United Kingdom travel checklist: what to do before you go

The long-lead items are documents and anything tied to a fixed date. Passport and entry rules for the UK depend on your nationality and change from time to time, so check the current requirement on the official government source rather than a blog, then book flights. If your nationality needs a visa or an electronic travel authorisation, apply in good time before departure and follow the processing guidance on the official source.

This is also when accommodation for August and for London in summer gets tight and expensive. If your trip depends on a specific train, such as a sleeper to the Highlands, check availability and book once your dates are fixed.

Book the sights that sell out, such as the Tower of London, the Edinburgh Castle area in August and Warner Bros. Studio Tour London. Admission rules and booking requirements vary by attraction, so check each one you plan to visit.

Sort money and connectivity. Contactless cards and phone wallets are widely accepted, but check what your own card charges abroad and carry a small amount of cash as a backup. Tell your bank you are travelling, and decide between a local SIM, an eSIM or roaming. Check the health side too: routine vaccinations should be up to date, and the UK does not require specific jabs for entry from most countries.

The UK has no routine entry vaccination requirements for most travellers, but your own routine vaccinations should be current. Check what your travel insurance covers for medical treatment and repatriation, and read the official guidance on accessing health care as a visitor before you rely on it.

Pack any prescription medicine in its original packaging with a copy of the prescription. Pharmacies are common and can advise on minor problems; call 111 for non-urgent NHS advice and 999 or 112 for emergencies.

Your passport is the one document that can end the trip before it starts. Check the validity rule for your nationality against the official source, and check whether you need a visa or an electronic travel authorisation. Carry a printed copy of your entry approval and your return ticket; border staff may ask.

Keep digital and paper copies of your passport photo page, insurance policy and bookings. If you are travelling with children, check the current rules for any additional documentation.