Work Is a 4-Letter Word (1968)

Dreamlike satire about a young man who resists getting a job at the lone employing conglomerate in his dreary industrial town, but changes his mind when he discovers the plant's boiler room has the perfect climate to assist him with his pet horticultural (fungal) project.

Directed by: Peter Hall

Starring: David Warner, Cilla Black, Alan Howard, John Steiner, Zia Mohyeddin, David Waller

Links: IMDb, Movie posters, Movie stills