Composite policies

Category: Policy structure · Reviewed by the Apex broking team · Last reviewed 2026-08-22 · ~3 min read

Definition

A composite policy is one document that insures two or more parties who each have their own, different interest in the insured subject matter: an owner and a mortgagee, an employer and a contractor, a landlord and a tenant, a parent company and its subsidiaries. Because the interests are different, the loss each party can suffer is different, and the insurer’s promise to each is a separate promise. The contrast is with a joint policy, where the insureds share one and the same interest and their rights stand or fall together.

The authority

The classic statement is in General Accident Fire and Life Assurance Corporation v Midland Bank [1940] 2 KB 388, where Sir Wilfrid Greene MR explained that a composite policy brings together, for reasons of convenience, the interests of a number of persons in a single document, and that it operates as a covenant to indemnify in respect of each individual and different loss the various named persons may suffer. There is no joint element; there are simply separate contracts of indemnity recorded in one place.

Composite or joint?

The label on the document is not decisive. What matters is whether the insureds’ interests are the same or different. A husband and wife insuring jointly owned contents are ordinarily joint. A bank and a borrower insuring the same building are ordinarily composite, because the bank’s interest is its security and the borrower’s is ownership. Where the policy is joint, a vitiating act by one insured — non-disclosure, a fraudulent claim — can defeat the whole policy. Where it is composite, the starting point is that only the contract with the guilty insured is affected.

Why the distinction matters

Three consequences do most of the work. On disclosure, each composite insured owes its own duty and is judged on its own presentation, so an innocent co-insured is not automatically prejudiced by another’s failure — see fair presentation of the risk. On fraudulent claims, the same logic applies: the fraud is a breach of that insured’s contract. On subrogation, an insurer cannot ordinarily subrogate against a person it insures under the same policy for the same loss, which is precisely why contractors’ and employers’ interests are so often written composite rather than left to a bare waiver.

Limits and sub-limits

A recurring commercial question is whether a limit or sub-limit is available once across all insureds or separately to each. The Court of Appeal returned to this in Liberty Mutual Insurance Europe SE v Bath Racecourse Company Ltd [2025] EWCA Civ 153, holding that a composite policy comprises a series of contracts with each policyholder insured separately, so each insured has its own access to a sub-limit unless the wording clearly says otherwise. If aggregation across insureds is intended, it has to be spelled out.

Drafting points

Composite structures are usually reinforced rather than left to implication. Common devices are an express statement that the insurance operates as if a separate policy had been issued to each insured; a non-vitiation or non-invalidation clause protecting insureds who did not know of the relevant act or omission; separate notification obligations; and an express waiver of subrogation against named parties. Each of those is a different mechanism and none of them substitutes for the others. Where a contract obliges you to procure any of them, check the obligation against the policy before signing, not afterwards — see waiver of subrogation in UK contracts.

Where it comes up

Construction is the obvious home of composite cover, through project policies and contractors all risks placements naming employer, contractor and sub-contractors. It is equally common in property finance, group programmes covering multiple legal entities, and any arrangement where a funder, landlord or client insists on being named. In each case the question to ask is not “am I named?” but “is my interest insured separately, and what happens to me if someone else on the schedule gets it wrong?”

Frequently asked questions

Does being named on a policy make me composite?

Not automatically. Whether cover is composite or joint depends on whether the named parties have the same interest or different interests in the subject matter. Good drafting states which is intended.

If one insured commits fraud, do the rest lose cover?

Under a composite policy the starting point is no, because each insured has its own contract. Under a joint policy the position is much less favourable. The wording, including any non-vitiation clause, decides the outcome.

Can the insurer subrogate against a co-insured?

Generally not against a party it insures under the same policy for the same loss and interest. That is one of the main practical reasons for writing interests composite rather than relying on a separate waiver.

Related entries

• Subrogation
• Waiver of subrogation in UK contracts
• Definition of insured
• Contractors all risks
• Fair presentation of the risk
• Commercial insurance UK

This entry is part of the Apex Insurance Wiki. Position stated as at August 2026. Last reviewed 2026-08-22. Next review: 2027-02-22. It is general insurance information, not legal advice, and not regulated advice on a specific policy.

Apex Insurance Brokers Limited is authorised and regulated by the Financial Conduct Authority (FRN 724952). This page is general information, not advice on a specific policy.