Galactic law was the system of law, parallel to international law on Earth, upheld by many interstellar governments in Mutter's Spiral. It was enforced by several species, including the Judoon, the Atraxi, and the Megara. (TV: Smith and Jones, The Eleventh Hour, The Stones of Blood) The Galactic Alliance were keen upholders of galactic law. (TV: From Raxacoricofallapatorius With Love)
The Galactic Charter was an important document of galactic law. (TV: The Stones of Blood)
Specific laws
Brutal methods of mental processing contravened all galactic laws. (TV: The War Games)
Galactic bylaw 19b dictated that dogs must be kept on leads. (TV: From Raxacoricofallapatorius With Love)
Article XII of the Galactic Code banned golems. (AUDIO: The Beast of Orlok)
Galactic Law said that first claim of mining rights on any given planet would always go to the planet's native population. (AUDIO: The Prisoner's Dilemma)
In 2382 Galactic Law stated that any mining operations on consecrated planets, moons and asteroids was illegal. (PROSE: Fear of the Dark)
Laws pertaining to Level 5 planets
Galactic law said that developing worlds classed as Level 5 planets (such as Earth in the 21st century and earlier) could not be approached for legal matters. They had no jurisdiction over the planet, and methods such as an H2O scoop must be used to transport any places required to be visited to neutral territory, such as the Moon. (TV: Smith and Jones)
Seeding life on a Level 5 planet was against galactic law. (TV: Partners in Crime)
Destruction of a Level 5 planet was illegal unless the planet had committed a crime against another planet/race. (TV: The Eleventh Hour)