Dishonest assistance

Dishonest assistance is the principal equitable mechanism by which personal liability is imposed on a third party who has assisted a trustee or fiduciary in committing a breach of trust or fiduciary duty. It is not a claim to recover an asset, nor is it a proprietary response. It is a personal liability, typically measured by equitable compensation, imposed because the defendant has participated in another’s equitable wrong with a dishonest state of mind.

The subject sits naturally after breach of trust, equitable compensation, tracing, and knowing receipt. Those topics should now be distinguished sharply. A trustee is primarily liable for breach of trust because he owes the duty. A recipient may be liable in knowing receipt because trust property has come into his hands in circumstances affecting his conscience. A dishonest assistant need not receive any property at all. His liability depends on assistance, breach, and dishonesty. The paradigm defendant is the solicitor, accountant, director, banker, broker, agent, nominee, or corporate services provider who facilitates a misapplication of trust or fiduciary property.

The modern law is built around four requirements. First, there must be a trust or fiduciary relationship. Secondly, there must be a breach of trust or fiduciary duty by the trustee or fiduciary. Thirdly, the defendant must have assisted that breach. Fourthly, the defendant’s assistance must have been dishonest. The most difficult element is dishonesty; the most neglected in examinations is assistance. Both require careful factual analysis.

The leading authority remains Royal Brunei Airlines Sdn Bhd v Tan [1995] 2 AC 378, where Lord Nicholls recast the law away from the Baden taxonomy of knowledge and towards a single inquiry into dishonesty. Twinsectra Ltd v Yardley [2002] 2 AC 164 appeared to introduce a combined objective and subjective test, requiring the defendant to appreciate that ordinary honest people would regard his conduct as dishonest. Barlow Clowes International Ltd v Eurotrust International Ltd [2005] UKPC 37 then confined that reading: dishonesty is assessed by reference to ordinary standards of honest conduct, applied to the defendant’s actual knowledge and beliefs about the facts. The Supreme Court’s criminal law decision in Ivey v Genting Casinos (UK) Ltd [2017] UKSC 67 has reinforced that approach across civil and criminal contexts, although dishonest assistance was already substantially there after Barlow Clowes.

For Cambridge purposes the topic is an excellent examination vehicle because it rewards doctrinal structure, precision about remedial consequences, and sensitivity to commercial context. A strong answer does not merely recite Royal Brunei, Twinsectra, and Barlow Clowes. It explains why equity treats dishonest assistance as accessory liability, why it is personal rather than proprietary, why dishonesty is not reducible to negligence, and why a defendant’s professional role may transform suspicious facts into dishonesty. The best answers also connect the topic to wider themes in the paper: conscience, fiduciary obligation, the institutional structure of the trust, the relationship between equity and commercial certainty, and the continuing problem of how far equitable liability should extend beyond the trustee.

The starting point is Barnes v Addy (1874) LR 9 Ch App 244. Lord Selborne LC identified two situations in which strangers to a trust might be made liable as constructive trustees: first, where they receive and become chargeable with trust property; secondly, where they assist with knowledge in a dishonest and fraudulent design on the part of the trustees. The first limb became knowing receipt. The second became dishonest assistance. The terminology of constructive trusteeship was historically important but is now potentially misleading. A dishonest assistant is not ordinarily a trustee in the full institutional sense. He is liable as if accountable in equity for participating in a breach, but he has not necessarily assumed trust duties, held trust property, or undertaken stewardship of a fund.

Nineteenth-century equity was cautious about extending trust liability to strangers. The trust was a proprietary and fiduciary institution; its extension to outsiders risked unsettling commercial dealings. Barnes v Addy therefore framed liability as exceptional and fault-based. The phrase dishonest and fraudulent design suggested a narrow ambit. Yet commercial frauds in the twentieth century exposed the need for a more effective accessory liability. Trust property could be dissipated with the help of banks, agents, companies, solicitors, and offshore nominees. If liability stopped at trustees and recipients, sophisticated wrongdoers could use intermediaries to insulate themselves from personal responsibility.

For much of the twentieth century the courts attempted to express the fault requirement through knowledge. The influential but ultimately unhelpful classification in Baden, Delvaux and Lecuit v Société Générale pour Favoriser le Développement du Commerce et de l’Industrie en France SA [1993] 1 WLR 509 divided knowledge into five categories: actual knowledge, wilfully shutting one’s eyes, wilfully and recklessly failing to make inquiries, knowledge of circumstances indicating the facts to an honest and reasonable person, and knowledge of circumstances putting an honest and reasonable person on inquiry. The scale was used both for receipt and assistance, but it obscured the different foundations of the two liabilities. It encouraged students and courts to ask whether the defendant had category three or category four knowledge, rather than whether the defendant’s conduct was sufficiently dishonest to attract accessory liability.

Royal Brunei marked the decisive turn. Lord Nicholls held that dishonesty, rather than knowledge as an independent category, was the touchstone. Knowledge remains evidentially crucial, because one cannot decide whether conduct was dishonest without asking what the defendant knew or believed. But the ultimate question is not whether a mental state can be fitted into a numbered Baden category. It is whether, given the defendant’s actual understanding of the transaction, his conduct fell below the standards of ordinary honest people.

