Brits will need to hold a passport with a minimum of six months left on it to be able to travel after Brexit.

The new rule will affect holidaymakers travelling to most countries in Europe including Spain, Greece, France, Germany and Italy from January 1.

Your passport will also need to be less than 10 years old - even if it has 6 months or more left before it expires.

Holidaymakers may need to renew their passport earlier than expected

These rules do not apply to travel to Ireland. You can continue to use your passport as long as it’s valid for the length of your stay.

It is estimated that around 5 million UK passports are set to expire in less than a year - meaning holidaymakers should act now if they want to go abroad in the new year.

Those who don't renew in time will "not be able to travel to most EU countries" as well as Iceland, Liechtenstein, Norway and Switzerland.

The major warning has been issued to the public as the government today launches a campaign to prepare Brits for life outside of the EU.

It features information about passports, hikes in travel insurance, roaming mobile phone charges, and travelling with pets.

Under the new rules, free mobile phone coverage may end, with the government warning holidaymakers to check their contract

Whether companies may hike up prices as a result remains to be seen.

New rules also mean holidaymakers may also need an international driving permit, depending on which country they are visiting.

And people driving in their own car may also need an insurance "green card" to prove that they have adequate cover.

Pet owners have also been warned to start preparations by giving their vets at least four months notice before they set off - as the pet passport scheme has been axed.

This means dogs, cats and ferrets may face blood samples being shipped for testing to an EU-approved laboratory at least thirty days after a rabies vaccination.

The initiative, "The UK's new start: let's get going" is set to prepare Brits for visiting the EU from Jan 1 2021, when the UK quits the single market and customs union.

Cabinet Office minister Michael Gove said: "While we have already made great progress in getting ready for this moment, there are actions that businesses and citizens must take now to ensure we are ready to hit the ground running as a fully independent United Kingdom."