U.K.

U.K. are a British progressive rock supergroup originally active from 1977 until 1980. The band was composed of singerelectric violinist Eddie Jobson (formerly of Curved Air, Roxy Music and Frank Zappa's band), guitarist Allan Holdsworth (formerly of Tempest, Soft Machine, The New Tony Williams Lifetime and Gong) and drummer Bill Bruford (formerly a full member of Yes and King Crimson, and also a tour drummer for Genesis), later replaced by drummer Terry Bozzio (formerly of Frank Zappa's band). UK have recently reformed with John Wetton, Eddie Jobson and Terry Bozzio for a world tour in 2012.

source: Wikipedia