How to Switch PI Insurer Mid-Policy — A UK Practical Guide

Switching Professional Indemnity (PI) insurer is straightforward at renewal. Switching mid-policy is harder. There are cancellation provisions to read, return-premium calculations to negotiate, retroactive-date risks to manage, and a notification obligation to your old insurer that does not disappear when the new policy is bound. Done badly, a mid-term switch can leave a gap in cover that only becomes apparent when a claim arrives months or years later.

This guide is for UK practices and professionals on a claims-made PI policy who are considering switching mid-term — usually because of a service issue, a major premium increase, a coverage decision, or a change in the business that the current insurer cannot accommodate. It covers what the cancellation process actually looks like, what you must do to protect cover for past work, and the practical sequence that avoids the common traps.

For renewal-time switching (which is materially easier), see our broader Professional Indemnity Insurance overview. For the broker-vs-direct decision when re-placing, see Should I use a PI broker or buy direct?.

Why most PI policies should not be switched mid-term — and when they should

Before getting into the mechanics, an honest first question: is switching mid-term actually the right move?

Most PI policies should run their term. The reasons are practical:

Premium recovery is partial. UK PI policies typically apply a "short-period" or "minimum-and-deposit" basis on cancellation, meaning you get back less than the unused proportion of the annual premium. A six-month-old policy might return only 30–40% of premium on cancellation, not 50%.

You may have to pay both premiums. If you switch to a new policy with a retroactive date that does not cover all the past work the original policy covered, you will need to keep paying the old policy as run-off — meaning two premiums simultaneously for a period.

Renewal-time switching is cleaner. At renewal you can compare quotes, choose freely, and the retroactive-cover question is handled naturally by the new insurer issuing with appropriate retro.

A mid-term switch is justified, in our view, when:

• The current insurer has materially changed cover or service mid-term — for example by imposing a coverage restriction following a market event, or by being acquired and showing service deterioration.
• A claim has been declined on a basis you dispute and the relationship is unworkable — bearing in mind the rejected-claim still attaches to the old policy (see What to do if your PI claim is rejected).
• A regulator-imposed minimum has changed mid-year and the current policy no longer complies — for example if your professional body lifts minimum cover and the current insurer will not accommodate.
• The business has fundamentally changed — material acquisition, change of activity, scale-up — and the current insurer will not re-underwrite at sensible terms.
• The premium increase mid-term is severe — for example following a renewal adjustment or notification event — and a different insurer will offer materially better terms.

If none of these apply, run the policy to renewal and switch then.

The claims-made wrinkle — why this is not like switching car insurance

PI insurance in the UK is written on a claims-made basis. That means the policy in force when the claim is notified is the one that responds, regardless of when the work that caused the claim was done. This is the single most important fact to understand before switching.

The implications:

You stay exposed to past work after you cancel. If you cancel a policy today, claims relating to work done during the policy period are no longer covered by that cancelled policy — because no policy is in force when the claim is notified. Unless you have a new policy with retroactive cover going back to before the old policy started, the historic work is uninsured.

Retroactive date on the new policy is everything. When you bind a replacement policy, the retroactive date — the earliest date back to which the policy will respond — must cover all the work you have done up to today. If it does not, work done before the retroactive date is uninsured. Insurers commonly offer "unlimited" or "full" retro to clients with continuous prior cover, but they may impose a more restrictive retro on a new account.

Run-off may be the answer instead of new retro. If the new insurer will not offer full retroactive cover, the alternative is to keep the old policy running as run-off — providing reporting cover for the period under which the old work was insured. This means paying two policies simultaneously for the run-off period (typically six years).

Notifiable circumstances must be flagged to the old insurer before you switch. Anything you know about that could give rise to a claim must be notified to the policy in force when you knew about it. Notification crystallises the cover under that policy. If you switch without notifying a known circumstance, you risk losing cover under both old and new policies — the old one because you cancelled it after you knew (and arguably should have notified), the new one because the circumstance was a known issue before inception.

Step-by-step: the practical switching sequence

Done properly, a mid-term switch follows this sequence:

Step 1 — Audit your current cover and any pending issues

Before you even look at alternatives, do an honest audit of your current position:

• What is your current policy's retroactive date?
• What is the current limit and excess?
• What is the unexpired term?
• Are there any notified claims, complaints, or circumstances on file?
• Are there any issues you are aware of that you have not notified but should consider notifying?
• Does your current insurer comply with any regulator minimum terms (SRA, ARB, RICS, ICAEW, ACCA — see Does my professional body require PI insurance?)?

This audit shapes what you can ask of a new insurer. A practice with notified circumstances on the existing policy is in a different negotiating position from one with a clean record.

Step 2 — Notify any pending circumstances to the existing insurer

If there is anything that could become a claim — a complaint from a client, a project where you suspect work fell below the required standard, an enquiry from a regulator — notify it to the existing insurer before any switch is contemplated.

