Motorway Cops: Catching Britain's Speeders

With 3 million dashcams now in our vehicles, we're revealing some of Britain's worst driving offenders. PC Mike responds to a 10 car vehicle and HGV smash on the M6.

Officer Matt Turner, who has been on the force for over 20 years, brings a car to a stop in the middle of the motorway and comes across an unexpected haul as well as a surprising passenger who stops him in his tracks.

A suspected drug dealer has an unusual explanation for the suspicious contents of his car, but an even bigger surprise faces the police when they also search his home. Elsewhere, Chris Swash is on the trail of a dangerous driver.

PC Andy Doran is on the hunt for a suspected car thief who has abandoned his vehicle on a housing estate. After an exhaustive search, he's left with no option but to send in a police dog to sniff out the suspect.

PCs Ian Cosgrove and Rich Woodward attend the scene of a shocking multi-vehicle crash on the M56 that's left a woman trapped in a car.

Inspector Anton Sullivan is bracing against the weather as he attends a major incident in Runcorn. Meanwhile, in Northwich, PC Mike Clark pulls over a suspected drug driver, who pleads his case as a medical cannabis user.