The Prime Minister says that has been discussed and Mr Hollande has been clear that they wish the agreement to stay, she also wants that to stay.

There are those who are calling for it to go, in France and the UK, she says but the UK is putting lots of money into border controls and the French are doing the same - it benefits both countries.

"We are both very clear... the agreement should stay," she says.

Hollande says the agreement was necessary because the UK was not in the Schengen zone.

The agreement is useful to both countries, he says, and it allows the countries to work together to stop migrants coming to Calais because they won't be able to cross. He hints that without the agreement more migrants would seek to enter France in order to make the trip to the UK.

"We consider it as our duty ... to apply it and also to improve it" he says.

So that's very clear - both leaders say the agreement about border controls in Calais stays.