Category: Insurance case law · Reviewed by Mark Fox, Broker · Renewals · Last reviewed June 2026
Commercial Court decision on material non-disclosure under a fire policy and the application of the Pan Atlantic test in a substantial commercial property loss.
Synergy Health (UK) Ltd, a substantial commercial business operating sterilisation and decontamination facilities for the healthcare sector, held a commercial property and business interruption policy with CGU Insurance plc, trading as Norwich Union. One of the insured premises was destroyed or seriously damaged by a major fire, giving rise to a substantial claim under the policy.
The insurer declined the claim and sought to avoid the policy on the ground of pre-contractual material non-disclosure and misrepresentation. The matters relied upon by the insurer included aspects of the loss history of the insured and its predecessor businesses, certain features of the construction and risk management at the affected premises, and information concerning the way in which the insured’s operations interacted with the fabric of the building. [verify citation]
The placing was effected through brokers. The broker’s file, the underwriter’s notes and contemporaneous correspondence formed the principal documentary evidence at trial. The insured contended that the matters relied upon had either been disclosed in substance, were not material in the Pan Atlantic sense, were within the underwriter’s actual or constructive knowledge by reason of survey reports or other sources, or had not in fact induced the underwriter to write the risk on the terms agreed.
The case is one of a sequence of substantial property losses litigated in the Commercial Court in the late 2000s and early 2010s, in which the Pan Atlantic test was applied against the background of a sustained debate over whether the doctrine of pre-contractual disclosure was operating fairly between insurers and policyholders. That debate ultimately contributed to the reforms enacted in the Insurance Act 2015.
The principal issues were factual. First, what had been presented to the underwriter at placement and what had been omitted? Second, were the matters not disclosed material in the Pan Atlantic sense, having regard to the views of independent expert underwriters? Third, was the underwriter on risk to be taken as having had actual or constructive knowledge of those matters by virtue of survey reports, public information about the insured’s business or the underwriter’s general experience? Fourth, had the matters not disclosed in fact induced the underwriter to write the risk on the terms agreed, or would the risk have been written on the same or substantially the same terms in any event?
The case also raised, in the background, the question whether avoidance ab initio was a proportionate response to the kind of non-disclosure that had been established on the facts, a question which the Insurance Act 2015 was shortly to answer in part.
The Commercial Court held that the insurer was entitled to avoid the policy. On the evidence, the matters relied upon by the insurer had not been adequately disclosed, were material to a prudent underwriter, and had induced the underwriter on risk to write the policy on the terms agreed. The insured’s contentions on constructive knowledge and on inducement were rejected on the evidence. [verify citation]
The judgment is a detailed working through of the Pan Atlantic principles in a complex commercial property context. It emphasises that a fair presentation must convey the substance and significance of material matters, not merely include them in dense supporting documents from which the underwriter would have to extract them. It also illustrates the importance of contemporaneous underwriter testimony and broker file evidence in determining what had in fact been presented and what had not.
The substantial claim accordingly failed. The insured had subsequently to bear the loss to the extent it had not been recovered from other sources.
The duty of pre-contractual disclosure in commercial insurance, as restated in Pan Atlantic v Pine Top, requires the insured to make a fair presentation of the risk to a prudent underwriter. Disclosure is not made by burying material information in voluminous attachments from which the underwriter would have to extract it; the substance and significance of material matters must be conveyed to the underwriter in a manner reasonably calculated to bring them to their attention.
Where material matters have not been disclosed and have induced the actual underwriter to write the policy on the terms agreed, the insurer is entitled to avoid the contract ab initio. Constructive knowledge of the underwriter is not lightly inferred and does not extend to matters which a prudent underwriter could not be expected to discover for themselves.
Synergy Health v CGU is a substantial example of the application of the pre-Insurance Act 2015 disclosure regime in a commercial property context. Its emphasis on the need for the substance of material matters to be brought home to the underwriter prefigures the express requirement of accessibility in section 3(3)(b) of the Insurance Act 2015.
The case is sometimes cited as part of the body of authority which informed the Law Commissions’ view that the all-or-nothing remedy of avoidance was producing disproportionate outcomes for policyholders, particularly in property losses where the non-disclosure was negligent rather than deliberate or reckless. The Act’s introduction of proportionate remedies in Schedule 1 was a direct response to that concern.
For brokers, the case is a practical reminder that the placing submission must convey the substance and significance of material matters in a way the underwriter can reasonably absorb. For insureds, it is a sobering illustration of the consequences of inadequate disclosure on a major fire claim.
By Matt Bartlett, Director, on 2026-06-06. Next review: 2026-12-06.
This entry is part of the Apex Insurance Wiki. Last reviewed by Matt Bartlett on 2026-06-06. Apex Insurance Brokers Limited, FCA FRN 724952, Companies House 07014570. Not regulated advice — consult your broker on your specific position.
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