Hundreds of travellers and New Year's Eve revellers have been left stranded after a power supply problem halted Eurostar trains between London, Paris, Amsterdam and Brussels.
A disruption in the Channel Tunnel on Tuesday local time prompted the rail company to request train customers postpone their journeys until another time.
Delays and cancellations were blamed on an overhead power supply problem and a failed Le Shuttle train, the operator said.
Le Shuttle trains transport vehicles between England and France.
Eurostar trains out of London serve Paris, Brussels, Amsterdam and Disneyland Paris.
"We strongly advise all our passengers to postpone their journey to a different date," Eurostar said.
"Please don't come to the station unless you already have a ticket to travel.?
Eurostar later announced that services would resume later on Tuesday, but warned that the "overhead power issue remains" and continued to urge passengers to postpone travel.
The Channel Tunnel operator, Getlink said train traffic would progressively resume Tuesday afternoon, local time.
Kate and her family were supposed to be on the 12.30pm train to Paris.
"Disappointing really because we're travelling obviously to celebrate some birthdays," she told the ABC outside the Eurostar check in zone.
"No travel at all and nothing tomorrow either."
She said she and her family are lucky as they live in London, but added she felt for others who may need to find accommodation.
"People are getting frustrated and we get that," she said.
At St Pancras, large crowds were gathered by the check-in area on Tuesday afternoon, local time, where it was clear passengers were starting to become frustrated by the disruption.
One was led away by police, shouting "I just want to know if I'll see my family" after an exchange with a Eurostar worker.
Le Shuttle carried 2.2 million passenger vehicles and 1.2 million trucks through the tunnel in 2024. Eurostar carried 19.5 million customers in the same year, its most successful to date.
ABC/Wires