Jammer (born Jahmek Power) is an English rapper and producer active in the grime scene. Jammer is a member of the grime crew Boy Better Know. Jammer also runs Lord of the Mics, a battle-rap competition well known in grime. Jammer was a member of the East London group Nasty Crew from 2000, and released a single under his own name, "Take U Out", in 2003 before departing from the group.[1] He signed with Big Dada Recordings and released his first full-length, Jahmanji, in May 2010.