How to Choose Private Health Insurance in the UK: What to Look For

Choosing private health insurance in the UK is not just about finding the cheapest monthly premium. A policy that looks affordable can become disappointing if it has weak outpatient cover, a restricted hospital list, poor cancer cover, strict exclusions or unclear rules around pre-existing conditions.

Private health insurance, also called private medical insurance or PMI, can be valuable when it gives you faster access to eligible private diagnosis and treatment. But it is not a replacement for the NHS, and it does not cover every condition, test, scan, medicine or hospital bill. The best policy is the one that matches your health risks, budget, location, family situation and expectations.

This guide explains what to look for when choosing private health insurance in the UK, how to compare policies properly, what questions to ask before buying, and the common traps that lead to refused claims or unexpected bills.

First, be clear about what private health insurance is for

Private health insurance is usually designed to cover eligible private treatment for new, acute medical conditions. An acute condition is generally a medical problem that is likely to respond to treatment and return you to your previous state of health.

For example, a policy may help with:

• a new joint injury that needs assessment and treatment;
• a hernia that needs planned surgery;
• new symptoms that need specialist investigation;
• eligible cancer diagnosis and treatment;
• physiotherapy for a new musculoskeletal problem;
• private scans, tests or consultations if included in your policy.

But PMI is usually not designed to cover emergency care, routine GP care, normal pregnancy, cosmetic surgery, everyday dental treatment, or long-term management of chronic conditions.

If you are still deciding whether insurance is the right route at all, read: NHS vs private healthcare: when does insurance actually make sense?

Start with your reason for buying cover

Before comparing policies, ask yourself why you want private health insurance. This matters because different reasons require different levels of cover.

If you want faster diagnosis

You should pay close attention to outpatient cover, specialist consultations, scans and diagnostic tests. A very basic policy may not give you the fast diagnostic access you expect.

If you want private surgery cover

You need to look carefully at inpatient and day-patient treatment, hospital lists, consultant fees, anaesthetist fees, post-operative care and shortfall risks.

If you want cancer cover

You should compare the cancer wording in detail. Look beyond the phrase “cancer cover” and check what is included at diagnosis, treatment, follow-up and advanced drug stages.

If you want mental health support

Do not assume it is included. Some policies include mental health cover, some offer it as an add-on, and some have strict limits.

If you are self-employed

You may value speed, physiotherapy, diagnostics and planned treatment because long waits can affect your income. The cheapest policy may not be the best fit if it leaves gaps in the areas most likely to keep you working.

If you want family cover

Check child-specific benefits, outpatient access, therapies, mental health support and whether every family member is underwritten in the same way.

Understand the main types of cover

Private health insurance policies are built from different sections. Understanding these sections makes it easier to compare one policy with another.

Inpatient cover

Inpatient cover applies when you are admitted to hospital and stay overnight. It may cover hospital accommodation, nursing care, theatre fees, consultant fees and treatment costs, depending on the policy.

Day-patient cover

Day-patient cover applies when you are admitted for treatment but do not stay overnight. Many planned procedures are carried out this way.

Outpatient cover

Outpatient cover applies when you are not admitted to hospital. This can include specialist consultations, diagnostic tests, scans and follow-up appointments.

This is one of the most important areas to check. Many people buy health insurance because they want faster answers, but faster answers usually depend on outpatient appointments and diagnostics.

Diagnostic cover

Diagnostic cover may include MRI scans, CT scans, ultrasound, X-rays, ECGs, blood tests, endoscopy and other investigations. Some policies cover diagnostics generously, while others limit them unless you add enhanced outpatient cover.

For useful background, see How to understand scan results, MRI scan: what it shows and CT scan: what it shows and how it differs from MRI.

Therapies cover

This may include physiotherapy, osteopathy, chiropractic treatment, podiatry or other therapies. Some insurers offer direct access to physiotherapy for musculoskeletal problems, while others require referral.

Mental health cover

Mental health cover may include therapy, counselling, psychologist appointments, psychiatric consultations or inpatient mental health treatment. Limits often apply.

If mental health is a priority, also read Mental health support options in the UK.

Cancer cover

Cancer cover can include diagnosis, surgery, chemotherapy, radiotherapy, targeted therapies, immunotherapy, follow-up scans and palliative care. However, policy wording varies significantly.

The most important things to look for in a private health insurance policy

1. Outpatient cover

Outpatient cover is often where cheaper policies cut costs. This matters because many healthcare journeys begin with a specialist consultation, scan or test.

