Dominic Littlewood reveals the extent of people using fake identities in the UK. We follow the UK Border agency as they intercept people with fake identities entering the country, and go inside the high security National Document Fraud Unit. We show how a man with no qualifications operated as a fake dentist, and look at the criminal gangs who are faking driving tests by getting experienced drivers to take the test in return for a payoff, putting hundreds of inexperienced drivers on our roads.