- I'm afraid that does not prove the bus conductor had the features of the hearse driver or that he said, Just room for one inside. 
- But he had and he did.
9 seconds sound clip from the Dead of Night (1945) movie soundboard.
You can hear this line at 00:16:13.835 in the Blu-ray version of the movie.
Quote context
[...]
- Bit sick for the passengers on the bus, wasn't it?
- Yes, the hearse driver might've tipped them off, too!
- Perhaps he did, but perhaps they were all Doubting Thomases like Dr. Van Straaten.
- This time you have got your evidence, Doctor.
- Mr. Grainger told the specialist about the hearse before he went to catch the bus.
- Nothing will ever shake me. That hearse driver was sent to me as a warning.
- I agree. Otherwise, why didn't he board the bus?
- Exactly.
- Because he hadn't recovered completely yet.
- Sorry, Doctor, I'll not buy that one.
[...]

 Dead of Night (1945)
 Dead of Night (1945)  Phantom of the Opera (1943)
 Phantom of the Opera (1943)  Scooby-Doo, Where Are You! (1969)
 Scooby-Doo, Where Are You! (1969)  Halloween III: Season of the Witch (1982)
 Halloween III: Season of the Witch (1982)  Knight Rider (1982)
 Knight Rider (1982)