| Albert Larry Howard | Director | 22 Jun 1991 | 7 Apr 1988 | British | 77 years |
| Andrew Richard Hill | Director | 22 Jun 1991 | 31 Mar 1994 | British | 83 years |
| Bernadette Allinson | Secretary | 5 Oct 2007 | 15 Jun 2015 | Other | - |
| David Jack Leonard | Director | 18 Dec 2004 | 31 Aug 2006 | British | 65 years |
| David Jack Leonard | Secretary | 18 Dec 2004 | 31 Aug 2006 | British | - |
| Derek Shaw | Director | 30 Jun 2006 | 23 Apr 2007 | British | 70 years |
| Flemming Dalgaard | Director | 16 Apr 2008 | 17 Jan 2014 | Danish | 61 years |
| Frank Michael Marchant | Director | 22 Jun 1991 | 28 Mar 2002 | British | 91 years |
| Ganesh Raj Jayaraman | Director | 17 Jan 2014 | 16 Apr 2018 | Australian | 61 years |
| Ian Robert Shirreff | Director | 22 Jun 1991 | 28 Mar 2002 | British | 75 years |
| James Henry Tetley Beazley | Director | 25 Nov 1994 | 20 Oct 1998 | British | 68 years |
| James Henry Tetley Beazley | Secretary | 13 Jan 1992 | 8 Jan 1993 | British | - |
| James Henry Tetley Beazley | Secretary | 25 Nov 1994 | 20 Oct 1998 | British | - |
| John Alcock | Director | 22 Jun 1991 | 28 Mar 2002 | British | 84 years |
| John Clement Evans | Director | 22 Jun 1991 | 10 Jan 1992 | British | 93 years |
| John Mark Woollacott | Director | 23 Apr 2007 | 11 May 2010 | Australian | 54 years |
| Karlheinz Wilhelm Timmermann | Director | 22 Jun 1991 | 28 Mar 2002 | German | 86 years |
| Mantraraj Dipak Budhdev | Director | 25 Jun 2019 | 25 Nov 2021 | British | 39 years |
| Michael Ellis Moore | Director | 30 Jun 2006 | 15 Oct 2008 | American | 69 years |
| Mohammad Alhashimy | Secretary | 15 Jun 2015 | 19 Jul 2023 | - | - |
| Mohammad Ebrahim Ali Alhashimy | Director | 25 Jun 2019 | 19 Jul 2023 | British | 40 years |
| Nicholas Haydn Glyndwr Rees | Secretary | 31 Aug 2006 | 23 Apr 2007 | British | - |
| Nicholas John Monteith | Director | 28 Mar 2002 | 31 May 2002 | British | 72 years |
| Nicholas Lawrence Josephy | Director | 27 Jan 1993 | 30 Jan 1997 | British | 72 years |
| Nicholas Paul Loader | Secretary | 20 Oct 1998 | 28 Mar 2002 | British | - |
| Patrick William Walters | Director | 23 Apr 2007 | 16 Apr 2008 | British | 59 years |
| Peter Arthur Walker | Director | 31 May 2002 | 1 Nov 2013 | British | 72 years |
| Richard Michael Gradon | Director | 28 Mar 2002 | 30 Jun 2006 | British | 66 years |
| Sameer Dileep Damle | Secretary | 23 Apr 2007 | 5 Oct 2007 | British | - |
| Sandra Scott | Director | 28 Mar 2002 | 8 Dec 2004 | British | 60 years |
| Sandra Scott | Secretary | 28 Mar 2002 | 8 Dec 2004 | British | - |
| Sarmad Mehmood Qureshi | Director | 11 May 2010 | 25 Jun 2019 | British | 55 years |
| Stephen David Clinch | Director | 8 Mar 1994 | 28 Mar 2002 | British | 70 years |
| Stephen Michael Bishop | Director | 22 Jun 1991 | 25 Nov 1994 | British | 71 years |
| Stephen Michael Bishop | Secretary | 22 Jun 1991 | 13 Jan 1992 | British | - |
| Timothy Charles Harris | Director | 22 Jun 1991 | 18 Sept 1996 | British | 78 years |