Sibylla's was a nightclub in the West End of London that operated from 1966 to 1968. It was located at 9 Swallow Street in the Mayfair area, close to Piccadilly Circus. The club's launch on 22 June 1966 was attended by many artists and celebrities, including the Beatles, members of the Rolling Stones, Michael Caine, Julie Christie, David Bailey and Mary Quant. Like the Ad Lib and the Scotch of St. James, the club was a popular meeting place for rock musicians and other artists until trends changed in the London scene.
Sibylla's was conceived as an exclusive venue for leading figures in the Swinging London era. Its major shareholders and owners were advertising copywriter Kevin Macdonald, photographer Terry Howard, and property developer Bruce Higham, while champion horse rider and baronet William Pigott-Brown provided much of the finance for the venture. George Harrison of the Beatles was given a shareholding in the club, in return for the publicity his association would bring, and disc jockey Alan Freeman was also a shareholder. The club's interior was designed by David Mlinaric. Since Sibylla's closed, the site has continued to be a nightclub location.
In their plan for the club, Kevin Macdonald, Terry Howard and Bruce Higham conceived of a meeting place for the elite of Swinging London. Higham said the clientele they envisaged "[have] a kind of self-confidence, an awareness, which they transpose to their environment".Sir William Pigott-Brown, a baronet, provided half the funds for the venture.George Harrison of the Beatles, a friend of Howard, was given a 10 per cent shareholding, on the understanding that his name could be used to attract publicity, and disc jockey Alan Freeman was also a stakeholder.Guinness heir Tara Browne was another of the financial backers.