Most people buy travel insurance the same week they fly, tick the cheapest box on a comparison site, and never read the policy until something has already gone wrong at an airport gate or a foreign A&E. That is precisely the moment the small print starts to matter. The Association of British Insurers reckons the industry pays out the overwhelming majority of travel claims, yet the ones that get refused tend to fail for the same handful of reasons every summer — and almost all of them were avoidable at the point of purchase.
This is not about buying the most expensive cover. A £40 policy with the right declarations beats a £12 policy that quietly excludes the one thing that happens to you. So before you pack for your August fortnight in Crete or that long-haul trip to Thailand, here is where claims actually collapse, and what to do about each one.
The pre-existing medical condition trap — the single biggest reason claims fail
If there is one place travel insurance goes wrong for UK holidaymakers, it is the medical declaration. When you buy a policy you are asked to declare existing conditions — and "existing" is broader than people assume. It covers anything you have seen a GP about, are on medication for, are awaiting tests or results for, or have been referred to a specialist over, usually within a defined look-back period. Skip a declaration and the insurer can refuse the entire medical claim, not just the part related to that condition.
The catch most travellers miss is that this includes conditions that feel resolved. High blood pressure controlled by a single tablet still counts. A chest infection you saw the doctor about in spring still counts if you are awaiting a follow-up. Even a knee you are on a waiting list to have looked at counts. Insurers are not trying to catch you out for fun — they price the risk based on what you tell them, and an undeclared condition breaks that calculation. So they decline.
Declare everything, even if you think it is trivial. Yes, it may push the premium up, and for some conditions it can push it up sharply. If a mainstream policy quotes you something eye-watering, do not just drop the declaration — go to a specialist medical-condition insurer instead. MoneyHelper, the government-backed guidance service, runs a directory of firms that cover serious and complex conditions, and the FCA has pushed the industry to signpost travellers to it rather than leave them uninsured. That signposting exists because too many people were walking away with no cover at all.
The GHIC is not insurance — and never was
Plenty of travellers still treat the Global Health Insurance Card (the GHIC, which replaced the old EHIC for most people) as a substitute for a policy. It is not, and assuming it is has left families with five-figure bills.
The GHIC gives you access to state-provided healthcare in the EU on the same terms as a local resident — which sometimes means free, and sometimes means you pay the same co-payment a Spaniard or a Greek would. What it does not do is cover private treatment, mountain rescue, or the part everyone forgets: a medical repatriation flight home. Being flown back to the UK with a medical escort after a serious accident can run to tens of thousands of pounds, and the GHIC contributes nothing to it. Carry both — the GHIC to reduce upfront treatment costs in Europe, and a proper policy to cover everything the card does not. Outside the EU the card is useless anyway.
Disruption, delays and the cover that only kicks in at the right threshold
Summer 2026 has already delivered the usual cocktail of strikes, air-traffic-control delays and the occasional airline going quiet. Travellers reach for their travel insurance to recover the cost — and then discover how narrowly the disruption sections are written.
Travel delay cover typically only pays out after a set number of hours, often twelve, and frequently as a token fixed amount per period rather than your real out-of-pocket spend. Missed-departure cover has its own conditions about why you missed it. And here is the part that genuinely surprises people:
- Your airline going insolvent is usually not covered by a standard travel policy unless you bought "scheduled airline failure" cover, either as an add-on or built in.
- If you booked a package, your protection comes from ATOL and the Package Travel Regulations — that is the refund route, not your insurer.
- Pay for flights on a credit card and Section 75 of the Consumer Credit Act can make the card provider jointly liable for purchases between £100 and £30,000, which is often a faster route to your money than a claim.
The practical takeaway: before you claim for disruption, work out which of these four actually owns the problem — your insurer, ATOL, your airline, or your card. Firing a claim at the wrong one wastes weeks. And do not bin a single boarding pass, receipt or delay notification, because every one of those routes wants documentary proof and an insurer will reject a claim that arrives as a story rather than a paper trail.
Gadgets, valuables and the single-item limit nobody reads
You take a £900 phone, a £600 camera and a £200 pair of sunglasses on holiday, lose the bag, and assume a policy with a "£2,000 baggage" headline has you covered. Then the single-article limit bites. Most standard policies cap any one item at something like £150 to £300, regardless of the overall baggage figure. Your phone claim gets settled at the single-item limit, not its real value, and you are hundreds of pounds out of pocket.
There are two honest fixes. Either specify high-value items individually on the policy when you buy it — most insurers let you list named items for an extra premium — or accept that your phone and laptop are probably better covered by your home contents insurance or a dedicated gadget policy, both of which often carry higher per-item limits. For one expensive camera you carry everywhere, a standalone gadget policy frequently makes more sense than topping up a travel policy you only use a fortnight a year.
One more thing that quietly voids valuables claims: leaving items "unattended". A bag left on a sun lounger while you swim is unattended in the eyes of most insurers, and so is a phone left on a café table while you queue. Read the definition — it is stricter than common sense suggests.
The alcohol clause and other behaviour exclusions
This one ends more claims than people expect, particularly on stag and hen trips and lads' weekends. Almost every travel policy excludes claims arising from being under the influence of alcohol or drugs. The wording is usually vague — "excessive" alcohol — which gives insurers room to decline an injury claim if hospital notes mention you had been drinking.
It is not that one glass of wine with dinner voids your cover. The risk is the injury you pick up after a heavy night that the medical record then documents. Insurers do read the notes. The same goes for adventure activities: quad biking, scuba diving below certain depths, jet skis, even some hikes at altitude are commonly excluded from standard policies and need a specific add-on. If your holiday involves anything more energetic than a sunbed, check the activities schedule before you go, not after the ambulance arrives.
How to buy so the claim actually pays
Comparison sites are fine for sorting the field, but the cheapest result is ranked on price, not on how the medical declaration is handled or how generous the single-item limits are. Sort by price to see the range, then read the actual policy wording — specifically the medical declaration questions, the disruption thresholds, the single-item limit and the excess. The excess matters more than the headline premium for small claims: a £39 policy with a £50 excess is worse than a £45 policy with no excess if your most likely claim is a £120 lost-baggage payout.
Buy the policy the day you book the trip, not the week you fly. Cancellation cover only protects you for events that happen after you are insured — fall ill the week before departure with no policy in place and you have nothing to claim against. Annual multi-trip cover usually pays for itself by the third trip and means you are never caught out booking a last-minute weekend uninsured.
And declare. Declare the blood pressure tablet, the asthma inhaler, the appointment you are still waiting on. A higher premium is an irritation. A refused medical claim in a Spanish hospital, with the repatriation flight on you, is a remortgage.