The Tort of Negligence in UK Law

Negligence is the most important tort in English law. It establishes liability for harm caused by the breach of a legal duty to take care. The modern law of negligence developed from the landmark case of Donoghue v Stevenson (1932), which established the neighbour principle as the foundation of a general duty of care. Negligence claims require proof of three elements: duty of care, breach of duty, and damage caused by the breach. Each element must be established on the balance of probabilities for a claim to succeed. The tort of negligence has expanded dramatically since Donoghue v Stevenson and now governs liability for personal injury, property damage, economic loss, and psychiatric harm in a wide range of circumstances.

Duty of Care

The existence of a duty of care is a question of law determined by the courts. Following Caparo Industries plc v Dickman (1990), the courts apply a three-stage test: whether the harm was reasonably foreseeable; whether there was a relationship of proximity between the parties; and whether it is fair, just, and reasonable to impose a duty. Duties have been established in numerous categories, including doctor-patient, solicitor-client, employer-employee, manufacturer-consumer, and school-pupil relationships. Novel categories require incremental development by analogy with established duties. The courts have been cautious about extending duties of care in novel situations, particularly where the defendant is a public authority exercising statutory functions or where the claimant’s loss is purely economic. The Caparo test provides a structured framework for determining whether a duty exists, balancing the need for compensation against the fear of indeterminate liability.

Breach of Duty

Breach is assessed by the objective standard of the reasonable person. The defendant must conform to the standard of care expected of a reasonable person in the circumstances. Professional defendants are judged by the standard of the ordinary skilled person in that profession, as established in Bolam v Friern Hospital Management Committee (1957). A doctor must act in accordance with a practice accepted as proper by a responsible body of medical opinion. The likelihood of harm, the seriousness of potential injury, the cost of precautions, and the social utility of the defendant’s activity are weighed in determining whether the defendant has fallen below the required standard. The lower the probability of harm and the greater the cost of precautions, the less likely a finding of breach.

Causation and Remoteness

The claimant must prove both factual and legal causation. The but-for test determines factual causation: would the damage have occurred but for the defendant’s breach? In material contribution cases, such as Fairchild v Glenhaven Funeral Services Ltd (2002), the courts have relaxed the strict but-for test where multiple defendants have each contributed to the harm and the precise cause cannot be determined. Legal causation requires that the damage not be too remote. The test from The Wagon Mound (No 1) (1961) asks whether the type of damage was reasonably foreseeable. If the damage is of a different type from what was foreseeable, the defendant is not liable. Intervening acts may break the chain of causation if they are unforeseeable and independent.

Special Categories of Harm

Negligence law treats different types of harm distinctly. Pure economic loss — financial loss not consequent on physical injury or property damage — is generally irrecoverable in negligence, as established in Spartan Steel & Alloys Ltd v Martin & Co (Contractors) Ltd (1973). Liability for pure economic loss exists only where there has been an assumption of responsibility by the defendant, as in Hedley Byrne & Co Ltd v Heller & Partners Ltd (1964) for negligent misstatement. Psychiatric harm is subject to special control mechanisms: the claimant must prove a recognised psychiatric illness and satisfy proximity requirements, with different rules for primary victims (directly involved) and secondary victims (witnesses). Public authority liability is constrained by policy considerations, and the courts are reluctant to impose duties of care that would interfere with the performance of statutory functions.

Defences and Remedies

The principal defence to negligence is contributory negligence, which apportions damages according to the claimant’s share of responsibility under the Law Reform (Contributory Negligence) Act 1945. Volenti non fit injuria—voluntary assumption of risk—is a complete defence but is narrowly applied and requires full knowledge and free acceptance of the risk. Illegality (ex turpi causa) may bar recovery where the claimant was engaged in criminal conduct. Damages aim to restore the claimant to the position they would have been in but for the tort. Damages are calculated as a lump sum, with heads of damage including pain and suffering, loss of amenity, past and future financial losses, and medical expenses.