 The episode was given to post-production team The Mill after filming concluded. The number of effects in the first draft was almost three times larger than broadcast; consequently, several scenes — most notably, all but one shot of the attack on the Valiant — were cut from the episode. The Mill created two notable effects for "The Stolen Earth": the invasion of New York City, using reconnaissance photos and establishing shots from the filming of "Daleks in Manhattan" to create a 2.5D shot of the city; and the planetary array at the Medusa Cascade, using a fully three-dimensional model.
