| Alexander Daniel Jeffrey | Director | 16 Jul 2012 | 23 Mar 2018 | British | 59 years |
| Anthony John Ashplant | Director | 22 Jul 2013 | 23 Mar 2016 | British | 71 years |
| Anthony Michael Brown | Director | 18 Feb 2014 | 30 Jun 2025 | British | 58 years |
| Benjamin Patrick Freeman | Director | 1 Jul 2002 | 29 Dec 2006 | British | 65 years |
| Chiang Ling Ng | Director | 1 Apr 2016 | 1 Apr 2021 | Singaporean | 52 years |
| Christopher John Andrews | Director | 28 Jan 2013 | 31 Aug 2018 | Australian | 66 years |
| Christopher Nutten | Director | 23 May 2000 | 31 Mar 2009 | British | 68 years |
| David George Green | Director | 4 Oct 1999 | 23 May 2000 | British | 75 years |
| Derek James Forbes | Director | 16 Jul 2012 | 25 Oct 2014 | British | 53 years |
| Edward Louis Rosengarten | Director | 20 Jan 2009 | 10 Aug 2010 | British | 57 years |
| Erica Rachel Dudley | Director | 1 Apr 2019 | 28 Feb 2020 | British | 44 years |
| Fiona Jane Molloy | Secretary | 9 Apr 2001 | 13 Jan 2006 | British | - |
| Jing Dong Lai | Director | 1 Apr 2021 | 29 Nov 2022 | Singaporean | 49 years |
| John Liberty Cartwright | Director | 10 May 2005 | 31 Dec 2008 | British | 72 years |
| John Michael Wythe | Director | 10 May 2005 | 31 Dec 2010 | British | 69 years |
| Jonathan Mark Brewis Daniels | Director | 1 Apr 2019 | 3 Mar 2020 | British | 62 years |
| Jonathan Peter Mcclelland | Director | 21 Feb 2017 | 7 Sept 2018 | British | 62 years |
| Jonathan Peter Nibblet | Director | 20 Jan 2009 | 30 Jun 2012 | British | 58 years |
| Jose Luis Pellicer Gallardo | Director | 29 Jul 2019 | 29 Nov 2022 | Spanish | 51 years |
| Kerryn Lynn Macdonald | Secretary | 30 Apr 2004 | 9 Mar 2005 | British | - |
| Malcolm Ashley Smith | Director | 23 Apr 2009 | 31 Mar 2013 | British | 63 years |
| Marc Gregor Reijnen | Director | 1 Apr 2021 | 29 Nov 2022 | Dutch | 61 years |
| Martin Lewis | Director | 20 Jan 2009 | 13 Jun 2016 | British | 69 years |
| Martin Richard Moore | Director | 23 May 2000 | 30 Jun 2013 | British | 69 years |
| Michael George Alexander Mclintock | Director | 7 Jul 2003 | 19 Apr 2006 | British | 64 years |
| Nicholas Henry Croom Thompson | Director | 23 May 2000 | 30 Apr 2004 | British | 76 years |
| Nicholas Martin Brown | Director | 2 Feb 2015 | 23 May 2019 | British | 59 years |
| Nicholas Robert Mcmorran | Director | 1 Apr 2019 | 29 Nov 2022 | British | 51 years |
| Paul Francis Mcnamara | Director | 23 May 2000 | 26 Sept 2012 | British | 71 years |
| Peter Richard Best | Director | 10 May 2005 | 30 Jun 2014 | British | 66 years |
| Robert Walker | Secretary | 4 Oct 1999 | 26 Jun 2000 | British | - |
| Sanjeev Sharma | Director | 9 Apr 2001 | 29 Nov 2022 | British | 62 years |
| Scott Ronald Girard | Director | 30 Jan 2012 | 1 Apr 2016 | Australian | 52 years |
| Simon Humphrey Westland Pilcher | Director | 23 Mar 2018 | 1 Apr 2019 | British | 59 years |
| Susan Diane Morgan | Secretary | 26 Jun 2000 | 9 Apr 2001 | British | - |
| William Nicoll | Director | 24 Feb 2020 | 31 Mar 2023 | British | 56 years |