K is for Kill: The Tiger Awakes (1) - S2-E8
Visible crew/equipment: Steed is seen driving along with Purdey and Gambit in rural France. The camera was probably mounted on the front passenger side door, pointing in. As they near their destination, the camera pans to reveal a farm house, and as it pans, a professional-looking microphone can be seen sitting on the dashboard.
K is for Kill: The Tiger Awakes (1) - S2-E8
Visible crew/equipment: A Russian solder peers into a Salvation Army hall. In the shot that follows, from his point of view, there's a very obvious studio light on a tripod in shot.
The Tale of the Big Why - S1-E8
Visible crew/equipment: When Gambit is on the wing of Turner's plane, there is a close-up of Turner where a crewmember is visible in the background.
Revealing mistake: Our heroes arrive at an RAF base. Purdey hears a loud aircraft noise and looks up to the sky - cut to shot of a fighter jet. For a few frames after the cut, a caption that reads "The Engineer in the RAF" is just visible. It would seem they 'borrowed' some material from an RAF training film. (Indeed, a later shot of shells exploding was obviously taken from a videotaped TV programme, judging by the 'lag' effect caused by the tube camera that would've been used).
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
Visible crew/equipment: When Purdey runs to Steed's front door after finding the 'Sanctuary of Wings' ring, the boom mike appears in the bottom left of frame as she calls after Steed.
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: 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.
Medium Rare - S2-E3
Visible crew/equipment: When Wallace meets Purdey and Steed as they examine Freddy's body, the boom mike dips into shot.
Dead Men are Dangerous - S2-E1
Visible crew/equipment: When Steed comes out of his house following the sound of the loudspeaker, two studio lights can be seen reflected in the windows.
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.