I went to uni in Sheffield and it's an amazing party city. I applied for uni in loughborough back in the day and I really didn't like the uni or the city. Thank god I went to Sheffield!
I'm black for all intents and purposes.
Sheffield is very mixed indeed - probably more so than Queen Marys.
Sometimes it does matter to have a mixture of ethnicities around - just for simple reasons like, who the hell is going to do your hair. And that's just one.
I grew up in Hertfordshire and that issue alone was a pain in the arse. It's also nice not to feel like an "otherness". I know most people have the best of intentions but there is a marked difference in general attitudes to people of ethnic backgrounds where people have had less opportunity to mix with different people. People aren't all colourblind. It's an ideal, but it's not a reality.