Pit of Peril - S1-E2
Continuity mistake: When we see a model of the US Army helicopter and the four crew members outside it, you can see there is no-one inside the helicopter, but when we see the crew members talking outside the helicopter, a man has suddenly appeared.
Continuity mistake: At the beginning of the episode, we see Thunderbird 1 and there is only one "TB1" logo on the rocket. But when the Zombites craft start attacking Thunderbird 1, there are two "TB1" logos.
Continuity mistake: The characters all refer to Williams's station as Dunsley Tracker, but in a close-up of the console, the caption above the alert light reads 'Densley Tracker'.
Continuity mistake: Before going on board Thunderbird 3, Alan is wearing a brown suit and Scott is wearing a yellow suit and orange shirt. But when Alan goes up the elevator in Thunderbird 3, his clothes have changed to a green checked shirt and beige trousers, and when Scott returns to Tracy Island, his clothes have changed to a blue roll-neck and checked jacket.
Attack of the Alligators - S1-E23
Continuity mistake: When Jeff and Virgil are talking about how to deal with the alligator situation at the house, Jeff says that Pod 6 would be the best choice. Yet when Thunderbird 2 arrives at the scene, it is not Pod 6 that has been chosen - it is Pod 4.
Continuity mistake: Alan and Scott launched Thunderbird 3 to go to Thunderbird 5 and relieve John from his duties in the space station. You can see John leaving Thunderbird 5 to go with Scott to Thunderbird 3, but when Scott returns to Tracy Island, John is nowhere to be seen.
Continuity mistake: When Thunderbird 2 is inside the hangar, it unloads Pod 1, but the numeral on the puppet-sized pod door in the close-up shots doesn't match the one on the model pod seen in long-shot.
Continuity mistake: When Thunderbird 1 arrives at the danger zone, there are no markings down the length of the vehicle when it lands, but lettering appears after Scott calls for help with his equipment. This lettering is in a completely different font to that seen on the vehicle during the launch sequence.
Continuity mistake: In the Thompson Tower at one point, Blanche and Tommy are sitting on a bench whilst Joe keeps hitting the steel door. When the Tower Control assistant switches on the television, he says "How did they get in there?" and we see a picture of the family. This time, it's a different picture to the one seen before as Blanche and Tommy are not sitting on a bench, and Joe is nowhere near a steel door.
Pit of Peril - S1-E2
Continuity mistake: Once Frank has started talking for the first time in the episode, he has taken his hat off. Once the Sidewinder has started moving again his hat has reappeared back on his head. The moment it tips on its side his hat is once again off.
Continuity mistake: When the hood parks his car to watch the first Red Arrow crash, there is a white and pink car parked beside him. When he leaves, the white car is still there, but has changed parking lanes and the pink car is replaced with a red car.
Continuity mistake: In one zoomed out shot of Virgil standing beside the tower with the Thunderizer moving closer towards him, he is no longer wearing his raincoat.
Continuity mistake: While Prescott, Dempsey and Kenyon are in the castle, there is a glass, a bottle and another glass (in that order diagonally) in front of Prescott. In a close up shot of him, the green bottle has move several inches to the left.
Continuity mistake: When Gordon is climbing up Fireflash to the cockpit, we see him just about to put the left rubber suckers onto the glass. However, in the close up shot, he is putting it onto the blue metal of the craft.
Continuity mistake: The Mighty Atom is brown but changes to gray in closeups.
Attack of the Alligators - S1-E23
Continuity mistake: When Kalp makes his surprise appearance via Lopez's secret waterway, after shooting Scott's gun out of his hand, he holds up a test tube of Theramine. As he says, "Remarkable discovery." in the close-up, the position of Kalp's hand differs. (00:34:10)
Continuity mistake: After Thunderbird 1 is shot down in the Sahara, Scott is hanging unconscious out of the craft's front door. When Scott and Lindsey spot Thunderbird 1, the door to the craft is closed.
Continuity mistake: When Jeff pushes the button next to his seat to do "Operation Cover Up" at the end of the episode, there's a closeup of his hand as he leans over to press the button while he is sitting down, but in the next shot he is suddenly standing up near the portraits of his sons.
Terror in New York City - S1-E4
Continuity mistake: When we see Virgil in his sick bed after crash landing on Tracy Island, he has a bandage around his head and there is a blood stain on the bandage above his left eye. But when Gordon comes into his room to watch the moving of the Empire State Building on television, the blood stain has disappeared.
Continuity mistake: When they are travelling the disused London Underground tunnels, Virgil is on the red hoverbike and Alan is on the blue hoverbike. In the next shot, they have swapped bikes, but when they arrive at the bank they have swapped back again.
