: A new monster was introduced—a crude, blocky version of a Cyberman draped in black robes—designed to act as animalistic scouts for the Cybermen.
: The set for the Cyberfactory was actually the reused and disguised Torchwood Hub set from the spin-off series Torchwood . [S0E9] The Next Doctor
: The episode famously features a low-tech Victorian "TARDIS," which stands for T ethered A erial R elease D eveloped I n S tyle—a hot air balloon used by David Morrissey's character. : A new monster was introduced—a crude, blocky
: Guest star David Morrissey was reportedly cast only five days before filming began. [S0E9] The Next Doctor
: This was the last episode of Doctor Who to be produced and broadcast in standard definition.