I am not going to sit here and debate with you as to what is right and what is wrong.
This is after all a forum.
a small town called Bridport, in Dorset.The people gave up their homes to us.. I recall the Saturday farmers mkt, where farmer drove their sheep and cattle to sell. This is how I want to remember England
It sounds nice, however Dorset is a very far cry from industrial cities and large ports, which were always mixed. Your website mentions Liverpool, which has had a black population for 200 years. The chocolate box villages of the south look pretty, but aren't everyone's reality nor ever have been. It's hard to expect people from the industrial rust belts of the UK to relate to places like that - either now or then. Nor is somehow excluding people from somewhere on the basis of their colour going to preserve a society in aspic. Places change - the key thing is to manage that change, to make it the best for everybody, and not hold back or resent one group of people standing out from others by their skin colour - that's just storing up trouble.
The north, from the industrial revolution right through to the present day has always been a harder and less attractive place to live, and has always attracted immigrants first from Ireland, then from central and east Europe, and now from further afield. While others emigrate or move away from them for a better life.
Poland is much the same, except the pace of growth and political/economic conditions have been different. John Godson settled in £ódź - a city built on immigration.