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The house at 44 Berkeley Square was built in 1740 (to the design of the architect William Kent) by Lady Isabella Finch (1700-1771), the 7th daughter of Daniel Finch, 7th Earl of Winchilsea, 2nd Earl of Nottingham (1647–1730). It is famed for its theatrical staircase and large Grand Saloon, "one of the finest rooms of its scale and period in London", the design of which was based on the famous Double Cube Room at Wilton House in Wiltshire. She never married but became Lady of the Bedchamber to Princess Amelia, a spinster aunt of King George III. It was purchased after her death by William Henry Fortescue, 1st Earl of Clermont (1722-1806), an Irish peer, and served as his London townhouse. The Clermont Club later moved to 27–28 Curzon Street, also in Mayfair, and was renamed Aspinall's.
It was the first London casino opened by John Aspinall after he received a gaming licence under Britain's new gambling law. Aspinall sold the club in 1972 to Playboy Enterprises, which was forced to sell it in 1982 when it lost its licence.
Private Eye allegations
In 1976 Goldsmith initiated a libel action against the satirical magazine Private Eye, which had alleged that members of the Clermont Set, including Goldsmith, had conspired to shelter Lord Lucan after Lucan had murdered his family nanny, Sandra Rivett. Goldsmith won a partial victory and eventually reached a settlement with the magazine.
- The Mayfair Set, a 1999 BAFTA Award-winning documentary series by Adam Curtis describing how buccaneer capitalists were allowed to shape the climate of the Thatcher years, focussing on members of the Clermont Club.
- Kinross, Lord
- 44 Berkeley Square, A Commentary by Lord Kinross Illustrated by Adrian Daintrey, London, 1962 
- Walsh, Dominic (2006-08-16). "Clermont Club set to fall to Malaysian billionaire". The Times. London. Retrieved 2011-05-19.
- Hiscock, John. "Gangsters in a class of their own ...", Daily Telegraph 21 February 2009
- Wright, Jade, "Expect fireworks", Liverpool Echo, 23 February 2009