SOME English men take advantage of Poles for cheap labour
I think you'll find that lax labour laws meant that Poles could offer themselves at a cheaper rate and therefore undercut the indigenous workforce.
& the how Polish women are mistreated
Examples of this?
Regardless of the UK's broken promises, I think that any nation would struggle when they are getting steamrolled by the German/Russian Army from both directions. The fact that Poland held out longer as a country than France did (and didn't surrender) speaks volumes for the sheer grit and determination shown by the Poles.
If the indigenous workforce is too lazy to bother putting in enough effort for a job then I say sod 'em, let the others take it who are willing to graft and do it for less.
That was your grandfather's choice. My dziadek came to this country, assimilated, gave up his passport and embraced everything British. There are also very little cultural differences between the Catholic denominations, speaking as a Roman Catholic with a Roman Catholic wife and having a stepdad who is a vicar in the CofE. Unless you count one believing that the Pope is the head of the church and the other not, alongside more sombre masses, there really isn't that much difference.
To be honest, people who are predispositioned to be small minded morons will be just that, regardless of who bears the brunt of their venom. The BNP are in utter disarray, their voter share has crumbled, they are bankrupt. Similar organisations such as Britain First are being exposed for the cretins that they are, and if you look at Britain throughout the ages, Fascism and the extreme right wing are political ideologies that British folk have simply not embraced. The furthest to the right we can get is Thatcher/Farage.
Oh and for God's sake, please use grammar.