They could have been on a school trip. Fifty teenagers from Vietnam, dressed for the biting cold in puffer jackets, smart trainers and woolly beanies, sat on the pavement by the bus shelter outside Gare Calais listening to music and watching videos on their smartphones.
They were waiting for the 423 bus to take them back to a forest outside Dunkirk, where they have been staying at night with about a thousand others. It had been a disappointing morning for the group.
