How do TV crime dramas get it right?

From The Wire to Line of Duty, how police go about catching bad guys has always made compelling TV, but does it matter if the drama reflects reality. As the final episode of the hit TV show Happy Valley airs, how realistic is the show’s portrayal of small-town policing, and crime, in the UK?
On the Sky News Daily, Niall Paterson speaks to a serving police inspector, Liz Cokayne-Delves, who thinks the show is the most accurate on TV, and barrister and former police officer Jeanette Ashmole, who advised the show, about why it matters TV writers get things right.

Producer: Rosie Gillott
Interviews producer: Alex Edden;
Editor: Philly Beaumont