TrainLine - Book tickets on Eurostar and buy International Rail Tickets. Buy your UK railcard. Buy your EU railcard. Compare cheap prices for train and bus tickets in the UK and EU. The platform partners with numerous train operators across the UK and Europe, enabling customers to book tickets for a wide variety of routes, including domestic journeys, international travel, and high-speed trains. Whether you're planning a short commute or a cross-country adventure, The Trainline offers options to suit every need and budget.