Your health is rarely a fixed point. A clean bill of health today may be followed by a new diagnosis tomorrow, and medical advances mean many conditions are managed for years rather than ending lives early. Understandably, people worry about how a change in health might affect their life insurance. Will premiums go up? Could the policy be cancelled? Will a future claim be paid? This article explains how most UK policies work, the safeguards already built in, and the situations that call for a review of your cover.
The Critical Moment: Application and Underwriting
For most policies, the only time your health can directly influence the price you pay is before the cover starts. During the underwriting process, an insurer looks at factors such as age, medical history, family history, lifestyle and occupation to decide whether to accept you, on what terms, and at what premium. Once the policy begins, the contract is largely set in stone.
Why full disclosure matters
UK insurers pay the overwhelming majority of claims. According to the Association of British Insurers (ABI), 97% of life insurance claims were paid in 2022. The small percentage of declined claims is dominated by non-disclosure – situations where the applicant held back information that would have influenced the underwriting decision. Insurers investigate non-disclosure primarily at the claim stage, not while you are paying premiums. Being open about every “material fact” at application is the single best way to protect yourself from problems later.
After Your Policy Starts: Guaranteed vs Reviewable Premiums
Once you have a life insurance policy, two broad pricing structures exist:
- Guaranteed premiums – fixed at outset and will never change, no matter how your health develops.
- Reviewable premiums – subject to periodic reviews (often every five years). An insurer can raise or lower the premium for whole groups of customers to reflect claims experience and wider market factors but not your individual change in health.
If your policy has guaranteed premiums (most standard term policies do), a diagnosis such as diabetes, cancer, or depression makes no difference to the amount you pay or to the validity of the cover, provided you disclosed everything correctly when you applied.
Can an Insurer Cancel My Policy Because My Health Got Worse?
No, not if you answered honestly on the application. Life insurance in the UK is a unilateral contract requiring you to keep up premiums; in return, the insurer promises to pay out if the insured person dies (or suffers a covered critical illness, if included). The insurer cannot cancel purely because your personal risk has increased.
Exceptions to be aware of
- Non-payment of premiums – if you stop paying, the cover lapses.
- Policy expiry – a term policy ends naturally after its term.
- Fraud or misrepresentation – deliberate or reckless non-disclosure gives the insurer the right to void the contract.
Changing health on its own is not a valid reason for termination.
Why You Might Review Your Cover After a Health Change
Even though your existing policy continues unaffected, your protection needs could shift dramatically:
- You may wish to increase cover because a condition shortens life expectancy.
- Dependants may suddenly rely more on your income.
- Extra costs such as home modifications or private treatment might arise.
At this point you have several options.
Guaranteed Insurability Options (GIOs)
Many modern policies include a GIO that allows you to increase the sum assured when certain life events occur – for example marriage, birth of a child or a larger mortgage – without any fresh medical underwriting. Note the triggers are life events rather than health events, so you generally cannot rely on a GIO simply because you became ill. However, if you were recently married or moved house, you might be able to exercise the option even while living with a new medical condition.
Taking additional cover
If you do not have a relevant GIO, you can apply for a fresh policy. Underwriting will assess your health at the time of application, so premiums could indeed be higher or exclusions applied. This does not impact the pricing or validity of your original plan.
Switching policies
People sometimes replace an old plan with a newer, cheaper one. If your health has deteriorated, switching rarely makes sense because you would lose the favourable terms of the existing cover. Always compare like-for-like and remember you are not obliged to cancel one policy in order to take out another; running policies side-by-side is perfectly acceptable.
Critical Illness Cover and Income Protection: Special Considerations
If you have critical illness cover attached to your life insurance, the policy will list exactly which conditions trigger a lump-sum payout. The ABI reports that cancer accounts for 60% of critical illness claims, with heart attack (11%) and stroke (6%) following behind. As long as the diagnosis matches the policy wording – for example, an invasive cancer as opposed to a non-invasive carcinoma in situ – the insurer will pay even if the condition develops many years after you bought the policy.
Income protection works similarly: once accepted, the insurer cannot raise premiums because you later become unwell. Premiums can increase only under pre-agreed indexation or reviewable structures that apply equally to the whole customer cohort.
