St James's is a central district in the City of Westminster, London, forming part of the West End. In the 17th century the area developed as a residential location for the British aristocracy, and around the 19th century was the focus of the development of gentlemen's clubs. Once part of the parish of St Martin in the Fields, much of it formed the parish of St James from 1685 to 1922. Since the Second World War the area has transitioned from residential to commercial use. St James's is bounded to the north by Piccadilly and Mayfair, to the west by Green Park, to the south by The Mall bounding St. James's Park, and to the east by Haymarket. History Toponymy The area's name is derived from the dedication of a 12th-century leper hospital to Saint James the Less. The hospital site is now occupied by St James's Palace. The area became known as "Clubland" because of the historic presence of gentlemen's clubs. The section of Regent Street (colloquially known as 'Lower Regent Street') that runs between Waterloo Place and Piccadilly Circus has been officially renamed 'Regent Street St James's’. Urban development St James's was once part of the same royal park as Green Park and St. James's Park. In the 1660s, Charles II gave the right to develop the area to Henry Jermyn, 1st Earl of St Albans who developed it as a predominantly aristocratic residential area around a grid of streets centred on St James's Square. Until the Second World War, St James's remained one of the most exclusive residential enclaves in London. Notable residences include St James's Palace, Clarence House, Marlborough House, Lancaster House, Spencer House, Schomberg House, Norfolk House and Bridgewater House. (See Townhouse (Great Britain) for the aristocratic nature of the speculative buildings.) Local government St James's was in the ancient parish of St Martin in the Fields in the Liberty of Westminster. Attempts made in 1664, 1668 and 1670 to separate St James's from the parish were resisted by St Martin's vestry. The building of St James's Church, Piccadilly in 1684 forced the issue, and a new parish of St James within the Liberty of Westminster was created in 1685. The parish stretched from Oxford Street in the north to Pall Mall in the south. It roughly corresponded to the contemporary St James's area, but extended into parts of Soho and Mayfair. Land south of