The Judoon prison was a maximum security facility which held the Thirteenth Doctor. It was an intergalactic prison, 79 billion light years away from Earth. It resembled an asteroid. (TV: Revolution of the Daleks)
The Thirteenth Doctor was captured by a Judoon cold case unit and sentenced to "whole of life imprisonment" to the Judoon's maximum security facility, both for going against the Division as the Fugitive Doctor, and for an additional 7000 charges against her. (TV: The Timeless Children)
The prison also contained a multitude of other convicted beings, such as a Weeping Angel, an Ood, a Sycorax, a Pting, a Silent, a Skithra and a Thijarian. The Doctor was eventually rescued by Captain Jack Harkness, using a temporal-freezing gateway disinhibitor bubble. (TV: Revolution of the Daleks)
