| Alfred Raymond Weingartner | Director | 21 Sept 1992 | 10 Mar 1993 | American | 83 years |
| Andrew Mason Mills | Director | 31 Aug 2021 | 29 Mar 2023 | British | 57 years |
| Anthony Caputo | Director | 16 Mar 2004 | 17 Oct 2006 | Usa | 85 years |
| Carole Argo | Director | 16 Mar 2004 | 17 Oct 2006 | Usa | 65 years |
| Chris Steven Fedde | Director | 4 May 2007 | 12 Dec 2012 | American | 75 years |
| Christen Madsen-oesterbye | Director | 17 Oct 2006 | 28 Sept 2007 | Danish | 59 years |
| Christopher Winston Smith | Secretary | 21 Sept 1992 | 18 Feb 1993 | British | - |
| Gary Alfred Clark | Director | 25 Aug 2005 | 23 Apr 2013 | British | 72 years |
| Gary Alfred Clark | Director | 1 Oct 2013 | 31 Mar 2020 | British | 72 years |
| John Wilbert Frederick | Director | 17 Oct 2006 | 4 May 2007 | American | 63 years |
| Kevin Lonn Hicks | Secretary | 16 Mar 2004 | 23 Apr 2013 | American | - |
| Kevin Lonn Hicks | Secretary | 5 Feb 2014 | 10 Mar 2015 | - | - |
| Lawrence David Hansen | Director | 13 Dec 2012 | 11 Jun 2014 | Usa And Canadian | 62 years |
| Olivier Candau | Secretary | 3 Dec 2001 | 16 Mar 2004 | French | - |
| Patrick Fevery | Director | 23 Dec 1992 | 16 Mar 2004 | Usa | 71 years |
| Prakash Panjwani | Director | 23 Jun 2014 | 10 Apr 2015 | Usa | 57 years |
| Raymond Lewis | Director | 21 Sept 1992 | 31 Dec 1993 | British | 78 years |
| Robert Geoffrey Gower-smith | Director | 21 Sept 1992 | 23 Dec 1992 | British | 80 years |
| Roozbeh Babak Barkhordari | Director | 1 Oct 2007 | 23 Apr 2013 | American | 55 years |
| Thomas Watson | Secretary | 18 Feb 1993 | 3 Dec 2001 | British | - |
| Valerie Lyon | Director | 25 Jun 2015 | 31 Aug 2021 | British | 61 years |
| Walter William Straub | Director | 21 Sept 1992 | 16 Mar 2004 | American | 83 years |
| Walter William Straub | Director | 17 Oct 2006 | 4 May 2007 | American | 83 years |