evidence: Since the UK left the European Union in 2020, UK passport holders are now seen as ‘third-country nationals’ by EU and Schengen countries. This means the entry rules have changed. And many UK holidaymakers are still being caught out by them. Passports issued after 2018 are valid for exactly 10 years. But if your passport was issued before September 2018, it might be valid for up to 10 years and nine months. This is because, before 2018, the passport office would add up to nine extra months from your old passport to your new one. [...] - Issued less than 10 years before your departure date - Valid for at least three months after your planned return date