10 Ways to Plan Ahead So Getting Sick on Holiday Doesn’t Ruin Everything

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The difference between a manageable sick day on holiday and a full-blown financial and logistical disaster almost always comes down to what you did — or didn’t do — before you left home. Most of the preparation that makes a real difference takes less than an hour in total. Here’s exactly what to sort before you board.

1. Buy Travel Insurance the Day You Book — Not the Day You Fly

This is the mistake that costs people the most money and the most stress. If you develop a medical condition between booking your holiday and departing, insurers may classify it as a pre-existing condition and refuse to cover it — unless you had a policy in place before the diagnosis. Buying insurance the same day you book closes that gap entirely. Annual multi-trip policies are worth considering if you travel more than twice a year, and many are cheaper than buying two separate single-trip policies.

2. Declare Every Pre-Existing Medical Condition Honestly

Failing to declare a condition — even one that seems minor, well-controlled or completely unrelated to your destination — can invalidate your entire policy when you actually need it. It’s always worth the slightly higher premium that comes with declaring a condition to travel knowing you’re genuinely covered. If your insurer asks about medication you take, your GP visits in the past two years, or any ongoing diagnoses, answer every question accurately. The small print is not your friend if you’ve been less than honest during the application.

3. Check Your GHIC Is Valid Before Every Trip to Europe

The Global Health Insurance Card has an expiry date and many people discover it has lapsed only when they’re actually trying to use it. It’s free to apply for or renew at NHSBSA.NHS.uk, takes around a week to arrive, and entitles you to state-provided emergency healthcare across EU countries at the same rate as local residents. Check it as a standard pre-trip step every time you travel to Europe — it takes thirty seconds to look at the date and potentially saves you thousands.

4. Write Down Your Blood Type, Allergies and Current Medications

Carry a small card in your wallet — or a note saved on your phone — with your blood type, any drug or food allergies (including severity), and a full list of your current medications using the generic drug name rather than just the brand name, along with doses and frequency. Foreign medical staff won’t have access to your NHS records, and being able to hand over this information quickly in an emergency is genuinely valuable. If you have any serious conditions like diabetes, epilepsy or a heart condition, a medical alert bracelet is also worth considering for any significant trip.

5. Pack a Solid Travel Medical Kit

A well-stocked travel kit should include rehydration sachets (the single most useful item for most common holiday illnesses), antihistamines, paracetamol and ibuprofen, antiseptic wipes and plasters, anti-diarrhoea tablets, and a thermometer. If you wear glasses or contact lenses, bring a backup pair or a copy of your prescription. Pack enough of any regular prescription medication to cover the full trip plus a few extra days for delays — and carry it in your hand luggage, not your hold bag. Add a list of the NHS 111 non-emergency number and your GP’s contact details for when you get home.

6. Check Whether You Need Vaccinations at Least 8 Weeks Before You Go

Some travel vaccinations require multiple doses spread over several weeks and simply won’t be effective unless you start the course early enough. The NHS Fit for Travel website (fitfortravel.nhs.uk) has destination-specific vaccination recommendations and is updated regularly. Your GP or a travel health clinic can advise on what’s needed for your specific itinerary, including whether anti-malarial medication is recommended. Don’t leave this until two weeks before departure — for some destinations, you’ll already be too late for full protection.

7. Save Your Insurer’s Emergency Number in Your Phone Before You Leave

Your insurer’s 24/7 emergency helpline number should be saved in your phone contacts before you set foot on the plane — not buried in a policy document in your email. Make sure your travel companion has it saved too. If you’re travelling as a family, consider writing the number on a small card that goes in each person’s wallet or bag. This is a thirty-second job that removes a lot of friction at the worst possible moment.

8. Research Healthcare at Your Destination Before You Go

Spend twenty minutes before any trip understanding the basics of the healthcare system at your destination. Is care primarily public or private? Will you need to pay upfront and reclaim later? Where is the nearest reputable private hospital to where you’re staying? For some destinations — remote areas of Cuba, rural parts of sub-Saharan Africa, or very small islands — the answer to that last question significantly affects what cover you need. TripAdvisor forums and expat communities are surprisingly useful for up-to-date, practical information on local healthcare quality.

9. Check Your Prescription Medication Is Legal at Your Destination

Some medications that are entirely routine in the UK are classified as controlled substances in other countries and can require advance documentation, permits or are prohibited outright. Common examples include certain strong painkillers, some ADHD medications, and some anxiety or sleeping medications. The FCDO travel advice page for your destination will flag this if it’s relevant, and the destination country’s embassy or consulate can provide specific guidance. Getting this wrong at customs is a serious problem — sort it well in advance, not at the airport.

10. Share Your Full Itinerary and Accommodation Details With Someone at Home

This takes five minutes and matters more than most people realise. Share your accommodation names and addresses, your booking reference numbers, your flight details and any planned excursions with at least one person at home who isn’t travelling with you. If you end up hospitalised abroad and unable to communicate, your insurer and the FCDO consular team will need to locate you. A shared note or an email to a trusted contact before you fly is all it takes — and if you update your plans mid-trip, a quick message to keep them current is worth the effort.