Sergeant

Sergeant was a military or police rank, generally associated with people who weren't officers. Details were known about many sergeants working for UNIT, of whom the best documented was undoubtedly Sergeant Benton.

Named

 * Abeland, a police officer from the village of Farringham in NA: Human Nature
 * Baker (The Banquo Legacy), a police officer from the village of Three Sisters
 * Bradshaw (The Crimes of Thomas Brewster), a sergeant who worked under Detective Inspector Patricia Menzies (BFA: The Crimes of Thomas Brewster)
 * Andy Davidson, a former co-worker of Gwen Cooper, whose promotion to police sergeant may have had something to do with his part in Children of Earth (TWN: Long Time Dead)
 * Cormac, a Glaswegian police sergeant who liased with Jack Harkness, when Torchwood Two called the latter to Scotland (TM: Captain Jack and the Selkie)
 * Dennison, from Planet of the Dead''
 * Ian Jenner, a Metropolitan Police Service sergeant who was on the trail of Christina de Souza. (DW: Planet of the Dead)
 * Kyle (The Talons of Weng-Chiang), from The Talons of Weng-Chiang
 * Lange, a Metropolitan Police sergeant known to Sgt Quick (JAL: The Similarity Engine)
 * Markham, an Edwardian police sergeant in DW: Black Orchid
 * Harry Pike, a London police sergeant in the mid-21st century, who was the father of Darius Pike, an ally of K9 Mark 2 (K9TV: The Last Precinct)
 * Price (World War Three), from World War Three
 * Quick, a sergeant who was friendly with George Litefoot and Henry Gordon Jago (JAL: all series)
 * Vince Wilson, a police officer in Moreton Harwood who briefly met Sarah Jane Smith. (KAC: A Girl's Best Friend)

Unnamed

 * Desk Sergeant from DW: Blink
 * Custody Sergeant from TW: Small Worlds
 * Station Sergeant, from DW: "The Feast of Steven"

Unnamed

 * Duty Sergeant, who imprisoned Jack Harkness. (TW: Children of Earth: Day Five
 * Sergeant (The War Machines) from DW: The War Machines

Named

 * Sandra Applegate, a sergeant stationed at Caregan barracks at the time of a Torchwood Three investigation of the Cowbridge training camp (TWN: Another Life)
 * Arnold (The Web of Fear), a staff sergeant in the regular British Army unit that pre-dated UNIT
 * Bee (Another Life), a British Army soldier stationed at Cowbridge who mysteriously went rogue and committed several murders, forcing Torchwood Three to investigate (TWN: Another Life)
 * Duffy, a British Army sergeant who ran the detention centre that briefly incarcerated the Third Doctor and Sarah Jane Smith in Invasion of the Dinosaurs
 * Johnson, a British Army sergeant who initially tried to keep Gwen Cooper away from a meteorite impact site (TW: Day One)
 * Leigh, a World War II British sergeant who served under Commandr Millington at Maiden's Point (DW: The Curse of Fenric)
 * Peters (The Invasion), a regular army sergeant who served under Major Branwell and briefly took the commands of Zoe Heriot during the events of DW: The Invasion
 * Rilke, an 18th century red coat (BFA: City of Spires)
 * Mike Smith, a Royal Air Force sergeant who was a member of The Association, and once had a fleeting relationship with Ace (DW: Remembrance of the Daleks)
 * Willis (The War Games), a World War I sergeant caught up in the War Lord's War Games (DW: The War Games)
 * Wood (No Man's Land), a British Army sergeant from World War I who once tortured Hex. (BFA: No Man's Land)

Unnamed

 * American Sergeant, from DW: The Tenth Planet
 * Sergeant (The Reign of Terror), from The Reign of Terror

