I am EU migrant too since 4 years. I know of people that have been treated in a bad way saying that they want to deal only with British veterinarian and not with foreigners. I have seen video on youtube where argues were starting from nothing just because not British. In the same time I can tell you that so fare the people I have met, have treated me as a good friend.
So there is a bit of everything... but the extremists... especially people on benefit are becoming more and more extremist.