2/3. Life on the road with Greater Manchester police's 20 high-speed pursuit officers. Tackling one of the country's highest rates of car crime and violence, the Manchester force is uniquely allowed to use unmarked high-performance cars to track criminals. But the tactics are controversial: "hot pursuit" often ends in injuries and deaths, which leaves officers with a difficult decision. Narrated by Jamie Theakston. Director/Producer Matt Holden