Ever heard of the Dark Heart Crew ? I hadn't 'til someone googled for them.
Operation Yeoman was established to collect and disseminate intelligence on firearms-related criminality; a priority was to identify specific targets actively involved in gun crime. The ‘Dark Heart Crew’ (DHC), an organised group of 30 members, was identified and a network analysis completed. Its members were involved in Class A drugs supply, firearms, serious violence offences, disputes with neighbouring counties’ firearm gangs, and armed robberies. Members gained kudos by wearing of body armour and guns while frequenting nightclub premises.
Intelligence on DHC members was weak because members had forged longstanding friendships from childhood, family and community connections - efforts to target individuals had provided limited success. This allowed them to establish their territory, accelerate their rise up the supply chain and reduce the risk of prosecution.