The story is almost always the same. Someone books travel insurance — cheapest option, comparison site, done in 90 seconds — and doesn't read the policy document. Then something goes wrong. A hospital bill in the US runs to £40,000 before the first consultation. The insurer declines the claim because the traveller has a pre-existing heart condition they didn't declare at checkout. The policy was technically valid. It just didn't cover the thing that happened.
Travel insurance is the only financial product most people buy where price is nearly inversely correlated with usefulness. The cheapest policies are cheap because they've built their exclusions so precisely that the likely claims never qualify. Understanding how the product actually works — before you need it — is the only way to buy it correctly.
What travel insurance actually is
A travel insurance policy is a contract between you and an underwriter (usually an insurance company, sometimes a managing general agent underwriting on their behalf) that promises to pay certain costs up to certain limits if specific things go wrong during a trip. The comparison sites and brokers selling you the policy are typically not the insurer — they're the distribution channel. The policy document, not the summary card, defines what you're actually buying.
Policies are structured around “sections” covering different risks. A standard single-trip policy will include medical, cancellation, baggage, and personal liability as core sections, with optional add-ons for things like winter sports, gadgets, and business equipment. Each section has a limit (the maximum they'll pay), an excess (what you pay first), and exclusions (situations where the section doesn't apply).
The premium you pay is partly a function of which sections are included, how high the limits are, and how long the exclusion list is. A policy with a £10m medical limit, no excess, and a short exclusion list is genuinely more valuable than one with a £2m limit, £250 excess, and seven pages of exclusions — even if the latter is marketed as “comprehensive cover.”
The sections that matter
Emergency medical cover
This is the core reason to buy travel insurance. It pays for emergency medical treatment abroad, including hospital admission, surgery, and repatriation back to the UK if medically necessary. Without it, a serious accident in the US, Middle East, or Southeast Asia can generate bills that run to hundreds of thousands of pounds.
The minimum medical limit worth buying is £1m for Europe and £2m for anywhere outside Europe. The US, Canada, and the Gulf require the highest limits because private healthcare costs are extraordinary. A standard UK comparison-site policy typically offers £5m to £10m — more than adequate. A “budget” policy might offer £500,000, which sounds large but can be exhausted in a US intensive care unit in under a week.
Crucially: the insurer needs to know about the medical emergency in real time, not after you've discharged yourself. Every policy has a 24/7 emergency assistance number. Call it before — not after — you make treatment decisions. Insurers can and do reject claims when the traveller didn't notify them and seek approval before incurring costs.
Cancellation and curtailment
This section pays back non-refundable costs — flights, hotels, tours — if you have to cancel before departure or cut a trip short for a covered reason. Standard covered reasons include: your own serious illness or injury, death of a close relative, FCDO changing advice to advise against travel after you've booked, redundancy, and (on better policies) jury service or adverse weather preventing you reaching a port.
What cancellation cover does not pay for: changing your mind, finding a cheaper trip, low-cost airline policy changes, or events that had already happened or been reported in the news before you booked. If you book to travel to a country that's already under FCDO advice against travel, the cancellation section won't apply — the risk was known when you bought the policy.
Cancellation limits typically match the trip cost you declared at checkout — so declare the full cost of your trip accurately. Underinsuring to get a lower premium is the most common way people end up with a partial payout on an otherwise valid claim.
Baggage and personal belongings
This section pays for lost, stolen, or damaged bags and their contents. Limits on standard policies range from £1,500 to £3,000 total, with per-item sub-limits typically around £300–£500. This matters because one laptop or camera already exceeds the per-item limit on most standard policies.
The section also has important practical requirements: for theft claims, you need a police report filed within 24 hours of discovery. For airline-lost bags, you need a Property Irregularity Report (PIR) from the airline before you leave the airport, plus documentation showing what was lost and its value. Claims submitted without these are routinely declined, not because the insurer is being obstructive, but because the policy explicitly requires them.
Travel delay and missed departure
Delay cover pays a fixed amount (typically £25–£50 per full 12 hours) if your outbound or return flight is delayed beyond a threshold (usually 12 hours). It also often includes “missed departure” cover — costs incurred if you miss your flight due to public transport failure or an accident — up to a limit of around £500–£1,000.
This section is the least valuable per pound of premium. The amounts are small and the requirements are strict. It's also largely redundant for EU and UK routes because EC261 (now UK261 post-Brexit) already entitles you to care, rebooking, and cash compensation for delays above certain thresholds — and the airline pays, not the insurer. See our post on what to do if your flight is cancelled at the gate for the full picture.
What travel insurance never covers
The exclusion lists on travel insurance policies are long, and some exclusions are so common across the industry that they function as near-universal rules. Understanding them prevents the moment of realising you've been paying for a policy that wasn't going to cover the likely scenarios.
Pre-existing medical conditions
This is the most significant exclusion and the most common cause of rejected medical claims. A pre-existing condition is any illness, injury, or medical condition you were aware of before the trip started — including conditions managed by medication, conditions being investigated or diagnosed, and conditions you've had treatment for in the last two to five years (the definition varies by policy).
If you have a pre-existing condition and don't declare it, the entire medical section can be voided — not just the claim related to that condition. Insurers treat non-disclosure as a material misrepresentation that voids the contract.
The solution is to declare everything at the screening stage and pay the loading (the extra premium charged to cover the condition). For common conditions — controlled type 2 diabetes, well-managed hypertension, a history of mild depression — the loading is often modest. For serious heart conditions or active cancer, specialist insurers (not comparison sites) are required, and cover will be significantly more expensive but is available.
