This guide is maintained as a current resource for September 2026 and covers only the laws of England and Wales. Information is for general guidance, not legal advice. Consult a qualified solicitor for advice specific to your situation.
Explains how courts assess breach of duty in public liability claims in England and Wales, including the reasonable person test, foreseeability, risk factors, statutory duties under the Occupiers' Liability Act 1957 and practical guidance for claimants and defendants.
In public liability claims in England and Wales, establishing that the defendant owed the claimant a duty of care is only the first step. The claimant must also show that the defendant breached that duty - that is, failed to meet the legal standard of care owed - and that the breach caused the injury or loss. How courts assess whether a breach of duty has occurred involves established negligence principles under common law and statutory provisions such as the Occupiers' Liability Act 1957. This article explains the legal framework, the tests courts apply, relevant factors taken into account, and practical implications for claimants and defendants.
The Role of Breach of Duty in Public Liability Claims
Once it is established that the defendant owed a duty of care - for example, under the Occupiers' Liability Act 1957, which imposes a duty to take reasonable care to ensure visitors are reasonably safe on premises - the next stage is to assess whether the defendant's conduct fell below the relevant standard of care. A finding of breach means the defendant did not do what a reasonable person would have done in the circumstances.
The assessment of breach is ordinarily objective: it focuses on what a hypothetical reasonable person in the defendant's position would have done, rather than the defendant's personal intentions or beliefs.
Objective Standard: The Reasonable Person Test
The central question in assessing breach is whether the defendant's conduct met the standard of care expected in the circumstances. This is judged by applying the reasonable person test:
- The court asks whether a reasonable person of ordinary prudence would have taken the steps the defendant took - or would have taken additional precautions - to prevent the risk of harm.
- If the defendant's actions fall below this standard, a breach of duty is likely to be found.
The reasonable person standard is context‑sensitive. It considers the nature of the activity, the foreseeability of harm, and the likelihood and seriousness of injury. The standard is not perfection; it reflects what is ordinary, reasonable behaviour in the circumstances.
Foreseeability of Harm and Risk Assessment
A key component of breach assessment is foreseeability: whether a reasonable person would have foreseen the risk of harm arising from the defendant's conduct or omission. Courts examine:
- Whether the harm was a reasonably foreseeable consequence of the defendant's actions or omissions; and
- Whether reasonable precautions could have prevented that harm.
If a risk is obvious or likely to occur, a defendant may be expected to take greater steps to mitigate it. Conversely, where a risk is highly unlikely or unforeseeable, courts may conclude there was no breach.
Factors Considered in the Breach Assessment
When deciding if the defendant breached the duty of care, courts consider several factors:
1. Probability of Harm
Courts evaluate how likely it was that the defendant's conduct would cause harm. A higher probability of harm generally requires more rigorous precautions.
2. Severity of Potential Injury
The seriousness of potential injury influences what precautions a reasonable defendant would take. Risks that could result in serious harm often demand stronger preventive measures.
3. Cost and Practicability of Precautions
Courts may balance the cost and difficulty of taking precautions against the risk of harm. If reasonable and proportionate steps could reduce foreseeable risk at a modest cost, failing to take those steps is more likely to be considered a breach.
4. Characteristics of Visitors or Claimants
Under the Occupiers' Liability Act 1957, courts may consider the nature of the visitor. For instance, higher standards of care are expected where children, who are less likely to appreciate risk, are present.
5. Nature of the Premises
The type of premises and activities conducted there can affect the standard of care. Busy commercial environments may require stricter maintenance and inspection regimes than quiet private spaces.
6. Warnings and Notices
Warning signs or notices about hazards may reduce the defendant's liability, but they are effective only if they are sufficient to let the visitor be reasonably safe. Inadequate warnings may still amount to a breach.
Standards for Specific Situations
Although the reasonable person test is objective, courts recognise contextual variations:
- Professionals may be compared to a reasonable person with similar skills in their field. For example, in specialised circumstances, a higher standard may be required.
- Children's conduct is sometimes judged against that of a reasonable child of similar age, rather than an adult, when assessing breach in certain fact patterns.
These adjustments ensure fairness in contexts where the ordinary “reasonable adult” standard would be inappropriate.
Evidence and Burden of Proof
In negligence claims, the burden of proof is on the claimant to show, on the balance of probabilities, that the defendant breached the duty of care owed. Evidence may include:
- Photographs or video of the hazard;
- Maintenance and inspection records;
- Witness statements about how the accident occurred;
- Expert opinions on what a reasonable defendant would have done.
In some circumstances, where the facts strongly suggest negligence, claimants may rely on the doctrine of res ipsa loquitur (the facts speak for themselves), although this is less common.
Defences and Contributory Negligence
Even if a court finds a breach, the defendant may raise defences such as volenti non fit injuria (voluntary acceptance of risk) or that the claimant contributed to their own harm. Where contributory negligence is proven, the compensation awarded may be reduced proportionately.
Practical Implications
For claimants, understanding how breach of duty is assessed helps in gathering strong evidence to show what a reasonable occupier, property owner or authority should have done to prevent harm. For defendants, demonstrating reasonable precautions, effective maintenance systems, and clear warnings can support arguments that there was no breach of duty.
Key Takeaways
In public liability claims in England and Wales, courts assess breach of duty by comparing the defendant's conduct against the objective standard of a reasonable person. Key factors include the foreseeability and likelihood of harm, the severity of potential injury, the cost and practicability of precautions, the characteristics of visitors, and the nature of the premises. Statutory duties under legislation such as the Occupiers' Liability Act 1957 are applied in context, with courts balancing competing considerations to determine whether the defendant failed to take reasonable care. Thorough evidence and clear articulation of risk and response are essential to succeed in or defend against a breach of duty claim.
