evidence: - One of the most significant changes is that UK passports are no longer accepted for free movement in EU countries. [...] The Impact of Brexit on UK Passports Before Brexit, UK citizens could travel freely to European Union countries, enjoying the benefits of free movement. However, now that the UK is no longer part of the EU, there are specific changes to passport validity requirements. One of the most significant changes is that UK passports are no longer accepted for free movement in EU countries. UK citizens must now adhere to the same rules as non-EU nationals.