The Foreign and Commonwealth Office (FCO) has issued a warning on passport and driving licence validity in a no-deal Brexit scenario.
UK travellers to a number of European destinations could find that their passports are invalid, even if they have 15 months left until they expire.
Those wishing to drive in European Union and European Economic Area countries may also need an International Driving Permit.
The FCO said: “If the UK leaves the European Union with no deal, the passport validity rules for travel to most countries in Europe will change from March 29, 2019. Some passports with up to 15 months validity remaining may not be valid for travel.
“Before booking travel, you should check that your passport will meet these new rules and find out whether you need to renew it.”
On driving permits, the FCO said: “Check that you have the correct permits covering all countries where you will be driving – you may need more than one IDP.”