Well I'm quite relieved to know that all the folk present were expecting it to happen and were playing their part. But I've seen TV adverts of a mass invasion of Liverpool St Station by dancers, and people trying to catch their train having to make their way through the Flashmob. I wonder what I would do if I saw that button which said 'Press For Drama'. I think I'd go on my way. At my age I don't like surprises!