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.
| Actor | Role |
|---|---|
 David WarnerValentine Brose | Valentine Brose |
 Cilla BlackBetty Dorrick | Betty Dorrick |
 Alan HowardReverend Mort | Reverend Mort |
 John SteinerAnthony | Anthony |
 Zia MohyeddinDr Aly Narayana | Dr Aly Narayana |
| DDavid WallerMr Price | Mr Price |
 Elizabeth SpriggsMrs Murray | Mrs Murray |
 Jan HoldenMrs Price | Mrs Price |
| TTony ChurchMr Arkwright | Mr Arkwright |
 Joe GladwinPa Brose | Pa Brose |
| JJulie MayMrs Dorrick | Mrs Dorrick |
 Derek RoyleBriggs | Briggs |
 Clifford RoseRegistry Office Clerk | Registry Office Clerk |
| CCyril CrossCommissionaire | Commissionaire |
 Paul DawkinsPowerplant Guard | Powerplant Guard |
 Tommy GodfreyMr. Thacker | Mr. Thacker |
| WWinifred BraemarAuntie May | Auntie May |
| GGladys DawsonGran | Gran |
| JJohn DonegalGramps | Gramps |
 Gilly FlowerAuntie Winnie | Auntie Winnie |
| SSidney GatcumUncle Charlie | Uncle Charlie |
| NNellie HanhamAuntie Lou | Auntie Lou |
| RReg LeverUncle Arthur | Uncle Arthur |
 Royston TicknerTrain Guard | Train Guard |
| DDavid EllisonGardner | Gardner |
| RRoger BoothPincher (uncredited) | Pincher (uncredited) |