When comparing outpatient cover, ask:

• Are specialist consultations covered?
• Is there an annual outpatient limit?
• Are MRI, CT and ultrasound scans included?
• Are blood tests covered?
• Are follow-up appointments covered?
• Do I need a GP referral?
• Do I need insurer authorisation before booking?

A policy with strong hospital treatment but weak outpatient cover may still leave you paying privately for the diagnostic stage.

2. Cancer cover

Cancer cover is one of the biggest reasons people buy private health insurance. But “cancer cover” can mean different things depending on the insurer.

Check whether the policy includes:

• diagnostic tests for suspected cancer;
• specialist consultations;
• surgery;
• chemotherapy;
• radiotherapy;
• targeted therapies;
• immunotherapy;
• follow-up scans;
• monitoring after treatment;
• palliative care;
• access to specialist cancer hospitals.

Also check whether there are limits on drug treatments, hospital access or follow-up care. Do not rely only on marketing terms such as “comprehensive” or “advanced”.

3. Hospital list

Your hospital list controls where you can receive private treatment. A restricted hospital list may reduce your premium, but it may also limit your choices.

Before buying, check:

• which hospitals are included near your home;
• whether your preferred local private hospital is included;
• whether London hospitals are included or excluded;
• whether specialist centres are included;
• whether the hospital list changes at renewal;
• whether using a non-approved hospital creates extra costs.

A cheaper policy is not good value if the covered hospitals are inconvenient, unsuitable or too limited for your needs.

4. Consultant choice

Some policies allow broad consultant choice. Others use a guided consultant option, where the insurer gives you a shortlist or requires you to choose from its approved network.

Guided options can reduce premiums, but they reduce flexibility. They may be fine if you are happy to use the insurer’s pathway. They may not be ideal if you want a particular consultant, hospital or specialist centre.

5. Excess

An excess is the amount you pay towards a claim. For example, if your policy has a £250 excess, you may pay the first £250 of eligible treatment costs.

A higher excess usually lowers the monthly premium. This can work well if you mainly want protection against large private bills. It may work less well if you expect smaller claims, because you may end up paying much of the cost yourself.

Check:

• how much the excess is;
• whether it applies once per year or per claim;
• whether every person on a family policy has a separate excess;
• whether the excess applies to outpatient care;
• whether you could comfortably pay it at short notice.

6. Benefit limits

Benefit limits cap how much the insurer will pay for certain types of care. These limits can make two policies with similar names very different in practice.

Watch for limits on:

• outpatient consultations;
• diagnostic tests;
• physiotherapy sessions;
• mental health treatment;
• cancer drugs;
• home nursing;
• alternative therapies;
• private ambulance transfer;
• parent accommodation for children.

Some limits are annual. Others are per condition or per claim. Always check how they work.

7. Pre-existing condition rules

This is one of the most important areas of private health insurance. Most individual PMI policies do not automatically cover medical problems you already had before the policy started.

A pre-existing condition may include:

• a diagnosis you already had;
• symptoms you had before joining;
• a condition you were waiting to have investigated;
• previous treatment in the same body area;
• medication you were already taking;
• a recurring problem that has happened before.

For example, if you already have back pain, knee pain, heart symptoms, anxiety, digestive symptoms or a suspicious lump before buying insurance, claims related to that problem may be excluded.

The Financial Ombudsman regularly deals with complaints about claims declined because of pre-existing conditions, so this is not a minor detail. You need to understand it before buying.

Moratorium vs full medical underwriting

When you apply for private health insurance, the insurer needs a method for dealing with your medical history. This is called underwriting.

Full medical underwriting

With full medical underwriting, you answer detailed questions about your health and lifestyle before the policy starts. The insurer then tells you whether any conditions are excluded.

The advantage is clarity. You are more likely to know upfront what is and is not covered. The disadvantage is that the application takes longer, and you must provide accurate information.

Moratorium underwriting

With moratorium underwriting, you usually answer fewer health questions at the start. Instead, the insurer applies rules that exclude recent pre-existing conditions for a set period. Whether something is covered may only become clear when you claim.

This can make the application quicker, but it creates more uncertainty. You may not know until later whether a past symptom or condition affects your claim.

Which is better?

There is no single best option. Full medical underwriting may suit people who want clarity upfront. Moratorium underwriting may suit people who want a quicker application and have a simple medical history. If you have past conditions, regular symptoms or previous investigations, advice from a specialist broker can be useful.

