| Alan Detheridge | Director | 1 Aug 1994 | 13 Feb 1996 | British | 79 years |
| Alan Goldsmith | Director | 29 Oct 1992 | 18 Jan 1993 | British | 78 years |
| Antony Mcvicker Patterson | Director | 13 Feb 1996 | 2 Apr 1998 | British | 74 years |
| Christiaan Lucas Hooijkaas | Director | 8 Oct 1996 | 19 Apr 2001 | Netherlands | 72 years |
| David Norman Green | Director | 1 Dec 1993 | 27 Sept 1996 | British | 78 years |
| Diane June Penfold | Secretary | 29 Oct 1992 | 30 Sept 1994 | British | - |
| Dipa Raivadera | Secretary | 3 Oct 1994 | 26 Nov 1997 | British | - |
| Francoise Mireille Helene Bonge | Director | 13 Feb 1996 | 22 Jan 1998 | Belgian | 67 years |
| Guy Willis Cowley | Director | 1 Apr 1993 | 9 Oct 1996 | British | 77 years |
| John James Barry | Director | 21 Sept 1994 | 13 Feb 1996 | British | 67 years |
| Karin Jacqueline Hawkins | Director | 30 Sept 2010 | 27 Jan 2012 | British | 65 years |
| Luiz Eneas Fortes | Director | 29 Oct 1992 | 1 Apr 1993 | Brazilian | 79 years |
| Mario Rosito Filho | Director | 6 Apr 1998 | 10 Feb 2000 | Brazilian | 76 years |
| Michael John Ashworth | Director | 24 Jan 2012 | 15 Aug 2019 | British | 65 years |
| Nicholas Antony Norman Stuart Robertson | Director | 13 Feb 1996 | 29 Mar 2000 | British | 76 years |
| Peter Ankers | Director | 29 Oct 1992 | 30 Nov 1993 | British | 81 years |
| Rodney Taunton Pearse | Director | 18 Jan 1993 | 1 Aug 1994 | Australian | 80 years |
| Timothy O'brien | Director | 14 May 1999 | 9 Jun 2000 | British | 74 years |
| Trevor Hobson | Director | 4 Apr 2000 | 28 Sept 2005 | British | 76 years |
| Wulf Hinrich Bernotat | Director | 29 Oct 1992 | 21 Sept 1994 | German | 78 years |