Police 'failing undercover officers' - HMIC report

Shortcomings in how undercover police officers are deployed and monitored have been criticised by a review.

It says some senior officers have "poor" levels of knowledge of undercover policing and are failing to adapt to threats posed by online crime.

The report by Her Majesty's Inspectorate of Constabulary (HMIC) reveals that there are 1,229 undercover officers working in England and Wales.

Daniel Sandford reports.