Move - And You're Dead - S1-E20
Continuity mistake: When Thunderbird 2 touches down on the sand to release Alan in his car, there is no "2" underneath its front section, but the number reappears when the pod is being released.
Revealing mistake: The raindrops on the faces of Eddie Houseman and his colleagues during the storm are disproportionately large.
Suggested correction: This is part of the art style of the show - the same reason everyone's eyes are so disproportionately large, it helps the viewer to see details that would otherwise be too small to spot.
Continuity mistake: When Lady Penelope and Tin-Tin pause to turn on their ski thrusts as they return to the hotel from Olsen's chalet, it begins to snow, but the snow has stopped when they set off again just seconds later.
Continuity mistake: When we see the Hood destroying The Mighty Atom at the end of the episode, the control box is much closer to the device than it was in the previous shot.
Continuity mistake: When Parker pours Penelope a glass of sherry, the close-up shots of his human hand show he places the glass directly onto the table, but the wider shots of the puppets show the glass on Penelope's place mat with no time for it to have moved.
Continuity mistake: When Jeff tells Alan it's time to relieve John in the space station, he's holding a cigar in his right hand, but after a quick cut to Alan saying "All set, father," we return to Jeff, and his cigar has suddenly disappeared.
Visible crew/equipment: When Thunderbird 1 returns to its hangar at Tracy Island at the start of the episode, the wires used to lower the rocket into the hangar can be seen.
Visible crew/equipment: When Penelope pulls the cord to ring the alarm for Parker, look on the right side of your screen and you can see part of a crew man's finger holding Penelope's arm.
Continuity mistake: When Scott, Virgil and Gordon are playing snooker at Tracy Island, the balls on the snooker table change position between shots.
Continuity mistake: When Parker is sitting at the table waiting for his meal prepared by Lil, you can see that his knife is pointing to the left, but when Lil says "Now listen here, Nosey!" we cut back to Parker, and the knife is now facing straight.
Continuity mistake: In several wide shots of Thunderbird 1 and Eddie's tractor on the cliff, the yellow pins that were fired from TB1 earlier and the rock they were holding have disappeared.
Continuity mistake: When Tin-Tin and Gordon are swimming in the pool at Tracy Island, the beach ball in the pool has nothing on it, but in the next shot when we see Virgil sitting down reading, the ball is thrown out of the pool and there are green stars on it.
Continuity mistake: When Scott is travelling to the pyramid in Thunderbird 1, his International Rescue hat keeps disappearing and reappearing between shots.
Terror in New York City - S1-E4
Revealing mistake: When the Firefly is knocked back by an explosion after putting out the oil well fire, we see a view of Virgil in the cockpit. You can tell this shot is reversed as there is a back-to-front IR logo.
Continuity mistake: When Thunderbird 4 comes out of the pod with the sealing device, there is a "4" on the back of the craft, but when it goes to clamp the device over the base of the fire jet, the "4" has disappeared.
Audio problem: When the Atom Sub Reefer Captain says "OK, Lieutenant, dive." it is said by Jeremy Wilkin instead of Ray Barrett.
Terror in New York City - S1-E4
Continuity mistake: When Scott is at his control panel at the crash site in New York City, the top of the microphone keeps disappearing and reappearing between shots.
Give or Take a Million - S2-E6
Continuity mistake: At the beginning of the episode, we see the models of Thunderbirds 1, 3 and 4 on the table next to Nicky and you can see that Thunderbird 1's nosecone near the edge of the table. But when Nicky asks for Thunderbird 3 to be launched, we see a close up of the model, and Thunderbird 1 is now situated next to Thunderbird 4.
Continuity mistake: When Scott and Virgil contact Tracy Island and their reports are affected by a bad interference, Jeff is wearing his glasses, but later on in the scene they disappear.
Continuity mistake: When Wilson asks Lindsey in the jeep "Which way do you want to go?" you can see he is wearing his headphones, but after cutting to Lindsey, we return to Wilson and his headphones have disappeared.