Some 500 police officers in London will begin wearing cameras on their uniforms from today as a part of a trial aimed at increasing trust and speeding up justice for victims.
Firearms officers will also take part after criticism of the Metropolitan Police following the death of Mark Duggan.
The 29-year-old was shot dead by an armed officer in Tottenham in 2011. His death sparked mass riots which spread across the country.
A jury at his inquest in January this year ruled Mr Duggan was lawfully killed by a police marksman despite being unarmed. The verdict outraged his family and supporters who are fighting the ruling.
Armed officers will first only use the cameras in training, with a view to wearing them regularly if the pilot is successful.
Met commissioner Sir Bernard Hogan-Howe said the move would boost transparency.
He said: “Body-worn video will not only help us fight crime and support victims but help the Met to be more accountable.