Check what is excluded

Every private health insurance policy has exclusions. These exclusions are not small print you can ignore; they decide whether the policy will actually help when you need it.

Common exclusions may include:

• emergency treatment and A&E care;
• pre-existing conditions;
• routine chronic condition management;
• normal pregnancy and childbirth;
• cosmetic treatment;
• routine dental care;
• routine optical care;
• fertility treatment;
• gender reassignment treatment;
• experimental or unproven treatment;
• self-inflicted injury;
• treatment abroad unless specifically included;
• treatment not authorised by the insurer.

Exclusions vary, so check your actual policy wording rather than relying on general assumptions.

Do not ignore chronic condition wording

Private medical insurance is usually designed around acute conditions, not long-term chronic condition management. This is a common source of confusion.

Examples of chronic conditions may include:

• diabetes;
• asthma;
• high blood pressure;
• arthritis;
• epilepsy;
• COPD;
• inflammatory bowel disease;
• chronic kidney disease;
• some long-term mental health conditions.

A policy may cover an acute flare-up or investigation in some circumstances, but it may not cover ongoing monitoring, maintenance medication or indefinite specialist follow-up.

If you want private healthcare mainly because you already have a chronic condition, read the wording carefully and ask the insurer direct questions before buying.

Look carefully at mental health cover

Mental health cover has become increasingly important, but it varies widely between policies.

Check whether the policy covers:

• talking therapy;
• CBT;
• psychology appointments;
• psychiatry appointments;
• inpatient mental health treatment;
• neurodevelopmental assessments;
• medication reviews;
• crisis care;
• long-term or recurring mental health conditions.

Some policies may cover a limited number of therapy sessions but not inpatient care. Others may exclude pre-existing mental health conditions. If this area matters to you, do not assume basic cover is enough.

Check physiotherapy and musculoskeletal pathways

Back pain, knee pain, shoulder problems and sports injuries are common reasons people use private healthcare. Physiotherapy cover can be very practical, especially if you want early treatment.

Ask:

• Can I access physiotherapy directly?
• Do I need a GP referral?
• Do I need to use an approved provider?
• How many sessions are covered?
• Are scans covered if physiotherapy does not help?
• Are consultant appointments included if needed?

For related patient guides, see Lower back pain: the complete guide and Knee pain: causes, diagnosis and treatment in the UK.

Check the claims process before you need to claim

A policy can look good on paper but still be frustrating if the claims process is slow or unclear.

Before buying, ask:

• Do I need to call before every appointment?
• Can I claim online?
• Do I need a GP referral?
• Can I self-refer for physiotherapy or mental health?
• How quickly are claims authorised?
• Will the insurer pay the hospital directly?
• What happens if the consultant recommends further tests?
• What information will the insurer ask from my GP?

In most cases, it is safest to contact the insurer before booking private consultations, tests or treatment. Treatment that is not pre-authorised may not be paid.

Understand shortfalls

A shortfall happens when a consultant, anaesthetist or hospital charges more than the insurer agrees to pay. You may then be asked to pay the difference.

To reduce this risk, ask:

• Does the consultant charge within the insurer’s fee schedule?
• Will there be any extra fees?
• Are anaesthetist fees covered?
• Are follow-up appointments included?
• Will the hospital invoice the insurer directly?

Do not assume that “approved consultant” always means “no shortfall”. Ask before treatment begins.

Compare monthly price with real cover

The cheapest policy is not always the best value. A lower premium may mean:

• limited outpatient cover;
• restricted scans and tests;
• higher excess;
• smaller hospital list;
• guided consultant choice;
• weaker mental health cover;
• limits on therapies;
• less generous cancer cover.

That may be fine if you understand the trade-off. It is a problem only when you expect comprehensive cover but buy a stripped-back policy.

For cost background, read: How much does private health insurance cost in the UK?

Think about renewal, not just year one

Private health insurance is usually renewed annually. The first-year price may not tell you what the policy will cost in five or ten years.

Premiums may rise because of:

• age;
• medical inflation;
• claims history;
• changes to insurer pricing;
• changes to benefits;
• changes to tax or regulation;
• changes to your postcode or family members.

If the policy becomes unaffordable later, switching insurer may not be simple. Any conditions you developed while insured may be treated as pre-existing by a new insurer.

Before buying, ask whether you could realistically afford the policy if the premium increased over time.

Individual, couple, family or company cover?

