Panorama: Lethal Enterprise

Who are your children hanging around with, and what would happen if a fight started? Because of a little-known law called 'joint enterprise' anyone caught up in a serious incident could face the same jail sentence as the person wielding the boot, knife or gun. The police say it is helping to curb gang violence, but Panorama investigates whether this 'catch-all' policy is also leading to miscarriages of justice.