Mark Barnes (1970 – 1 January 2016) known professionally as Mark B, was a British hip-hop record producer. He was most active in the 1990s and early 2000s, associating with Task Force and Blade on many of his records.He was a DJ for Jazz Fudge Recordings for much of his career. Mark B first signed with Jazz Fudge in 1995.He produced some tracks for DJ Vadim's U.S.S.R. Repertoire.His first individual album was Underworld Connection, released in 1997.He died in January 2016.