British people are really weird.
They complain A LOT about Eastern European migrants and even threaten to leave the EU over it.
This is rather silly as these Eastern European migrants are skilled people between the age of 20 and 35.
Job market.
A lot of these East Euroepans are blue collar workers. And they do a lot of their work for a cut price and undercuts the native Brits and puts them out of job. That's why there is some resentment towards east Europeans migrants.
Also, many east Europeans (Lithuania, Albania, Romania, Bulgaria) engage in crime. I watched a documentary a while back highlighting the big theft problem London have, and most of the culprits were of eastern European origin.
Nigel Farage went on a war path against Eastern European immigrants and that's why he got a lot of support from the public.