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An aid worker has said migrants in Calais "cannot go back" to their countries so are forced to live in "treacherous conditions" whilst trying to enter England.

Maya Konforti from Charity Auberge des Migrants said migrants are "so desperate" to leave Calais they have tried to "create" traffic jams by throwing rocks on to the highway to slow down lorries so they can climb aboard and pass through the controls.

The UK Border Force and the French authorities prevented more than 39,000 attempts to cross the Channel illegally in 2014/15, which was more than double the number prevented the previous year.

This clip is originally from 5 live Breakfast on June 20 2015.