Hundreds of Eurostar passengers endured travel chaos this morning as migrants block tracks leading to the tunnel under the English Channel and attempted to board trains.<br /><br /> According to the rail operator, three trains left Paris early for London while two others were forced to return to their original departure stations.<br /><br /> Passengers on one of the UK-bound trains, which stopped nearly two kilometres from the tunnel, were told at one point to be very quiet and listen for the sound of people climbing on the roof.<br /><br /> A helicopter then circled the train as guards walked the tracks looking for people trying to sneak across. <br /><br /> “So, we waited at the entrance of the tunnel, because they told us there were people in the tunnel, and we waited for – I think – two hours-and-a-half, or maybe three hours and in the end, without giving us any information, they said we would go back,” complained one traveller.<br /><br /> Thousands of refugees, mostly from Africa, are camped in and around Calais. Since June, at
