Prime Ministers of the United Kingdom (1721-1979)

Events

Robert Walpole

4 April 1721 - 15 May 1730

Robert Walpole, 1st Earl of Oxford, KG, KB, PC

Electoral mandate: 1722
MP for King's Lynn; Party: Whig; Sovereign: George I, George II

Ministerial portfolios held during tenure: First Lord of the Treasury, Chancellor of the Exchequer, Leader of the House of Commons

Robert Walpole

15 May 1730 - 11 February 1742

Robert Walpole, 1st Earl of Oxford, KG, KB, PC

Electoral mandates: 1727, 1734, 1741
Party: Whig; Sovereign: George II

Ministerial portfolios held during tenure: First Lord of the Treasury, Chancellor of the Exchequer, Leader of the House of Commons

Earl of Wilmington

16 February 1742 - 2 July 1743

Spencer Compton, 1st Earl of Wilmington, KG, KB, PC

Party: Whig; Sovereign: George II

Ministerial portfolios held during tenure: First Lord of the Treasury

Henry Pelham

27 August 1743 - 10 February 1746

Henry Pelham, PC, FRS

MP for Sussex; Party: Whig; Sovereign: George II

Ministerial portfolios held during tenure: First Lord of the Treasury, Chancellor of the Exchequer, Leader of the House of Commons

Henry Pelham

12 February 1746 - 6 March 1754

Henry Pelham, PC, FRS

Electoral mandate: 1747
MP for Sussex; Party: Whig; Sovereign: George II

Ministerial portfolios held during tenure: First Lord of the Treasury, Chancellor of the Exchequer, Leader of the House of Commons

Duke of Newcastle

16 March 1754 - 16 November 1756

Thomas Pelham-Holles, 1st Duke of Newcastle upon Tyne and 1st Duke of Newcastle-under-Lyme, KG, PC, FRS

Electoral mandate: 1754
Party: Whig; Sovereign: George II

Ministerial portfolios held during tenure: First Lord of the Treasury, Leader of the House of Lords

Duke of Devonshire

16 November 1756 - 25 June 1757

William Cavendish, 4th Duke of Devonshire, KG, PC

Party: Whig; Sovereign: George II

Ministerial portfolios held during tenure: First Lord of the Treasury, Leader of the House of Lords

Duke of Newcastle

2 July 1757 - 26 May 1762

Thomas Pelham-Holles, 1st Duke of Newcastle upon Tyne and 1st Duke of Newcastle-under-Lyme, KG, PC, FRS

Electoral mandate: 1761
Party: Whig; Sovereign: George II, George III

Ministerial portfolios held during tenure: First Lord of the Treasury, Leader of the House of Lords

Earl of Bute

26 May 1762 - 8 April 1763

John Stuart, 3rd Earl of Bute, KG, PC

Party: Tory; Sovereign: George III

Ministerial portfolios held during tenure: First Lord of the Treasury, Leader of the House of Lords

George Grenville

16 April 1763 - 13 July 1765

MP for Buckingham; Party: Whig (Grenvillite); Sovereign: George III

Ministerial portfolios held during tenure: First Lord of the Treasury, Chancellor of the Exchequer, Leader of the House of Commons

Marquess of Rockingham

13 July 1765 - 30 July 1766

Charles Watson-Wentworth, 2nd Marquess of Rockingham, KG, PC, FRS

Party: Whigs (Rockingham); Sovereign: George III

Ministerial portfolios held during tenure: First Lord of the Treasury, Leader of the House of Lords

Earl of Chatham

30 July 1766 - 14 October 1768

William Pitt, 1st Earl of Chatham, PC, FRS

Electoral mandate: 1768
MP for Bath; Party: Whig (Chathamite); Sovereign: George III
Elevated to the Peerage of Great Britain on 4 August 1766

Ministerial portfolios held during tenure: Lord Keeper of the Privy Seal

Duke of Grafton

14 October 1768 - 28 January 1770

Augustus Henry FitzRoy, 3rd Duke of Grafton, KG, PC

Party: Whigs (Chathamite); Sovereign: George III

Ministerial portfolios held during tenure: First Lord of the Treasury, Leader of the House of Lords