Tort Law

The Neighbour Principle: Donoghue, Duty of Care & Your Exam

Lord Atkin's neighbour principle is the foundation of modern negligence, here's exactly how it works and how to use it under exam pressure.

Lord Atkin's neighbour principle is one of the most-quoted passages in English law, but students often treat it as a historical curiosity rather than a living analytical tool. That's a mistake. Understanding what Atkin actually said, why it mattered, and how courts moved beyond it is the difference between a 2:2 tort answer and a first.

What Atkin Actually Said

The case is [Donoghue v Stevenson [1932] AC 562](https://www.getcaselaw.com/case-library/7c984837-f0b3-4afc-a73f-3ec96f6e4756). Mrs Donoghue drank ginger beer from an opaque bottle. A decomposed snail was allegedly inside. She sued the manufacturer, Stevenson, in negligence. The problem: she had no contract with him. Her friend bought the drink. So she had to argue the manufacturer owed her a duty of care directly in tort.

The House of Lords held, by a 3-2 majority, that he did. And Lord Atkin's reasoning gave English tort law its conceptual spine:

"You must take reasonable care to avoid acts or omissions which you can reasonably foresee would be likely to injure your neighbour. Who, then, in law is my neighbour? The answer seems to be persons who are so closely and directly affected by my act that I ought reasonably to have them in contemplation as being so affected when I am directing my mind to the acts or omissions which are called in question."

Two things matter here. First, the test is one of reasonable foreseeability. Not actual foresight, not certainty. Could a reasonable person in the defendant's position have foreseen that someone like the claimant might be harmed?

Second, Atkin used the word "neighbour" in a legal, not geographical, sense. Your neighbour in law is anyone sufficiently proximate to you that you ought to keep them in mind. That idea of proximity is doing real work, even in 1932.

Why It Was Revolutionary

Before Donoghue, duties of care in negligence were recognised only in specific, established categories: employer-employee, road users, occupiers in limited circumstances. The courts had not articulated a general principle that could extend to new fact patterns. If your situation did not fit a recognised category, you were stuck.

Atkin's neighbour principle changed that. It gave courts a framework to ask, in a novel situation, whether a duty ought to exist. It was not a fixed list. It was a test.

The immediate practical consequence was huge: manufacturers now owed a duty to the end consumer of their products. But the wider implication was bigger still. Courts could use the neighbour principle to recognise duties in completely new contexts as society changed.

The Problem: From Principle to Chaos

The neighbour principle worked well for straightforward physical injury cases. But as negligence expanded, courts started applying it too liberally. Anns v Merton London Borough Council [1978] AC 728 is the key example. Lord Wilberforce in Anns proposed a two-stage test: first, was there sufficient proximity and foreseeability? Second, were there policy reasons to limit the duty? If you passed stage one, a duty existed unless there was a reason to deny it. The burden was on restriction, not on establishment.

The result was an explosion of negligence claims, including many for pure economic loss and negligent statements, that courts later found difficult to manage. By the late 1980s, the House of Lords was in retreat.

Murphy v Brentwood District Council [1991] AC 398 overruled Anns. The court rejected the two-stage approach as too expansive. And in Caparo Industries plc v Dickman [1990] 2 AC 605, the House of Lords articulated the three-stage test that still governs novel duty of care questions today.

The Caparo Test: What You Actually Apply

Caparo is the framework you need for your exam. Lord Bridge set out three requirements for a duty of care to arise in a novel situation:

1. Damage was reasonably foreseeable
2. There was a relationship of proximity between claimant and defendant
3. It is fair, just and reasonable to impose a duty

Foreseeability alone is not enough. That is the lesson Anns taught the hard way. You need all three stages, and the third stage is where courts do the heavy policy lifting.

Caparo itself involved auditors (Dickman) who prepared accounts for a company (Fidelity). Caparo Industries bought shares relying on those accounts and suffered loss when Fidelity turned out to be in poor financial shape. The question was whether the auditors owed Caparo a duty of care.

The House of Lords said no. The accounts were prepared for the purposes of the existing shareholders as a body, not for potential investors or for anyone who might rely on them to buy shares. There was no proximity between the auditors and Caparo in the relevant sense. Foreseeability of loss was not enough.

How the Neighbour Principle Fits Into Caparo

Atkin's principle essentially maps onto the first two Caparo stages. Reasonable foreseeability is there explicitly. The idea of persons "closely and directly affected" maps onto proximity. What Caparo added, and what Anns had minimised, is the third, independent requirement: fairness, justice and reasonableness.

