During the war between the Authority and Lord Asriel, the Gallivespian spy-captain Lord Roke noted that the CCD was one of the two most active branches of the Magisterium. He had a spy by the name of Chevalier Tialys reporting to him from the CCD.
- Father Makepwe: the oldest of the twelve members
- Luis Gomez: one of the twelve members
- Pavel Rasek: the alethiometrist
- Sister Agnes: a stenographer
- Sister Monica: a stenographer
- Brother Louis: the Convenor of the Secretariat