Category: Clauses & wordings · Reviewed by Al Jabbar, Broker · Specialist Risks · Last reviewed June 2026
An insured event is the specific happening, occurrence or circumstance defined in the policy that gives rise to the insurer’s liability to pay.
The insured event is the trigger that converts a contract of insurance from a contingent promise into an obligation to pay. Until the insured event occurs (or, in claims-made cover, until a claim is made), the insurer has no obligation beyond standing on cover and pricing the risk. Once the insured event occurs and is properly notified, the insurer’s indemnity obligation crystallises.
The insured event is identified by the insuring clause and shaped by definitions. In property insurance the insured event is typically “physical loss of or damage to insured property by an insured peril during the period of insurance”. In liability insurance the insured event may be the “occurrence” (an event causing injury or damage) or the “claim” (an assertion of legal liability against the insured). In life and accident insurance the insured event is the death, injury or illness of the life assured. In cyber insurance the insured event may be the “network security event”, “data breach” or “cyber incident”, each with elaborate definitions.
What constitutes the insured event has profound consequences for limits, deductibles, aggregation, notification, multi-year policy responses and reinsurance recovery. The Supreme Court in AIG Europe Ltd v Woodman & Others [2017] UKSC 18 confirmed that the language defining the relevant unifying factor in an aggregation clause is the starting point for analysis, and the same logic applies to the insured event itself.
The insured event is conceptually distinct from “loss” and “damage”. The insured event causes loss; the loss is what the insurer pays for. Most coverage disputes ultimately turn on whether the asserted facts amount to an insured event within the policy’s definition.
The Marine Insurance Act 1906, section 55, provides that, subject to the policy, the insurer is liable for any loss proximately caused by a peril insured against. The proximate cause doctrine — developed in Leyland Shipping Co Ltd v Norwich Union Fire Insurance Society Ltd [1918] AC 350 — is the test for whether an insured event in fact triggered the loss. Lord Wright famously said in Yorkshire Dale Steamship Co v Minister of War Transport [1942] AC 691 that proximate cause is the cause “efficient” in producing the loss, not the cause closest in time.
Under the Insurance Act 2015, sections 13A (in force from 4 May 2017 under the Enterprise Act 2016 amendment), an insurer is liable in damages for unreasonable delay in paying valid claims once the insured event has occurred and been notified. This puts pressure on insurers to investigate and decide on coverage promptly after an insured event.
The Supreme Court’s analysis in Financial Conduct Authority v Arch Insurance (UK) Ltd [2021] UKSC 1 elaborated the proximate cause test in a multi-causation context, holding that several concurrent causes can each be a proximate cause of an insured loss for the purposes of disease and prevention-of-access insured events.
For consumer policies, the Consumer Insurance (Disclosure and Representations) Act 2012 governs pre-contract disclosure but the existence and definition of the insured event remain a matter of policy construction. The FCA’s ICOBS rules, particularly ICOBS 8 (handling of claims), regulate how insurers must approach claims arising from insured events.
When a policyholder reports a potential claim, the broker and insurer first identify which insured event is alleged. The same set of facts may engage more than one insured event: a factory fire is the insured event for a property policy; the same fire causing employees’ injuries is the insured event for an employers’ liability policy; the resulting interruption of trade is the insured event for a business interruption policy.
For each, the insurer asks: (i) Has the insured event occurred within the period of insurance (or, in claims-made cover, has the claim been first made within the period)? (ii) Was the insured event the proximate cause of the loss claimed? (iii) Are any concurrent causes excluded? (iv) Has notification been properly given as a condition (or condition precedent) to liability?
Aggregation of insured events is a regular battleground. If multiple injuries flow from one defective product, brokers and insurers analyse whether there is one insured event (one occurrence, with one limit and one deductible) or many (multiple occurrences, with multiple limits but multiple deductibles). The leading authorities include Kuwait Airways Corporation v Kuwait Insurance Co SAK [1996] 1 Lloyd’s Rep 664 and AIG Europe v Woodman [2017] UKSC 18.
Brokers should counsel clients to err on the side of early notification once any fact is known that might point to an insured event. Under HLB Kidsons v Lloyd’s Underwriters [2008] EWCA Civ 1206, the courts treat aggressive insurer arguments about insufficient circumstance notification with caution where the underlying notification was made in good faith.
By line of business, insured events differ widely. In property, the insured event is loss or damage proximately caused by an insured peril; in liability, it is either an occurrence causing injury or damage or a claim made; in financial lines, it may be a wrongful act, an investigation, an extortion demand or the discovery of a loss; in marine cargo, it is loss of or damage to the subject matter from a covered peril during the insured transit; in cyber, it is a network security event, a data privacy event or a cyber business interruption.
In aggregate covers, “insured event” can describe a series of related occurrences treated as one. In stop loss and reinsurance, “event” is contractually defined and litigated (see Caudle v Sharp [1995] LRLR 433 on the meaning of “event” in reinsurance and the line of cases on hours clauses in catastrophe reinsurance).
The terms “loss”, “claim” and “occurrence” overlap but are not synonymous. Policies often define them separately and use them within a single insuring clause, so reading definitions carefully is essential.
A bakery is insured under a property and business interruption policy. A fire at the premises destroys ovens, dough mixers and stock totalling £180,000 and interrupts trading for 11 weeks with gross profit loss of £220,000. The insured event under the property section is the fire (an insured peril proximately causing physical damage); under the business interruption section, it is the interruption proximately caused by physical damage at the insured premises. Both insured events are within the period. Both are notified within 30 days as required by the conditions. The insurer pays £180,000 (property) plus £220,000 (BI), net of deductibles and subject to the relevant limits.
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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