One problem Shelley is that after 1 year they are entitled to Tax Credits.This means a Polish worker on minimum wage does not actually pay taxes(they get it back as tax credits) and those on low wages with children are receiving both tax credits and free education and other services.
You`ve forgot to mention the pentions to which they are entitled after the`ve came back here.
To cheer you up I can add that in many cases, when those people are living in the UK, they also often avoid paying taxes as well as reprting their incomes here - which had changed not long ago, cose now our financial institutions are allowed to verify personal bank accounts in the UK.
(wherby - I don`t want to say that our taxes are particulary fair)
The Polish taxpayers had also had to pay for the education of all of those immigrants.
So - you see that this also creates huge costs for our taxpayers - and it is both in our as well as in your interest to stop this situation from continuing any further.