The name derives from the location of the original Metropolitan Police headquarters at 4 Whitehall Place, which had a rear entrance on a street called Great Scotland Yard. The Scotland Yard entrance became the public entrance to the police station, and over time the street and the Metropolitan Police became synonymous. The New York Times wrote in 1964 that just as Wall Street gave its name to New York's financial district, Scotland Yard became the name for police activity in London.
The force moved from Great Scotland Yard in 1890, to a newly completed building on the Victoria Embankment, and the name "New Scotland Yard" was adopted for the new headquarters. An adjacent building was completed in 1906. A third building was added in 1940. In 1967, the MPS moved its headquarters from the three-building complex to a tall, newly constructed building on Broadway in Victoria. In summer 2013, it was announced that the force would move to the Curtis Green Building – which is the third building of New Scotland Yard's previous site (1890–1967) – and that the headquarters would be renamed Scotland Yard. In November 2016, MPS moved to its new headquarters, which continues to bear the name of "New Scotland Yard."
The Metropolitan Police Service is responsible for law enforcement within Greater London, excluding the square mile of the City of London, which is covered by the City of London Police. Additionally, the London Underground and National Rail networks are the responsibility of the British Transport Police. The Metropolitan Police was formed by Robert Peel with the implementation of the Metropolitan Police Act, passed by Parliament in 1829. Peel, with the help of Eugène-François Vidocq, selected the original site on Whitehall Place for the new police headquarters. The first two commissioners, Charles Rowan and Richard Mayne, along with various police officers and staff, occupied the building. Previously a private house, 4 Whitehall Place ( ) backed onto a street called Great Scotland Yard.
By 1887, the Metropolitan Police headquarters had expanded from 4 Whitehall Place into several neighbouring addresses, including 3, 5, 21 and 22 Whitehall Place; 8 and 9 Great Scotland Yard, and several stables. Eventually, the service outgrew its original site, and new headquarters were built ( ) on the Victoria Embankment, overlooking the River Thames, south of what is now the Ministry of Defence's headquarters. In 1888, during the construction of the new building, workers discovered the dismembered torso of a female; the case, known as the 'Whitehall Mystery', was never solved. In 1890, police headquarters moved to the new location, which was named New Scotland Yard. By this time, the Metropolitan Police had grown from its initial 1,000 officers to about 13,000 and needed more administrative staff and a bigger headquarters. Further increases in the size and responsibilities of the force required even more administrators and space. Therefore, new buildings were constructed and completed in 1906 and 1940, so that New Scotland Yard became a three-building complex. ( ). The first two buildings are now a Grade I listed structure known as the Norman Shaw Buildings.
The original building at 4 Whitehall Place still has a rear entrance on Great Scotland Yard. Stables for some of the mounted branch are still located at 7 Great Scotland Yard, across the street from the first headquarters.
By the 1960s the requirements of modern technology and further increases in the size of the force meant that it had outgrown its three-building complex on Victoria Embankment. In 1967 New Scotland Yard moved to a newly constructed building on Broadway, which was an existing office block acquired under a long-term lease. From 1967 to 2016, the third building (then known as the Curtis Green Building) of the first New Scotland Yard was partly used as the base for the Met's Territorial Support Group.
The Met's senior management team, who oversee the service, were based at New Scotland Yard at 10 Broadway, close to St. James's Park station, along with the Met's crime database. This uses a national computer system developed for major crime enquiries by all British forces, called Home Office Large Major Enquiry System, more commonly referred to by the backronym HOLMES, which recognises the great fictional detective Sherlock Holmes. The training programme is called 'Elementary', after Holmes's well-known, yet apocryphal, phrase "elementary, my dear Watson". Administrative functions are based at the Empress State Building, and communication handling at the three Metcall complexes, rather than at Scotland Yard.
During the 2000s, a number of security measures were added to the exterior of New Scotland Yard, including concrete barriers in front of ground-level windows as a countermeasure against car bombing, a concrete wall around the entrance to the building, and a covered walkway from the street to the entrance into the building. Armed officers from the Diplomatic Protection Group patrolled the exterior of the building along with security staff.
In May 2013 the Metropolitan Police confirmed that the New Scotland Yard building on Broadway would be sold and the force's headquarters would be moved back to the Curtis Green Building ( ) on the Victoria Embankment, which would be renamed Scotland Yard. A competition was announced for architects to redesign the building prior to the Metropolitan Police moving to it in 2015. This building housed the Territorial Policing headquarters and is adjacent to the original "New Scotland Yard" (Norman Shaw North Building).
In December 2014, ahead of the move to the Embankment, the Metropolitan Police sold the then–New Scotland Yard building to Abu Dhabi Financial Group for £370 million.
In December 2015, construction work on the exterior of the Curtis Green building was completed. On 31 October 2016, the Metropolitan Police staff left New Scotland Yard – when ownership of the building was passed to Abu Dhabi Financial Group – and moved to their new headquarters on the Embankment. The new New Scotland Yard building was to be formally opened by Her Majesty Queen Elizabeth II on 23 March 2017, but that same day it was announced that the Royal opening would be postponed, due to the preceding day's terrorist attack at Westminster.
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