| Adam Charles Little | Director | 14 Oct 2004 | 1 Aug 2007 | British | 75 years |
| Aderemi Ladega | Secretary | 11 Apr 2005 | 30 Jun 2010 | British | - |
| Andrea Margaret Thomas | Secretary | 1 Sept 1997 | 11 Apr 2005 | Other | - |
| Brian Michael Puffer | Director | 8 Mar 2010 | 6 Feb 2018 | British,american | 57 years |
| Brian Peevor | Secretary | 1 Apr 1994 | 31 Aug 1997 | British | - |
| Catherine Ann Mccann | Director | 1 Feb 2022 | 1 Jun 2023 | British | 60 years |
| Christopher Kuangcheng Gerald Eng | Secretary | 23 Mar 2009 | 30 Jun 2010 | - | - |
| Clive Warren Chambers | Director | 5 Nov 1993 | 30 Apr 1998 | British | 86 years |
| Douglas Patrick Chapman | Director | 1 Jan 1993 | 31 Mar 1994 | British | 76 years |
| Douglas Patrick Chapman | Director | 23 May 1997 | 1 Feb 2003 | British | 76 years |
| Francis William Michael Starkie | Director | 1 Apr 1994 | 30 Sept 2009 | British | 77 years |
| James Grant Nemeth | Director | 1 Feb 2003 | 3 Aug 2005 | Us Citizen | 69 years |
| Jan Clayton Lyons | Director | 1 Jan 2017 | 6 Apr 2021 | American | 61 years |
| John Harold Bartlett | Director | 10 Oct 2011 | 1 Jan 2016 | British | 73 years |
| Julian John Watts | Director | 21 Dec 1994 | 23 May 1997 | New Zealand | 87 years |
| Julian John Watts | Secretary | 1 Jan 1993 | 31 Mar 1994 | New Zealand | - |
| Katherine Anne Thomson | Director | 1 Jan 2016 | 1 Feb 2022 | British | 58 years |
| Paul Fitzmaurice | Director | 1 Jan 1993 | 19 Apr 1993 | British | 81 years |
| Richard Charles Grayson | Director | 1 Jan 1993 | 21 Dec 1994 | British | 85 years |
| Robert Carl Fearnley | Director | 1 Aug 2007 | 10 Oct 2011 | British | 63 years |
| Roger Christopher Harrington | Director | 1 Oct 2009 | 8 Mar 2010 | British | 60 years |
| Shiva Pezeshki Mcmahon | Director | 3 Oct 2018 | 31 May 2019 | British | 58 years |
| Yasin Stanley Ali | Secretary | 19 Feb 2001 | 30 Jun 2010 | - | - |
