Well, the economy boomed in the 2000s, we even ran a current acc surplus, migrants from the EU did the jobs we didn't want to do and would work the hours we would not, they were also far younger as an average and didn't bring dependents.
But more importantly, it should be remembered most of the European migrants have and are returning to their countries of origin, as eastern european countries grow, very cheap and easy to do so.
Migrants from Asia and Africa wont go home and bought in dependents, inc their parents and children.
As the Telegraph have said, this wave and scale of migration has changed the UK forever, all from the party that still campaigns on lower immigration.....