MPs
- Mr James Clyde December 14, 1918 - March 25, 1920
- Sir Patrick Ford April 9, 1920 - December 6, 1923
- Mr Peter Raffan December 6, 1923 - October 29, 1924
- Sir Patrick Ford October 29, 1924 - November 14, 1935
- Sir Alexander Erskine-Hill November 14, 1935 - July 5, 1945
- Mr Eustace Willis July 5, 1945 - February 23, 1950
- Mr James Clyde February 23, 1950 - December 31, 1954
- Mr William Milligan January 27, 1955 - April 30, 1960
- Earl of Dalkeith May 19, 1960 - October 4, 1973
- Mr Alexander Fletcher November 8, 1973 - June 9, 1983