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Critical illness cover — sometimes sold as critical illness insurance — releases a single tax-free lump sum on diagnosis of one of the specific serious conditions named in the contract. Typical uses: clearing or reducing a mortgage, funding treatment that sits outside the NHS pathway, or buying time for a partner to step back from work during recovery.
By: LifePro Protection Team · Updated: 29th April 2026
Critical illness cover provides a tax-free cash lump sum if you're diagnosed with a serious illness specified in your policy. You can use the money however you need - from covering living costs during recovery to paying for private treatment or clearing your mortgage.
Unlike income protection (which replaces your salary), critical illness cover gives you a one-off payment when you're diagnosed with a covered condition. This can be particularly valuable for:
Critical illness cover can be purchased as a standalone policy or combined with life insurance for comprehensive protection.
The conditions covered and their definitions vary by policy. Check the current policy document for the full list, partial-payment provisions, exclusions and survival periods.
Standard conditions covered include:
Many policies also include 'additional payment conditions' for early-stage or less severe diagnoses, typically paying 10-25% of your cover amount for conditions like:
It's important to read policy definitions carefully, as conditions must meet specific severity criteria to qualify for a full payout.
Critical illness cover costs vary based on your age, health, lifestyle, occupation, cover amount, policy term and the insurer's underwriting decision.
Factors affecting your premiums:
Premiums are personalised rather than fixed examples. Compare the quoted premium alongside the covered-condition definitions, exclusions, survival period and policy term.
LifePro compares quotes, covered-condition definitions, exclusions and premiums available from a wide range of UK insurers.
You can choose from several types of critical illness cover depending on your needs:
Pure critical illness protection with no life insurance element. Pays out only if you're diagnosed with a covered condition during the policy term. Most cost-effective if you already have life insurance separately.
Combined policy providing both life insurance and critical illness protection. Pays out on diagnosis of a covered condition OR on death (whichever happens first). Most popular option for comprehensive family protection.
Separate pots for life insurance and critical illness - can pay out on both. More expensive but provides dual protection, paying for critical illness and still leaving life cover in place.
Optional add-on covering your children for serious illnesses. Typically pays £25,000-£50,000 if your child is diagnosed with a covered condition. Small additional premium for valuable protection.
You can also choose between:
The case for critical illness cover is strongest where there is a meaningful financial obligation behind you — most often a mortgage, a young family, or both — and not enough liquid savings to ride out an extended period of treatment without disturbing the household's standard of living.
Critical illness cover is particularly valuable if:
You might not need critical illness cover if:
Remember: 1 in 8 men and 1 in 10 women will suffer a critical illness before retirement age. Critical illness cover provides financial peace of mind when you need it most.
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Compare Quotes »Critical illness cover pays a one-off lump sum when you're diagnosed with a covered condition, while income protection replaces a percentage of your salary every month if you can't work due to any illness or injury. Critical illness is for specific serious conditions; income protection covers any health issue preventing you from working. Many people have both for comprehensive protection.
It depends on the condition, severity, treatment and current health. An insurer may offer standard terms, change the premium, add an exclusion or decline the application. Compare the personalised terms available and answer all health questions accurately.
Standard critical illness policies don't usually cover mental health conditions like depression or anxiety. However, some policies may cover severe conditions like permanent neurological impairment or total permanent disability resulting from mental illness. Mental health support is typically better covered by income protection insurance.
If you reach the end of your policy term without making a claim, the policy expires and you receive nothing back. Critical illness cover is protection insurance, not an investment - you're paying for peace of mind and financial security. Some policies offer optional premiums back or partial return of premiums for an additional cost.
Most policies pay out once and then end. However, some insurers offer 'additional payment cover' or 'multi-claim' options that allow claims for different conditions. After claiming for an additional payment condition (10-25% payout), your main cover usually continues. Always check your policy terms.
Most claims are paid within 4-8 weeks once the insurer has all required medical evidence. Some conditions require a survival period (typically 14-28 days after diagnosis) before payment. The claims process involves providing medical reports and evidence that your condition meets the policy definition.
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LifePro can compare critical-illness policies from a range of UK insurers. Review the personalised premium, covered-condition definitions, exclusions and policy terms. There is no broker fee or obligation to buy.
