Pre–Existing Conditions and Long–Term Travel Insurance: What UK Families Need to Know
Written by Tom Widdall | Last updated: 24th April 2026
None of our immediate family have pre–existing conditions to declare. We are aware, every time we go through the insurance screening process, that this makes things considerably simpler for us. My brother back home in the UK has a long–standing heart condition, and watching him navigate specialist travel insurance every time he books a trip – the screening questions, the loading on his premium, the occasional outright exclusion – has given me a clear view of how complex and genuinely stressful this side of travel insurance can be.
This article is for families who aren’t in our straightforward position. Whether it’s one adult with a well–controlled condition, a child with a diagnosed health issue, or something more complex, the principles are the same: declare everything, understand what it costs you, and don’t treat non–disclosure as a sensible way to save money. It isn’t.
This article sits alongside our full long–term travel insurance guide and our three–provider comparison of True Traveller, SafetyWing and World Nomads. If you haven’t read those yet, they’re useful context for everything that follows.
What Actually Counts as a Pre–Existing Condition
The definition is broader than most people expect, and this is where families run into trouble.
A pre–existing condition is generally any medical condition for which you have received a diagnosis, treatment, medication, or medical advice within a defined lookback period – typically the past two years, though some insurers ask further back. It is not limited to serious or chronic conditions. Mild asthma you manage with an occasional inhaler counts. High blood pressure you control with a single daily tablet counts. A bout of anxiety two years ago for which you saw your GP counts. If it’s been on your medical record and falls within the lookback window, it almost certainly needs declaring.
Where families are often caught out is in assuming that because a condition feels minor, stable, or well–managed, it doesn’t need to be mentioned. That assumption is wrong, and it matters enormously if you ever need to claim.
Children’s conditions are also in scope. ADHD, controlled epilepsy, diagnosed allergies, autism spectrum diagnoses – these all need to be declared. The premium impact varies considerably by insurer and by the specific condition, but the declaration requirement is consistent.
💡 PRO TIP
If you’re unsure whether something needs declaring, the right answer is always to declare it. The screening process will tell you whether it affects your cover or premium. Not declaring and hoping for the best is the only outcome that can void your policy entirely.
What Non–Disclosure Actually Costs You
My brother learned this through research rather than experience, and it’s a lesson worth understanding clearly. Non–disclosure is not a grey area under UK insurance law. If you fail to disclose a relevant medical condition and then make a claim connected to that condition, the claim will almost certainly be refused. In more serious cases, it can void the entire policy – which means every claim, not just the one related to the undisclosed condition, could be at risk.
The part that surprises people most is that “connected” is interpreted broadly. If you have an undisclosed heart condition and need emergency treatment abroad for a fall, an insurer may argue the fall was connected to dizziness caused by your condition. This isn’t hypothetical claims–avoidance language. It is the basis on which claims get rejected in practice.
For long–term travellers spending months abroad with children, the financial exposure here is significant. A week in a Thai private hospital can easily run to several thousand pounds. A medical repatriation flight is easily £80,00-£150,000 or more. The premium loading for a declared, well–controlled condition will never approach those numbers.
⚠️ WARNING
Non–disclosure doesn’t just risk your medical claim. Depending on the policy and the insurer, it can invalidate all cover including cancellation, baggage, and liability. Declare everything. The short–term premium saving is not worth it.
How Declaring Affects What You Pay
The honest answer is: it depends on the condition, and the range is wide. As a rough guide for long–term family travel policies:
Well–controlled, common conditions – mild asthma, managed hypertension, a past diagnosis that has resolved – typically add somewhere in the region of 10 to 30% to your base premium. For our own 11–month True Traveller policy at approximately £1,380 for the base cover, a 20% loading would have added around £275. Uncomfortable, but not a different decision.
More complex or high–risk conditions – cardiac issues, diabetes with complications, a history of cancer, significant mental health conditions – can double or triple premiums, or result in the condition being named as an exclusion rather than being covered. A named exclusion means the insurer will cover you for everything except claims relating to that specific condition. Whether that’s acceptable depends on the condition, your risk tolerance, and whether you can manage the potential exposure yourself if something related occurs abroad.
My brother, with his heart condition, typically sees his policy cost at somewhere between £150-£300 for a standard two–week trip to Turkey (his favourite holiday spot) – compared to a base price that would be considerably lower without the cardiac history. For long–term travel, that loading compounds significantly with duration.
For families where one adult has a condition and the other doesn’t, the loading typically applies only to the affected individual’s component of the family premium, not to the whole policy. It’s worth clarifying this with your insurer during screening.
How the Three Main Long–Term Providers Handle It
This is where the choice of provider starts to matter in a way it doesn’t for healthy families.
