss, which does not have to be proved on the balance of probabilities; (ii) the court must be able to make an intelligent estimate of the likely amount of that loss; and (iii) the loss must be one caused by the grant of the injunction. The often-quoted "real risk plus an intelligent estimate" shorthand is accurate, but the causation limb matters too.

Fortification is closely related to, but distinct from, an order for security for costs: both require a party to put up money to stand behind a future liability, but fortification protects the respondent's substantive losses from the order, not the costs of the litigation. A respondent who fears an applicant cannot pay should raise fortification early, ideally at the return date.

Third-party losses

A freezing order does not only affect the respondent. Banks and other third parties served with the order must, with notice of it, do what they reasonably can to preserve the frozen asset. The leading authority is Z Ltd v A-Z and AA-LL [1982] QB 558, in which the Court of Appeal examined the effect of a Mareva injunction on innocent third parties such as banks. It underpins the standard practice that the applicant gives a separate undertaking to compensate notified third parties for the reasonable costs and expenses of complying with the order — a protection distinct from enforcement steps against third parties such as charging orders and third-party debt orders.

A related but separate problem arises where the frozen assets are said to belong to someone other than the respondent. That is governed by SCF Finance Co Ltd v Masri (No 1) [1985] 1 WLR 876, where Lloyd LJ held that assets apparently belonging to a third party should not be caught without evidence that they are in truth the respondent's, and the court will resolve the ownership dispute. A third party caught in this way will want to raise its position promptly.

Delay and the respondent's conduct

Enforcement of the undertaking is discretionary, and the respondent's own conduct can reduce or defeat the claim. Unreasonable delay in applying for an inquiry, a failure to mitigate, or conduct that contributed to the loss can all count against a respondent. The practical lesson is to move promptly once the order is discharged or the claim fails, and to keep a clean record of the steps taken to limit the damage.

Hong Kong

Hong Kong applies the same equitable framework. The power to grant a Mareva (freezing) injunction is found in section 21L of the High Court Ordinance (Cap. 4); section 21M of the same Ordinance provides for interim relief in aid of foreign proceedings. The model Mareva order, including the applicant's undertaking in damages, appears in Practice Direction 11.2 (Mareva Injunctions and Anton Piller Orders).

Hong Kong courts require a cross-undertaking in damages in all interlocutory injunction applications save in very special circumstances, and they approach fortification in the same way as the English courts — looking at the likelihood of significant loss and the applicant's ability to make it good. The English authorities on the measure of damages, fortification and third-party losses are persuasive and routinely followed, so a respondent in Hong Kong can expect the inquiry to proceed on the contractual-analogy basis described above.

Singapore

Singapore likewise recognises the undertaking as to damages, and its fortification, as conditions of interlocutory injunctive relief. The undertaking is required as a matter of practice under the Rules of Court 2021, with the standard form reflected in the Supreme Court Practice Directions 2021, and the Singapore courts apply the same Hoffmann-La Roche measure on any inquiry as to damages.

The leading recent authority on fortification is Parastate Labs Inc v Wang Li [2023] SGCA 27, in which the Court of Appeal addressed what a court should do where there is inadequate evidence that the applicant can meet its undertaking. The court held that the principled response is to order adequate fortification of the undertaking, rather than to halve the quantum of the injunction. For a respondent, the message is the same as in England: if you doubt the applicant's ability to pay, press for fortification supported by an intelligent estimate of your likely loss, rather than accepting a diluted order.

Australia

In Australia a freezing order is normally granted only on the applicant giving the "usual undertaking as to damages". In the Federal Court the freezing-order power is rule 7.32 of the Federal Court Rules 2011, supported by the Freezing Orders Practice Note (GPN-FRZG), which records that the applicant will ordinarily be required to give the usual undertaking and that the court may require security if the applicant may not have sufficient assets within the jurisdiction to meet it. The regime is harmonised across Australian courts, so the equivalent in New South Wales is found in the Uniform Civil Procedure Rules (Part 25) and the associated practice arrangements. Confirm the exact rule for the court you are in.

On third parties, the leading High Court authority is Cardile v LED Builders Pty Ltd (1999) 198 CLR 380, which addresses the circumstances in which a freezing order may reach assets held by, or affect, persons other than the defendant. As in the other jurisdictions, the undertaking as to damages — and, where appropriate, security to back it — is the respondent's principal protection if the order should not have been made.

Preserving and proving your loss: practical steps for a respondent

The inquiry as to damages is a documentary exercise. A respondent who keeps good records from the moment the order is served is far more likely to recover. The practical sequence is:

Capture the loss as it happens. Keep contemporaneous records of every consequence of the freeze — cancelled or delayed contracts, lost financing, default interest, additional bank charges, demands from suppliers, and management time diverted to dealing with the order.
Press for fortification early. If you doubt the applicant can pay, raise fortification at the return date, with an intelligent estimate of your likely loss and evidence of the real risk to your business.
Get the trigger on the record. Make sure the order discharging the injunction, or the judgment dismissing the claim, records the basis on which the injunction fell away — this is what engages the undertaking.
Apply promptly for an inquiry. Ask the same court to order an inquiry as to damages, and do so without undue delay; delay and failure to mitigate can both reduce recovery.
Prove causation and quantum. Assemble a witness statement (or affidavit, where the court requires sworn evidence) exhibiting the underlying documents, supported where the sums are substantial by accountancy or expert evidence linking each head of loss to the order. A court fee applies to issuing the application — check the current figure for your court before filing.
Plead general as well as special damages. Remember that distress, reputational harm and business disruption can be recoverable, not only quantifiable cash losses.

The threshold question is rarely whether the undertaking exists — it almost always will, because no responsible court grants a freeze without it. The real contest is causation and amount: showing, head by head, what the order actually cost and that the loss is not too remote.

If you have been served with a freezing order, or one you obtained has been discharged and you are now facing a claim on your undertaking, the issues turn on the precise terms of the order and the evidence of loss. Ask CommonBench's Legal Chat to talk through where the cross-undertaking, fortification and an inquiry as to damages fit in your situation, and what to gather before you go to court.

This guide covers general principles of the cross-undertaking in damages across England & Wales, Hong Kong, Singapore and Australia, and is not legal advice. Procedure, fees and authority differ between courts and change over time. Check the current rules for your specific court before applying to enforce an undertaking or resisting a freezing order.