Series that 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, emails and every internet site we visit, to be logged and kept. The logic behind this is that we all benefit from better crime detection and from simpler 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. He goes inside the CCTV nerve centre, sees how all our journeys can be monitored and meets undercover agents, those who are watched and those who have fallen foul of modern surveillance.