Acronym for Underground Morals: An organised gang in the north east of England formed by Jim and co-founded by Freddie. It's main aim is to stop innocent people become affected by crime and only targets the "scum" of society (child rapists, rapists, pedophiles, wife beaters, corrupt bastards etc). They follow a specific code of practice and must adhere to the rules at all times.
All the best people are part of the U.M.
Underground Morals; A gang mainly in Newcastle, England bringing hope to drug addicts and people with no future. It gives heroin and crack addicts jobs of either re-routing phone calls, selling drugs in the housing projects, driving VIP's around etc. Then pays them in money/quality drugs/both. Founded by Jim and contains such infamous people as Hunter, Evie, Ken, Mitsu, Dan and others. It has rapidly gained influence, power and popularity and is quickly taking over Newcastle.
Garry was well fucked up because of his heroin addiction until he joined the U.M. Now he's straightened out and he's aspiring to be Jim's personal chauffer.