List of British Prime Ministers Sir Robert Walpole The Earl of Wilmington Henry Pelham Thomas Pelham-Holles The Duke of Newcastle William Cavendish The Duke of Devonshire Thomas Pelham-Holles The Duke of Newcastle (2nd ministry) John Stuart The Earl of Bute George Grenville Charles Watson-Wentworth The Marquess of Rockingham (1st ministry) William Pitt the Elder The [...]