British citizens use the Interrail Pass for their European rail adventures. While the names are often used interchangeably, the rule is simple: Interrail is for European residents (including those in the UK), while Eurail is for non-European residents (like Americans or Australians). Despite the UK's departure from the European Union (Brexit), the UK remains a full member of the Interrail community. In 2026, British travelers can still use an Interrail Global Pass to travel across 33 countries, and the pass even includes one "outbound" and one "inbound" journey to help them get from their home station in the UK to the Eurostar terminal at London St Pancras. This remains one of the most cost-effective ways for UK residents to explore the continent, provided they account for the separate seat reservation fees required on high-speed trains like the TGV or Frecciarossa.