1) You can get the money easily enough. If you look on Gumtree, you can get a room for 600zl a month in Warsaw. Add to that maybe 100zl for a flight, and you're looking at needing around 300 pounds to get your feet on the ground. If you can't raise 300 pounds, something is seriously wrong with you.
Now, that's the difference, and is what would put off British workers from moving to Poland. My ex's sister pays around that for a flat large enough for a family, not a room. 100 PLN would barely cover the landing fees these days, try 200 PLN. That's closer to £500. Not easy if you're unemployed and particularly if you're in debt. The difference is, Poles don't have to pay "expat" rents in the UK, but over here, Poles can get the same housing for the same price as Britons do. You aren't comparing like with like.
2) Language barrier? It didn't stop Poles working in the UK.
It depends on the kind of job they came to do. I couldn't do my job in Poland without fluent Polish (mine is, I have spoken it all my life) but a Pole couldn't do my job in the UK without good English, absolutely no chance.
3) There are opportunities in Poland for skilled foreigners, particularly in more working-class environments.
Even my family tell me I'd have no chance of getting a job in Poland, because "real Poles" get employed first, and fluent Polish/Polish name/Polish ancestry dating back centuries counts for nothing - because you're an "Anglik" to them if you weren't born on Polish soil! You would NEVER hear Pakis saying this about their own!
5) That's greed, nothing more - and you can continue paying UK National Insurance when you're resident outside of the UK anyway. If you want a job, the jobs are there!
It's taken me 15 years to get to the pay level I'm on today, whereas 30% of my salary could be wiped out just by spending 12 months abroad. How is that greed? It's things like this which make workers decide against moving abroad. It's called economic reality, not greed.
There is NOT ONE country in the world which could even pay me even double for what I do, never mind something which needs no qualifications. Whereas well-qualified, professional Poles can come to the UK to do jobs which need no or few qualifications, and get paid 3-4x more than they did back home. More money, less responsibility.
Again, I'm just explaining that you're not comparing like with like.
I'm not getting at you, I'm just pointing out a few differences which demonstrate that it is almost always benefiical for a Pole to move to the UK and work in any job (with the intention of eventually returning; possibly even if they decide to stay - because of better benefits, etc), but there is no advantage for a British worker to move to Poland, to take even a job which would be considered well-paid by Polish standards.
But that's only the case in the last what, 12 months? Before that, many Brits wouldn't be seen dead cleaning toilets, partially because their husband was too busy creaming in huge bonuses in the City. Now that he's unemployed, they have no choice - and it's the very same people whining about Poles stealing jobs!
The kind of people who work in the City are hardly the kind of people who marry potential candidates for cleaning jobs! Besides, if you can show me a single case of an ex-City trader who is now cleaning toilets, I'm all ears. I expect that you would find that someone like that would be considered vastly over-qualified to clean toilets, and rightly so.