The end of "Doomsday" is featured as part of the pre-title sequence, although the scene was actually refilmed. In his online podcast commentary for the episode, David Tennant explained that this was due to a change in lighting supervisors, and the one hired for this episode liked to light the TARDIS interior differently; the scene therefore had to be refilmed in order to match. The "Doctor Who" logo in the opening credits has been slightly redesigned from the previous one, with more background detail and flare on the "lozenge" that the words "Doctor Who" sit on.