Two groups do very well indeed from Eastern European economic migration, that is a) the owners of business and industry, and b) the economic migrants.
The group who does extremely badly out of it however, are the British working classes.

It makes sense for motivated, educated, fit young Poles to spend time cleaning toilets, picking potatoes and serving coffee in the UK, as the wages here are worth four times what they are worth in Poland.

Take a crappy job of say £7 an hour, that's worth £28 pounds an hour (or so) to a Polish person (you'd normally need a degree to get that kind of wage in the UK), add the absence of a young family and mortgage (which has broken the backs of many even on a decent income today) and your young Polish person can readily afford to take a lower rate than an average British bloke with even the smallest mortgage and family to keep could afford to do in this country.

This issue continues to forment a great deal of political discontent among the working-classes, and it also furthers to increase the class divide in this country.

Particularly (forgive me, I think this will annoy some here) when many middle-class liberals would prefer to dismiss such legitimate concerns and political discontent as mere 'racism' (though increased racial tension and prejudice can indeed be a further bi-product). For as one person put it to me: "It's easy for them to do so, because it's not *their* jobs."