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.