# First Pitt ministry

William Pitt the Younger led the government of the Kingdom of Great Britain from 1783 to 1801.
In 1800, the Acts of Union between Great Britain and Ireland were accepted by their respective parliaments, creating the new United Kingdom of Great Britain and Ireland (UK), which would be governed by the former Parliament of Great Britain (now the UK Parliament). Pitt governed this new state for the first month of its existence, until differences with King George III over Catholic emancipation caused him to resign.

## Cabinet

| Portfolio | Minister | Took office | Left office | Party |
| First Lord of the TreasuryChancellor of the Exchequer | William Pitt the Younger(head of ministry) | 19 December 1783 (1783-12-19) | 14 March 1801 (1801-03-14) | Tory |
| Lord Chancellor | The Lord Thurlow | 23 December 1783 (1783-12-23) | June 1792 (1792-06) | Tory |
| Lord Chancellor | The Lord Loughborough | 28 January 1793 (1793-01-28) | 14 April 1801 (1801-04-14) | Independent |
| Lord President of the Council | The Earl Gower | 19 December 1783 (1783-12-19) | 1 December 1784 (1784-12-01) | Tory |
| Lord President of the Council | The Earl Camden | 1 December 1784 (1784-12-01) | 18 April 1794 (1794-04-18) | Tory |
| Lord President of the Council | The Earl Fitzwilliam | 1 July 1794 (1794-07-01) | 17 December 1794 (1794-12-17) | Whig |
| Lord President of the Council | The Earl of Mansfield | 17 December 1794 (1794-12-17) | 1 September 1796 (1796-09-01) | Tory |
| Lord President of the Council | The Earl of Chatham | 21 September 1796 (1796-09-21) | Continued | Independent |
| Lord Privy Seal | The Duke of Rutland | 23 December 1783 (1783-12-23) | 27 November 1784 (1784-11-27) | Independent |
| Lord Privy Seal | The Earl Gower | 27 November 1784 (1784-11-27) | 1794 (1794) | Tory |
| Lord Privy Seal | The Earl Spencer | 1794 (1794) | 16 July 1794 (1794-07-16) | Whig |
| Lord Privy Seal | The Earl of Chatham | 16 July 1794 (1794-07-16) | 14 February 1798 (1798-02-14) | Independent |
| Lord Privy Seal | The Earl of Westmorland | 14 February 1798 (1798-02-14) | Continued | Tory |
| Secretary of State for Foreign Affairs | The Earl Temple | 19 December 1783 (1783-12-19) | 23 December 1783 (1783-12-23) | Tory |
| Secretary of State for Foreign Affairs | The Duke of Leeds | 23 December 1783 (1783-12-23) | May 1791 (1791-05) | Tory |
| Secretary of State for Foreign Affairs | The Lord Grenville | 8 June 1791 (1791-06-08) | 20 February 1801 (1801-02-20) | Tory |
| Secretary of State for Foreign Affairs | Lord Hawkesbury | 20 February 1801 (1801-02-20) | Continued | Tory |
| Secretary of State for War | Henry Dundas | 11 July 1794 (1794-07-11) | 17 March 1801 (1801-03-17) | Tory |
| Secretary at War | William Windham | 1794 (1794) | 1801 (1801) | Whig |
| Secretary of State for the Home Department | The Earl Temple | 19 December 1783 (1783-12-19) | 23 December 1783 (1783-12-23) | Tory |
| Secretary of State for the Home Department | The Lord Sydney | 23 December 1783 (1783-12-23) | 5 June 1789 (1789-06-05) | Whig |
| Secretary of State for the Home Department | The Lord Grenville | 5 June 1789 (1789-06-05) | 8 June 1791 (1791-06-08) | Tory |
| Secretary of State for the Home Department | Henry Dundas | 8 June 1791 (1791-06-08) | 11 July 1794 (1794-07-11) | Tory |
| Secretary of State for the Home Department | The Duke of Portland | 11 July 1794 (1794-07-11) | Continued | Whig |
| First Lord of the Admiralty | The Viscount Howe | 1783 (1783) | 1788 (1788) | Independent |
| First Lord of the Admiralty | The Earl of Chatham | 1788 (1788) | 1794 (1794) | Independent |
| First Lord of the Admiralty | The Earl Spencer | 1794 (1794) | 1801 (1801) | Whig |
| First Lord of the Admiralty | The Earl of St Vincent | 1801 (1801) | Continued | Whig |
| Master-General of the Ordnance | The Duke of Richmond | 1784 (1784) | 1795 (1795) | Tory |
| Master-General of the Ordnance | The Marquess Cornwallis | 1795 (1795) | 1801 (1801) | Independent |
| President of the Board of Trade | The Earl of Liverpool | 23 August 1786 (1786-08-23) | Continued | Tory |
| Lord Lieutenant of Ireland | The Earl of Northington | 3 May 1783 (1783-05-03) | 12 February 1784 (1784-02-12) | Independent |
| Lord Lieutenant of Ireland | The Duke of Rutland | 12 February 1784 (1784-02-12) | 27 October 1787 (1787-10-27) | Independent |
| Lord Lieutenant of Ireland | The Marquess of Buckingham | 27 October 1787 (1787-10-27) | 24 October 1789 (1789-10-24) | Tory |
| Lord Lieutenant of Ireland | The Earl of Westmorland | 24 October 1789 (1789-10-24) | 13 December 1794 (1794-12-13) | Tory |
| Lord Lieutenant of Ireland | The Earl Fitzwilliam | 13 December 1794 (1794-12-13) | 13 March 1795 (1795-03-13) | Whig |
| Lord Lieutenant of Ireland | The Earl Camden | 13 March 1795 (1795-03-13) | 14 June 1798 (1798-06-14) | Tory |
| Lord Lieutenant of Ireland | The Marquess Cornwallis | 14 June 1798 (1798-06-14) | 27 April 1801 (1801-04-27) | Independent |

