• When TV cameraman Joe falls into the cavern, the back of his head can be seen to fall off.
  • When Thunderbird 4 is shaken by the shock of the Fulmer Finance Building's collapse, water can be seen running down the outside of the aquarium positioned in front of the model set.
  • At the The Ned Cook Show, Doctor Godber is seen sitting in front of Bletcher, with around three rows of seats behind him. In the next shot, he appears with two rows behind him, sitting in front of Jeff.