Eurostar services have been subject to severe delays and cancellation over the past few days. On Friday five trains carrying passengers broke down. This incident has led to Eurostar cancelling all its services due to difficulties caused by the cold weather. It is thought the problem is caused by hot air in the tunnel melting snow which has accumulated under the trains causing the water to drip into the operating systems. All trains were cancelled yesterday and today Eurostar closed its shuttle car service to new arrivals whilst it works to clear the backlog. It is hoped that a limited service will be resumed by Tuesday and Eurostar have said "We will do our best to get everybody home by Christmas." The firm hopes to run two thirds of a normal service on Tuesday with more services planned on Wednesday and Thursday. The company has asked passengers who had planned to travel over the next few days to change their booking if possible and passengers without booking are being advised that they will not be able to buy a ticket.