A private members club it was founded in 1862 by six military officers and based at 18 Clifford House but moved several times over the years until it opened at its present location of 4 St James’s Square in 1999. Originally men only, women are now admitted.

It came to be known as the In and Out Club because of the prominent signage that was replicated at it’s new location which between 1912 to 1942 had been the home of Nancy Astor, the first woman to take her seat as a member of parliament in 1919. (The first woman to be elected to the Commons was Constance Markievicz, in the general election of 1918. However as a member of Sinn Fein, she did not take her seat).

