Dr Lynda Margaret Clark | 11 June 2001 | |
Rt Hon James Robert Wallace, Baron Wallace of Tankerness | May 2010 | |
Richard Sanderson Keen, Baron Keen of Elie | 29 May 2015 | 16 September 2020 |
Keith Douglas Stewart, Baron Stewart of Dirleton | 15 October 2020 | |
Catherine Anne Smith, Baroness Smith of Cluny | 29 August 2024 |