
Eurostar, the high-speed train operator connecting the UK with mainland Europe, has announced the launch of a new-generation fleet featuring double-deck trains that will pass through the Channel Tunnel from the UK to France and back.
Plans and Key Features

The new train, called the Avelia Horizon series or marketed as “Celestia,” was ordered by Eurostar from Alstom for approximately €1.4 billion for an initial 30 units, with an option for up to 50 units. Launch is expected to begin in 2031, and the trains are designed for international routes, including London to Paris, as well as networks passing through the Channel Tunnel from the UK to France.
Significance for UK–Europe Travel

Routes like London to Paris, which previously used single-deck trains, are now entering a new era with Eurostar. With the introduction of double-deck trains capable of passing through the Channel Tunnel, Eurostar strengthens its position as a major player in international high-speed rail from the UK to France and beyond.
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Challenges and Support
Although this announcement is not an immediate launch, the new trains will begin operations in 2031. This step reflects Eurostar’s ambition to manage rising demand and maintain competitiveness against other modes of transportation, such as air travel. Additionally, infrastructure like maintenance depots is being prepared to support the fleet.