This is not optional. Failure to notify a known circumstance during the policy period is a breach of the duty of fair presentation and can void cover on that policy. It also creates a "known issue" that the new insurer will exclude.

Notification crystallises the existing insurer's liability for the matter under the current policy. That cover continues to attach even after the policy is cancelled or expires, because the notification was made within the policy period.

Step 3 — Approach the market on your terms

With the audit done and known issues notified, approach the alternative market. If using a broker, they will present the risk to insurers; if buying direct or comparing schemes, you will need to provide the equivalent information.

The non-negotiable requirements:

• Cover at least equivalent to current (limit, excess, key extensions).
• Retroactive date no later than your current policy's retroactive date — ideally fully retroactive to inception of your earliest cover.
• Compliance with any regulator minimum terms if applicable.
• Acceptance of any notified circumstances as disclosed pre-inception items (which the new insurer will exclude, properly, because they are already attached to the previous policy).

A quote that does not match these requirements is not a like-for-like replacement and should not be treated as such.

Step 4 — Read the cancellation clause of your current policy

Before binding the new cover, read what your current policy says about cancellation. The clause is usually buried near the end of the policy schedule or general conditions. You are looking for:

• Notice period required — typically 14 or 30 days.
• Return of premium basis — pro rata, short-period, or minimum-and-deposit retained.
• Effective date of cancellation — usually the date of notification, sometimes the end of the notice period.
• Conditions on cancellation — some policies allow the insurer to refuse mid-term cancellation in certain circumstances, particularly where a claim has been notified.

Some policies set a minimum and deposit premium that is fully earned at inception — meaning even at month one of a twelve-month policy, no premium is refundable. Other policies are more pro-rata-friendly. The economics of switching depend significantly on this clause.

Step 5 — Sequence the cancellation and the new policy inception

This is the most common place where mid-term switches go wrong. The sequence must be:

1. Bind the new policy with effective date X (the proposed switch date).
2. Confirm in writing the new policy is in force, with cover note or schedule received.
3. Then notify the existing insurer of cancellation with effect from the same date X.

The order matters because cancelling first and binding later — even if the gap is only hours — creates a window during which no policy is in force. A claim notified in that window is uninsured. Brokers manage this routinely; if you are switching direct, the responsibility to sequence sits with you.

Step 6 — Confirm cancellation in writing and receive return-premium calculation

After cancellation, ask the old insurer (or old broker) for written confirmation of cancellation date and the return-premium calculation. Keep this on file. The return-premium calculation should match the cancellation clause; if it doesn't, query it before accepting.

Step 7 — File the old policy and the new policy together — and keep them

This is often overlooked. A claim that is notified next year may relate to work done during the old policy period. The new policy will respond — assuming retroactive cover is in order — but you and your broker will need both policy documents to handle the claim. Keep the schedule, the wording, and the cover note for the old policy permanently filed.

The retroactive-date trap — worked example

A small consultancy is on its third year with Insurer A. Retroactive date is the inception of year one — fully retroactive. Mid-policy in year three, the consultancy switches to Insurer B because of a premium dispute.

Insurer B offers a new policy with a retroactive date of "policy inception" — meaning today. Insurer B will respond to claims notified during its policy period that relate to work done during its policy period only. Anything from the first three years with Insurer A — work that the consultancy did between year one and the switch date — is not covered by Insurer B.

To preserve cover for that work, the consultancy has two options:

Option 1 — negotiate full retroactive cover with Insurer B. Some insurers will offer this, particularly with clean prior history. Insurer B's retro should then be the original Insurer A inception date, three years ago.

Option 2 — buy run-off cover from Insurer A. Even though Insurer A is no longer the live insurer, it will offer run-off cover for the three years of work it insured. Typically six years' run-off is standard. The consultancy pays Insurer A for run-off and Insurer B for going-forward cover until the six-year tail expires.

Option 1 is cheaper if available. Option 2 is the fallback when Insurer B will not extend retro.

The trap is that buyers see a new policy with attractive premium, do not read the retroactive date, and inadvertently sign up to Option 1's economics without Option 1's cover. The first notification on old work is then rejected by Insurer B (outside retro) and by Insurer A (policy cancelled). The work is uninsured.

This is why mid-term switching is genuinely riskier than renewal-time switching, where the question is naturally surfaced.

What to do if the old insurer makes the switch difficult

Insurers occasionally make mid-term cancellation difficult — pushing back on the cancellation request, applying minimum-and-deposit calculations that retain most of the premium, or imposing conditions. If this happens:

Re-read the policy. The contractual position should be clear. If the insurer's position is inconsistent with the wording, push back in writing.

Escalate within the insurer. Most insurers have an internal escalation route — typically the underwriting manager or the customer service team lead. Insist on a written explanation of the position.

