Yes, you can upgrade your Eurostar ticket to a higher class of service, though the specific names of the classes have recently been updated. Eurostar now primarily uses Eurostar Plus (formerly Standard Premier) and Eurostar Premier (formerly Business Premier). Passengers can upgrade by visiting the "Manage Booking" section on the Eurostar website or app and paying the difference in fare, subject to availability. Additionally, Eurostar offers a "Bid for an Upgrade" program on routes to and from London, where eligible travelers can submit a monetary bid for a chance to be moved to a higher class; you are notified at least 24 hours before departure if your bid was successful. Eurostar Premier offers the most benefits, including a three-course meal designed by a Michelin-starred chef, lounge access, and faster "10-minute" check-in, while Eurostar Plus provides more spacious seating and a lighter meal served at your seat.