Passengers planning to travel through the Channel Tunnel on Tuesday face big delays. A power supply problem has stopped Eurostar passenger trains and Le Shuttle car and freight services between Folkestone and Calais. Long lines of drivers are building up at Folkestone. A Eurostar train departed from St Pancras International at 7:01 am but is now running four hours late and has not yet arrived in Paris. Eurostar posted a warning on its website saying, "Due to a problem with the overhead power supply in the Channel tunnel and a subsequent failed Le Shuttle train, we strongly advise all our passengers to postpone their journey to a different date. Please don’t come to the station unless you already have a ticket to travel." The Le Shuttle website said, "We are experiencing severe disruptions to our service due to an overhead power supply issue; services are delayed. We’re working hard to resolve this. Thank you for understanding." More updates will follow as the situation develops.