Some actors playing robots mime to a prerecorded voice track. Barman Gideon 20 mouths "What is a satisfaction circuit?" to complete silence. The voiceover then plays, and he must hurriedly re-mouth the words.
"What are you doing that for?" Fred asks Morrey when he breaks into his house, pointing at him. Morrey is meant to be furiously twisting in his chair, but actor Graham Stark is in fact sitting perfectly still.
When pouring soda into Fred's glass, robot Henry largely sprays the mixer onto the floor (owing to the poor visibility of the masks).
After inserting the satisfaction circuit, Graham Stark omits the end of his dialogue; canny Sam Kydd quickly steps in with the line "Sit down, Henry" for him, as this is needed to cue the robot's next line ("Me? Sit down?").
Robots Henry and George neck whisky from the bottle - George tips much of it over his face.