© BBC & Dancing Ledge Productions Hot on the heels of a second series of 'Blue Lights ' comes the return of another hugely admired BBC1 cop series. Former cop Tony Schumacher's 'The Responder' earned critical acclaim and an International Emmy Award for its star Martin Freeman for its no holds barred portrayal of policing in Liverpool. The Merseyside drama showed the realities of officers policing an English city riddled with drug dealing and drug related crime. Like some of the best crime dramas of recent times, it showed the toll it exacted on officers who feel like they are fighting a losing battle. © BBC & Dancing Ledge Productions It also showed the toll on the addicts, dealers and their neighbours. What made it really compelling, though, was the way it depicted people struggling to keep their necks above water. Martin Freeman's lead character Chris Carson was a morally compromised police officer - a Scouse version of Harvey Keitel's 'Bad Li