When Philip is meeting with Harry, in a medium shot, he is holding Kristo's business card with one hand; then in the following closeup, he is holding the card with two hands. In the following medium shot, he is again holding the card in one hand.
Harry's hair changes between shots when he is caught by Mary going through her handbag.
During the scene outside the American Bar, a large group of bystanders can be seen watching the action being filmed.
When Figler answers the phone his lips aren't moving.
When Mary is singing "Here's to Champagne" at the nightclub (Gene Tierney as Mary dubbed by Maudie Edwards), Mary, in a long shot, is nonetheless seen "stopping singing" (i.e. her mouth is no longer in a singing mode) while the dubbed voice continues with the long sustained note leading into the initial refrain of the chorus.
When Harry is talking to Anna in trying to raise £200 for the wrestling scam, Anna's mouth movements, what few times they are shown, do not match the lines she speaks up until her final line, "I'll take great pleasure in bidding you goodnight."
As Harry is being chased through the streets of London at night,
he runs down a set of stairs, then turns and runs down a lit street.
In the foreground, the cameraman and director's shadows are clearly outlined
against the street.
The lawyer wants Harry to call on him for a brief talk, but the card he hands to Phil has only his name and title, Legal Adviser to Kristo Enterprises. There is no phone number, no address, and no way for Harry to locate him. London is too large a city for Harry to roam around shouting Fergus Chilks' name and hoping to run into him.