Undercover

There have been multiple groups that have used this name.
1) Undercover was a Hard Rock/AOR group by a ex-Vandenberg singer Bert Heerink from Netherlands who make 2 albums in the 90s. One was Undercover (1990), a cover album, and second record was All Line Up (1994).
Personnel: Bert Heerink Vocals Dick Kemper Bass, Vocals Ronald Bekking Guitars, Vocals Ivo Elfers Drums Cyril Whistler Guitar, Vocals
2) Undercover was a UK based pop-house group who hit the UK #2 spot in 1992 with their Stock, Aitken, Waterman produced cover of Baker Street.