Gangs Violence Matrix, a database of all alleged street gang members across the city. The database went on to list thousands of names and personal details of mostly young black men that the police claim are at risk of committing gang related crime and violence. Over the last ten years of its history the Gangs Matrix database has been a subject of controversy in the capital, but such tactics remain in place and are still used by London police. What effect does this have on crime, gangs and youth justice?

