British holidaymakers will need to have six months left on their existing passports if Britain leaves the EU without a Brexit deal.
The Foreign Office updated its travel advice on Friday saying the rules for travel to most countries in Europe will change if the UK leaves with no deal.
It is estimated that around two million UK travellers, whose passports are in their last year of validity, would be affected.
The FCO said after March 29, 2019, British passport holders should make sure they have six months left on their passport from the date of arrival overseas. This applies to adult and child passports.
It added: “If you renewed a 10-year adult passport before it expired, extra months may have been added to your passport’s expiry date. These extra months will not count.”
The new rules will apply to passports issued by the UK, Gibraltar, Guernsey, the Isle of Man and Jersey.
In a document outlining the consequences of a no-deal scenario, the Government said British passport holders would also need to buy a new £5.50 international driving permit if they want to drive in the EU.