I lived all over London in areas which had high populations of Indians, the Turkish, Africans and West Indians. We all got along fine and there were no problems, including the Muslims in those communities.
But when I lived in areas which had a high population of Pakistani, Bangladeshi or Somali people my experience was very, very different, I felt high levels of hostility and faced a lot of prejudice. I could detail it all but it's too depressing. Honestly if things of the level I experienced happened to someone Pakistani or Bangladeshi in a white community there would be people in jail in a heartbeat.
I've moved up north and it's similar here but communities are even more polarised. It's not uncommon to meet 3rd generation folk who grew up in Britain but have Pakistani accents because they've grown up with very little contact outside the Pakistani community.
I think part of the problem is that the attitudes which led to Rotherham are held by a sizeable minority. White people who are not Muslims are often seen as worthless, slags, immoral, promiscuous, lazy, dirty, unworthy of respect and deserving of any violence, exploitation or unkindness which flies their way. Although obviously most people don't go as far as murder, the attitude of the families involved in the Laura Wilson murder case to a child with a white partner are often pretty typical.
We can and do as a society challenge unpleasant attitudes within other communities. I really don't see why this is different. We've tried the opposite tack of ignoring any unpleasant aspects of certain communities and denying they exist and it just hasn't worked. It's created communities who feel that the state has endorsed their decision to self segregate and segregation has accelerated, particularly in the north. I really think that something new has to be tried.