A new three part series looks at why the UK has become one of the most watched places in the world - with millions of CCTV cameras, a growing network of number plate recognition cameras, one of the largest DNA databases in the world and government plans for the basic details of all our phone calls e-mails, and every internet site we visit to be logged and kept. We all benefit from better crime detection and from easier and cheaper services. The government argues that: "If you've got nothing to hide, then you've got nothing to fear." Richard Bilton explores the hidden world of surveillance.