| Adrian John Mardell | Director | 1 Jun 2019 | 30 Jun 2023 | British | 65 years |
| Amanda Jane Beaton | Secretary | 13 Jul 2012 | 1 Dec 2024 | - | - |
| Andre Leonard Burns | Director | 1 Oct 1997 | 30 Jun 2000 | British | 74 years |
| Andre Leonard Burns | Director | 31 May 2002 | 30 Sept 2003 | British | 74 years |
| Andrew Gawthorpe | Director | 18 Mar 2010 | 31 Jul 2011 | British | 55 years |
| Andrew Thomas Armitage | Director | 23 Apr 1999 | 30 Jun 2000 | British | 70 years |
| Andrew Thomas Armitage | Secretary | 11 Jul 1992 | 30 Jun 2000 | British | - |
| Barry James Carsley | Director | 6 Oct 2010 | 1 Apr 2013 | British | 60 years |
| Brian Gordon Purves | Director | 11 Jul 1992 | 26 Feb 1996 | British | 71 years |
| Charles Gilbert Vacy Ash | Secretary | 4 Dec 2002 | 8 Feb 2006 | British | - |
| Clive Charles Page | Secretary | 30 Jun 2000 | 2 Jun 2008 | British | - |
| David Miles Smith | Director | 30 Jun 2000 | 22 Nov 2005 | British | 65 years |
| David Miles Smith | Director | 7 Mar 2008 | 8 Feb 2010 | British | 65 years |
| Frank Lazzaro | Director | 22 Nov 2005 | 7 Mar 2008 | Australian | 66 years |
| Geoffrey Paul Polites | Director | 16 Aug 2005 | 20 Apr 2008 | Australian | 79 years |
| Harry Anthony Rose | Director | 11 Jul 1992 | 31 Mar 1999 | British | 86 years |
| Helen Mary Mclintock | Secretary | 8 Feb 2006 | 27 Nov 2006 | British | - |
| Helen Mary Mclintock | Secretary | 30 May 2008 | 15 Aug 2008 | British | - |
| Helen Mary Mclintock | Secretary | 6 Oct 2010 | 25 Feb 2015 | British | - |
| Howard Neil Reilly | Director | 11 Jul 1992 | 30 Sept 1999 | British | 70 years |
| John Kennedy Russell | Director | 11 Jul 1992 | 31 May 1996 | British | 77 years |
| John Stirling Edwards | Director | 15 Jun 2004 | 8 Feb 2006 | British | 64 years |
| Jonathan Edward Osgood | Secretary | 13 Jul 2005 | 30 Jun 2008 | British | - |
| Joseph Greenwell | Director | 2 Dec 2003 | 16 Aug 2005 | British | 75 years |
| Kathryn Szczepanik Lamping | Secretary | 15 Aug 2000 | 4 Dec 2002 | British | - |
| Keith John Benjamin | Director | 1 Apr 2013 | 22 Sept 2022 | British | 70 years |
| Kenneth David Matheson Gregor | Director | 10 Jun 2008 | 1 Jun 2019 | British | 59 years |
| Lyle Alexander Watters | Director | 28 May 2003 | 22 Nov 2005 | British | 61 years |
| Matthew Gordon Robert Taylor | Director | 30 Jun 2000 | 12 May 2006 | British | 66 years |
| Michael Charles Stewart Edwards | Secretary | 4 Dec 2002 | 28 Oct 2011 | Other | - |
| Michael Francis Marecki | Secretary | 21 Sept 2000 | 30 Jun 2005 | British | - |
| Peter Joseph Sherry Jr | Secretary | 15 Aug 2000 | 4 Dec 2002 | American | - |
| Philip Colin Popham | Director | 8 Feb 2006 | 1 Apr 2013 | British | 61 years |
| Ralf Dieter Speth | Director | 18 Mar 2010 | 1 Apr 2013 | German | 71 years |
| Reinhard Kuenstler | Director | 26 Feb 2004 | 1 Feb 2007 | German | 77 years |
| Richard Charles Osborne Shore | Director | 22 Nov 2005 | 6 Oct 2010 | British | 62 years |
| Richard Martin Alistair Bielby | Secretary | 21 Aug 2007 | 21 Sept 2018 | Other | - |
| Robert Alan Dover | Director | 30 Jun 2000 | 2 Dec 2003 | British | 81 years |
| Stephen John Perrin | Director | 31 May 2002 | 26 Feb 2004 | British | 79 years |
| Steven Richard Cootes | Director | 7 Feb 2007 | 18 Mar 2010 | British | 63 years |
| Susan Lesley Pearson | Secretary | 20 Sept 2000 | 31 Mar 2019 | Other | - |
| Thomas Finlayson Grant Purves | Director | 1 Oct 1997 | 30 Apr 1999 | British | 78 years |
| Timothy Dale Tucker | Director | 31 May 2002 | 15 Jun 2004 | American | 70 years |