Type 70, also known as Mark 70, was a type of TARDIS used by Time Lords. The Fifth Doctor noted that a Type 70 TARDIS could break through a temporal distortion grid, whereas his own Type 40 could not. (AUDIO: Singularity) CIA Coordinator Vansell used a Type 70 TARDIS. (AUDIO: The Sirens of Time) Robert Knox owned a Mark 70, which could be voice controlled. He purchased it from a Nekkistani on Gryben. (AUDIO: Medicinal Purposes, AUDIO: Assassin in the Limelight)