A breach of duty of care in PI is the failure of a professional to meet the standard of care that the law imposes on someone offering services of that kind. It is the central allegation in most professional negligence claims. UK courts assess the standard by reference to what a reasonably competent professional in the same field would have done — most often under the Bolam/Bolitho framework.
What breach of duty of care means in PI insurance
In tort, a duty of care arises where one person undertakes services that another foreseeably relies on, and the relationship is sufficiently proximate for the law to recognise a duty. For most regulated professionals — solicitors, accountants, surveyors, architects, consultants, financial advisers, IT contractors — that duty exists in respect of clients and, in some circumstances, identifiable third parties.
The duty is not a guarantee of correct outcomes. It is a duty to act with the reasonable skill and care of a competent professional in the same field. Breach is established where the professional’s conduct falls below that standard. The court does not ask whether a perfect professional would have done better; it asks whether the defendant’s conduct was within the range of conduct accepted as proper by a responsible body of professional opinion (Bolam v Friern Hospital Management Committee [1957]), subject to the rationality check in Bolitho v City and Hackney Health Authority [1997]. Bolitho holds that the body of professional opinion relied on must itself withstand logical analysis.
For PI insurance purposes, a breach of duty of care allegation is the primary trigger for the insuring clause. UK PI policies typically respond to civil liability arising from the professional services, with negligence the most common species. See tort vs contract claim for the relationship between these two routes to liability.
How breach of duty of care works in practice
When a claim is intimated, the claimant must establish four elements: duty, breach, causation and loss. The duty element is rarely contested where a professional was engaged for advice or services. The breach element is where most professional negligence litigation lives.
Several practical features follow:
- Expert evidence drives the breach question. Both sides instruct experts in the relevant profession to opine on what a reasonably competent practitioner would have done. The judge weighs the expert evidence against the contemporaneous documents.
- Contemporaneous documents matter. File notes, attendance notes, emails, instructions, advice letters and working papers are the spine of a defence. The standard the court applies is at the time of the alleged breach, not with hindsight.
- Causation and loss are separate hurdles. A breach without causative loss does not lead to damages. PI cover responds to the legal liability arising from breach plus loss, not to breach in isolation.
- Policy response. Most UK PI wordings respond to “civil liability” or, more narrowly, “negligence”. On a civil liability wording, breaches of contract, breaches of statutory duty, and other heads of liability are also covered to the extent they arise from the professional services. On a negligence-only wording, the trigger is narrower. See civil liability extension.
Worked example
Consider a small accountancy practice in Bristol with £200,000 fee income, a £500,000 each-and-every PI limit and a £2,500 excess. The practice advises a client SME on the corporation tax treatment of a property disposal. The advice misses a structuring point that would have saved tax. HMRC accepts the return as filed; the client discovers the missed saving 18 months later when speaking to a new adviser.
The client alleges breach of the duty of care: a reasonably competent accountant advising on this transaction would have identified the alternative treatment. The claim is for £85,000 — the additional tax suffered.
The accountant’s PI insurer instructs experts. The experts agree that the alternative treatment was well known and that a competent practitioner advising on a transaction of this size should have considered it. Bolam/Bolitho is engaged: the body of professional opinion supporting the advice given would not withstand logical analysis. Breach is conceded.
Causation is also accepted (had correct advice been given, the client would have used the alternative). Quantum is agreed at £78,000 after a small discount for litigation risk. The matter settles at £80,000 plus £18,000 defence costs (outside limit). The firm pays the £2,500 excess; the insurer pays the rest.
The figures are illustrative. The structural point is that the policy responded because the allegation framed the loss as flowing from negligent professional advice — i.e. a breach of duty of care in the provision of accountancy services.
When this matters most
Advice-heavy professions. Solicitors, accountants, tax advisers, financial advisers and consultants face most of their PI claims as breach of duty allegations because the bulk of their work product is advice that can be tested with hindsight.
Design and certification work. Architects, engineers and surveyors face breach of duty claims where their design choices, inspections or certifications later prove defective. The Bolam/Bolitho test applies, but the test is overlaid with the specific standards of relevant codes, building regulations and professional guidance.
Reliance by third parties. In some cases, a duty of care extends to identifiable third parties who relied on the professional’s work — the lender on a valuation, the buyer on a survey, a known beneficiary on an estate planning instruction. These extensions of duty significantly broaden the population of potential claimants. See economic loss claim for the Hedley Byrne framework on assumption of responsibility.
Common variations and market wording
UK PI policies frame the negligence trigger in several different ways. Look for:
- “Civil liability” wording — the broadest formulation. Covers liability arising from negligence, breach of contract, breach of statutory duty, defamation (often as an extension), breach of confidence and other heads of civil liability, to the extent arising from the professional services.
