Continuity mistake: When Purdey is talking to Steed through the window of his hotel room, her hand positions change between the exterior and interior shots. (00:33:40)
The Last of the Cybernauts ...?? - S1-E3
Continuity mistake: At the start, Kane crashes an Austin Westminster - the burnt out wreck seen in his lair is a Wolseley 6/99.
The Last of the Cybernauts ...?? - S1-E3
Continuity mistake: During the car chase in the car-park, Kane's contact crashes into a purple Hillman which reappears undamaged later in the scene.
Continuity mistake: The yellow Aston Martin DBS that Gambit and Purdey give chase to at 0:09:45 transforms itself into a yellow Audi 100 Coupe at 00:15:00. Also the "P" registration mark (1975-6) on the Aston is incorrect as the marque had been discontinued in 1972.
Cat Amongst the Pigeons - S1-E5
Continuity mistake: When Purdey and Gambit are escorting Rydercroft from his plane, the registration number is ATUC. Later, when he gets back into the plane to take off, the registration number is G-ATPN.
Continuity mistake: During the snooker game between Steed and Gambit, Steed plays right-handed but in the close-ups of the trick shots, the cue is held left-handed.