Thousands of passengers have been left stranded after Eurostar cancelled all services and its chief executive admitted he did not know when trains would be running again.

With five days until Christmas, it is a peak time for travel on Eurostar, with 20,000 people due to cross back and forth underneath the Channel each day.

Engineers from both Eurostar and Eurotunnel spent the weekend investigating the rolling stock and the track to work out why five trains broke down on Friday night.