anything is possible, but dont stop with the UK, its happening in the developed world the world over - i assume a list is not required.
Not really, it happens in a significant number of countries but thats not the world, not even the majority.
regardless of multiculturalism. Some may consider multiculturalism a degradation of society but remember its only that (in the worst case scenario) for one maybe two generations,
Rubbish, you got hundreds of thousands of third generation muslims screaming for Sharia law.
after that the immigrants offspring are predominantly UK, Americans, Spaniards or what ever by default.
Tell that to the negros inhabiting black-only ghettos in US.
They go to local schools
Local muslim schools that teach how Islam is the new way and f*ck everyone else for example?
Anyway straigt to the point, UK and US are prime examples of failure of the assimilation you describe, by now its a fairytale living in the heads of people like you, out on the streets its a different story.
Poland is much safer than say UK and i dont want dirty intolerant colored people setting up Mosques and promoting their backwards barbaric ways, most Poles dont feel as strongly as i do but luckily most are not in favor, especially the ones who were in UK, you're a rich country but minorities made it a dump.
You dont invite a bunch of monkeys and then bend over to accomodate them, and thats what UK did.