My review will be extremely quick and vague! This is because I only remember watching this film way back in around August 1977, after being tied to a hospital beds with traction weights and pulleys, following a road accident! All I can remember is virtually the same as all the other reviewers; ie, the janitor man (Pastry, of course) and his beloved boilers, which he saves in the end! I have been trying to remember the title of the film for 36 years now...so many thanks for that; you've made an old man very happy! I echo your other reviewers' comments, echoing their pleas...do please let us have another airing of this B&W classic on Britsh TV!