Eurostar and Eurotunnel services are delayed by about eight hours by a broken rail in the Channel tunnel.
Services are sharing one track while specialists carry out repairs.
Eurostar has urged its customers to postpone their journies.
A Eurotunnel spokesperson said: "Our passenger service is currently operating with some timetable disruption, this is due to a technical fault in the Tunnel which is in the process of being resolved.
"There is a waiting time of approximately 90 minutes before check in and 6 hours on the terminal. We regret that we are currently unable to sell tickets to non reserved customers.
"We sincerely apologise for the inconvenience this will cause to your journey. "
Services from Calais are operating on schedule.
