evidence: It's close to five years since Britain left the EU but many UK travellers are still being tripped up by the passport validity rules that came into force since Brexit. [...] Though British citizens can enter the Schengen area with three months of validity on their passports plus the length of their trip, the UK government recommends that they have six months validity. [...] Some countries - including many in Asia and Africa - require UK citizens to have six months of validity on their passports from the date of departure. China, Singapore, and Egypt fall into this category.