| Aderemi Ladega | Secretary | 11 Apr 2005 | 30 Jun 2010 | British | - |
| Alexandra Naomi Jensen | Director | 31 Aug 2020 | 1 Mar 2022 | British | 57 years |
| Andrea Margaret Thomas | Secretary | 1 Sept 1997 | 11 Apr 2005 | Other | - |
| Anna Cheng Catalano | Director | 1 Aug 1999 | 1 Dec 2001 | Us Citizen | 67 years |
| Brian Michael Puffer | Director | 1 Jan 2010 | 6 Feb 2018 | British,american | 57 years |
| Brian Peevor | Secretary | 9 Feb 1994 | 31 Aug 1997 | British | - |
| Christopher Kuangcheng Gerald Eng | Secretary | 23 Mar 2009 | 30 Jun 2010 | - | - |
| David Hugh Walton Payne | Director | 1 Jul 1993 | 1 Dec 1997 | British | 84 years |
| David Hulf | Director | 30 Dec 2001 | 30 Dec 2004 | British | 76 years |
| David Sinclair Mace | Director | 27 Jul 1992 | 30 Nov 1996 | British | 89 years |
| Donald Price | Director | 30 Jan 1992 | 16 Apr 1994 | British | 73 years |
| Frederik Tshamanomohau Phaswana | Director | 1 Jan 1997 | 30 Dec 1998 | South African | 82 years |
| Gillian Elizabeth Young | Secretary | 17 Feb 1992 | 9 Feb 1994 | British | - |
| Guy Jan Julia Moeyens | Director | 23 Apr 2015 | 31 Aug 2020 | Belgian | 61 years |
| Iain Fraser Macdonald | Director | 30 Dec 2004 | 31 Dec 2009 | British | 69 years |
| James Edward Glenholme | Director | 1 Mar 2022 | 15 Feb 2024 | British | 52 years |
| Jean Baptiste Michel Renard | Director | 1 Feb 2003 | 1 Aug 2006 | French | 65 years |
| John Malcolm Travers Greensmith | Director | 1 Jan 1993 | 31 Dec 1996 | British,south African | 77 years |
| Leslie Atkinson | Director | 30 Jan 1992 | 1 Jul 1993 | British | 82 years |
| Mark Louis Noetzel | Director | 1 Dec 2001 | 1 Feb 2003 | American | 69 years |
| Mehmet Tufan Erginbilgic | Director | 2 Apr 2009 | 23 Apr 2015 | Turkish | 67 years |
| Paul Trevor Davis | Director | 1 Dec 1996 | 1 Oct 1998 | British | 79 years |
| Ralph Charles Alexander | Director | 8 Dec 1997 | 1 Aug 1999 | American | 71 years |
| Roger Alan Webber | Director | 16 Apr 1993 | 16 Apr 1994 | British | 91 years |
| Ross John Pillari | Director | 31 Dec 1998 | 30 Dec 2001 | Us Citizen | 76 years |
| Stephen Martin Beesley | Director | 31 Dec 1996 | 1 Jan 2008 | British | 74 years |
| Thierry Jose Henri Rondeau | Director | 26 Sept 2018 | 24 Jun 2019 | French | 67 years |
| Tony Fountain | Director | 1 Aug 2006 | 2 Apr 2009 | British | 66 years |
| Yasin Stanley Ali | Secretary | 19 Feb 2001 | 30 Jun 2010 | - | - |