As a Londoner I object to London being described as a “cesspit”, there are dodgy areas of course, the same as any big city anywhere, but I’m in central areas every week and feel perfectly safe. The main rail stations are mostly renovated and smart, the galleries and museums are brilliant and there are numerous smart areas, which are lovely at this time of year. I avoid weekends as it’s usually too busy but during the week there’s always a huge choice of places for a coffee or lunch, or shopping in lovely surroundings. Yes, look after your bag, like you would in any city. The only place where I have someone (unsuccessfully) to dip into my bag was Milan.