- “Negligence-only” wording — narrower. Responds where the claim is for breach of duty of care in tort. A breach of contract claim may not be covered unless the same facts also amount to negligence, or unless a breach-of-contract extension is included.
- “Professional services” definition — the activities the insurer is committed to covering. A breach of duty arising from work outside this definition may not be covered. The schedule’s description of professional services should reflect the actual business.
- “Bodily injury / property damage” exclusion or carve-out — most PI wordings exclude pure bodily injury and property damage as they sit with public liability cover. Breach of duty leading to economic loss is the PI heartland; breach leading to physical damage may need careful policy mapping.
The wording governs. A negligence-only policy is not a civil liability policy, and the difference can be decisive when a claim arrives.
Related concepts
- Tort vs contract claim — the two routes by which a claimant frames a professional negligence claim.
- Economic loss claim — what most PI claims are about, including pure economic loss under Hedley Byrne.
- Breach of contract cover — what a PI policy does and does not do for contract claims.
- Civil liability extension — the broader trigger many UK PI wordings use.
- Quantum of a PI claim — how loss is measured once breach is established.
Frequently asked questions
Is the Bolam test still good law?
Yes — Bolam remains the foundation for the standard of care in professional negligence cases, refined by Bolitho. The court accepts a defendant’s conduct as non-negligent where it is supported by a responsible body of professional opinion, provided that opinion itself withstands logical analysis. Some areas (notably medical consent following Montgomery v Lanarkshire Health Board [2015]) have moved away from pure Bolam, but the wider professional negligence framework still rests on it.
What’s the difference between breach of duty and breach of contract?
A breach of duty (in tort) is failing to meet the standard of care imposed by law. A breach of contract is failing to meet an obligation in the contract — which may be a duty of skill and care, or a higher duty (such as a strict obligation or an outcome guarantee). On the same facts, a claim can often be framed in tort, in contract, or both. The remedies and limitation rules differ. See tort vs contract claim.
Do all UK PI policies cover breach of duty?
Most do, but the trigger language varies. Civil liability wordings cover negligence and most other heads of civil liability arising from professional services. Negligence-only wordings cover the breach-of-duty route but may not cover a pure contract claim. Mind the difference between the marketing summary and the schedule.
Does the Consumer Duty change the standard of care?
The FCA’s Consumer Duty raises the conduct standards that regulated financial firms owe to retail customers. It does not directly change the common-law duty of care, but it informs what a reasonable regulated firm would do, which feeds into the Bolam standard. Firms in scope should consider how Consumer Duty obligations interact with their PI cover. See Consumer Duty PI implications.
Are honest mistakes covered?
Yes, in principle. PI insurance is designed to respond to negligent — and therefore non-deliberate — acts and omissions. Dishonest conduct is typically excluded, although some wordings carve back cover for innocent partners of a dishonest individual. See dishonesty extension.
What if I followed industry guidance and still got sued?
Compliance with reputable industry guidance is usually a strong defence on the breach question. The court will treat it as evidence of the standard of care. But guidance is not a complete answer: Bolitho requires that the practice supported by guidance must itself be logical and defensible. Where guidance is out of step with current practice, the defence may not hold.
Does breach of duty apply where I gave free advice?
Potentially, yes. The duty of care in tort can arise even without a contract, where the professional assumed responsibility for the advice and the recipient reasonably relied on it. Free advice in a professional context — over coffee, by email, at a networking event — has been the subject of PI claims. Care, scope-of-engagement letters and disclaimers help manage the risk.
How long do I have to defend a breach of duty allegation?
Limitation in contract is typically six years from breach. Limitation in tort is six years from the date the claimant suffered damage, with a long-stop of 15 years under the Latent Damage Act 1986 and a possible three-year extension from the date of knowledge under section 14A of the Limitation Act 1980. Some claims arrive late in their limitation period, which is why prompt notification on first awareness matters — see circumstance notification.
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About Apex Insurance Brokers Ltd
Apex Insurance Brokers Ltd is a Bristol-based insurance broker authorised and regulated by the Financial Conduct Authority (firm reference number 724952). The company is registered in England and Wales under Companies House number 07014570. Contact: info@apexinsurancebrokers.co.uk | 0117 325 0027.
Last reviewed: May 2026 by Apex Insurance Brokers Ltd.
Important: this article is general information, not advice on your specific circumstances. For advice on PI insurance for your firm, contact us on 0117 325 0027 or info@apexinsurancebrokers.co.uk.