Move - And You're Dead - S1-E20
Continuity mistake: When Alan contacts his father at Tracy Island, Jeff asks him "How's the situation, boy?" Alan informs him that Grandma has passed out in the heat and Alan's face is covered in sweat. But after a quick cut to Jeff saying "Passed out?" we return to Alan, and the sweat on his face has disappeared.
Audio problem: When Lovegrove realises that Lambert is still in the vault, he is talking with Carter, whose voice is initially that of Shane Rimmer but then changes to a completely different voice provided by David Graham.
Audio problem: When the Tower Controller says, "How are those fire tenders coming", it is said by Ray Barrett instead of Matt Zimmerman.
Factual error: In the Tube, Virgin and Allan are seen going from Piccadilly Circus station to Bank station using the same tunnel. These two stations are not even on the same line.
Continuity mistake: In the pyramid, we see a closeup of Scott's hand grabbing the gun. The color of his uniform changes for a lighter blue in that shot.
Visible crew/equipment: When Lambert is leaving his office in the vault, the shadow of a puppeteer is visible on the door frame.
Pit of Peril - S1-E2
Continuity mistake: When the shaft that Virgil slides down connects to Thunderbird 2, we can see Pod 3 to the right of Thunderbird 2. Seconds after Virgil's chair has locked into place, we see the pods slide across from left to right, including Pod 3. I thought that was to the right of TB2? It couldn't have been quickly moved to the left, as we see that Pod transportation is very slow. It couldn't of been a spare, as there is no sign of it when we see Pod 1, etc, roll to the right.
Continuity mistake: When Thunderbird 1 arrives at the danger zone, it descends with wheels on the end of the landing gear, but when Thunderbird 1 lands, it lands with skids on the end of the landing gear, and the wheels are no longer there.
Terror in New York City - S1-E4
Continuity mistake: In "The Ned Cook Show" portion of this episode, Dr. Godber is initially seen sitting in front of Bletcher with at least three rows of seats behind him, but, in another shot, he then appears two rows from the back sat in front of Jeff Tracey.
Continuity mistake: In the Thunderbird 2 hangar, Virgil selects Pod 5, but when the cliff face drops down, Pod 2 is on the right of Thunderbird 2 (instead of Pod 4, which it should be).
Move - And You're Dead - S1-E20
Continuity mistake: As Alan makes his telecall to Grandma, the close-up of his hand dialing her number shows the push-button dial panel with letters on the left and numbers on the right, but on the puppet-sized telecall unit, the numbers are on the left and the letters are on the right.
Pit of Peril - S1-E2
Revealing mistake: When Scott has retrieved Virgil from the Pit using The Mole, when it reverses back onto its chassis above ground, you can see dust flying upwards from the ground. It is therefore obvious that this is footage played backwards. (00:39:05)
Attack of the Alligators - S1-E23
Continuity mistake: During the after-mission chat, Alan is wearing a bandage above his left eye due to an injury he picked up on duty. If you look carefully this bandage sometimes changes between shots; it is particularly noticeable when he's in the bathroom with Tin-Tin. Also, the bandage is too small and too high up to have covered the injury adequately. (00:45:25)
Continuity mistake: When Virgil radios to Jeff that he is about to land on Mount Arkon, Jeff asks him what the weather's like, to which Virgil replies: "Pretty stormy, Father. Pretty stormy." Then we cut to an exterior of the airborne Thunderbird 2, which is absolutely covered in snow. Just moments later we get a long shot and suddenly Thunderbird 2 is no longer covered in snow. We then get a close-up of the cockpit view, where we see Virgil and Brains, and Thunderbird 2 is covered in snow again. We soon get another couple of shots where it alternates between Thunderbird 2 not snow-covered and then being covered in snow again. (00:28:00)
Continuity mistake: As Fireflash makes its first landing attempt onto the elevator cars, the radio control elevator car on the left can be seen to bear the number 4, even before car 3 had crashed and car 4 had left the pod.
Continuity mistake: As Thunderbird 1 crashes in the desert, Scott is thrown forward and he bangs his chin on TB1's flight controls. But after TB1 has crashed, Scott is shown with his forehead on the controls.
Other mistake: As Virgil prepares to clear the wreckage of the tower from the rescue area using the Firefly, Scott tells him that he will go over to Thunderbird 2 to prepare the Mole for tunneling. The Tower Controller then says to Scott, "I've got a fast car ready for you outside" without moving his lips.
Other mistake: At the end of the episode in the space rocket Scott says "you can say that again" without moving his lips.
Factual error: Although the Thompson Tower is situated in the United States, a sign on the wall of the Control Centre uses the British spelling of 'Centre' instead of the American 'Center'.
Pit of Peril - S1-E2
Continuity mistake: Although the Sidewinder fell on its back, the crew is always seen standing the right way in the control room.