Conversation so far:
What did Pete Bain do after the band ended?
After leaving Spacemen 3 in 1988, both Pete Bain and Stewart Roswell ('Rosco') joined the neo-psychedelic band Darkside who released several albums.
Did Darkside have any top hits?
CANNOTANSWER.
What did another band member do post Spacemen 3?
Peter Kember (alias 'Sonic Boom') has had a solo career releasing music under the monikers Spectrum and E.A.R., and has also done production work.

Question: What did the fourth member do afterwards?
Self-contained rewrite: What did the fourth member of Spacemen 3 (Not Pete Bain, Stewart Roswell, or Peter Kember) do after the band ended?