Eurostar said its passenger numbers rose by more than a fifth last year.
The rail operator said it will transport 18.6 million passengers in 2023.
That's a 22 percent increase from the previous 12 months and is a return to levels last seen in 2019, before the coronavirus pandemic.
Eurostar operates direct and indirect routes between the United Kingdom, France, Belgium, the Netherlands and Germany.
Year-on-year increases on Eurostar's three main routes serving London St Pancras were Amsterdam (up 38 per cent), Brussels (up 33 per cent) and Paris (up 25 per cent).
Eurostar CEO Gwendoline Cazenave said: “Eurostar is growing and in 2023 we welcome many more customers on board across our five countries.
“Our goal is to encourage more people to take the train so that it is a win for customers and a win for the planet.
“We have a bold vision of reaching 30 million passengers by 2030, and growth in 2023 of 22 percent compared to 2022 demonstrates that we are firmly on that path.
“We carry almost eight million passengers between London and France, 1.1 million between the Netherlands and the United Kingdom and 2.2 million to Belgium.”
The operator hopes to transport nearly two million passengers to Paris during this summer's Olympic and Paralympic Games.
Eurostar could soon face competition after having a monopoly on train travel between London and Paris for three decades, according to an in-house rail expert.
Mark Smith believes the introduction of a rival “keeps everyone on their toes” and would lead to rate cuts, he said. The independent: “I'll believe it when I see it, but this time it's very possible that it will happen.”
Smith, founder of the railway website Seat61.com, was responding to news that a company called Evolyn had agreed to buy a dozen trains for use between the British and French capitals from 2025.
