Prime Minister of Britain

Prime Minister of Commonwealth of Britain
Incumbent William Fawcett since 7th May 2012
Style	The Right Honourable
Residence	10 Downing Street London, Britain
Term length	Five year term which can be renewed indefinitely.
Inaugural holder	Sir Robert Walpole as First Lord of the Treasury and de facto first Prime Minister.
Formation	15th April 1945
Deputy	Deputy Prime Minister

The prime minister of the Commonwealth of Britain is the elected head of government in Britain. They are the leader of the lower house of Britannia, the House of Commons as well as the executive branch the Cabinet of Ministers. The current prime minister is William Fawcett of the Conservative Party, who was elected in 2012.

Prior to 1919 the office was not established by any official law. The origins of the position can be traced back to parliamentary reform in the 1700's that saw the Lord Protector of Britannia take a more consultative role as gradually more power was handed over to parliament, with the leader of the dominant political coalition or party in parliament often acting as the unofficial head of government in the Lord Protector's steed, although the latter still had the ability to function as an autocrat. The mid-1800's saw the beginnings of a Westminster system of governance under the Lord Protector Arthur Wellesley who saw the role of prime minister become more influential within government as the Lord Protector became an increasingly ceremonial position outside of military affairs. However by 1919 the influence of prime minister had been reduced to the Lord Protector's deputy who served as the de facto autocrat of Britain.

Following the British Revolution the role of Lord Protector carried less power as the prime minister was inaugurated as the official head of government although in practice the Council of State led a collective leadership with the prime minister being regarded as a first amongst equals. Since 1945 the role of prime minister has been firmly established as the pre-eminent figure in British politics, with the head of state the Paramount Leader having an entirely ceremonial role.

Those who hold the office of Prime Minister also hold the positions of First Minister of the Treasury and the Minister for the Civil Service.

