My Lords, my noble friend points out that the arguments against CCTV can become somewhat circular. There is talk about how many cameras there are. The way in which the huge total is reached is by someone walking down Putney high street, counting the number of cameras and multiplying that by the number of streets in the UK. That is not a very accurate way of arriving at the final figure. There are a lot of cameras because individuals feel safe having cameras on their property and put them there. There is a camera in every cash machine; there is a camera in buses for looking down the bus lane. Those are all co-ordinated with the city-centre sited cameras which the Government helped local communities put up. When footage from them is pulled together in the case of a serious crime, such as the attack on Tiger Tiger, amazingly conclusive evidence is built up that lets us track people down and capture them.