Or as alex397 above has said, the comments that Polish, Romanian etc immigrants seem to get compared to say French or German.
I think there is an element of behaviour involved here. For instance, take a typical Polish behaviour in small towns and villages: drinking outside the local shop. I do it sometimes, the locals are great fun, there are benches and the place has a community centre air about it. But this is and was very antisocial in the UK, and it's very understandable why locals can be uncomfortable with it.
Firstly, I can’t imagine many in the UK will want to emigrate to Daugavpils. But there are plenty who would want to move to other places mostly in Western Europe, either for work or retirement. And not just Western Europe either, parts of Central/Eastern Europe have lots to offer too.
Mind you, until Brexit, there were more and more Brits moving to places like Eastern Poland because of what it could offer them for the same money. I know a bloke who has just bought a huge manor house (or 'palace' in local speak) for peanuts. Lower Silesia in particular is full of ruined palaces that can be bought for the price of a 1 bedroom ex-council flat in the South East. For example:
https://www.morizon.pl/oferta/sprzedaz-dom-zlotoryjski-wojcieszow-1290m2-mzn2040684271 - yours for 155k GBP.
There are caveats, and I would never recommend it to anyone (selling a large house in Eastern Poland or a palace in Western Poland is nearly impossible), but it shows that there's demand in even the most unlikely of places.
Secondly, I can’t believe you think it’s acceptable to use language like you have in bold. Using the word “overrun” is in my opinion dehumanising. Also, the UK is full of Europeans anyway, because we are, er, Europeans.
Overrun is definitely the wrong word here. You can perfectly well talk about the strain on public services and inability of councils to cope, but the idea of 'overrunning' anything is nonsense.
I’m not denying there are Polish people who have this attitude, along with racism and xenophobia. It’s perhaps unsurprising considering Poland isn’t multicultural and their societal values perhaps arn’t as advanced as the UK (in terms of sexism, racism etc) but I’m not sure it’s representative of all Polish people in the UK as a whole. There are Polish children who have grown up here and reject their parents views. Many have also married Brits both white and black.
There is an interesting social dynamic at play. What I'm observing anecdotally is that a lot depends on the parents. If they came from a small town in Poland, the children tend to adopt their values too. Those values often collide with locals, and they are the ones using terrible language online. The children often return to Poland as adults, because they never really adjust to the UK or other host country. These are the ones watching Polish TV, eating Polish food and living in a kind of bubble. You can spot them a mile away in the UK, because their behaviour is so completely out of place. I've had countless experiences where I've seen someone waiting to get on a bus/train, and I said straight away "they're Polish", and they were.
These are the ones that come to mind when people say "Eastern European immigrants".
On the other hand, if the parents are educated, the children are often indistinguishable from locals in the UK. I have some friends in SE England, and it's really difficult to tell the difference between them and locals. They are much more integrated into society, and if it wasn't for the names, you'd think they were the same as any other local. But again, they are professionals, and they were very quick to integrate. I suspect the average Brexiteer wouldn't even know they were from Poland if it wasn't for the names.
Secondly, not that I think xenophobic views towards the Brits from Polish people is acceptable, but is it surprising when we have seen so much anti-Eastern European rubbish in the UK mainstream media over the years? And intolerance shown towards them by members of the public.
I honestly grew up scared of Eastern Europeans (or anyone a bit ‘foreign’) because I thought they were mostly criminals. Living in a Daily Mail household, all I really knew about them was the crimes they committed.
It can’t be a positive experience for some immigrants to live amongst that.
I think it's a really difficult question and I'm not sure that the UK has resolved it. There were issues with crimes, and it's not a big secret that one of Poland's most successful exports was to export the criminality abroad. At the same time, the attitude of the Daily Mail and others was absolutely disgusting and unacceptable.
I think, IMO, one major issue with FoM is that they still don't know how to integrate people properly. The EU wants to make it mandatory for people seeking permanent residence to have at least a B1 level of the local language(s) before they get a permanent residence permit, which I think is a positive step. Speaking as a migrant myself, it's very clear that those without language skills are linguistically and culturally alienated from their new country. You can see it a lot in PL, where people whine that public services aren't available in English.
At the same time, we shouldn't forget that the UK threw the doors open in 2004 while others imposed restrictions. Had we followed the German lead, perhaps it would have been more manageable from a public services point of view.