Gallifrey (Exile)

In a parallel universe, Time Lords on Gallifrey found gender change via regeneration a crime.

History
The Doctor and Susan left Gallifrey together, while the Master ran away later.

After the War Lord's trial and erasure, two Time Lords were ready to try the Doctor, when he escaped. They were sent to Earth to track him down and put him on trial. (AUDIO: Exile)

Technology
On Gallifrey, Time Lords had TARDISes, Time Rings, and temporal dissolution technology. (AUDIO: Exile)