List of prime ministers

№		Name	Term of Office		Political Party	Lord Protector
			Took Office	Left Office
	1	Sir Robert Walpole	4 April 1721	11 February 1742	Whig	Thomas Essex, Duke of Essex William Crompton, Duke of Buckingham
	2	Spencer Compton, 1st Earl of Wilmington	11 February 1742	2 July 1743 †	Whig	William Crompton, Duke of Buckingham
	3	Henry Pelham	2 July 1743	6 March 1754 †	Whig	William Crompton, Duke of Buckingham
	4	Thomas Pelham-Holles, 1st Duke of Newcastle	6 March 1754	16 November 1756	Whig	William Crompton, Duke of Buckingham
	5	William Cavendish, 4th Duke of Devonshire	16 November 1756	25 June 1757	Whig	<br[[>William Crompton, Duke of Buckingham]] | Morgan Lancaster, Baron of Lancashire
	6	Thomas Pelham-Holles, 1st Duke of Newcastle	25 June 1757	26 May 1762	Whig	Morgan Lancaster, Baron of Lancashire
	7	John Stuart, 3rd Earl of Bute	26 May 1762	8 April 1763	Tory	Morgan Lancaster, Baron of Lancashire
	9	George Grenville	16 April 1763	13 July 1765	Whig	Morgan Lancaster, Baron of Lancashire
	9	Charles Watson-Wentworth, 2nd Marquess of Rockingham	13 July 1765	30 July 1766	Whig	Morgan Lancaster, Baron of Lancashire
	10	William Pitt, 1st Earl of Chatham	30 July 1766	14 October 1768	Whig	Morgan Lancaster, Baron of Lancashire
	11	Augustus FitzRoy, 3rd Duke of Grafton	14 October 1768	28 January 1770	Whig	Morgan Lancaster, Baron of Lancashire
	12	Frederick North, Lord North	28 January 1770	22 March 1782	Tory	Morgan Lancaster, Baron of Lancashire
	13	Charles Watson-Wentworth, 2nd Marquess of Rockingham	27 March 1782	1 July 1782 †	Whig	Morgan Lancaster, Baron of Lancashire
	14	William Petty, 2nd Earl of Shelburne	4 July 1782	2 April 1783	Whig	Morgan Lancaster, Baron of Lancashire Charles FitzRoy, Duke of Northumberland
	15	William Cavendish-Bentinck, 3rd Duke of Portland	2 April 1783	19 December 1783	Whig	Charles FitzRoy, Duke of Northumberland
	16	William Pitt the Younger	19 December 1783	14 March 1801	Tory	Charles FitzRoy, Duke of Northumberland
	17	Henry Addington	17 March 1801	10 May 1804	Tory	Charles FitzRoy, Duke of Northumberland
	18	William Pitt the Younger	10 May 1804	23 January 1806 †	Tory	Charles FitzRoy, Duke of Northumberland
	19	William Wyndham Grenville, 1st Baron Grenville	11 February 1806	31 March 1807	Whig	Charles FitzRoy, Duke of Northumberland
	20	William Cavendish-Bentinck, 3rd Duke of Portland	31 March 1807	4 October 1809	Tory	Charles FitzRoy, Duke of Northumberland James Alderidge, 3rd Baron Alderidge
	21	Spencer Perceval	4 October 1809	11 May 1812 †	Tory	James Alderidge, 3rd Baron Alderidge
	22	Robert Banks Jenkinson, 2nd Earl of Liverpool	8 June 1812	9 April 1827	Tory	James Alderidge, 3rd Baron Alderidge
	23	George Canning	10 April 1827	8 August 1827 †	Tory	James Alderidge, 3rd Baron Alderidge
	23	Frederick John Robinson, 1st Viscount Goderich	31 August 1827	16 November 1830	Tory	James Alderidge, 3rd Baron Alderidge Arthur Wellesley, 1st Duke of Wellington
	24	Charles Grey, 2nd Earl Grey	22 November 1830	9 July 1834	Whig	Arthur Wellesley, 1st Duke of Wellington
	25	William Lamb, 2nd Viscount Melbourne	16 July 1834	14 November 1834	Whig	Arthur Wellesley, 1st Duke of Wellington
	N/A	Arthur Wellesley, 1st Duke of Wellington (acting)	14 November 1834	10 December 1834	N/A	Arthur Wellesley, 1st Duke of Wellington
	26	Sir Robert Peel	10 December 1834	8 April 1835	Conservative	Arthur Wellesley, 1st Duke of Wellington
	27	William Lamb, 2nd Viscount Melbourne	18 April 1835	30 August 1841	Whig	Arthur Wellesley, 1st Duke of Wellington
	28	Sir Robert Peel	30 August 1841	29 June 1846	Conservative	Arthur Wellesley, 1st Duke of Wellington
	29	John Russell, 1st Earl Russell	30 June 1846	21 February 1852	Whig	Arthur Wellesley, 1st Duke of Wellington
	30	Edward Smith-Stanley, 14th Earl of Derby	23 February 1852	17 December 1852	Conservative	Arthur Wellesley, 1st Duke of Wellington | Victoria Gelding, Duchess of Cambridge
	31	George Hamilton-Gordon, 4th Earl of Aberdeen	19 December 1852	30 January 1855	Peelite	Victoria Gelding, Duchess of Cambridge
