I avoid London as much as possible, just my annual check up at Guys and that's enough. When I went last year, going up in a fullish lift we stopped to pick up a few more, a Middle Eastern looking guy got in and stood on my feet, he was treated to a little Anglo Saxon and promptly started to lecture me on the correct way to speak English, he was lucky on two counts, Tash was with me and there was a lift full of witnesses. When we came out of the Clinic he was waiting in the foyer and started again, he was not so lucky that time but that's life.