Robert Walpole Spencer Compton Henry Pelham Thomas Pelham-Holles William Cavendish Thomas Pelham-Holles John Stuart George Grenville Charles Watson-Wentworth William Pitt Augustus FitzRoy Frederick North Charles Watson-Wentworth William Petty William Cavendish-Bentinck William Pitt Henry Addington William Pitt William Cavendish-Bentinck Spencer Perceval Robert Jenkinson George Canning Frederick John Robinson Arthur Wellesley Charles Grey William Lamb Arthur Wellesley Robert Peel William Lamb Robert Peel John Russell Edward Smith-Stanley George Hamilton-Gordon Henry John Temple Edward Smith-Stanley Henry John Temple John Russell Edward Smith-Stanley Benjamin Disraeli William Ewart Gladstone Benjamin Disraeli William Ewart Gladstone Robert Gascoyne-Cecil William Ewart Gladstone Robert Gascoyne-Cecil William Ewart Gladstone Archibald Primrose Robert Gascoyne-Cecil Arthur Balfour Henry Campbell-Bannerman H. H. Asquith David Lloyd George Bonar Law Stanley Baldwin Ramsay MacDonald Stanley Baldwin Ramsay MacDonald Stanley Baldwin Neville Chamberlain Winston Churchill Clement Attlee Winston Churchill Anthony Eden Harold Macmillan Alec Douglas-Home Harold Wilson Edward Heath Harold Wilson James Callaghan Margaret Thatcher John Major Tony Blair Gordon Brown David Cameron Theresa May Boris Johnson