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Sloane Square is a small square on the boundaries of the central London districts of Knightsbridge, Belgravia and Chelsea, located 2.1 miles southwest of Charing Cross, in the Royal Borough of Kensington and Chelsea. The area forms a boundary between the two largest aristocratic estates in London, the Grosvenor Estate and the Cadogan. The square is part of the Hans Town area designed in 1771 by Henry Holland Snr. and Henry Holland Jnr. Both the town and square were named after Sir Hans Sloane (1660–1753), whose heirs owned the land at the time.
The square lies at the east end of the trendy Kings Road and at the south end of the more conventionally smart Sloane Street linking to Knightsbridge. In the early 1980s, it lent its name to the "Sloane Rangers", the young underemployed, often snooty and ostentatiously well-off members of the upper classes. The square has two notable buildings: Peter Jones department store and the Royal Court Theatre. The River Westbourne is carried over the tube station in a large iron pipe. On the northern side of the square is the Sloane Square Hotel.

The Metropolitan Drinking Fountain and Cattle Trough Association was founded in 1859 initially to provide clean drinking water in public places for people in London, but soon extended to include animals and also outside London itself. It is still active (now known as The Drinking Fountain Association), with the objectives of:

• The promotion of the provision of drinking water for people and animals in the United Kingdom and Overseas
• The preservation of the Association's archive materials, artefacts, drinking fountains, cattle troughs and other installations.

For full details of its history, see Link.