Galactic Alliance

The Galactic Alliance was an organising body of the Mutter's Spiral.

A member of the Slitheen family, impersonating Ambassador Rahnius, came to Sarah Jane Smith, claiming that he was sent to give her an award for her good deeds. (SJA: From Raxacoricofallapatorius With Love)

Bill and his partner Bott were undercover Galactic Alliance members. (NSA: Martha in the Mirror)
 * Whether these are the same Galactic Alliances is unknown.