Use the FCA complaints framework. If you believe the insurer is acting unreasonably, you have eight weeks to wait for a final response, after which you can refer to the Financial Ombudsman Service (FOS). Note that FOS jurisdiction for commercial customers depends on size — most micro-enterprises and small businesses are eligible. See the FOS website for current eligibility criteria.

Get the broker involved. If you are placed through a broker, escalation to the insurer through the broker is often faster because the broker has a placement relationship and direct underwriter contact.

In practice, mid-term cancellation disputes are rare. Most insurers will accept cancellation, apply the contractual return-premium calculation, and confirm cancellation within a few working days.

Tell the world: notifying clients, regulators, and contract counterparts

A change of PI insurer may need to be communicated outside the practice. Common obligations:

Clients with PI evidence requirements in their appointment. Many client contracts require certificate of insurance evidence and stipulate that any change be notified within a defined period. Read your standing client contracts before switching.

Regulators with cover-evidence requirements. Some regulators — particularly the SRA for solicitors — require updated certificate filings when cover changes. Check what your regulator requires.

Public-sector frameworks. Where you are on a procurement framework with insurance evidence requirements, you will typically need to upload a new certificate of insurance to the framework portal.

Professional body declarations. Most professional bodies require an annual PI declaration. Mid-year insurer changes do not usually require a new declaration, but the next annual declaration should reference the current insurer.

If you are unsure whether a counterpart needs to be notified, read the original contract or framework agreement. Brokers will usually flag these obligations as part of the placement.

How Apex helps with mid-term switches

We handle mid-term switches for clients where the case for moving is real and the sequencing is manageable. We start by working through whether switching now is genuinely better than running to renewal, because the answer is often "wait". Where switching is the right call, we present the risk to suitable insurers, negotiate retroactive cover, sequence the binding and cancellation properly, and document the change for any client or regulator notifications.

We will tell a client if the case for switching mid-term is not strong enough — running to renewal is usually less risky.

For an initial conversation about a mid-term switch, the contact page is the place to start. If you are weighing the broader broker-vs-direct question first, see Should I use a PI broker or buy direct?.

Frequently asked questions

Can I cancel my PI policy mid-term?

In most cases yes. UK PI policies typically include a mid-term cancellation provision allowing the policyholder to cancel with notice — commonly 14 or 30 days. Some policies have minimum-and-deposit premium clauses that limit how much premium is returned. Read your policy's cancellation clause before committing to a switch.

Will I get a refund if I cancel mid-term?

Usually a partial refund, calculated on a short-period or pro-rata basis depending on the policy. Some policies retain a minimum and deposit premium that is fully earned at inception. A six-month-old annual policy typically returns 30–45% of the gross premium, depending on the clause.

What is a retroactive date and why does it matter when switching?

The retroactive date is the earliest date back to which a claims-made policy will respond. When switching, the new policy's retroactive date must cover all the work you have done up to the switch date. If it does not, work done before the retroactive date is uninsured, even though the new policy is in force.

Do I have to tell the old insurer about any issues before I cancel?

Yes. Anything that could give rise to a claim — known issues, complaints, regulator enquiries — must be notified to the existing insurer before you cancel. Notification crystallises cover under that policy for the matter. Failure to notify a known circumstance is a breach of duty and can void cover under both the old and new policies.

Can I just let the old policy lapse and start a new one?

Letting a claims-made policy lapse without arranging retroactive cover or run-off means past work becomes uninsured. The new policy responds only from its inception date and only back to its retroactive date. Without continuous cover or run-off, you are personally exposed for the run-off period of past work.

How much does run-off cover cost?

Run-off pricing varies by profession and risk. As a rough guide, run-off on a sole-practitioner policy is often quoted at one to two times the final live-cover premium, paid annually for the run-off period (typically six years). Some insurers offer a single-payment run-off for the whole period at a discount.

Will my regulator object to a mid-term switch?

Most regulators do not object to a switch in itself — they require that cover meeting the minimum terms remains continuously in force. Some require notification or evidence filings. Check your regulator's PI declaration process before switching to avoid an unintended breach.

Do I need a broker to switch insurer mid-term?

Not strictly. You can switch direct if your replacement insurer accepts a direct application. In practice the sequencing — particularly the retroactive-date negotiation and the notification of known circumstances to the old insurer — is easier with a broker who handles the process daily. Switching mid-term direct is feasible but unforgiving of errors.

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Related guides

• Professional Indemnity Insurance overview
• Should I use a PI broker or buy direct?
• What to do if your PI claim is rejected
• Does my professional body require PI insurance?
• Contact Apex Insurance Brokers

About Apex Insurance Brokers — Apex Insurance Brokers Limited is authorised and regulated by the Financial Conduct Authority, FCA firm reference 724952. Registered in England and Wales, Companies House 07014570. Last reviewed: May 2026.