So the neighbour principle did not disappear. It was refined, contextualised and supplemented. Think of Atkin as the foundation and Caparo as the structure built on top.

Established Categories Still Matter

One thing students miss: Caparo does not apply to established duty relationships. If your facts involve a road traffic accident, an employer injuring an employee, or a manufacturer injuring a consumer through a defective product, the duty is already recognised. You do not run through Caparo from scratch every time.

Caparo is for novel situations. Lord Bridge made this clear: in familiar situations, the court simply applies established precedent. In new situations, it proceeds incrementally by analogy, using the three-stage test as a guide.

This matters in the exam. If a problem question gives you a manufacturer and a consumer injured by a defective product, the duty of care analysis is short: Donoghue establishes the category. Move on to breach and causation. If the facts are genuinely novel, that is when you need the full Caparo analysis.

Particular Traps: Omissions, Third Parties and Economic Loss

The neighbour principle was formulated in the context of a positive act causing physical injury. Courts have always been more cautious about extending it to three situations:

Pure omissions. English law does not generally impose liability for failing to act, even if harm was foreseeable. There is no duty to rescue a stranger drowning in a shallow pond. The exceptions are narrow: special relationships, assumption of responsibility, the defendant creating the danger. This is why Goldman v Hargrave, where the Privy Council considered a landowner's liability for the spread of a fire he had failed to extinguish, is worth knowing. [Goldman v Hargrave [1967] 1 AC 645](https://www.getcaselaw.com/case-library/2de6b602-0fbb-4e84-8b76-24804347ca0a) found liability in an occupier context based on actual knowledge of the danger and the capacity to abate it. The foreseeability and proximity analysis was fact-specific.

Third party acts. You are not generally liable for the independent acts of a third party who causes harm. Dorset Yacht Co v Home Office [1970] AC 1004 is the leading case where the Home Office was found liable when borstal boys under the supervision of officers escaped and damaged a yacht. The court found sufficient proximity and control to impose a duty. But the default remains: no liability for third party acts unless there is special control or assumption of responsibility.

Pure economic loss. Atkin was dealing with physical injury. Where the claimant has suffered only financial loss, with no accompanying property damage or personal injury, the courts are very reluctant to impose a duty. The main exception is negligent misstatement following Hedley Byrne & Co Ltd v Heller & Partners Ltd [1964] AC 465, where the defendant assumed responsibility for the accuracy of a statement and the claimant reasonably relied on it. This is an important qualification to the neighbour principle's apparent breadth.

How to Structure Your Answer

Here is a clean approach for a negligence duty of care question in an LLB or SQE problem.

Step 1. Ask whether the facts fall into an established duty category. Physical harm from a manufacturer's product, road traffic, employer-employee: if yes, cite the authority and move on.

Step 2. If novel, apply Caparo:

• Foreseeability: would a reasonable person in the defendant's position have foreseen damage to a person in the claimant's position?
• Proximity: is there a sufficiently close relationship? Think physical closeness, relational closeness, assumption of responsibility, or control.
• Fair, just and reasonable: this is where you discuss floodgates, the vulnerability of the claimant, whether liability would lead to defensive behaviour, whether other remedies exist.

Step 3. Flag the type of loss. Pure economic loss or omission? Say so, explain why the courts are cautious, and analyse whether an exception applies.

Step 4. Keep the neighbour principle in your analysis. It contextualises the foreseeability and proximity stages. Examiners notice when you show doctrinal awareness rather than just reciting Caparo mechanically.

The Incremental Approach

One thing Caparo emphasised, and which gets underplayed in many textbooks, is the incremental development of duty. Lord Bridge said the court should move forward in novel situations by analogy with decided cases, cautiously, not by applying the three-stage test as a general licence to create new duties.

This means when you are arguing for a duty in a genuinely novel fact pattern, you should look for the closest analogous decided case and argue that the new situation is sufficiently similar. If the gap is too wide, courts will refuse the duty even if foreseeability and proximity are arguably present.

This also explains why the neighbour principle, with its apparent generality, has never been used to create unlimited liability. The incremental method is the brake.

A Note on the SQE

For SQE1, duty of care questions test your ability to identify whether a duty is established or novel, apply Caparo correctly to novel facts, and spot the warning signs: pure economic loss, omissions, third-party liability. You will not be asked to write essays on the history of the neighbour principle. You will be asked to select the correct duty analysis for a set of facts in a single best answer format.

Know your categories. Know Caparo. Know the exceptions. And know that Donoghue underpins all of it.

You can read the full text of Donoghue v Stevenson and trace how the neighbour principle reads in context. For any case you need to track down quickly, the Caselaw case finder will get you there.