### Changes

* March 1784 – The Duke of Rutland becomes Lord Lieutenant of Ireland, remaining also Lord Privy Seal.
* December 1784 – Lord Gower (Lord Stafford from 1786) succeeds Rutland as Lord Privy Seal (Rutland remains Viceroy of Ireland). Lord Camden succeeds Gower as Lord President.
* November 1787 – Lord Buckingham succeeds Rutland as Lord Lieutenant of Ireland.
* July 1788 – Lord Chatham, Pitt's elder brother, succeeds Lord Howe as First Lord of the Admiralty.
* June 1789 – William Grenville (Lord Grenville from 1790) succeeds Lord Sydney as Home Secretary.
* October 1789 – Lord Westmorland succeeds Buckingham as Lord Lieutenant of Ireland.
* June 1791 –
** Grenville succeeds the Duke of Leeds (Lord Carmarthen before 1789) as Foreign Secretary.
** Henry Dundas succeeds Grenville as Home Secretary.
** Lord Hawkesbury (from 1796 Earl of Liverpool), the President of the Board of Trade, joins the Cabinet.
* June 1792 – Lord Thurlow resigns as Lord Chancellor. The Great Seal goes into commission.
* January 1793 – Lord Loughborough becomes Lord Chancellor.
* July 1794 –
** Lord Fitzwilliam succeeds Camden as Lord President.
** Dundas takes the new Secretaryship of State for War, while the Duke of Portland succeeds him as Home Secretary.
** Lord Spencer succeeds Stafford as Lord Privy Seal.
** William Windham enters the Cabinet as Secretary at War.
* December 1794 –
** Chatham succeeds Spencer as Lord Privy Seal.
** Spencer succeeds Chatham as First Lord of the Admiralty.
** Fitzwilliam succeeds Westmorland as Viceroy of Ireland.
** Lord Mansfield succeeds Fitzwilliam as Lord President.
* February 1795 – Lord Cornwallis succeeds the Duke of Richmond as Master-General of the Ordnance.
* March 1795 – Camden succeeds Fitzwilliam as Lord Lieutenant of Ireland.
* September 1796 – Chatham succeeds Mansfield as Lord President. Chatham remains Lord Privy Seal.
* February 1798 – Westmorland succeeds Chatham as Lord Privy Seal. Chatham remains Lord President.
* June 1798 – Cornwallis succeeds Camden as Lord Lieutenant of Ireland, remaining also Master-General of the Ordnance.
* February 1801 – Grenville, Spencer, and Windham resign from the Cabinet. The first two are succeeded by Lord Hawkesbury and Lord St Vincent, while Windham's successor is not in the Cabinet.