When Angela is playing darts, in the closeup, it is seen that two of her shots landed at the edge of the board. When she goes to retrieve them, however, she takes all three darts from the center.
When Clive first visits his Aunt's house and the camera pans to the wall where the animal heads will appear, a lighter patch of wallpaper can be seen where one of the heads is later superimposed.
Several times Candy says that during the Boer War he had had to hide out in a house in South Africa for seven months, but at the restaurant in Berlin he tells Edith he had hidden for seven weeks.
When, in 1919, Candy receives the letter telling him of the whereabouts of prisoner-of-war Schuldorff, there's a shot of the letter saying that the camp is called 'Hardleigh'. However, in voice-over, Candy says 'Hardwick'.
Candy's scar is clearly visible on his upper lip when he is in his room at the convalescent hospital, but it is obscured by his newly grown mustache moments later when he goes to congratulate Kretschmar-Schuldorff.
Clive Candy goes to confront Kaunitz in Berlin, which is in Prussia, but Kaunitz's Stammtisch (regular table for meeting of friends) are drinking from Hofbräuhaus krugs (steins), noted by the 'HB' insignia. The Hofbräuhaus is in Munich, which is the capital of Bavaria, 360 miles away.
Candy receives a message saying that WW1 will end at 10am ... and it does. In reality, it ended at 11am ('the eleventh hour of the eleventh day of the eleventh month').
When the club porter reads the postcard from Candy, on the hand shown holding the postcard there is a fly on its thumb, briefly.
Flies do land on people occasionally, including hands, fingers, and thumbs.
Flies do land on people occasionally, including hands, fingers, and thumbs.
The makeup applied around the edges of the hair pieces that the older characters Candy & Kretschmar-Schuldorff wear are easily spotted, especially during close-ups & when Candy is apprehended in the Turkish bath.
When the traffic light changes from yellow to red as Angela is driving, it is obvious a gel is slid in front of the studio light and it is not separate lights changing from one to the other as with a real traffic signal.
The car in which Candy and Barbara drive to their home in London is a 1923 Wolseley, but the date is set as July 1919 as seen by the letter he receives from the Prisoner of War Committee.
A camera shadow is visible on Clive's shoulder when he meets Theo at the Alien's Hearing.
A camera shadow is visible on Clive's back as he approaches Theo at the prisoner camp.
When Candy and Barbary pull up in front of their London home and get out of the car, a reflection of a studio light is visible on the windshield.
When the two dogs are let into the London house, one can be seen at the top of the stairs answering a call of nature.
In the WWI scene where Candy receives a message from a motorcycle despatch rider, the man is wearing the blue and white signaller's armband upside down.