Chancellery Guard
The Chancellery Guard or Chancery Guard (COMIC: Ophiuchus) was the organisation responsible for security and law enforcement on Gallifrey. They reported to the Castellan and were normally equipped with staser pistols. (TV: The Deadly Assassin)
Function
The Chancellery Guards were the police service of Gallifrey, the only people allowed to carry arms inside of the Citadel. (TV: The Invasion of Time)
Structure
In overall charge of the Chancellery Guard was the Castellan. The Castellan acted as police chief and often sat on the High Council due to his important position. (TV: Arc of Infinity) The Fourth Doctor once referred to Kelner as a "jumped up guard." (TV: The Invasion of Time)
Reporting directly to the Castellan were the Chancellery Guard Commanders. The commander rank was denoted by ornate breastplates, gold coloured or adorned helmets and uniform braiding. (TV: The Deadly Assassin)
Directly below the Commanders were the Captains. (AUDIO: Gallifrey) There were also Lieutenants (PROSE: Blood Harvest) and Sergeants, with Commander Andred, impressed by K9's ability, noting that if K9 were a member of the Chancellery Guard, he would make him one. (TV: The Invasion of Time)
Rank-and-file guards wore red uniforms and helmets, with a white cape. The uniform was accented in white striping. The guards communicated through wristbands and carried stasers as their sidearm. (TV: The Deadly Assassin) The boots and elbow pads that the Chancellery Guard wore changed from a copper colour to silver at different points in the Time Lords' regime. (TV: Arc of Infinity)
History
The First Doctor and his granddaughter Susan Foreman were being pursued by the Chancellery Guard at the time of their departure from Gallifrey. (AUDIO: The Beginning)
Posing as a "Castellan Bond", rogue Time Agent Scott Thrower had his group of shapeshifting Gizou mercenaries disguise themselves as Chancellery Guards on Helion. (COMIC: Time Fraud)
Jerricho advised and oversaw the execution of the Fifth Doctor when his body was possessed by Omega. (TV: Arc of Infinity)
Members
Commanders
Commander Hilred had jurisdiction over Sector 7, which included the Main Tower. Castellan Spandrell ordered him to disfigure the Decayed Master's body. However, the Master was alive and killed Hilred using his Tissue Compression Eliminator. (TV: The Deadly Assassin)
Commander Andred helped defeat the Sontarans after they invaded Gallifrey. (TV: The Invasion of Time) He married Leela (TV: Arc of Infinity) and became castellan. (AUDIO: Lies)
Commander Maxil was promoted to castellan after Andred's supposed death. (AUDIO: Lies, Imperiatrix) He sided with Pandora and Darkel in the civil war and, after their defeat, he was demoted back to the rank of commander. (AUDIO: Appropriation)
Leran was a commander. (PROSE: Blood Harvest)
Commander Raldeth helped repel the Daleks (AUDIO: The Apocalypse Element) and the Temporal Powers during their respective invasions of Gallifrey. (AUDIO: Appropriation) He was killed during the explosion of the Monan Host embassy caused by the Warpsmiths of Phaidon. (AUDIO: Enemy Lines)
Commander Jevon encountered Romana II after she returned to Gallifrey from the Axis. (AUDIO: Ascension)
Commander Lukas was an aide and bodyguard to Romana III in a timeline later averted by Braxiatel. He remained back in Omega's collapsing domain to allow Narvin, Ace and his President to escape. (AUDIO: Intervention Earth)
Captains
A captain of the Chancellery Guard was killed by the Eleven in his escape from Gallifrey. The Eleven took some of the captain's possessions to assist him. (AUDIO: The Eleven)
Captain Janartis sided with Pandora in the civil war and was promoted to commander. He wanted to become castellan but, after losing the civil war, was exiled and became a pawn for Free Time after regenerating with the Dogma Virus. (AUDIO: Panacea)
Captain Solex was tasked with supplying the Technomancers with Time Lord corpses to be resurrected. (AUDIO: Legion of the Lost) He sacrificed himself to save the War Doctor. (AUDIO: A Thing of Guile)
Other members
Redred was sent to the House of Lungbarrow around the time that the First Doctor left Gallifrey. He became trapped within its transmat when the House was buried. (PROSE: Lungbarrow)
Solis was a member of Chancellor Goth's personal guard. He was hypnotised by the Decayed Master and killed by Castellan Spandrell (TV: The Deadly Assassin) and Coordinator Engin. (PROSE: Doctor Who and the Deadly Assassin)
Jomdek was a member of the Chancellery Guard by the time the Seventh Doctor visited the House of Lungbarrow. (PROSE: Lungbarrow)
Robersuun participated in the civil war (AUDIO: Fractures) and was charged with guarding Romana II after she was removed from power. (AUDIO: Mindbomb)
Tessno was part of the resistance against the Doom Coalition. She was shot and killed by the Eleven. (AUDIO: Stop the Clock)
Veklin was loyal to Cardinal Ollistra and spied on Padrac per her orders. (AUDIO: Songs of Love) She later fought in the Last Great Time War. (AUDIO: The Innocent, etc.)
Lintok tracked Leela through the Capitol per the War Doctor's request. (AUDIO: The Enigma Dimension)
Behind the scenes
In the TV series there is only ever one Castellan seen at a time, but in the Gallifrey audio series, each Chapter House appears to have at least one Castellan. The ones in the audio series are referred to as "chapter Castellans" whilst in Arc of Infinity, the Castellan is referred to as "the duty Castellan".