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PI insurance explained

Hold harmless and indemnity clauses: how they affect your professional indemnity cover

Reviewed by Apex Insurance Brokers · Last reviewed 2026-08-05

In short: A hold harmless or indemnity clause is a contract term where you promise to cover another party’s losses. These clauses can expand your liability beyond common law — and most UK professional indemnity policies only cover liability you would have had anyway. If a clause makes you liable for more than that, your insurer may not pay. Always check contracts before signing.

What is a hold harmless or indemnity clause?

These clauses appear in almost every commercial contract a professional signs — consultancy agreements, construction sub-contracts, framework agreements, and supplier terms. They shift the risk of loss from one party to another.

An indemnity clause is a promise to compensate another party for defined losses, often on a pound-for-pound basis. A hold harmless clause is a promise not to hold the other party responsible for certain losses, and frequently to defend or reimburse them if a claim arises. In practice the two are often combined into a single “indemnify, defend and hold harmless” provision.

The important point for professionals is that these are contractual obligations. They can create liability that would not exist under the ordinary law of negligence — and that gap is exactly where professional indemnity (PI) cover can fall away.

Why this matters for your PI insurance

Most UK PI policies are written to cover your civil liability arising from your professional services — broadly, the liability you would have at common law for negligence, breach of duty, or breach of contract. What they typically do not cover is liability you have voluntarily taken on that goes beyond that baseline.

This is usually dealt with through an “assumed liability” or “contractual liability” exclusion. It removes cover for liability you accepted under a contract that you would not otherwise have had. So if a hold harmless clause makes you responsible for a client’s losses regardless of fault, or for losses caused by a third party, your insurer may decline that part of the claim.

The result can be a nasty surprise: you assume you are insured because you have a PI policy, then discover that the specific obligation you signed up to sits outside it.

Clauses that commonly cause PI problems

Covered vs. potentially excluded: a quick comparison

Contract position Typical PI response
Reasonable skill and care duty Generally covered — mirrors common law liability
Indemnity limited to your own negligence Usually covered, subject to limit and terms
Uncapped indemnity Covered only up to your policy limit; excess is uninsured
Fitness-for-purpose / guaranteed outcome Often excluded as assumed liability
Indemnifying another party’s negligence Typically excluded

This is a general guide only. Wordings vary between insurers, so the exact position depends on your own policy.

Signing a contract with an indemnity clause? Make sure your PI cover actually backs it up.

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The Unfair Contract Terms Act and reasonableness

UK law does place some limits on how far indemnity clauses can go. Under the Unfair Contract Terms Act 1977, certain clauses in business-to-business contracts must satisfy a test of reasonableness, and liability for death or personal injury caused by negligence cannot be excluded at all. That can, in some situations, soften an aggressive clause.

But you should never rely on a court striking a clause down. Enforceability is fact-specific and expensive to litigate. The safer route is to negotiate the clause before you sign, and to check that anything you do accept sits within your PI cover.

How to protect yourself before signing

If a clause genuinely cannot be watered down — because a large client insists on its standard terms — then at least go in with your eyes open, knowing which part sits outside your cover. In some cases an insurer can be asked to consider the wording, though there is no guarantee they will agree to it. Speak to Apex about your PI cover before you sign anything you are unsure about.

Common questions

Does professional indemnity insurance cover contractual indemnity clauses?

Only to the extent the liability mirrors what you would have had at common law. Most PI policies contain an assumed-liability exclusion that removes cover for obligations you accepted contractually and would not otherwise have owed. Check your specific wording.

Should I refuse to sign a hold harmless clause?

Not necessarily — they are standard in commercial contracts. The aim is to negotiate the clause down to your own negligence, capped at a sensible figure, and to confirm the remaining exposure fits within your PI cover. Take legal advice on significant contracts.

What happens if I sign an uncapped indemnity?

Your PI policy will still only respond up to its limit of indemnity. Anything above that limit, or outside the cover, becomes a personal or business liability you have to fund yourself. That is why capping the clause matters.

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

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