Brooks's Club

Brooks's Club, Westminster, was the main social centre for the Whigs and for a while, the Grenvillites

Founded in 1764 as a social and non-political club by William Almack, moving to 60 St James's Street in 1778. It established a reputation for heavy gambling. Among the members were Fox, Pitt, Reynolds, Garrick, O'Connell Horace Walpole, Wilberforce, Palmerston and Hume.

The older Grenvillites, Nugent Buckingham and William Grenville, were not members, though Thomas Grenville was a member from 1779 to 1794. Numerous younger members, however, joined:

The Grenvillites withdrew in 1822, when the first Duke gave his support for Liverpool. 

Sources

Sack p 126-7; Weinreb.