| Agnes Christina Lynch | Director | 12 Jul 2002 | 6 Sept 2005 | British | 59 years |
| Antony John Gara | Director | 25 Sept 2024 | 15 Apr 2025 | British | 52 years |
| Christina Bridget Ryan | Director | 18 May 2015 | 31 Mar 2025 | Irish | 66 years |
| Heather Gwendolyn Brierley | Director | 27 Mar 2002 | 29 Mar 2002 | British | 55 years |
| Heather Gwendolyn Brierley | Director | 6 Sept 2005 | 30 Mar 2009 | British | 55 years |
| Helen Louise Ashton | Director | 28 Mar 2002 | 12 Jul 2002 | British | 64 years |
| John Christopher Challis | Director | 6 Sept 2005 | 31 Mar 2011 | British | 73 years |
| Judith Sasse | Director | 30 Mar 2009 | 1 Jul 2010 | German | 51 years |
| Katherine Ann Walker | Director | 20 Aug 1998 | 12 Jul 2002 | British | 75 years |
| Kathryn Alice Zielinski | Director | 23 Sept 2019 | 30 Nov 2022 | British | 36 years |
| Louise Alison Clare Blackwell | Director | 16 May 2016 | 18 Jan 2018 | British | 44 years |
| Mark Philip Genikis | Director | 19 Nov 2001 | 22 Apr 2022 | British | 65 years |
| Michael Joseph Mohun | Director | 9 Feb 2018 | 4 Oct 2019 | Australian | 36 years |
| Philip Norman Allenby | Director | 1 Jul 2010 | 18 May 2015 | British | 66 years |
| Robert John Harwood | Director | 20 Aug 1998 | 8 May 2002 | British | 66 years |
| Stephen John Prior | Director | 20 Aug 1998 | 6 Sept 2005 | British | 73 years |