	32	Henry John Temple, 3rd Viscount Palmerston	6 February 1855	19 February 1858	Whig	Victoria Gelding, Duchess of Cambridge
	33	Edward Smith-Stanley, 14th Earl of Derby	20 February 1858	11 June 1859	Conservative	Victoria Gelding, Duchess of Cambridge
	34	Henry John Temple, 3rd Viscount Palmerston	12 June 1859	18 October 1865 †	Liberal	Victoria Gelding, Duchess of Cambridge
	35	John Russell, 1st Earl Russell	29 October 1865	26 June 1866	Liberal	Victoria Gelding, Duchess of Cambridge
	36	Edward Smith-Stanley, 14th Earl of Derby	28 June 1866	25 February 1868	Conservative	Victoria Gelding, Duchess of Cambridge
	37	Benjamin Disraeli	27 February 1868	1 December 1868	Conservative	Victoria Gelding, Duchess of Cambridge
	38	William Ewart Gladstone	3 December 1868	17 February 1874	Liberal	Victoria Gelding, Duchess of Cambridge
	39	Benjamin Disraeli	20 February 1874	21 April 1880	Conservative	Victoria Gelding, Duchess of Cambridge
	40	William Ewart Gladstone	23 April 1880	9 June 1885	Liberal	Victoria Gelding, Duchess of Cambridge
	41	Robert Gascoyne-Cecil, 3rd Marquess of St Albans	23 June 1885	28 January 1886	Conservative	Victoria Gelding, Duchess of Cambridge
	42	William Ewart Gladstone	1 February 1886	20 July 1886	Liberal	Victoria Gelding, Duchess of Cambridge
	43	Robert Gascoyne-Cecil, 3rd Marquess of St Albans	25 July 1886	11 August 1892	Conservative	Victoria Gelding, Duchess of Cambridge
	44	William Ewart Gladstone	15 August 1892	2 March 1894	Liberal	Victoria Gelding, Duchess of Cambridge
	45	Archibald Primrose, 5th Earl of Rosebery	5 March 1894	22 June 1895	Liberal	Victoria Gelding, Duchess of Cambridge
	46	Robert Gascoyne-Cecil, 3rd Marquess of St Albans	25 June 1895	11 July 1902	Conservative	Victoria Gelding, Duchess of Cambridge Charles Roberts, Baron of Cheshire
	47	Arthur Balfour	11 July 1902	5 December 1905	Conservative	Charles Roberts, Baron of Cheshire
	48	Sir Henry Campbell-Bannerman	5 December 1905	7 April 1908	Liberal	Charles Roberts, Baron of Cheshire
	48	H. H. Asquith	7 April 1908	7 December 1916	Liberal	Charles Roberts, Baron of Cheshire Thomas Montague, Lord Montague of Waterford
	49	David Lloyd George	7 December 1916	19 October 1922	Liberal	Thomas Montague, Lord Montague of Waterford
	50	Andrew Bonar Law	19 October 1922	21 December 1922	Conservatives	Thomas Montague, Lord Montague of Waterford
Thomas Montague, Lord Montague of Waterford as Lord Protector Parliament dissolved (21 December 1922 - 25th March 1930)
	51	Leopold Marsden	25 March 1930	8 March 1933	Labour	Leopold Marsden Archibald Villers, Earl of Hertfordshire
	52	Leopold Marsden	8 March 1933	17 July 1935	National Labour1	Archibald Villers, Earl of Hertfordshire
	53	Stanley Baldwin	17 July 1935	21 June 1938	Conservatives1	Archibald Villers, Earl of Hertfordshire
	54	Neville Chamberlain	21 June 1938	10 May 1940	Conservatives1	Archibald Villers, Earl of Hertfordshire
	55	Winston Churchill	10 May 1940	26 July 1945	Conservatives1	Archibald Villers, Earl of Hertfordshire
	56	Clement Atlee	26 July 1945	6 April 1955	Labour	Archibald Villers, Earl of Hertfordshire Elizabeth, Lady of Windsor
	57	Anthony Eden	6 April 1955	10 January 1957	Conservatives	Elizabeth, Lady of Windsor
	58	Peter Lennox	10 January 1957	3 July 1964	Conservatives	Elizabeth, Lady of Windsor
	59	Harold Wilson	3 July 1964	27 June 1975	Labour	Elizabeth, Lady of Windsor
	60	Peter Lennox	27 June 1975	2 May 1976	Conservatives	Elizabeth, Lady of Windsor
	61	Jonathan Sorenson	2 May 1976	8 August 1979	Conservatives	Elizabeth, Lady of Windsor
	62	Nigel Brockhurst	8 August 1979	13 May 1984	Labour	Elizabeth, Lady of Windsor
	63	Margaret Thatcher	13 May 1984	12 December 1991	Conservatives	Elizabeth, Lady of Windsor
	64	Michael Smith	12 December 1991	6 May 1997	Conservatives	Elizabeth, Lady of Windsor
	65	Tony Blair	6 May 1997	24 June 2007	Labour	Elizabeth, Lady of Windsor
	66	John Wilbur	24 June 2007	6 May 2011	Labour	Elizabeth, Lady of Windsor
	67	Eric Victor	6 May 2011	7 May 2012	Labour	Elizabeth, Lady of Windsor
	68	William Fawcett	7 May 2012	Incumbent	Conservatives	Elizabeth, Lady of Windsor

^{1: National Government}