if you want to see how it does and sometimes doesn't work, then live in the capital or any other highly populated city around Britain.
That prejudice is supposedly a working class problem is a load of bunkum, that came mostly from the time of the empire, in India and Africa, and the people who ruled weren't white working class, they were back here toiling on the land, working in factories, or fighting for their country in two world wars. Led by some of those same white ruling class,
It is more a matter of culture than colour, and it's more than a two way street. I had many friends from the West Indian community, roughly 50/50 split, so knew them well enough, was involved in their day to day lives, and never saw colour as an issue. However this country has changed massively in less than 50 years, and it's changing at a far greater rate than in the previous 2000, if you don't think that's right, or believe me fair enough. To cite that we are all migrants seems to miss the point, we aren't talking of the Romans, Vikings, we are talking now of cultures from the Middle East, to China, who's communities by the way rarely if ever mixed with Europeans. I can say the same about any number of peoples who have settled in the capital, the Greek and Turkish were insular, and many still are. I wonder at why some continue to bandy around the idea that to talk of immigration as only colour based, for most it's not, it's about numbers, being able to support more, where are the jobs, where do they live, and it is about culture. where some cultural practices are alien to the average Brit, as ours seem be to theirs. Many coming are economic migrants, is that a bad or a good thing, well we shall see. But i don't see a great deal of assimilation in recent years, and that is a sad fact of life.