The Role of the FCA’s Consumer Duty
The Financial Conduct Authority’s new Consumer Duty (in force since July 2023) mandates that insurers provide clear, fair information and support good customer outcomes. Firms must help customers understand:
- Which disclosures are required at application.
- How claims will be assessed.
- What happens if health changes.
The Duty should lead to simpler wording in policy documents and a reduced risk of customers inadvertently invalidating cover through misunderstanding.
Mental Health and Post-Pandemic Underwriting Trends
The COVID-19 pandemic highlighted how global events can influence underwriting. In 2020, several insurers restricted cover for people with recent COVID infections or significant respiratory complications. Those temporary rules have largely been lifted, so someone who had COVID-19 but recovered fully is usually accepted on standard terms.
Mental health is another evolving area. Historically, applications mentioning depression or anxiety often attracted higher premiums or exclusions. Insurers now use more nuanced questionnaires and increasingly accept well-managed conditions at normal rates. If you develop a mental health issue after you already hold a policy, your premiums stay untouched.
Practical Steps When Your Health Changes
- Read your policy schedule and wording – remind yourself whether premiums are guaranteed, whether you have a GIO, and which conditions are covered under any critical illness rider.
- Check premium affordability – if illness affects your earning ability, speak to your insurer. Many offer payment holidays or waiver of premium benefits if you meet their disability definitions.
- Consider additional cover – calculate whether new financial responsibilities justify extra life or critical illness insurance. Compare quotes but keep the existing cover running until any new plan is active.
- Update beneficiaries and wills – significant health changes often prompt estate planning reviews.
- Speak to an independent adviser – a broker can determine whether you can exercise a GIO, whether a standalone critical illness policy makes sense, or if income protection would be more beneficial.
Common Myths Debunked
- “My premiums will sky-rocket if I fall ill.” – Not true for guaranteed premiums. Once locked in, they do not change.
- “The insurer can use my new diagnosis as an excuse not to pay.” – As long as you disclosed material facts initially, a later diagnosis is irrelevant. 97% of claims are paid.
- “I should cancel my old policy and buy a new one when I get healthier.” – You can apply for new cover if health improves, but cancel only after the new policy is in force and you have checked it truly is better value.
Case Example (Hypothetical)
Amira, 35, took out a £250,000 level term policy in 2019 with guaranteed premiums of £15 a month. Two years later she was diagnosed with multiple sclerosis (MS). Her premiums remained £15 because the contract was already in place. Amira’s mortgage balance had fallen only slightly, and she now anticipated higher care costs in the future. She consulted a broker who confirmed that her policy contained no GIO relevant to illness. Taking new cover would involve underwriting and attract a higher premium, but she decided to add a smaller £100,000 decreasing term policy rather than disturb the original plan. The combination still cost less than starting one brand-new £350,000 policy on post-MS rates.
Frequently Asked Questions
Will my insurer access my medical records every year?
No. Insurers may request GP reports at application and occasionally when assessing claims. Routine annual checks do not take place.
If I start smoking after taking out cover, does the insurer need to know?
For traditional guaranteed-premium life insurance, you do not have to inform the insurer. Reviewable policies may ask for lifestyle updates at the review point, but smokers are not singled out once cover is already running.
Can I claim on critical illness cover for a condition diagnosed within the policy’s waiting period?
Most critical illness policies apply no waiting period beyond the policy start date, but some impose a survival period (e.g., 14 days) between diagnosis and payout. Check your wording.
Putting It All Together
Life insurance is designed to give long-term certainty. Once in force, the cover and premium structure generally ignore any changes in your personal health. The key responsibilities fall at two points:
- At application – disclose everything truthfully.
- Throughout the policy – pay premiums on time.
If you become ill, the policy you already own could be the best cover you will ever have, because insurers cannot retrospectively add exclusions or load premiums. Your focus should be on whether the level of protection still matches your needs, not whether the existing cover remains valid.
Final Thoughts
Your health may change, but a well-structured life insurance policy should continue to perform exactly as promised. In an era where UK insurers pay out over £18 million in protection claims every day, the evidence shows the system works when customers engage honestly and maintain their premiums. Review your cover periodically, seek advice when circumstances shift, and you can face health uncertainties with far greater financial confidence.