Shadow Proclamation

The Shadow Proclamation are most likely a compact or treaty related to Galactic Law (or even higher authorities].

The Doctor used the Shadow Proclamation as a means to speak with the Nestene Consciousness (DW: Rose)

The treaty allows one party to seek an audience with another under peaceful contract. Under the Proclamtion, the "seeding" (in this case of infant Adipose) of Level 5 planets was prohibited, meaning that Miss Foster was breaking the Proclamation by seeding the Adipose on Earth. (A Level 5 planet) (DW:Partners in Crime)

Other references

 * Rose Tyler tried unsuccessfully to bluff the leader of the Sycorax by mentioning the Shadow Proclamation, in a jumbled way. (DW: The Christmas Invasion)