DS, aged 17, is desperate to go to the Citadel Festival at Gunnersbury Park, as a band he particularly likes is playing there. If DS goes, it will be with a friend of the same age. We live a long way from London, so trip would involve taking the tube from Acton Town to Victoria around 10.30 at night, then catching a long distance coach back home. I am feeling uneasy about the whole thing, probably prompted by recent media reports about how high the crime rate now is in London. Can any Londoners put my mind at rest and tell me that any 17-year-old exercising basic common sense will be fine doing this? Or if you would be concerned tell me why? As DS points out, in a few months' time he will be 18 and legally able to travel all over the world without my permission if wants to. I can see his point, but would like some perspective!