Ian Wilson appears briefly as an evangelist, walking past the camera in the crowd outside Aunt Dolly's home during the strike. He then reappears as a union man in the TV audience (he is hit in the face and a close-up shows his reaction). They could be the same character, but nothing in the film connects them.
In the shot preceding Stanley Windrush placing his bowler hat on the conveyor belt you can see the hat already on the conveyor.
When the strikers march to the managing director's office, five men start the walk, but only four arrive. This was due to Sam Kydd having a cold, and taking the day off.
When Stanley is in the confectionery factory he feels ill, so he puts his hat on the conveyor belt. The spacing between the sweets and his hat is different when they enter the machine and when they emerge from the other side, and between a long shot and a close-up.
While Stanley is on the forklift speaking with Mr. Kite, from behind Stanley his tie flaps wildly in the wind, viewed from Stanley's front, his tie is undisturbed.
While Stanley Windrush demonstrates his forklift driving skills for Mr. Waters, he says "Well, I'm shifting these generators from the stores to here, for loading up." He drives over a bump and the (presumed full) boxes bounce as though they were empty.
When Mrs. Kite and Cynthia are reading the newspaper reports about the strike, Mrs. Kite briefly turns a paper over while setting it down. The bottom half is blank - the prop papers were made up only on the side that would be seen in the shot.
Aunt Dolly is chauffeur-driven to Stanley's digs at Fred Kite's house. As the Rolls Royce turns the corner, the actors cast shadows in two directions.
When the workers leave the Missiles factory to go on strike one sign is seen to read Missles [sic] Ltd Car Park.
Dennis Price, properly noted in the closing credits for his role as Bertram Tracepurcel, has his given name spelled with only one "n" (Denis) in the opening credits.