In 2015, Europe was in the grip of a migrant crisis, as more than one million people fled regions including the Middle East. Many set their sights on a new life in the UK. But, in order to get there, they had to cross the English Channel.

One of the most common methods was to hide aboard vehicles destined for Britain at the French port city of Calais. This led to the creation of a squalid migrant camp outside Calais, known as the "Jungle". It was populated by seven to ten thousand people at its largest.

Jean-Marc Puissesseau was head of the Port of Calais during the crisis. He speaks to Ben Henderson.

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The Calais 'Jungle' migrant camp

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