The ones that got away- films Steven Berkoff turned down or missed

Blue Velvet from 1986, directed by David Lynch.  Steven Berkoff was first choice for Frank Booth.  When he rejected it the role went to Dennis Hopper.  Berkoff says "there was nothing in that part except destruction".

Eyes Wide Shut by Stanley Kubrick from 1999.  Steven Berkoff wanted to appear in a Kubrick film again, having previously appeared in A Clockwork Orange and Barry Lyndon, but Kubrick really wanted Berkoff and his company to flesh out (almost literally) the orgy scenes so Berkoff felt there was no interesting role for him.

Zeppelin directed by Etienne Périer in 1971 and starring Michael York as a British spy seeking the secrets of the new German zeppelin.  Steven Berkoff appears in pre-release publicity (below, playing York's cousin Emerich) but the scene has been dropped from the film and Berkoff is not named in the credits.

Photo from Films and Filming, May 1971.