Cross-channel rail operator Eurostar cancelled four trains on Wednesday and expects further delay or cancellations of trains due to bad weather.
As snowstorms continue to affect southern England and northern France, the operator decided to cancel two trains linking Paris and London and two between London and Brussels.
The operator asked passengers to swap their Wednesday bookings for another date and has warned of last-minute cancellations in the coming days.
This comes just weeks after a big chill brought Eurostar trains to a three-day standstill in December, leaving passengers stuck on trains overnight for up to 16 hours.
Eurostar, which is operated by French rail company SNCF, its Belgian counterpart SNCB and British government-owned LCR, said the failure was caused by trains moving from cold air outside into the warmer tunnel.