As a partial answer to the usual question of why families are risking crossing the English Channel, this quote:

Though it is hard to grasp at first sight why any family would sleep in a wood rather than apply for asylum in France, the families and the charities who support them say the official accommodation centres are dirty, frightening and inappropriate for vulnerable families.
Armed police try to get families on to buses, tearing up tents. After a certain number of days families must apply to stay in France, and many do not want to do that.
One father told Fallowfield: “If the French would give us even basic support, I would go to the accommodation centre for my children’s sake. But they treat us like animals.”
Like other families here, he sees trying to reach the UK as his only option. “I have destroyed my life for my children to have a better future. I don’t want my kids to grow up where someone can brainwash them and make them kill for a living. Islamic State came to our country and that’s why I have come to this shit place. It’s the hardest job in the world being a parent.”
From The Guardian

So maybe they are still refugees, fleeing an oppressive regime. Do we really want to remain part of a Union with such a regime?