Why Are There So Many Foreigners in London?

I think that the trains are too expensive and that the situation is a little bit out of hand. I find it very disappointing to hear students or anyone complaining about London's diversity. It always strikes me as ironic when a foreign visitor turns their nose up at London saying there are too many foreigners here. multiculturalism may not be normal where you're from but London is a proudly diverse place regarding immigration some people in Britain believe it has gone too far.