True Traveller uses an online medical screening process at the point of purchase. You declare conditions, answer a structured questionnaire, and the system either prices the additional risk into your premium or flags certain conditions for exclusion. The process is relatively transparent – you know before you buy whether the condition is covered and at what cost. Their medical limits (up to £10m) mean that even with a loading, the underlying cover is substantial.
SafetyWing takes a different approach. With Nomad Insurance, pre-existing conditions are generally excluded, but emergency treatment for an acute, unexpected flare-up of a pre-existing condition may be covered if it meets their policy criteria. Because of this structure – and because their limits and exclusions differ by plan – families where a pre-existing condition is a key concern should read the policy wording carefully before committing.
World Nomads also uses a screening process and can cover a range of pre–existing conditions depending on stability and treatment history. Several families we’ve met travelling through Southeast Asia have specifically mentioned getting conditions covered through World Nomads that they struggled to cover elsewhere, though they also report paying noticeably more for that cover. For families doing more adventurous travel with a condition, the combination of strong activity cover and the ability to include pre–existing conditions makes World Nomads worth getting a comparative quote from.
The practical recommendation: get a quote from all three with your conditions fully declared before making any decision. The cost difference between providers for the same declared condition can be substantial, and the only way to know is to run each process.
Pre–Existing Conditions for Children Specifically
This is an underserved question in most travel insurance coverage, and it matters for families with children who have diagnoses – particularly neurodevelopmental conditions, allergies, or managed health conditions.
The short answer is that children’s conditions often have a smaller premium impact than equivalent adult conditions, but this varies significantly by insurer. A child with a diagnosis of ADHD or autism, where no medical treatment is typically required abroad, often results in minimal or no loading at all with most long–term providers. A child with managed epilepsy, or a severe diagnosed allergy requiring an EpiPen, will typically require declaration and may see a small loading or a named protocol requirement (carry medication, have a documented care plan).
The things to do before buying, if your child has a diagnosis, are to declare it in full, ask specifically how the condition affects the policy if a claim arises while abroad, and confirm whether any management requirements (carrying specific medication, having documentation) are built into the cover as conditions.
For a more detailed look at this area, see our guide on how medical cover works for children on long–term travel insurance.
If Your Condition Results in an Exclusion
Sometimes the screening process doesn’t result in a loading – it results in the condition being named as an excluded peril. This means the insurer will cover you for everything except claims arising from or connected to that specific condition.
For some families this is an acceptable outcome. If you have a well–understood condition that you manage confidently, and you’re making a reasoned judgment that the likelihood of it causing a medical emergency abroad is low, a named exclusion may feel manageable. That’s a personal risk assessment, not one we can make for you.
For others – particularly where the excluded condition is cardiac, respiratory, or neurological – travelling with a named exclusion on that condition effectively means carrying the full financial risk of a related medical event yourself. A cardiac event requiring hospitalisation and repatriation from Southeast Asia can run to tens of thousands of pounds. That exposure needs to be weighed honestly.
If your condition is resulting in exclusions rather than cover, the options are to shop further (specialist brokers can sometimes find cover that comparison sites won’t surface), to reconsider the destination scope of your travel (excluding USA and Canada, for example, significantly reduces medical cost exposure and therefore premium loading), or to accept the exclusion with a clear–eyed understanding of the financial risk you’re carrying.
Practical Steps Before You Buy
Gather your medical history before you start any screening process, covering at minimum the last two years. Know the names of any diagnoses, medications, and the dates of any treatment or GP appointments. The screening process goes faster and more accurately when you have this ready.
Declare everything in full, even if you’re uncertain whether it falls within the definition. The insurer’s screening process will make that determination. Your job is complete disclosure.
Get comparative quotes from at least two providers with identical declarations. The same condition can price very differently between True Traveller, SafetyWing and World Nomads – and the cheapest isn’t always the most appropriate given each provider’s medical limits and exclusion approach.
Read the policy wording on your specific condition, not just the headline price. Understand whether it’s covered, excluded, or covered with conditions attached. This is the document that governs what happens if you claim – not the marketing page.
If you’re struggling to find cover at all, the MoneyHelper directory lists specialist providers who cover complex or serious conditions. It’s a useful backstop if the mainstream long–term travel providers aren’t able to help.
Who This Is and Isn’t Right For
This guide is for families with declared conditions that affect their insurance cost or coverage, who are planning long–term travel of several months or more. The principles apply whether you’re the adult with the condition, your partner is, or one of your children has a diagnosis that needs declaring.
It is not a substitute for reading your actual policy wording. Every insurer handles conditions individually, and the only authoritative source on what your specific policy covers is the policy document itself.
And if you’re in the same position we are – no conditions to declare, straightforward screening – count it as a genuine advantage and don’t take it for granted. The families I’ve spoken to who are navigating this with a significant condition are doing something considerably harder than we are.
For the full breakdown of what we pay, what we’re covered for, and how we made our insurance decision for an 11–month trip through Southeast Asia, see our average cost of travel insurance for a family of four.