Britain's Armed Police Officers are busier than ever. Last year, they carried out more than 16,000 operations across England & Wales, that's one every 30 minutes.
We hear about the dramatic story that saw an off-duty surveillance officer tackle a gunman on the streets of London, and how one criminal fired at police before leading them on a chase across the city only to be snared in his own home.
S1E3 45 min