Line-up on self-titled cassette release, recorded at Input studios, Oct 24 1981
Russ Russian - guitar, vocals
Nick Blackburn - keyboards
Stuart Kirk-Spriggs - bass
Dave Mayall - slides
Steve Nall - films
Roland Boss - drums, percussion

Line-up on the TMBR album (released on First Floor Records 1983)
Russ Russian - guitar, vocals
Nick Blackburn - keyboards
Stuart Kirk-Spriggs - bass
Trevor Dooley - saxophone, guitar

Other members of They Must Be Russians have included:
Nigel Manning (saxophone), Nick Robinson (guitar), Paul Widger (guitar), Hayden Boyes-Weston (drums), Martin Lacey [aka Martin XRussian] (guitar), Tony Vella (guitar, stylophone), Chris Whitehead (keyboards), Carl O'Connor (bass, bagpipes)

On May 10, 2017, the eponymous tape They Must Be Russians (digitized from Martin Lilleker's collection of band demos) was re-released on Bandcamp with permission of the artists.