Police

Police forces were government organisations charged with the responsibility of maintaining law and order.

The Doctor compared the Krynoid pods to police as both travelled in pairs. (DW: The Seeds of Doom)

Instances of Police appearance

 * A lone policeman patrolled the Coal Hill area of London in 1963. Despite passing a junkyard owned by I.M. Foreman he did not notice the presence of a strange humming police box. (DW: An Unearthly Child)
 * Thanks to the intercession of the temporarily miniaturized Doctor and his companions, police (including PC Bert Rowse) were able to arrest corrupt industrialist Forester for the murder of Arnold Farrow. (DW: Planet of Giants)
 * Pursued by the Daleks through time and space, the TARDIS materialized in the yard of a police station in 1965 Liverpool, its scanner malfunctioning. After some trouble with the local police, the Doctor managed to repair the malfunctioning scanner and depart. (DW: The Daleks' Master Plan)
 * When a policeman approached the TARDIS, the Doctor hung a sign reading "out of order" on the front of his ship. The policeman moved on after seeing the sign. (DW: The War Machines)
 * A policeman spotted the Doctor and his companions on a runway at Gatwick Airport and chased after them. When they scattered, the policeman went after Ben. (DW: The Faceless Ones)
 * Two Autons impersonated police in a failed attempt to kill the Doctor and Jo Grant. (DW: Terror of the Autons)
 * Gustave Lytton had two robot henchmen which resembled policemen. (DW: Resurrection of the Daleks/Attack of the Cybermen)
 * A number of police and detectives were involved in the cases surrounding the suicide of Gordon Seavers and the murders at Banquo Manor. (EDA: The Banquo Legacy)
 * Gwen Cooper, who most recently worked for Torchwood Three, used to be a police officer, along with most of her friends. (TW: Everything Changes)
 * Police had a violent encounter with English Civil War soldiers when they came through the Cardiff Space-Time Rift. (TW: End of Days)
 * The Torchwood Three team pretended to be police while questioning Rhys Williams. (TW: Meat)
 * Rory Williams was mistaken for a plain-clothes policeman by Ambrose Northover. (DW: The Hungry Earth)
 * Harry Pike, father of Darius Pike, was one of the last policemen to serve in England, before The Department replaced them with CCPCs. (K9TV: The Last Precinct)

Apocrypha

 * Tom Campbell was a Police Constable from London who witnessed a robbery and burst into Dr. Who's TARDIS. (Film: Daleks - Invasion Earth 2150 AD)

Behind the scenes

 * The policeman seen at the beginning of An Unearthly Child has the distinction of being the very first character to appear on Doctor Who.