Named after the horse auctioneers founded in 1766 as Tattersall's whose sales rooms were moved from near Hyde Park Corner to nearby on Knightsbridge Green between 1865 and 1939, this 1958 corner pub comprises a main bar on the ground floor and a quieter downstairs Knights Bar and dining area that can be hired for functions. Four cask ale handpumps and at least three ales should be available here; further updates welcome. Unusually for Westminster, the licence allows sale of alcohol from 9am.