As the Government releases thousands of offenders early, to ease prison overcrowding - one of its most controversial policies - Dispatches is undercover inside Britain's biggest tagging company, Serco, which is supposed to monitor offenders in the community. Dispatches finds a system in disarray and serious failures that put the public at risk.
Barnaby Kay, Jane Moore, Jon Snow, Mark Thomas, Max Clifford, Paul McGann, Rosie Rowell, Sophie Okonedo
Documentary
