Critical illness cover provides a financial safety net if you are diagnosed with a serious illness. With 1 in 2 people in the UK expected to develop cancer at some point in their lives, and around 100,000 heart attacks per year, the risk is real — and the financial impact can be devastating.
How It Works
- You choose a cover amount (e.g. £100,000) and term (e.g. 25 years)
- You pay monthly premiums
- If diagnosed with a qualifying condition during the term, you receive the lump sum
- The policy then ends
- If you do not claim during the term, the policy ends with no payout
What Conditions Are Covered?
All providers cover a core set of conditions. The ABI (Association of British Insurers) defines minimum standards:
| Condition Category | Examples |
|---|---|
| Cancer | Most cancers (some early-stage/non-invasive excluded) |
| Heart | Heart attack, coronary artery bypass, heart valve replacement |
| Brain/Nervous system | Stroke, multiple sclerosis, Parkinson’s disease, motor neurone disease |
| Organ | Kidney failure, major organ transplant, liver failure |
| Other | Total permanent disability, blindness, deafness, loss of limbs, coma |
Most policies cover 35–50+ conditions. The more conditions covered, the more comprehensive the policy.
What About Partial/Early-Stage Claims?
Many modern policies also offer additional payments for:
- Early-stage (in-situ) cancers
- Less severe conditions
- Children’s critical illness
These are often paid at 10–25% of the sum assured, with the main cover remaining.
Typical Costs
Monthly Premiums (Level, Non-Smoker)
| Age | £50,000 Cover (25 years) | £100,000 Cover (25 years) |
|---|---|---|
| 25 | £10–£18 | £18–£32 |
| 30 | £13–£22 | £22–£40 |
| 35 | £18–£30 | £30–£55 |
| 40 | £28–£50 | £50–£90 |
| 45 | £45–£85 | £85–£155 |
| 50 | £80–£150 | £150–£275 |
Smokers typically pay 50–100% more. Women often pay more than men due to higher breast cancer rates.
How Much Cover Do You Need?
| Purpose | How to Calculate |
|---|---|
| Pay off mortgage | Outstanding mortgage balance |
| Replace income for X years | Annual income × number of years |
| Fund treatment | Estimated costs of private treatment |
| Cover debts | Total outstanding unsecured debts |
| Combination | Mortgage + 2–3 years’ income |
Example
| Need | Amount |
|---|---|
| Mortgage | £200,000 |
| Income replacement (2 years) | £60,000 |
| Debts | £10,000 |
| Total cover | £270,000 |
Critical Illness vs Other Protection
| Feature | Critical Illness | Life Insurance | Income Protection |
|---|---|---|---|
| When it pays | Serious illness diagnosis | Death | Unable to work |
| What it pays | Lump sum | Lump sum | Monthly income |
| Conditions | Listed conditions only | Death or terminal illness | Any illness/injury |
| Duration of benefit | One-off payment | One-off payment | Until return to work or retirement |
| Cost (relative) | Most expensive | Cheapest | Middle |
| Ongoing support | No | No | Yes (regular payments) |
Which Do You Need?
| Situation | Recommended |
|---|---|
| Have a mortgage/dependants | Life insurance (minimum) |
| Worried about serious illness | Critical illness cover |
| Main earner, need income if unable to work | Income protection |
| Comprehensive protection | All three (or at least life + income protection) |
Tips for Buying
- Buy early — premiums are much cheaper when young and healthy
- Disclose everything — non-disclosure can invalidate a claim
- Check definitions — some providers have stricter definitions than others
- Compare cover quality — not just price (Defaqto ratings help)
- Consider combined cover — life insurance + critical illness together is cheaper than separate policies
- Use an independent broker — they can access the whole market
- Choose level premiums — guaranteed premiums are more predictable than reviewable ones
Common Claim Scenarios
| Scenario | Outcome |
|---|---|
| Cancer diagnosis (invasive) | Full payout |
| Heart attack (meeting severity criteria) | Full payout |
| Stroke (lasting neurological deficit) | Full payout |
| Early-stage cancer (non-invasive) | Partial payout or additional payment (policy-dependent) |
| Condition not on the list | No payout |
| Condition developed before policy started | No payout |
For broader financial protection, see our life insurance guide and income protection guide.