Continuity mistake: When Number 2 is shouting at Number 14, calling him a traitor, Number 2's long strands of hair are flying all over his head. In the very next shot, though, his hair has nicely combed itself and he's well-groomed again.
Continuity mistake: The new supervisor holds a clipboard in both hands up near his chest. When the shot cuts, he's abruptly holding it in one hand down at his thigh.
Continuity mistake: Number 6 points the mirror out to sea and tries to send a signal. But when we see him from the POV of the security camera, he's pointing the signal mirror toward the Village instead. When the shot cuts back to him on the beach, the buildings are again behind him and he's facing seaward again.
Continuity mistake: During their kosho match, Number 6 ends up dangling Number 14 over the water. In the first shot, he's holding the man with his left hand. In the next, he's using his right hand.
Continuity mistake: Just before the fight begins on the roadway, Number 6, in full shot, steps off the grass and onto the road. But the next close-up of him shows him on the grass again.
Continuity mistake: Between the time the coded note is tied to the pigeon and the time it is intercepted and handed to Number 2, the handwriting on it changes completely.
Continuity mistake: When he's standing against the wall of the kosho chamber, Number 6 is holding onto the rail, but when the camera reverses angles, he isn't. This goes back and forth several times.
Continuity mistake: During Number 6's visit to the Village Shop, the blue and yellow signs in the window switch places between takes, then return to their original positions.
Continuity mistake: Number 6 recites a classified ad in Spanish to the young woman at the newstand. His phrase contains eight words, but when she reads them back, there are nine.
Revealing mistake: After Number 14 convinces Number 2 to let him deal with Number 6 both of them leave 2's office. As they do, you can see the "metal" on the doorframe has started to bubble. (00:30:57)
Continuity mistake: When Number 6 writes the coded message he uses black ink, after Number 2 intercepts the message it changes to blue ink. (00:37:24 - 00:38:30)
Visible crew/equipment: When Number 6 is listening to classical music in the listening booth, each time he puts his head into the booth (after switching records) there is a specific shot behind his shoulder where you can see the heads of two crew members reflected in the glass of the listening booth. This happens 3 times and is very visible on Blu-ray. (00:10:33)
Chosen answer: 1) It's never made entirely clear, but it seems that the government, Six's employers, are involved. 2) Because they wanted to know why he resigned. 3) It's never revealed, although many fans assume that Six is really John Drake, McGoohan's character from the prior show Danger Man. McGoohan has, however, denied that this was the intent and there are some notable differences between the characters. 4) It's never revealed, although, as, in the final episode, Six and his companions are able to drive to London, it must logically be located within the British Isles. 5) No details are ever given as to who has ultimate authority over the Village.
Tailkinker ★