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Before You Go
No vaccinations are required to travel to Scotland.
If you're an EU citizen, a European Health Insurance Card (EHIC) – available from health centres or, in the UK, post offices – covers you for most medical care. An EHIC will not cover you for non-urgent cases or emergency repatriation. Be sure to check that this situation is still in place after Britain leaves the EU in March 2019.
Citizens from non-EU countries should find out if there is a reciprocal arrangement for free medical care between their country and the UK. Australian travellers are eligible for free essential health care, for example.
If you do need health insurance, make sure you get a policy that covers you for the worst possible scenarios, including emergency flights home.
Glasgow's tap water is totally safe to drink.
If you are resident in Britain, public healthcare is free. EU residents will be eligible until March 2019 and probably beyond to the end of 2020, when the transition deal is due to finish. The situation after that was unclear at the time of research.
Some other countries have reciprocal health cover agreements with Britain. Otherwise, you'll usually be expected to pay and claim it back on your insurance. Healthcare costs are reasonable.