Critical Illness Insurance UK - Cover, Costs and Mortgage Protection Guide 2026
Understand how critical illness insurance works in the UK, what medical conditions it covers, how much protection costs and why it matters for homeowners, families and mortgage borrowers.
Critical illness insurance is a form of financial protection designed to provide a lump-sum payment if the policyholder is diagnosed with a specified serious medical condition that meets the insurer's policy definition.
For homeowners, mortgage borrowers, families and self-employed individuals, a serious illness can create financial pressure through reduced earnings, additional household expenses and ongoing mortgage or rental commitments.
A critical illness insurance payout may help cover mortgage repayments, reduce outstanding debt, pay essential living expenses or provide financial flexibility during treatment and recovery.
However, not every illness is covered, and policies can differ significantly in their definitions, exclusions, premiums and payment conditions.
Understanding these differences is essential before choosing a policy.
Fraser Bond, a UK property agency and real estate consultancy, supports buyers, sellers, landlords and investors with residential property transactions, lettings and property management across London and the wider UK.
This guide explains what critical illness insurance means, how it works, which conditions may be covered, how premiums are calculated and how this type of protection relates to property ownership and mortgage affordability.
What Is Critical Illness Insurance?
Critical illness insurance is a protection policy that pays a specified amount
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