Revealing mistake: In the scenes inside the space capsule, as Roy goes through the sequence, the wires holding him up in the floating sequences, and the crackers when trying to eat, are visible.
Factual error: When Miriam is pacing, waiting for Tony to come home, she is listening to Tony singing "Come Live with Me" on a reel-to-reel tape recorder, but the recorder has no speakers, either built-in or separate.
Factual error: Shortly after the scene where Robin Hood stops the pie cart there is a long shot and in the distance a car is driving from left to right. (01:00:00)
Continuity mistake: Terry Thomas' name appears in the credits inside the green disc of the traffic lights. However, in this close-up the feet of the poor worker are absent. (00:04:50)
Visible crew/equipment: When Tom's father stands in his bedroom doorway on the day they are going on holiday to tell him that breakfast is ready there is a shadow of the mike on the wall above him.
Revealing mistake: Inspector Emil arrives at the morgue; pay attention to the body, just before he asks "You are...?" to Armstrong, the sheet covering the cadaver rises and fall as the departed takes a few deep breaths. (00:32:00)