The Hayward Gallery opened on the South Bank in 1968. The Brutalist building has no permanent collection and stages three or four major exhibitions a year.
The Institute of Contemporary Arts was founded in London in 1946 and has worked from Nash House on The Mall since 1968, with galleries, cinemas and a theatre.
White Cube opened in 1993 in a single room on Duke Street, St James's. In London it now runs Mason's Yard and the Bermondsey Street gallery, opened in 2011.
Camden Art Centre began in 1965 in the former Hampstead Central Library on Arkwright Road, a Grade II listed building of 1897, with exhibitions and residencies.
Saatchi Gallery opened in 1985 in a former paint factory in St John's Wood. Since 2008 it has filled the Duke of York's HQ on the King's Road, Chelsea.
Sadie Coles HQ opened in London in 1997 and now runs three West End spaces: 17 Savile Row in Mayfair, Kingly Street in Soho and Bury Street in St James's.
Timothy Taylor opened in Mayfair in 1996. Its London gallery now fills a five-storey Georgian townhouse on Bolton Street, with a second space in Tribeca.