Twinsectra created renewed uncertainty. Lord Hutton’s formulation was read by many as requiring the defendant not only to act contrary to ordinary standards but also to realise that ordinary honest people would regard his conduct as dishonest. That made liability harder to establish and appeared to permit a morally obtuse defendant to escape liability. Barlow Clowes corrected this by explaining that the defendant’s consciousness of transgressing ordinary standards is not necessary; the subjective element concerns knowledge of facts, not appreciation of the moral label.

The historical development is therefore from fraud, to knowledge, to dishonesty. Each stage reflects a tension between two policies. Equity must protect beneficiaries and fiduciary institutions from collusive wrongdoing. But it must not impose open-ended liability on honest commercial actors who assist transactions that later prove to involve fiduciary breach. Dishonest assistance is the compromise: serious personal liability, but only where the assistant’s conduct, judged against objective standards in light of known facts, is dishonest.

The first requirement is the existence of a trust or fiduciary relationship. The orthodox phrase is breach of trust or fiduciary duty. It is not necessary that the fiduciary be an express trustee. Directors, agents, solicitors, partners, and other fiduciaries may commit the primary equitable wrong which the defendant assists. The fiduciary setting matters because dishonest assistance is accessory liability to an equitable wrong, not a general tort of helping another person behave badly. If the primary wrong is merely a breach of contract or common law tort, dishonest assistance is not the appropriate cause of action.

The second requirement is a breach by the trustee or fiduciary. A dishonest assistant’s liability is secondary in the sense that it depends on a primary breach, but it is not merely derivative in every remedial respect. The assistant’s own wrong is his dishonest participation. It follows that the trustee need not himself have been dishonest. Royal Brunei held that the accessory’s liability turns on the accessory’s dishonesty, not on whether the trustee’s design was dishonest or fraudulent. That is an important departure from the language of Barnes v Addy. A trustee may breach through negligence, mistake, or excessive compliance with another’s instructions; an outsider who dishonestly assists that breach may still be liable.

The third requirement is assistance. Assistance is a factual and normative inquiry. The defendant must have assisted the breach, not merely stood by while it occurred. Assistance may consist of arranging transfers, preparing documents, operating bank accounts, incorporating vehicles, giving misleading assurances, authorising payments, providing professional services, or enabling the concealment or dissipation of assets. It need not be the sole or dominant cause of loss. But it must be more than incidental background conduct. In examination problem questions, always identify precisely what act or omission is said to have assisted which breach. Vague assertions that the defendant was involved in the transaction are insufficient.

The cases tell a story of refinement rather than revolution. Barnes v Addy supplied the foundation. Its language of strangers, constructive trustees, and dishonest and fraudulent design remains canonical, but it should not be read literally as a complete modern statement. The case is chiefly important for separating receipt-based liability from assistance-based liability. That distinction is still central: knowing receipt focuses on property received; dishonest assistance focuses on participation.

Royal Brunei is the modern starting point. The managing director of a travel agency misapplied airline ticket proceeds which should have been held on trust for the airline. The defendant controlled the company and caused or permitted the misapplication. Lord Nicholls rejected the view that liability depended on categorised knowledge or on the trustee’s fraudulent design. The accessory’s dishonesty was the touchstone. The decision is valuable for its insistence that honesty is assessed objectively, while taking account of the defendant’s actual knowledge and experience.

Twinsectra complicated the position. A solicitor gave an undertaking that loan money would be used only for a particular purpose. The money passed through another solicitor and was misapplied. The House of Lords divided on whether the second solicitor had acted dishonestly. Lord Hutton’s test appeared to require both objective dishonesty and subjective appreciation that the conduct was dishonest by ordinary standards. The decision generated extensive criticism because it seemed to protect the morally obtuse defendant. It also sat uneasily with Royal Brunei’s concern that honesty is not whatever the defendant chooses to treat as honest.

Barlow Clowes restored the centre of gravity. Offshore companies and investment fraud provided the context. The Privy Council explained that Twinsectra had not introduced a requirement that the defendant must recognise his conduct as dishonest. The defendant must know the facts that make the conduct dishonest; the assessment of dishonesty is for the court by ordinary standards. This is now the governing approach. Ivey, though not a trust case, has strengthened the same two-stage analysis: ascertain the defendant’s actual knowledge or belief as to facts, then apply objective standards of honesty.

Abou-Rahmah illustrates the difficulty of applying the test to banks and commercial intermediaries. The claim failed because suspicious circumstances and poor banking practice did not establish dishonesty on the facts. It is an important warning against treating negligence, incompetence, or compliance failure as enough. In contrast, cases such as Starglade and Group Seven show that dishonesty may readily be inferred where professionals or commercial actors facilitate transactions so obviously improper that honest participation becomes implausible.

Novoship is important on remedy and causation. It confirms that dishonest assistance is not only a gateway to liability but also requires careful attention to the loss or profit for which the defendant is accountable. The assistant is not automatically liable for every consequence of a dishonest scheme merely because he was somewhere in the factual background. The liability must be connected to the breach assisted and the loss flowing from it.

The landmark cases therefore produce a coherent examination structure. Barnes v Addy supplies the conceptual categories; Royal Brunei supplies the modern liability principle; Twinsectra supplies the cautionary episode; Barlow Clowes supplies the corrected test; later Court of Appeal cases illustrate application in commercial practice. A good script should use the cases in that order, but should not allow historical formulations to override the current test.

See practice questions section below.

See further reading section below.