Around 100 striking French ferry workers have blocked Eurotunnel train traffic between France and the UK for the second time in a week.
Freight companies and Eurostar said they are suspending train services today after the workers blocked the tracks in the French port city of Calais.
The port workers are striking for a second week over expected job cuts.
The Eurostar train service carries about 10 million people a year across the English Channel.
Striking workers have swarmed the tracks, according to reports.
Eurostar services have been cancelled for the rest of the day. A fire has been started near the entrance to the Channel Tunnel by striking French ferry workers who have already halted sailings between Dover and Calais.