Leader of the Opposition in the House of Lords

Name 	EnteredOffice	Left Office 	Party 	Notes
The Lord Grenville 	March 1807 	1817 	Whig 	
The Earl Grey 	1817 	1824 	Whig 	
The Marquess of Lansdowne 	1824 	April 1827 	Whig 	
The Duke of Wellington 	April 1827 	January 1828 	Tory 	
The Marquess of Lansdowne 	January 1828 	November 1830	Whig 	
The Duke of Wellington 	November 1830	November 1834	Tory 	
The Viscount Melbourne 	November 1834	April 1835 	Whig 	
The Duke of Wellington 	April 1835 	August 1841 	Conservative	
The Viscount Melbourne 	August 1841 	October 1842 	Liberal 	
The Marquess of Lansdowne 	October 1842 	June 1846 	Liberal 	
The Lord Stanley,from June 1851, The Earl of Derby 	June 1846 	February 1852	Conservative	
The Marquess of Lansdowne 	February 1852	December 1852	Liberal 	
The Earl of Derby 	December 1852	February 1858	Conservative	
The Earl Granville 	February 1858	June 1859 	Liberal 	
The Earl of Derby 	June 1859 	June 1866 	Conservative	
The Earl Russell 	June 1866 	1868 	Liberal 	
The Earl Granville 	1868 	December 1868	Liberal 	
The Earl of Malmesbury 	December 1868	February 1869	Conservative	
The Lord Cairns 	February 1869	February 1870	Conservative	
The Duke of Richmond 	February 1870	February 1874	Conservative	
The Earl Granville 	February 1874	April 1880 	Liberal 	
The Earl of Beaconsfield 	April 1880 	May 1881 	Conservative	
The Marquess of Salisbury 	May 1881 	June 1885 	Conservative	
The Earl Granville 	June 1885 	February 1886	Liberal 	
The Marquess of Salisbury 	February 1886	July 1886 	Conservative	
The Earl Granville 	July 1886 	April 1891 	Liberal 	
The Earl of Kimberley 	April 1891 	August 1892 	Liberal 	
The Marquess of Salisbury 	August 1892 	June 1895 	Conservative	
The Earl of Rosebery 	June 1895 	January 1897 	Liberal 	
The Earl of Kimberley 	January 1897 	April 1902 	Liberal 	
The Earl Spencer 	April 1902 	October 1905 	Liberal 	
The Marquess of Ripon 	October 1905 	December 1905	Liberal 	
The Marquess of Lansdowne 	December 1905	May 1915 	Unionist 	
The Marquess of Crewe 	December 1916	January 1924 	Liberal 	
The Marquess Curzon of Kedleston 	January 1924 	November 1924	Conservative	
The Viscount Haldane 	November 1924	August 1928 	Labour 	
The Lord Parmoor 	August 1928 	June 1929 	Labour 	
The Marquess of Salisbury 	June 1929 	1930 	Conservative	
The Viscount Hailsham 	1930 	August 1931 	Conservative	
The Lord Parmoor 	August 1931 	November 1931	Labour 	
The Lord Ponsonby of Shulbrede 	November 1931	October 1935 	Labour 	
The Lord Snell 	October 1935 	May 1940 	Labour 	
The Lord Addison 	May 1940 	July 1945 	Labour 	
Viscount Cranborne,the Marquess of Salisbury from 4 April 1947 	July 1945 	October 1951 	Conservative	
The Viscount Addison 	October 1951 	December 1951	Labour 	
The Earl Jowitt 	January 1952 	December 1955	Labour 	
The Viscount Alexander of Hillsborough, from 1963 the Earl Alexander of Hillsborough	December 1955	October 1964 	Labour 	
The Lord Carrington 	October 1964 	June 1970 	Conservative	
The Lord Shackleton 	June 1970 	March 1974 	Labour 	
The Lord Carrington 	March 1974 	May 1979 	Conservative	
The Lord Peart 	May 1979 	1982 	Labour 	
The Lord Cledwyn of Penrhos 	1982 	July 1992 	Labour 	
The Lord Richard 	July 1992 	May 1997 	Labour 	
Viscount Cranborne 	May 1997 	December 1998	Conservative	
The Lord Strathclyde 	December 1998	May 2010 	Conservative	
The Baroness Royall of Blaisdon 	May 2010 	present 	Labour