It’s a year since Ranvir Singh visited Calais, the French port town at the forefront of what’s been dubbed the worst migration crisis since WW2. Over the last six weeks Tonight has spent time in the Calais camp known as the 'jungle'. We met Maroof, Zubair, and Adil, all three have fled Afghanistan and the lawless rule and persecution of the Taliban and Islamic State. Each night the trio attempt to break into trucks and trains bound for Britain.