大象传媒

Merseyside Police say they have changed their tactics since a week of deadly gun violence last year. But they don't have the resources to follow everyone who could be a danger.聽

As part of a series looking into gang crime and what has changed in the past year, our reporter Katie Barnfield has been on an undercover operation with officers from Project Medusa, as the force try to break up drug routes linked to organised crime groups.