| Andrew Robert Farmer | Director | 1 Aug 2015 | 14 Sept 2016 | British | 57 years |
| Andrew Robert Farmer | Director | 3 Jul 2017 | 1 Jul 2018 | British | 57 years |
| David Andrew Ridley | Director | 25 Jan 2007 | 7 May 2008 | Australian | 61 years |
| David Anthony Venus | Nominee Director | 23 Mar 1995 | 1 May 1995 | British | 75 years |
| David Murphy | Secretary | 1 Nov 2006 | 19 Dec 2007 | British | - |
| David William Walker | Secretary | 1 May 1995 | 31 Jul 1998 | British | - |
| Douglas William Armour | Nominee Secretary | 23 Mar 1995 | 1 May 1995 | British | - |
| Euan William Mitchell | Secretary | 1 Jul 2018 | 30 Sept 2024 | - | - |
| Geoffrey Lloyd Baldwin | Director | 1 May 1995 | 1 Aug 2000 | British | 86 years |
| Graham Hillier Setterfield | Director | 1 Nov 2006 | 19 Dec 2007 | British | 80 years |
| Huw Iolo Morris | Director | 1 Jul 2018 | 30 May 2023 | British | 61 years |
| James Gerard Hallam | Director | 28 Feb 2005 | 4 Jul 2005 | Australian | 65 years |
| Jean-etienne Leroux | Director | 15 Mar 2011 | 21 Dec 2012 | Canadian | 48 years |
| Joanne Elizabeth Stimpson | Director | 4 Jul 2005 | 1 Nov 2006 | British | 64 years |
| Joanne Elizabeth Stimpson | Director | 19 Dec 2007 | 16 Mar 2011 | British | 64 years |
| Joanne Elizabeth Stimpson | Director | 20 Dec 2012 | 31 Jul 2015 | British | 64 years |
| Joanne Elizabeth Stimpson | Secretary | 11 Oct 2004 | 1 Nov 2006 | British | - |
| Joanne Elizabeth Stimpson | Secretary | 19 Dec 2007 | 31 Jul 2015 | British | - |
| Kanishk Bhatia | Director | 15 Mar 2011 | 3 Jan 2013 | Indian | 44 years |
| Marissa Ann Szczepaniak | Director | 15 Sept 2016 | 1 Jul 2018 | British | 46 years |
| Mark James Gomar | Director | 22 Jan 2004 | 28 Feb 2005 | British | 67 years |
| Neil Mcdougall | Director | 7 Jul 2003 | 22 Jan 2004 | British | 64 years |
| Nicholas Truilet | Secretary | 1 Aug 2015 | 1 Jul 2018 | - | - |
| Oliver Jan Schubert | Director | 28 Apr 2017 | 1 Jul 2018 | Austrian | 54 years |
| Olivier Georges Xavier Fortin | Director | 15 Sept 2016 | 8 Feb 2017 | French | 52 years |
| Paul Andrew Rich | Director | 3 Jul 2017 | 1 Jul 2018 | British | 70 years |
| Paul Butler | Director | 4 Jul 2005 | 1 Nov 2006 | British | 65 years |
| Paul Butler | Director | 19 Dec 2007 | 16 Mar 2011 | British | 65 years |
| Paul Butler | Director | 20 Dec 2012 | 14 Sept 2016 | British | 65 years |
| Paul Butler | Director | 3 Jul 2017 | 1 Jul 2018 | British | 65 years |
| Paul Evan-cook | Director | 1 Aug 2000 | 7 Oct 2003 | British | 82 years |
| Paul Evan-cook | Secretary | 1 Aug 1998 | 17 Nov 2003 | British | - |
| Paul Seeley | Director | 1 Nov 2006 | 19 Dec 2007 | British | 72 years |
| Peter Nolan Taylor | Director | 28 Feb 2005 | 4 Jul 2005 | Australian | 54 years |
| Richard Ian Leigh | Director | 22 Jan 2004 | 11 Oct 2004 | British | 60 years |
| Richard Ian Leigh | Secretary | 13 Feb 2004 | 11 Oct 2004 | British | - |
| Robert Charles Atwood | Director | 1 May 1995 | 26 Sept 2003 | British | 84 years |
| Tanya Louise Sephton | Director | 3 Jul 2017 | 1 Jul 2018 | British | 48 years |
| Valeria Rosati | Director | 15 Mar 2011 | 21 Dec 2012 | Italian | 51 years |