Scotland Yard

Scotland Yard was the base of the Metropolitan Police Service in London. Its full name was New Scotland Yard, but it was rarely referred to as such. (PROSE: Cat's Cradle: Witch Mark) The name was often used as a metonym for the service. (PROSE: The Banquo Legacy) This meant that introducing oneself to be "Scotland Yard" actually referred to an officer of the Met. (COMIC: The Curious Tale of Spring-Heeled Jack) In the 22nd century, Scotland Yard was known as New New Scotland Yard. (COMIC: Pawns of the Zenith)

History
In 1881, Inspector Alfred Mackenzie of Scotland Yard was was summoned to Gabriel Chase by Lady Margaret Pritchard to investigate the disappearance of George Pritchard. (TV: Ghost Light)

In the 1890s, Henry Gordon Jago claimed that he and Professor George Litefoot solved more crimes than all of the inspectors in Scotland Yard put together. (AUDIO: Litefoot and Sanders)

In the late 19th century, Inspector Cotton of Scotland Yard required the assistance of Vastra and Jenny Flint regarding an incident in Millwall. (AUDIO: The Cars That Ate London!)

In 1966, Dodo Chaplet described what would happen if a policeman entered the TARDIS as "Scotland Yard whipped off into time and space." A few days later on 20 July, Detective Inspector Crossland of Scotland Yard investigated Chameleon Tours with the Second Doctor following the murder of his colleague, police detective Gascoigne. (TV: The Faceless Ones)

In 1992, Graham Stevens was the only member of Scotland Yard's Paranormal Investigations Team. (PROSE: Cat's Cradle: Witch Mark)

In 1994, Liz Shaw remarked to Louise Bayliss and Patricia Haggard that P.R.O.B.E. could not hand over a single case to Scotland Yard for fear of having their limited funding withdrawn by the government. (HOMEVID: The Zero Imperative)

In the 21st century, Jac was able to hack the CCTV from Scotland Yard. (TV: The Zygon Invasion)

As an alias for the Doctor
The Fourth Doctor claimed to Henry Gordon Jago and Professor George Litefoot two to be an amateur investigator called in by Scotland Yard. (TV: The Talons of Weng-Chiang)

In 1926, the Tenth Doctor claimed to Agatha Christie to be "Chief Inspector Smith of Scotland Yard", with Donna Noble as "the plucky young girl who helps [him] out", following the murder of Professor Gerald Peach at Eddison Manor. (TV: The Unicorn and the Wasp)

While investigating the activities of the Silents in 1969, the Eleventh Doctor claimed to be from Scotland Yard when questioned about his presence by President Nixon. (TV: The Impossible Astronaut)

The Twelfth Doctor attempted this alias, but was not generally successful; in 1651, the Twelfth Doctor pretended to be an agent of Scotland Yard, until he realised it hadn't been founded yet, (TV: The Woman Who Lived) and in the 2010s, the Twelfth Doctor claimed to Lucy Fletcher to be "Doctor Dan Dangerous from Scotland Yard, Scotland", which she knew was false. (TV: The Return of Doctor Mysterio)