If the project goes ahead, the new direct trains from Geneva and Zurich are expected to arrive at St Pancras station in London.
The project has also just been the subject of an agreement between the British station and the Getlink group which manages the Channel Tunnel.
There is enthusiasm among both British and Swiss passengers. “We feel so disconnected after Brexit. This kind of direct connection would be incredible,” says one Briton.
Choosing best route
Swiss Railways is also pleased with the project. However, the company notes that Swiss railway stations will have to be adapted to accommodate these new passengers.
+ Trains often more expensive than flights for Europe trips
“We now have the challenge of having to reserve a platform to be able to make a terminal. Perhaps we will temporarily put a departure in the peripheral stations of Geneva to be able to ensure it starts. And then we will return to the main station once the development work is finished,” suggests Vincent Ducrot, Swiss railways director.
The biggest challenge will be which route to take, says public transport specialist Momentum Transport. The line could, for example, go through Brussels and Germany, or a new TGV section could be built between Lille and Reims in France.