The problem is that now the UK is becoming a dual society. There are parts of some English cities and towns where Muslims - or people of South Asian or Arab appearance, really - aren't welcome. Equally there are parts of those same towns and cities where white people aren't welcome.
There has to be some kind of push towards (partial) assimilation and integration (anywhere). Otherwise you just end up with suspicious, mutually hostile communities living next to each other with a great deal of tension.
I'm just wondering, where are you from in the UK?
I'm a white, blue eyed blonde haired male from Leicester. Growing up in Leicester my school was 60% (South) Asian, with my class-mates coming from a wide mix of Hindu, Islamic and Sikh backgrounds.
There was barely any racism in our school, whilst there were sometimes cultural differences, for most people ethnicity was not a big issue. Pretty much everybody I know (White, Black, Muslim or Hindu) doesn't care about skin colour or religion, the individuals personality is far more important. The only group that people do have an issue with are the Islamic Extremists (for good reason) but everybody has a problem with them. The vast majority of Muslims despise them more than we do, for they have suffered the most from their actions. And most people in Leicester (at least, I expect most places) are well aware that most Muslims are not terrorists, and that they just want to live a happy, normal and free life. If they want to socialise and live amongst people who have similar beliefs and come from a similar culture, then why can't they?
I'm not proclaiming Leicester to be a utopian cultural melting pot, and of course there are idiots and issues, but I disagree with the idea that there is limited integration in Britain. Even if some areas are predominantly Asian and others white, the majority of people shop in the same stores, use the same buses, go to the same schools and hospitals and work in the same offices. Most people are way past caring about ethnicity, religion or cultural background.
Perhaps in places like London, there are greater issues with the gangs and no go-areas so to speak, but I don't believe it boils down to ethnicity or religion on the whole. They'll still nick your mobile phone and Ipod come what may regardless of whether you're European, Brazilian or Pakistani.
The UK is far from perfect (as some of the recent youtube clips have highlighted) but as far as Multi-Culturalism goes, at this stage I'd say the UK is a world leader. We're certainly doing better than the French (although that's not exactly an achievement). The riots in the summer had nothing to do with race. We've come a long way since the early 80's.
As for Koreans, they're just a little bit uninformed and sheltered in general. A less polite term is 'ignorant'. It's quite understandable given they've not had the exposure that so many of us self-righteous foreigners have had to other cultures. I've met plenty of (young-ish) Koreans who have told me about the discrimination of South-East Asians in Korea, how terrible it is and how they hope it changes. Even some of my middle school students in rural northern Gangwon-Do have tried to tell me about it.
Once the Ajummas and Ajoshis start dying off, (much in the same way as our grandparents did) perceptions, attitudes and society will change vastly and Koreans will not appear to be quite so 'naive' / 'ignorant' to so many of us foreign teachers. I think there's lots of hope for the future.
I've also still yet to see public toilets and restaurants segregated by skin colour...!!!
Considering how we sometimes portray Koreans, they've never been quite as backward and ignorant as us (meaning Caucasians) have they?!?!?!