Named

 * Calder, from Resurrection of the Daleks
 * Gazelle (Zagreus), a likely imaginary figure (BFA: Zagreus
 * Haval, a sergeant-at-arms to the Lord Geoffrey de Beauvain during the Crusades (TVC: The Magician)
 * Ishem, a United States Air Force sergeant guarding the Eleventh Doctor's dwarf star alloy prison in Day of the Moon
 * Kortez an eventual Colonel in UNISYC, who originally met the Doctor when he was a sergeant (EDA: Alien Bodies)
 * Jeff Kovacs, a World War II-era American sergeant (EDA: Autumn Mist)
 * Prozorov, a World War II-era Russian sergeant who served under Captain Sorin (DW: The Curse of Fenric)
 * Rugg, an imaginary sergeant called into existence by the Celestial Toymaker (DW: The Celestial Toymaker)
 * to Benik from DW: The Enemy of the World
 * Thompson (The War Games), a Confederate sergeant forced to participate in the War Games run by the War Lord (DW: The War Games)
 * Trofimov, a World War II-era Russian sergeant who served under Captain Sorin (DWN: The Curse of Fenric)

Named

 * Paterson, an ex-British Territorial Army sergeant whom the Seventh Doctor and Ace met (DW: Survival)

Unnamed

 * Sergeant (The Five Doctors), who was on Colonel Charles Crichton's staff at the time of the Brigadier's retirement (DW: The Five Doctors)
 * Sergeant (Spearhead from Space) from DW: Spearhead from Space
 * UNIT Sergeant (The Time Monster) from DW: The Time Monster

Named

 * John Benton, who served on the Brigadier's personal staff for a number of years, and who knew at least the Second, Third and Fourth Doctors, as well as several of the Doctor's other companions
 * Calhoun who served under Captain Magambo in DW: Planet of the Dead
 * Annie Frederick, a staff sergeant who was once in charge of public relations
 * French who served under General Alistair Gordon Lethbridge-Stewart (BFA: The Coup)
 * Hart (Doctor Who and the Silurians), from Doctor Who and the Silurians
 * Henderson (The Seeds of Doom), from The Seeds of Doom
 * Machi, a rogue UNIT soldier who once attempted to kill the Eleventh Doctor. (DWM: The Golden Ones)
 * Robin Marshall, a guard assigned to UNIT's Vault 75-73/Whitehall who was known to Liz Shaw (CC: Shadow of the Past)
 * Osgood (The Dæmons), a technical sergeant who helped the Third Doctor circumvent a barrier around Devil's End in DW: The Dæmons
 * James Ramsay, a UNIT soldier integral to an Auton invasion of Earth depicted in BBV Productions' Auton Trilogy
 * Talbot, who died while working with the Tenth Doctor and Majenta Pryce (DWM: The Age of Ice)
 * Mike Yates, who was a sergeant at the time he first met the Third Doctor and Liz Shaw. (MA: The Eye of the Giant)
 * Walters (The Invasion), who served under the Brigadier during the events of DW: The Invasion
 * Willis (The Wasting), a UNIT sergeant heard in BFA: The Wasting
 * Zbrigniev, who served under Brigadier Winifred Bambera during the events of Battlefield

Named

 * Bryn (The Twilight Kingdom) a soldier whom the Eighth Doctor, Charley Pollard and C'rizz in the Divergent Universe (BFA: The Twilight Kingdom)
 * Cook (The Indestructable Man), a sergeant in a prison, though not actually a government-run one, in PDA: The Indestructible Man
 * Stewart (The Indestructible Man) a sergeant in a militia force under the control of Mackenzie, who once had Jamie McCrimmon in his squad (PDA: The Indestructible Man)
 * Frith, head of security for the Forge at the time of the start of Project Lazarus
 * Kracauer, the leader of Kane's forces on Iceworld. (DW: Dragonfire)
 * Mitchell (Earthshock), a trooper seen in DW: Earthshock
 * Joseph Willow, a civilian who played the part of a sergeant in Sir George Hutchinson's war games in the village of Little Hodcombe (DW: The Awakening)
 * Zogroth, a sergeant of the Wrarth Warriors seen in DWM: The Star Beast

As name
to be added

Behind the scenes

 * Joanne Sergeant, who played the maid in BBCR: The Ghosts of N-Space