Hedley Byrne principle CASES

In English law, the Hedley Byrne principle allows recovery of pure economic loss caused by a negligent statement or service where the defendant assumed responsibility to the claimant and the claimant reasonably relied on that assumption. It originates in Hedley Byrne & Co Ltd v Heller & Partners Ltd [1964] AC 465, which recognised a duty of care for advice and information given in circumstances importing responsibility—subject to effective disclaimers.

Definition and principles

A duty arises where: (i) the defendant undertakes, or is taken to have undertaken, responsibility towards the claimant for careful advice or information (often because of skill, expertise, or the context of the dealings); (ii) the defendant knows, or ought to know, that the claimant will rely on it for a particular purpose; and (iii) the claimant actually and reasonably relies on it, suffering loss. The touchstone is assumption of responsibility, not mere foreseeability. A clear and effective disclaimer can negate the duty.

Elements in practice

• Undertaking/assumption: may be express (engagement, certificate) or implied from the relationship (professional advice, one-off guidance knowingly relied upon). Casual statements and obvious “no-duty” contexts usually do not qualify.
• Reliance and reasonableness: reliance must be of the kind the defendant contemplated; the claimant’s sophistication, the availability of checks, and industry practice matter.
• Disclaimers: effective wording (e.g., “without responsibility”) can prevent a duty arising. In business-to-business settings, exclusion of negligence for economic loss must satisfy the UCTA reasonableness test; for consumers, the Consumer Rights Act 2015 imposes tougher controls.

Advice vs information and scope of duty

Courts distinguish between giving advice (guiding the decision overall) and supplying information (a limited input to the decision). Scope-of-duty rules limit recovery to losses that materialise from the very risk the defendant undertook to guard against. Even where a duty exists, the claimant cannot recover losses outside that scope.

Common contexts

• Professional services: solicitors, accountants, valuers and financial advisers providing opinions or reports for identifiable clients and purposes.
• One-off assurances: a bank or agent providing a reference or confirmation knowing it will be relied upon for a specific transaction.
• Third-party beneficiaries: in some situations (e.g., wills work), responsibility can extend to intended beneficiaries where justice requires it and reliance is inherent.

What does not qualify

• General statements to the world at large (without a special relationship) and mere “puff” or sales talk.
• Opposing-party advisers: professionals ordinarily owe duties only to their own client; assumption of responsibility to the other side is exceptional.
• Pure foreseeability claims: without responsibility and reliance, there is no duty for economic loss.

Legal implications

• Duty turns on responsibility and reliance; breach uses the professional standard (with logical scrutiny of expert opinion); causation and scope confine recovery to losses tied to the risk undertaken.
• Disclaimers/exclusions must be clear and (where applicable) reasonable under statute; they cannot exclude liability for death or personal injury caused by negligence.
• Measure of loss is typically the difference between the claimant’s actual position and the position if competent advice/information had been given for that purpose.

Practical importance

For claimants, pinpoint the undertaking (engagement terms, certificates, emails), the specific decision and purpose, and why reliance was reasonable; obtain focused expert evidence on what competent advice would have been. For defendants, highlight disclaimers, the defined audience and purpose, the claimant’s own expertise and checks, and scope-of-duty limits that exclude market or collateral losses.

See also: Negligent misstatement; Assumption of responsibility; Pure economic loss; UCTA reasonableness; Consumer Rights Act 2015; Scope of duty; Advice vs information; Valuers’ negligence.