In 2026, UK citizens should use Interrail, as they qualify as European residents regardless of the UK’s status outside the European Union. The distinction between the two is simple: Eurail is exclusively for non-European residents (e.g., travelers from the US, Canada, or Asia), while Interrail is for residents of European countries, including the UK, Turkey, and Switzerland. For a UK citizen, the Interrail Global Pass is a high-value tool because it now includes one outbound and one inbound journey to help you leave and return to the UK via the Eurostar. Aside from the residency requirement, the passes are virtually identical in terms of the 33 countries they cover and the reservation fees required for high-speed trains. If you live in the UK, purchasing a Eurail pass by mistake may lead to your pass being confiscated by a conductor who checks your British passport or proof of residence.