Herbie Flowers
What a Wikipedia intro
Flowers has contributed to recordings by Elton John (Tumbleweed Connection, Madman Across the Water), Camel (tuba on Nude), David Bowie (Space Oddity, Diamond Dogs), Lou Reed (Transformer, including the two prominent basslines of "Walk on the Wild Side"), Melanie (Candles in the Rain), Roy Harper (Bullinamingvase), David Essex (Rock On), Al Kooper (New York City (You're a Woman)), Bryan Ferry (The Bride Stripped Bare), Harry Nilsson (Nilsson Schmilsson, Son of Schmilsson), Cat Stevens (New Masters, Foreigner), Paul McCartney (Give My Regards to Broad Street), George Harrison (Somewhere in England, Gone Troppo, Brainwashed) and Ringo Starr (Stop and Smell the Roses). He also played bass on Jeff Wayne's Musical Version of The War of the Worlds.
