Career
On their eponymous first album (1972), his bass notes made distinctive contributions to the tracks "Ladytron" and "Chance Meeting". However, not long after the album was released, Simpson, who was suffering from depression following the death of his mother from cancer, was given an open-ended choice to remain with or take a hiatus from the band by Ferry. Simpson chose to leave the band and never returned to the line-up.
He died in 2012.