Racism is not a one-way street.
I work with two girls who are British of Indian Descent, one Hindu, one Sikh. Both much younger than me, both lovely.
The younger of the two attended the Grammar school locally which is infamous for being populated by children of "mostly Indian / Pakistani descent".
I was putting my child up to sit the 11+ for entry there and she advised me that there's a lot of bullying because the white girls separate themselves and don't mix, very much a them and us feeling. I asked her whether this was mutual? She explained that the Hindu, Sikh and Muslim girls mixed in but that the white girls were different.
Different how? I asked.
"They're easy. They've got no morals." She explained. (This is a High School obviously.)
Now, this girl is not racist, in the time I've worked with her she's had white boyfriends. (To which the older girl said when viewing a picture on her phone of him. "Ew, he's white! Why do wanna go out with a white boy?")
Currently her boyfriend is mixed race (black/white) and her Mother had a fit. The mother was fine with the white boyfriends, but not black, that's not on apparently.
Don't be blind to racism going both ways. This idea of 'culture' is fine but when you believe your 'culture' is superior (and thus making others infererior) that's a problem too.
Like I say, of these two girls, the younger does give me some hope of a more open-minded younger generation. I don't think it's quite the doom and gloom that the rise of extremism in the UK would have us fear, there's hope, things can improve.