I didn't watch it mate. So can't really say.
There are loads of non Brits here, but not that I've seen being a problem except when some Polish lads battered a mate for no reason.
But everywhere has non Brits these days don't they?
What did the show say?
The overall impression you show gave was that the street was one big melting pot and everyone accepted each others culture and skin colour . It went tits up when people from outside the street - local politicians objected to the word "Immigration " being used and manipulated some of the residents into trying to get the filming stopped by saying that the film makers where only there to turn them into some kind of figures of fun, like they did with " Benefit Street ". Then some local baddies got involved and it all turned horrible .