Individual cover

Individual cover may suit freelancers, self-employed people, retirees or anyone without workplace health insurance. It gives you control over your policy, but you pay the full premium yourself.

Couples cover

A couples policy can be convenient, but it is not automatically cheaper than two individual policies. If one partner is older or has different needs, compare both options.

Family cover

Family cover may be useful if you want children included. Check child-specific benefits such as parent accommodation, child mental health support, outpatient care and therapies.

Company health insurance

Employer-provided PMI can be valuable because your employer may pay part or all of the premium. But check whether your family is included, whether pre-existing conditions are covered, and what happens if you leave the job.

Should you use a broker?

You can buy private health insurance directly from an insurer, through a comparison site or through a broker. A broker may be useful if:

• you have a medical history;
• you are older;
• you want family cover;
• you are self-employed;
• you want business or employee cover;
• you are comparing complex policies;
• you want help understanding underwriting.

A good broker should explain their commission, compare suitable options and help you understand exclusions. Do not use a broker who only pushes the cheapest premium without explaining the trade-offs.

Private health insurance vs health cash plan

A health cash plan is not the same as private medical insurance.

A cash plan may reimburse smaller everyday healthcare costs such as:

• dental check-ups;
• eye tests;
• glasses;
• physiotherapy;
• health screenings;
• chiropody;
• some consultations.

PMI is usually designed for larger eligible private medical costs, such as consultations, diagnostics, hospital treatment and surgery.

If your main concern is routine dental and optical costs, a cash plan may be more relevant. If your concern is private hospital treatment, PMI is usually the more relevant product.

Private GP services vs private health insurance

Private GP subscriptions and online GP services can be helpful, but they are not a replacement for full private health insurance.

A private GP service may help with:

• same-day appointments;
• video consultations;
• private prescriptions;
• referral letters;
• basic health advice.

But it may not pay for specialist treatment, scans, surgery or private hospital fees. For that, you usually need self-pay private care or PMI.

For more detail, see Private GP services in the UK: costs and what to expect.

Red flags when comparing policies

Be cautious if:

• the policy is much cheaper than others but you cannot see why;
• outpatient cover is missing or very limited;
• cancer cover has unclear limits;
• the hospital list is too restricted for your area;
• the excess is higher than you could comfortably pay;
• mental health is excluded even though you want it;
• the insurer will not clearly explain pre-existing condition rules;
• you are told not to worry about the policy wording;
• you feel pressured to buy quickly;
• you do not understand how claims are authorised.

Questions to ask before buying private health insurance

• What is covered as standard?
• What is not covered?
• Are outpatient consultations included?
• Are diagnostic tests and scans included?
• What cancer cover is included?
• Is mental health cover included?
• Is physiotherapy included?
• Which hospitals can I use?
• Can I choose my consultant?
• What excess applies?
• Are there annual limits?
• How are pre-existing conditions treated?
• Is the policy full medical underwriting or moratorium underwriting?
• Do I need GP referral before claiming?
• Do I need pre-authorisation before every appointment?
• Could I face shortfalls?
• How might premiums increase at renewal?
• Can I add or remove family members later?
• What happens if I move house?
• What happens if I want to switch insurer later?

A simple comparison table you can use

Feature	Policy A	Policy B	Policy C
Monthly premium
Annual premium
Excess
Outpatient cover
Diagnostic scans
Cancer cover
Mental health cover
Physiotherapy
Hospital list
Consultant choice
Underwriting type
Pre-existing condition rules
Main exclusions
Best suited for

Common mistakes to avoid

Choosing only by price

Price matters, but the cheapest policy may exclude the very things you care about most.

Ignoring outpatient cover

If you want faster diagnosis, outpatient cover is essential. Without it, you may need to pay privately for consultations and scans.

Buying after symptoms begin

If symptoms already exist, related claims may be excluded. PMI is usually more useful when bought before problems arise.

Assuming private means everything is covered

You can pay privately for many treatments that your insurer may not cover. Private healthcare and insured private healthcare are not the same thing.

Not checking the hospital list

A policy may look good until you realise your preferred local hospital is not included.

Not checking renewal affordability

Premiums can rise over time. A policy should be affordable not only this year, but in future years too.

Who should be especially careful when choosing PMI?

Some people need to be particularly careful before buying private health insurance.

People with previous medical problems

If you have previous symptoms, investigations, injuries or diagnoses, underwriting matters. Ask exactly how your medical history will affect cover.

Older buyers

Premiums tend to be higher with age. Make sure the policy is affordable long term and check whether any age-related limits apply.