FCDO advice
If the UK Foreign, Commonwealth & Development Office advises against travel to your destination — either “all travel” or “all but essential travel” — at the time you travel, most standard policies will not pay out for any claim arising from the situation that triggered that advice. Not medical, not cancellation, not anything.
Check gov.uk/foreign-travel-advicefor your destination before booking and before travelling. It's free, takes 30 seconds, and directly determines whether your insurance is valid.
Alcohol and drugs
Claims arising “under the influence of alcohol or drugs” are excluded on virtually every policy. The practical meaning of this varies: most insurers apply it to situations where intoxication was a material contributing factor to the incident, not to any claim where you'd consumed a drink at any point. But a claim arising from a fall or accident where blood alcohol is recorded will face scrutiny, and if the insurer can demonstrate impairment was a factor, it will be denied.
Adventure and extreme sports
Skiing, snowboarding, scuba diving, bungee jumping, white-water rafting, and similar activities require specific add-ons or specialist policies. Medical costs from ski injuries are the most frequently claimed-for adventure exclusion — fractures and knee injuries at resorts generate thousands of pounds of treatment costs, and the base policy's medical section explicitly excludes them unless winter sports cover has been added.
Unattended belongings
The baggage section excludes theft of items left “unattended in a public place.” This means a bag left on a beach while you swim, a phone left on a café table, or luggage in an unlocked hire car. Policies define “unattended” differently, but the intent is to exclude theft that resulted from your own inattention. Keep belongings with you or locked away — and document that you did, if you have to claim.
Single trip versus annual multi-trip
| Policy type | Best for | Typical cost | Watch out for |
|---|---|---|---|
| Single trip | One or two trips per year, or trips over 31 days | £15–£60 per trip depending on destination and duration | Gets expensive if you travel frequently |
| Annual multi-trip | Three or more trips per year | £60–£150/year for Europe; £120–£250/year worldwide | Per-trip duration limits (often 31 or 45 days); may exclude long-haul on cheaper tiers |
| Backpacker | Extended trips, gap years, multi-country itineraries | £200–£500 for 6–12 months | Activity exclusions; check adventure sports cover specifically |
The annual multi-trip threshold is usually three trips or more. At that point, the annual policy almost always works out cheaper per trip and you get continuous cover — you never forget to buy insurance before a last-minute flight because it's already running.
The main catch with annual policies is the per-trip duration limit. If you travel for longer than 31 days (or 45 on better policies), that trip is either not covered or requires a paid extension. Read this carefully before buying if you take any long trips.
How to find cheap cover that actually pays out
The comparison sites (MoneySuperMarket, Compare the Market, GoCompare) are the right starting point. Sort by price, then filter to a minimum medical limit of £2m for Europe, £5m for worldwide. Apply a maximum excess of £100–£150. These filters remove the policies that are cheap precisely because they don't pay.
Check the FCDO and medical sections specifically. Look for: a 24/7 emergency line, no “must be hospitalised for X days before we contribute” clauses, and a cancellation section that includes the scenarios relevant to you (redundancy, for example, if that's a real risk).
If you have pre-existing conditions, use a specialist comparison site: Staysure, AllClear, and Free Spirit all cater to travellers with health conditions and their medical screening process is more granular than general comparison sites. Expect to pay more, but the policy will actually cover you.
The European Health Insurance Card
The EHIC (now GHIC for UK residents) gives you access to state healthcare in EU countries on the same terms as a local resident. It's free to get and reduces — but does not replace — the need for travel insurance. It doesn't cover repatriation, cancellation, baggage, or private healthcare. In countries with underfunded state healthcare, it may mean very long waits or limited facilities. Travel insurance is still necessary alongside it.
Apply for a GHIC →What to do when something goes wrong
Three things to do immediately, before the situation develops:
- Call the emergency assistance line on your policy document, not a general customer service number. For medical emergencies, do this before agreeing to treatment wherever possible. They can arrange direct billing with hospitals, which avoids you having to pay and reclaim.
- Get documentation. Police report for theft (within 24 hours). Property Irregularity Report from the airline for lost luggage (before leaving the airport). Medical report from the treating doctor. Receipts for every expense you're planning to claim.
- Don't admit fault. The personal liability section of a policy is voided if you admit liability for an incident. Say nothing about fault to anyone at the scene; let the insurers handle it.
Claims submitted within 30 days of the incident with complete documentation are processed significantly faster than those submitted months later with missing evidence. The insurer is not trying to make the process difficult — they're following the policy's evidentiary requirements, which exist specifically to prevent fraud.
The policies worth knowing about
Some premium travel credit cards (American Express Platinum, certain Barclaycard Avios products) include worldwide travel insurance as a cardholder benefit, activated by paying for any part of the trip on the card. If you already hold one of these cards, you may have better-than-average cover already — but check the medical limits and pre-existing condition terms, as card-linked policies are not always competitive on these points.
If you travel several times per year and hold no relevant card, an annual standalone policy from a reputable insurer (Direct Line, Aviva, Allianz) is likely to be the most cost-effective route. The comparison sites make it easy to benchmark them.
The one thing that doesn't change across any of these options: read the policy document, particularly the exclusions and the conditions that must be met to make a valid claim. The 20 minutes it takes to do that before departure is the only way to know whether you're actually covered.