High Tribunal

By some accounts, the High Tribunal was the ruling body of the Time Lords, consisting of the First Time Lord, Second Time Lord, and Third Time Lord. (PROSE: Doctor Who and the Doomsday Weapon)

The High Tribunal was the court which prosecuted the Second Doctor in the Doctor's trial. (PROSE: Doctor Who and the Doomsday Weapon, The Quantum Archangel)

The High Tribunal was also behind the trial of the Sixth Doctor. (PROSE: Synthespians™, The Quantum Archangel)