What is critical illness cover?
Critical illness cover pays a tax-free lump sum if you're diagnosed with a serious condition named on the policy — typically some forms of cancer, heart attack, stroke and a list of other defined conditions. The payout is yours to use however you need: clearing the mortgage, replacing lost income, or funding treatment and recovery without financial pressure on top of everything else.
What it's typically used for
- Paying off the mortgage — or a chunk of it — so one worry disappears.
- Replacing income while you're off work and recovering.
- Covering private treatment, home adaptations or extra childcare.
- Simply giving you breathing space, so recovery isn't rushed by money.
Combined or standalone?
Critical illness cover can be bought on its own or combined with life insurance in one policy. A combined plan usually costs less than two separate policies, and pays out on whichever happens first. The trade-off is that a combined policy generally ends after one claim — so if the payout is used for a critical illness, there may be nothing left for life cover. We'll talk through which structure fits your family best.
It's the definition that matters
Not all policies are equal. The list of conditions covered, and how strictly each condition is defined, varies meaningfully between insurers — and that's where cheap policies earn their price. When we recommend cover, we look at the quality of the definitions as well as the premium, so the policy does what you expect it to if you ever need it.
Children's cover is often included
Many quality policies include cover for your children at no extra cost, paying out if a child is diagnosed with a listed condition. It's one of the least-known features — and one of the reasons the cheapest policy on a comparison site isn't always the best value.
Common questions
What is critical illness cover?
It's an insurance policy that pays a tax-free lump sum if you're diagnosed with one of the serious illnesses listed on the policy — such as some forms of cancer, heart attack or stroke. Unlike life insurance, it pays out while you're still here, when the money can matter most.
Can I get critical illness cover without life insurance?
Yes — it can be bought on its own. That said, many people combine the two in a single policy, because it's often more cost-effective and covers both scenarios in one plan.
How much critical illness cover do I need?
A useful way to think about it: enough to clear debts like a mortgage, or to replace a year or two of income so you can focus on treatment and recovery rather than money. The right figure depends on your commitments — which is why it's worth talking it through rather than guessing.