The Galactic Police were organisations that enforced law throughout the galaxy. Galactic law was enforced by several species, including the Megara, the Judoon and the Atraxi. (TV: The Stones of Blood, Smith and Jones, The Eleventh Hour) The Slitheen initially thought Sarah Jane Smith was an agent of the Galactic Police in their first encounter with her. (TV: Revenge of the Slitheen) Milo and Frank Shakespeare believed that the Eighth Doctor was an agent of the Galactic Police. (COMIC: Doctor Who and the Nightmare Game)