Self-employed people

Speed may be important, but you need the right cover. Look closely at outpatient diagnostics, physiotherapy and treatment pathways.

Families

Check whether each family member has the same level of cover and whether children’s mental health, therapies and outpatient care are included.

People relying on employer cover

Employer PMI can be valuable, but it may end when you leave your job. Check whether you can continue cover personally and what underwriting would apply.

Final checklist before buying

• I understand what PMI is for.
• I know whether I need basic, mid-level or comprehensive cover.
• I have checked outpatient cover.
• I have checked diagnostic scan cover.
• I have checked cancer cover in detail.
• I know whether mental health is included.
• I understand the hospital list.
• I know whether consultant choice is restricted.
• I understand the excess.
• I have checked benefit limits.
• I know how pre-existing conditions are handled.
• I understand the underwriting type.
• I know how claims are authorised.
• I understand possible shortfalls.
• I have compared annual cost, not just monthly cost.
• I have considered renewal increases.
• I have read the exclusions.
• I have asked questions about anything unclear.

Final thoughts: what should you look for?

The best private health insurance policy is not always the cheapest, the most expensive or the best-known brand. It is the policy that covers the situations you are most worried about, at a price you can afford, with exclusions you understand.

For most people, the biggest areas to compare are outpatient diagnostics, cancer cover, hospital access, pre-existing condition rules, excesses, benefit limits and renewal affordability.

If you want simple protection against large future private treatment bills, a more basic policy may be enough. If you want faster diagnosis, more choice and stronger cancer or mental health support, you may need a more comprehensive policy.

The key is to choose deliberately. Read the wording before you buy, understand what will not be covered, and do not wait until you need treatment to discover how the policy works.

FAQ: Choosing private health insurance in the UK

What should I look for in private health insurance?

Look at outpatient cover, diagnostic scans, cancer cover, hospital list, consultant choice, excess, benefit limits, mental health cover, physiotherapy, exclusions and pre-existing condition rules.

Is the cheapest private health insurance worth it?

It can be, but only if you understand the trade-offs. Cheap policies may have limited outpatient cover, restricted hospitals, higher excesses and fewer benefits.

Is outpatient cover important?

Yes, especially if you want faster diagnosis. Many claims begin with consultations, scans and tests, which fall under outpatient cover.

Does private health insurance cover pre-existing conditions?

Usually not automatically. Pre-existing conditions are often excluded, depending on the underwriting method and policy terms.

What is full medical underwriting?

Full medical underwriting means you provide detailed medical history before the policy starts. The insurer then confirms any exclusions.

What is moratorium underwriting?

Moratorium underwriting means you usually answer fewer questions at the start, but recent pre-existing conditions are excluded under policy rules. Cover may only become clear when you claim.

Which is better: moratorium or full medical underwriting?

Full medical underwriting gives more clarity upfront. Moratorium underwriting can be quicker but may create uncertainty at claim stage. The best option depends on your medical history.

Should I choose a higher excess?

A higher excess can reduce your premium, but you must be able to pay it if you claim. It may suit people who mainly want protection against larger bills.

Does private health insurance include cancer cover?

Many policies include cancer cover, but the level varies. Check diagnosis, surgery, chemotherapy, radiotherapy, advanced drugs, follow-up and limits.

Does private health insurance include mental health?

Some policies include mental health cover, some offer it as an add-on, and some limit or exclude it. Always check the policy wording.

Can I choose any private hospital?

Not always. Most policies have a hospital list. If you use a hospital outside the list, you may not be covered or may have to pay extra.

Can I choose my consultant?

It depends on the policy. Some allow broad choice, while others use guided consultant lists or approved networks.

Do I need a GP referral to claim?

Often, yes, but some insurers allow direct access for services such as physiotherapy, mental health support or digital GP pathways.

Can I buy PMI after I become ill?

You can apply, but the illness or symptoms you already have may be excluded as pre-existing. PMI is usually more useful when bought before symptoms begin.

Is private health insurance better than self-paying?

Self-pay may be better for occasional consultations or scans. Insurance may be better if you want protection against larger eligible costs such as surgery or cancer treatment.

Should I use a broker?

A broker may help if you have a medical history, want family cover, are self-employed or need help comparing underwriting and exclusions.

Can private health insurance replace the NHS?

No. PMI works alongside the NHS. The NHS remains essential for emergency care, GP care, long-term conditions, maternity care and complex healthcare needs.