Category: Clauses & wordings · Reviewed by Tim Roche, Director · PI & Commercial · Last reviewed June 2026
A “Claim” is the formal demand, allegation or proceeding that triggers the insurer’s obligation to defend or indemnify under a liability policy — the precise definition determines when notification is required and when cover responds.
The definition of “Claim” sits at the heart of every liability policy on a claims-made trigger. It identifies the event that crystallises the insurer’s obligations: the moment when a third party’s grievance becomes something the insured must report and the insurer must consider.
A modern UK liability wording typically defines Claim as a non-exhaustive list including: (a) a written demand for monetary or non-monetary relief; (b) the service of any civil, criminal, arbitration or administrative proceeding; (c) the receipt of any letter of claim under a pre-action protocol; (d) any formal investigation, examination or enquiry by a regulator that names the Insured; (e) an extradition request; and (f) for D&O cover, any written request to interview an Insured Person.
The width of the definition matters in two directions. A narrow definition (covering only court proceedings) defers notification but risks late notice problems when an early demand letter is overlooked. A wide definition (capturing any demand or threat) accelerates notification but exposes the insured to a flood of minor notifications and possible premium consequences at renewal. Most UK markets settle around a balanced position.
A separate but related concept is “Circumstance” — facts that may give rise to a Claim but have not yet done so. Most policies define both, and the interplay between them is one of the most litigated areas of insurance contract law (see HLB Kidsons v Lloyd’s [2008] EWCA Civ 1206).
The definition is the gatekeeper to four downstream obligations: notification, defence, indemnity and aggregation. Each Claim is typically a separate event for the purposes of retention and limits, unless the aggregation clause draws several Claims together into a single Claim or single occurrence. AIG Europe Ltd v Woodman & Others [2017] UKSC 18 is the leading authority on aggregation in PI.
The legal status of the definition of Claim flows from ordinary principles of contractual construction (Arnold v Britton [2015] UKSC 36, Wood v Capita Insurance Services [2017] UKSC 24): the words mean what a reasonable reader would understand them to mean in their commercial context.
For claims-made policies, the definition operates with the notification clause to determine whether cover is triggered. The Insurance Act 2015 reformed but did not abolish the requirement that the insured comply with notification provisions. Section 11 prevents an insurer from refusing to pay a claim for a breach of a term that does not relate to the actual loss, but a true condition precedent to notification of a Claim remains effective: see Zurich Insurance v Maccaferri Ltd [2016] EWCA Civ 1302.
The pre-action protocols under the Civil Procedure Rules require a letter of claim before proceedings. The receipt of such a letter is almost universally treated as a Claim under modern wordings. The CPR also provides for early disclosure and structured negotiation, and a properly drafted Claim definition captures these procedural steps.
For regulated firms, additional triggers apply. FCA enforcement notices, PRA investigations, HMRC enquiries and ICO regulatory action all sit at the intersection of Claim and Investigation cover. The Senior Managers and Certification Regime (SMCR) creates personal liability for senior managers, often picked up under D&O Claim definitions.
The Third Parties (Rights against Insurers) Act 2010 gives third parties direct rights against the liability insurer where the insured is insolvent. The third-party claimant’s demand may itself constitute a Claim for the purposes of the policy.
Important case law: Thorman v New Hampshire Insurance [1988] 1 Lloyd’s Rep 7 (multiple Claims from one act); J Rothschild Assurance v Collyear [1999] CLC 999 (claims-made principles); HLB Kidsons v Lloyd’s [2008] EWCA Civ 1206 (the boundary between Claim and Circumstance).
The Claim definition produces three operational questions that recur in every PI, D&O, EPL and crime claim file.
Has a Claim been made? The most common scenario is the disgruntled client email that says “we are very unhappy with the work — we expect this to be put right”. A coverage solicitor asks whether this is (a) a written demand for monetary or non-monetary relief (likely a Claim), or (b) merely an expression of dissatisfaction (a Circumstance at most). The leading test: would a reasonable recipient consider that a specific allegation is being made? If yes, notify as a Claim. If no, but the facts may give rise to one, notify as a Circumstance.
