How to Switch Private Health Insurance Without Losing Cover UK (2026)

Switching private health insurance is one of the most misunderstood processes in the UK PMI market. Done correctly, you can move to a cheaper or better policy without losing continuity of cover for conditions that were already accepted under your old insurer. Done incorrectly, you can inadvertently restart a moratorium clock on a condition that was weeks away from becoming eligible, or lose a no-claims discount you've spent years building.

This guide explains exactly what to check and in what order before you cancel anything. If you're not yet familiar with how PMI works as a product, our beginner's guide to private health insurance covers the fundamentals before you start comparing switching options.

The single most important rule: never cancel before you have the new policy confirmed in writing

This sounds obvious but is the most common switching mistake. If you cancel your existing policy first and then discover the new insurer applies more restrictive exclusions than expected, you have a gap in cover and no guaranteed right to return to your old insurer on the same terms. Always have the new policy documented and confirmed — including the specific exclusions that will apply — before you give notice on the old one.

CPME — the term that makes or breaks a switch

Continued Personal Medical Exclusions (CPME) is the mechanism that allows you to switch insurers without being treated as a brand-new applicant. Under CPME, a new insurer agrees to apply only the same exclusions that existed under your old policy — rather than starting a fresh moratorium or requiring a new full medical history review.

Practically, this means:

• A condition that was progressing toward moratorium clearance under your old insurer continues on the same clock, rather than restarting
• Conditions that were explicitly accepted under your old policy can often be carried across
• You don't lose years of moratorium progress by switching

Not every insurer offers CPME, and those that do may apply it differently. Ask explicitly: "Will you match my existing exclusions under CPME?" and get the answer in writing, not verbally.

No-claims discount transfer

Your no-claims discount (NCD) is typically transferable between insurers — you'll need your old insurer to provide a letter showing your NCD level, which the new insurer can then honour at entry. As with CPME, ask about this specifically and don't assume it transfers automatically.

The value of this depends on how many years of NCD you've accumulated. For a policy with several years of NCD built up, the difference between a new insurer honouring it versus starting at zero can be 30-40% of the annual premium.

When switching makes most sense — and when to wait

Good times to switch:

• At renewal — insurers apply underwriting adjustments at renewal, not mid-term, so switching at the end of your policy year is cleanest
• When you've received a significant renewal increase without a claims history to justify it
• When you haven't claimed for several years and your NCD is at or near maximum — you have the most leverage as a low-risk applicant at this point

Times to think carefully before switching:

• If you're mid-moratorium on a condition you expect to clear soon — switching may reset the clock depending on the new insurer's terms, even under CPME
• If you've recently claimed — your NCD will be reduced, and a new insurer applying fresh underwriting may see a worse picture than your existing insurer renewing you at the higher (post-claim) rate
• If you're over 60 — the older you are at the point of switching, the more likely a new insurer is to see undisclosed conditions as pre-existing, making the underwriting conversation more complex

The actual switching process, step by step

1. Get your existing policy documents out — specifically the exclusions schedule, your current excess, outpatient limits, and your NCD level
2. Compare like-for-like quotes — use a comparison tool to find alternatives with matching cover levels, not just cheaper headline premiums with a higher excess or lower outpatient cap
3. Ask each shortlisted insurer two specific questions: "Will you apply CPME to my existing exclusions?" and "Will you honour my existing NCD level?"
4. Get the answers in writing — email confirmation, not a phone conversation
5. Request a no-claims discount letter from your existing insurer — this is a standard request, they're obliged to provide it
6. Confirm the new policy is live — policy documents in hand, exclusions confirmed, payment set up
7. Only then give notice to cancel your existing policy, effective from the same date the new one starts with no gap

Which insurers are most flexible for switchers

National Friendly does not ask lifetime "have you ever" medical history questions on its moratorium applications — this makes it significantly more accessible for switchers with a longer medical history than insurers who require full disclosure going back indefinitely.

The Exeter has a well-documented approach to fair underwriting for people with more complex histories, and its CPME process is considered straightforward by brokers who handle switches regularly.

Aviva and Bupa both support CPME transfers and NCD matching, with the standard requirements of a no-claims discount letter from the previous insurer.

Should you use a broker to switch?

For straightforward switches — healthy applicant, clean NCD, no complex medical history — doing it yourself via a comparison site is entirely reasonable. For anything more complicated (pre-existing conditions, a history of claims, over 60, or a specific condition approaching moratorium clearance), a whole-of-market broker can add genuine value by knowing which insurer's underwriting team is most likely to apply CPME favourably for your specific history. Their service is typically free since they're paid by the insurer.

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This guide is for general educational information only and is not financial or insurance advice. CPME terms, NCD transfer policies, and underwriting approaches vary by insurer and can change. Always confirm current terms directly with the insurer or a regulated broker before cancelling any existing policy.