BRIEF HISTORY DURING THE SNOW ERA (1813-58)
Horses were bought and sold during the eighteenth and nineteenth centuries at the Horse and Carriage Repository on Upper Saint Martin's Lane near Leicester Square. The business was owned by the Aldridge family from 1776 to 1826, followed by a series of other owners until 1955-6 when the building was demolished. The facility was known as Aldridge's Horse and Carriage Repository during the lifetime of John Snow.
In 1843, the Repository front on Upper Saint Martin's Lane was compulsorily acquired by the government to widen the street. As a result, a new facade was built on the north side of the building, which became the main entrance. All kinds of horses were traded at the Repository, but not race horses.
The building is not identified in Reynold's 1859 map but is located at the top of cell L15, just above "wp" in Newport Street.
Source:
Sheppard FHW (ed). Survey of London, Vol. 34, 1966.