Fair shout Matt, keep it clean and above board everyone.
Whilst Im sure these comments are being made in gest, let's be fair whilst these cleaning centres might not clean your cars to the standards you'd want, unlike a significant percentage of our indolent British nationals who sign on specially so that they don't miss the factual entertainment programme Jeremy Kyle, and wouldn't pick up a sponge to wash themselves let alone a car, these guys work ****** hard in all conditions before we even get on to the issue of race.
I know quite a few Polish people and they seem decent, have an open minded outlook and are certainly less blinkered than many who like to pigeon hole and categorise! If the shoe was on the other foot.....
Edit: P.S. my Dad and his family are all from Germany so no mention of the war or 1966 either ;-)