Illuminati

The Illuminati were, according to many conspiracy theories, a secret society that controlled Earth governments. (AUDIO: 1963: The Assassination Games) Some, including Cleo Proctor, also believed that the controlled the media, though Shawna Thompson suggested it was the Murdochs. (AUDIO: Hysteria)

The Sixth Doctor compared the Sentinels of the New Dawn to the Illuminati, (AUDIO: Leviathan) while Ace compared the Light to them. (AUDIO: 1963: The Assassination Games)