Brotherhood of Logicians

The Brotherhood of Logicians was an assemblage of intelligent humans who emphasised pure logic. Members Eric Klieg and Kaftan financed an archaeological expedition in search of the Cybermen. They believed they could form an alliance to help the Brotherhood seize power. (TV: The Tomb of the Cybermen)

Behind the scenes
The tongue-in-cheek article "You Know Our Ways" by Jonathan Morris in DWM 504 is formatted as an email sent to the Croydon and Bromley branch of the Brotherhood of Logicians concerning a recently acquired infostamp containing information on the Cybermen.