The professional indemnity policy is one of the few commercial insurance products a firm should usually not be allowed to cancel mid-term, and that fact catches buyers out at the worst possible moments.
Buyers approach a PI cancellation expecting the same mechanics as motor or property cover: short-rate the premium, return the unused portion, move on. Most UK PI wordings do not work that way. Mid-term cancellation by the insured is either prohibited entirely or permitted only in narrow circumstances. The reason is the claims-made trigger: the moment the policy ends, the firm has no insurer for any claim made after the cancellation date, regardless of when the work was done. Add an immediate run-off purchase requirement on top, and the apparent saving from cancelling early often turns into a net cost. This guide sets out how PI cancellation actually works, what ICOBS requires, and how to handle the specific cases — closure, merger, sale — that are the genuine triggers for ending cover before renewal.
A trading professional firm rarely has a legitimate reason to cancel its PI policy mid-term. The policy attaches a 12-month period of cover for new claims made in that window. Cancelling early reduces that window and exposes the firm to claims made after the cancellation date. For a trading firm the answer is almost always to ride the policy out to renewal and then change insurer at the natural break.
The genuine cancellation triggers are structural events: the firm is closing, has been acquired, has merged into another entity, or has been sold to a buyer that has its own PI in place that picks up the relevant exposures. In each case the cancellation is part of a transaction and the run-off question must be answered before the policy is cancelled, not afterwards.
The Financial Conduct Authority’s Insurance: Conduct of Business Sourcebook — ICOBS — sets out conduct requirements for cancellation in chapter 7. Where the buyer is a consumer, ICOBS 7.1 sets out a statutory cooling-off period of 14 days from contract inception, during which the policy may be cancelled by the consumer with a return of premium. The cooling-off rules do not apply in their full form to commercial customers, but ICOBS 2.5 requires insurers and brokers to communicate cancellation rights clearly and to deal with cancellation requests promptly.
In commercial PI, the cancellation provisions are governed by the policy wording rather than ICOBS. Most UK PI wordings give the insured no automatic right to cancel mid-term. The insurer typically retains a right to cancel on notice — usually 30 days — in narrow circumstances such as non-payment of premium, material misrepresentation, or insolvency of the insured. The insured’s right to cancel, where it exists at all, is often subject to the insurer’s prior agreement and to either a short-rate premium calculation or no rebate at all.
Section 5 of the Insurance Act 2015 imposes a continuing duty on the insurer to act in good faith. That duty does not give the insured a unilateral right of cancellation, but it bears on how the insurer should respond to a reasonable cancellation request — particularly where the firm is closing or being acquired and run-off cover is being purchased.
The mechanics of a PI cancellation depend on the wording. A typical SME PI wording in the UK market contains a cancellation clause that allows the insurer to cancel for non-payment of premium on 14 to 30 days’ notice and is silent on cancellation by the insured. Some wordings expressly prohibit insured-initiated cancellation. Others permit it subject to the insurer’s agreement, on terms to be agreed.
Where insured-initiated cancellation is permitted and agreed, the premium calculation is rarely pro-rata. The insurer’s reasoning is that the bulk of the risk on a claims-made policy is concentrated towards the end of the period, because circumstances notified late in the period attach cover and the policy must respond to any claim arising from those circumstances. A pro-rata return would understate the insurer’s exposure to claims that have already attached. The market default is therefore short-rate — the insurer retains a higher proportion of the premium than the proportion of unexpired period — or in some cases retains 100% of the premium.
The more important point is what cancellation does to the firm’s coverage position. A claims-made policy cancelled on 1 June stops responding to claims first made on or after 2 June. Any claim arriving after that date — including a claim relating to work done years before — is uninsured unless the firm has purchased run-off cover or has an immediate replacement policy in force.
For a firm that is genuinely closing, the cancellation must be paired with the purchase of run-off cover. The run-off attaches at the cancellation date and provides claims-made cover for the agreed number of years. The Solicitors Regulation Authority Minimum Terms require six years of run-off as a mandatory minimum for solicitors closing a practice. The RICS regime imposes a similar requirement on surveyors. The Architects Registration Board does not mandate run-off in the same prescriptive way, but the standard of care owed by architects under the ARB Code of Conduct effectively requires it. See Run-off cover explained for the detail.
For a firm that is merging or being acquired, the cancellation question becomes a deal point. The acquirer may agree to take on the seller’s pre-completion PI exposure under its own programme, in which case cancellation can proceed cleanly. More often the acquirer requires the seller to maintain run-off cover for the pre-completion liabilities — six years is the standard ask — and the sale and purchase agreement should make this explicit. Cancelling the seller’s policy without that mechanism in place leaves the selling principals personally exposed to any post-completion claim against the historic work.
A small architectural practice, two principals and three staff, decides to merge with a larger firm at the end of November 2025. The acquiring firm has its own PI policy with a £5m limit. The principals assume their existing policy can simply be cancelled at completion and the acquirer’s policy will respond to any historic claim.
The existing policy is on a wording with no insured-initiated cancellation right; the insurer agrees to cancel on a short-rate basis returning 40% of the £8,000 annual premium with three months remaining. The principals cancel on completion and stop the direct debit.
In June 2026 a claim arrives on a residential project the smaller firm completed in 2022. The acquirer’s PI declines because the work was done before the acquisition and the acquirer’s policy has a retroactive date matching its own incorporation. The cancelled policy declines because it is no longer in force. The principals face a claim of £350,000 personally, and their professional defence costs come out of their own pockets.
Had the merger been planned with PI in mind, the principals would have bought six years of run-off cover at the cancellation date — a single premium in the region of £18,000 to £24,000 for that risk profile — and the 2026 claim would have been paid in full. The £3,200 short-rate refund saved was the most expensive £3,200 in either principal’s career.
Identify the structural trigger early. If the firm is heading towards closure, merger, sale or a partner retirement that will materially change the entity, treat the next renewal as the planning point for the transaction.
Ask the broker for the cancellation provisions in the policy before any cancellation conversation begins. Knowing the rebate position and any consent requirement up front avoids surprises at the moment of cancellation.
Where cancellation is genuinely needed, sequence it. Confirm the run-off placement, agree the cancellation date with the insurer, notify any circumstances against the expiring policy, and only then cancel.
In a transaction, push the run-off question into the sale and purchase agreement. Make it explicit which party is buying run-off, what limit, what period, and how the cost is allocated. The acquirer’s instinct will be to make this the seller’s problem; the seller’s instinct should be to negotiate a contribution to the run-off premium as part of the consideration.
Confirm any cancellation in writing with the insurer and the broker. A formal note of the cancellation date, the rebate (if any) and the run-off arrangements is essential evidence if a coverage question emerges later.
Apex’s view: cancellation is the part of the PI life cycle where buyers most often make decisions for accounting reasons that they would never make for risk reasons. The premium refund is small; the uninsured tail is potentially career-ending. We have walked away from cancellation instructions where the firm refused to buy run-off, on the basis that we were not prepared to be associated with the inevitable consequence. The default position should be that a PI policy is not cancelled until run-off is in place, the SPA is signed, or the replacement programme has incepted. Anything else is wishful thinking dressed up as cost saving.
Apex Insurance Brokers serves UK professional services firms and commercial businesses. Call 0117 325 0027, email hello@apexinsurancebrokers.co.uk, or request a quotation.
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