A new behind-the-scenes series looking at the North Wales Roads Policing Unit where 49 officers police almost 700 miles of road.

From the picturesque rural west to the built up urban east, no other police force in the UK faces such varied and challenging terrain. 

Enduring high-speed chases, anti-social behaviour and even violent attacks, these are the officers keeping North Wales safe - a portrait of real people going above and "beyond the line"