Series 4

Officers from the Central Motorway Police Group target cable thieves, a crime that is costing the country more than £1 billion each year and causing chaos to Britain's transport system.

The police deal with the growing problem of stolen cars and the damage the drivers cause.

The cops are forced to take some drastic action when two young men fail to stop for them. In the Midlands, officers in the Central Motorway Police Group have other worries, as they're force to close the M50 when a pedestrian is catapulted into traffic after being hit trying to help a stranded motorist.