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.
The Last of the Cybernauts ...?? - S1-E3
Audio problem: During the opening scene when the cast are gathered around the piano singing "Happy Birthday" to John Steed, his voice is audible as a part of the singing from the start, but he doesn't start singing until the second line.
The Last of the Cybernauts ...?? - S1-E3
Factual error: When Kane pushes the Range Rover into Gambit, the hand print in the Range Rover's boot looks more like it was made in clay, not the steel panel of a car (which would have simply dented).