Timeline of British history
Year Date Event
1801 17 March Henry Addington , 1st Viscount Sidmouth becomes Prime Minister
1804 10 May William Pitt the Younger becomes Prime Minister for the second time
1805 21 October The naval Battle of Trafalgar takes place
1806 11 February William Grenville , 1st Baron Grenville becomes Prime Minister
1807 25 March The Slave Trade Act 1807 is passed
1807 31 March William Cavendish-Bentinck , 3rd Duke of Portland becomes Prime Minister for the second time
1809 4 October Spencer Perceval becomes Prime Minister
1812 8 June Robert Jenkinson , 2nd Earl of Liverpool becomes Prime Minister
1815 18 June The Battle of Waterloo takes place
1815 20 November The Napoleonic Wars ends
1820 29 January King George III dies and George IV ascends the throne
1821 5 May The Guardian is first published , as The Manchester Guardian
1825 27 September The Stockton and Darlington railway , the world 's first public passenger railway , opens
1827 12 April George Canning becomes Prime Minister
1827 31 August F. J. Robinson , 1st Viscount Goderich becomes Prime Minister
1828 22 January Arthur Wellesley , 1st Duke of Wellington becomes Prime Minister
1829 13 April The Catholic Relief Act 1829 is passed
1830 26 June King George IV dies and William IV ascends the throne
1830 22 November Charles Grey , 2nd Earl Grey becomes Prime Minister
1832 7 June The Great Reform Act is passed , doubling the franchise
19th century
This is a timeline of British history, comprising important legal and territorial changes and political events in the United Kingdom and its predecessor states. To read about the background to these events, see History of England, History of Wales, History of Scotland, History of Ireland, History of the formation of the United Kingdom and History of the United Kingdom.