| Patricia Josephine Ferguson | 12 May 1999 | 27 November 2001 |
| George Newlands Reid | 12 May 1999 | 7 May 2003 |
| Neil Murray Tosh | 29 November 2001 | 2 April 2007 |
| Patricia Godman | 7 May 2003 | 22 March 2011 |
| Elaine Agnes Smith | 11 May 2011 | 12 May 2016 |
| William John Graham Scott | 11 May 2011 | 12 May 2016 |
| Christine Grahame | 12 May 2016 | |
| Linda Fabiani | 12 May 2016 |