The only reason Brit don't like the Poles is the brutal fact they (Polish) are better educated and better skilled than the 'true Brits'
You also forgot another thing:
British people, in general, have an horrenduous appearance. Woman look like blobs while man are all feminized by political correctness.
There is even a joke in South America: "Any European men in Rio would make a huge success with Woman. Except if he is British, then he would take by girls as a competitor, not a target"
Since Polish woman are much more beautiful and polish man (and slavic in general) behave like Man, Alpha Male, the brits get resentful.