evidence: Since Brexit, the rules on passport validity for British visitors to the European Union have tightened. [...] While the UK was in the European Union, British passports were valid up to and including their expiry date for travel within the EU. But since the end of the Brexit transition phase, British passport holders are treated as "third country nationals" with stipulations about passport issue and expiry dates – together with limits on the length of stay almost everywhere in Europe. [...] - valid for at least three months after the date you intend to leave the EU country you are visiting, - which was issued within the previous 10 years."