Continuity: During the opening sequence, a white car parked outside the prisoner's London flat disappears between shots as he drives up in the yellow Lotus and walks to the front door.

Continuity: While the prisoner is packing for his trip (in the opening title sequence), a beach photo placed in his travel bag rotates itself into a different position between shots.

Deliberate "mistake": During the opening credits, when he has resigned, a typewriter is seen to repeatedly put a letter onto the platen. In the next shot, a series of Xs are placed over the Prisoner's picture. The key that is repeatedly pressed is H. (The X key would have come from somewhere near the left of the picture of the keys, not the middle.).

Continuity: In both the opening and closing sequences, as well as in footage used throughout the series, "Rover" leaves the ocean floor as a transparent sphere, but arrives on the surface colored his usual opaque white.

Continuity: The Villager Rover attacks changes outfits several times between shots. He's wearing a striped sweater that turns into a pink jacket that turns back into the sweater, etc.

Plot hole: Everyone in the Village is supposed to have a number instead of a name. Yet, Tom Cobb, the ex-agent Number 6 recognizes in the medical ward, is for some reason an exception. Number 2, the doctor, Number 4 and Number 6 himself all call the man Cobb.

Revealing: Though the Village isn't supposed to have automobiles (only the little "golf cart" transports), there are several parked cars visible in the shot of Rover floating down to attack the fleeing Villager.

Visible crew/equipment: In the foot-chase-on-the-beach scene, there are tracks in the sand from the camera crew's truck. They vanish and then reappear when the camera angle changes.

Revealing: At one point, Rover rolls past the Village retirement home, but the film in this sequence was for some reason shown in reverse. Smoke from the building's fireplace is flowing back into the chimney instead of coming out.

Revealing: When Number 6 first enters the bedroom, the light that hangs from the ceiling is moving as though someone has brushed against it. But there's no one else in the room.

Continuity: The maid comes back to Number 6's house for the feather duster she left behind. While they talk, the duster changes positions on the table all by itself.

Revealing: Number 6 is supposedly flying the helicopter, trying to escape from the Village. There are shadows from the rotor blades crossing his face as he pilots the aircraft. But look closely at the top of the transparent cockpit bubble over his head: you can see the real copter blades - completely stationary and not moving at all.

Continuity: Rover drags Number 5 back out of the water to the beach and drops him with his feet pointing toward the recovery vehicle. He starts to get up, but when the shot cuts, he's lying flat again and has changed orientation on the sand, his head now pointing toward the vehicle.

Continuity: Watch the stone boat in the background as Number 6 and Number 2 discuss the oldsters having "every comfort." Between shots, the senior citizens vanish from the boat.

Continuity: The unfortunate Village resident suffocated by Rover is wearing sunglasses that disappear between shots.

Visible crew/equipment: As Number 6 storms out of Number 2's chamber, the camera dolly is briefly visible moving out of his way at the lower left of the screen.

Revealing: No automobiles are permitted in the Village - ever. Yet in aerial shots, a black car is sitting behind Number 2's residence.

Continuity: The dwarf Butler climbs in to pilot the helicopter - but when the aircraft actually takes off, it's obvious that the pilot is a full-sized person.

Continuity: When Number 6 first wakes up in his new house in the Village, there's an ornately carved wood panel covering the window. When he stands, it has disappeared.

Visible crew/equipment: Watch the bottom left corner of the screen when Rover turns around and begins pushing Number 6 away from the helicopter. A film crewmember's head (probably that of the technician operating the weather balloon that played Rover) appears briefly in the shot.