As the long-running documentary returns for a new series, the traffic cops clamp down on young drivers causing danger on north Yorkshire's roads. In the Yorkshire Dales, the traffic cops hunt down ...

This behind-the-scenes series follows the North Wales Roads Policing Unit as its 49 officers police almost 700 miles of road in varied and challenging terrain.

Episode 4 - The documentary series filming inside the North Wales Roads Policing Unit continues with a look at the dangers of high-speed pursuits and the mental strain of the job. More info ...