When was the Claim first made? For aggregation, allocation and limit purposes, the date the Claim was first made determines the policy year that responds. Where a demand letter is followed by formal proceedings, the demand is the first Claim and any subsequent proceedings arising from the same underlying matter form part of that Claim. Most wordings expressly state that “all Claims arising from the same act, error, omission or related series of acts shall be treated as a single Claim first made when the earliest such Claim was first made”.
Who must notify? Notification clauses typically require the Insured to notify the insurer “as soon as practicable” or “within X days” after the Claim is first made against the Insured. In practice, broker reporting templates collect the date the demand was received, the identity of the claimant, the nature of the allegation, and the estimated quantum.
Practical issues at the claims-handling stage include:
Brokers should maintain a clear notification log and use a standard Claim/Circumstance notification template that captures all the elements insurers need. Late, incomplete or ambiguous notifications are the most common reasons for coverage defences.
Narrow Claim definition: a Claim is only the receipt of formal court proceedings. Rare in modern PI but seen in some older property and goods-in-transit policies.
Broad Claim definition: any written or oral demand for monetary or non-monetary relief. Common in US-style D&O.
Multi-trigger PI definition: includes regulatory investigations, criminal proceedings, formal complaints to professional bodies and pre-action protocols. The market standard for PI today.
Crime-policy “discovery” trigger: in crime/fidelity cover the Claim is the discovery of loss, not a third-party demand. This is a separate model and requires different notification.
Defence costs as a “Claim”: some policies extend the definition to include costs incurred in defending an Insured Person under an inquiry. The boundary between defending a Claim and defending an inquiry is contentious.
Cyber liability Claim: specialised cyber wordings extend the definition to PCI-DSS assessments, payment-card brand demands and regulatory fines for personal-data breaches.
Investigation cover: many D&O and PI policies treat Investigation as a distinct category, not a Claim, with separate notification, defence-costs and indemnity provisions.
Innocent partners severability: where one Insured commits fraud, the Claim definition usually preserves cover for innocent Insureds — but coverage is denied to the wrongdoer.
Apex Surveyors Ltd is a firm of chartered surveyors holding a PI policy. The Claim definition includes: “any written demand for monetary or non-monetary relief, including any letter of claim under a pre-action protocol”.
On 12 May 2026 the firm receives an email from a former client: “Following your valuation report dated 14 March 2024, our lender’s valuation has come in £180,000 lower than yours. We are taking advice and reserve all rights.” The fee earner files the email and takes no action.
On 28 August 2026 the client’s solicitor sends a formal letter of claim under the Professional Negligence Pre-Action Protocol, demanding £180,000 plus interest. The firm notifies its broker.
The insurer accepts notification but issues a reservation of rights, querying whether the May email itself was a Claim. The May email contained an implicit allegation of error in the valuation and was a written demand for non-monetary relief (“we reserve all rights”). On the wording’s wide definition, the Claim was first made on 12 May, not 28 August.
The firm’s policy renewed on 1 July 2026 and the limit at the new policy year is £2m (down from £5m). If the Claim was first made on 12 May, the £5m limit applies; if 28 August, the £2m limit applies. The valuation negligence quantum is £1.6m — within either limit — but the legal-defence costs run beyond £400,000.
The lesson: train fee earners to flag any client communication that asserts dissatisfaction with the work, and notify early. Reading the Claim definition broadly in favour of notification almost always protects the insured.
By Matt Bartlett, Director, on 2026-06-11. Next review: 2026-12-11.
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This entry is part of the Apex Insurance Wiki. Last reviewed by Matt Bartlett on 2026-06-11. Apex Insurance Brokers Limited, FCA FRN 724952, Companies House 07014570. Not regulated advice — consult your broker on your specific position.
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