With a surge of violent crime in London and recorded crime rising across the country, Panorama films with four police forces to ask if Britain's police can cope. The film reveals forces stretched to crisis point by eight years of austerity and a national shortage of detectives. An exclusive analysis of police data for Panorama shows how fewer crimes are ending up with any suspect charged. Chief constables speak about the strains on their forces and how changes have had to be made not only in the way they prioritise crime, but how they investigate it too. But do the public accept these changes? Panorama hears from victims of crime and communities who fear Britain's streets are no longer being properly policed.