Tourists' terror at Calais:as migrants surround their vehicle and smash their way onto a lorry heading to the UK

The dramatic footage showing migrants breaking into the back of a lorry was filmed by shocked passengers on a coach, who were stuck in a traffic jam while travelling in the French port to board a ferry to Dover. After opening the truck's back doors, at least six men can be seen climbing inside and stowing away as the tour guide on the coach tries to reassure passengers by saying: 'Don't panic guys, we have locked all of the doors.'