| Charles William Burbridge | Director | 23 Jan 2017 | 6 Sept 2022 | British | 53 years |
| Christopher David Beese | Director | 14 May 2004 | 9 Apr 2009 | British | 71 years |
| Christopher Jonathan Charles Chapple | Director | 21 Sept 2011 | 30 Apr 2013 | British | 59 years |
| Claire Michelle Teague | Secretary | 14 May 2004 | 27 Jun 2008 | British | - |
| David Crumlish | Director | 1 May 2014 | 23 Feb 2015 | British | 65 years |
| David John Seaton | Director | 14 May 2004 | 26 Nov 2007 | British | 66 years |
| Edward William John Cowell | Director | 26 Apr 2012 | 1 May 2014 | British | 56 years |
| Frank Morgan Philip | Director | 9 Feb 2023 | 28 Feb 2025 | British | 67 years |
| Giles Russell Mcdonald Harrison | Director | 20 Mar 2015 | 5 Dec 2016 | British | 58 years |
| Jerome Hoffman | Director | 14 May 2004 | 14 Jul 2006 | American | 85 years |
| Julian Mark Hartley | Director | 15 Oct 2010 | 16 May 2014 | British | 65 years |
| Kevin Arthur Pye | Director | 20 Mar 2015 | 30 Jan 2017 | Australian | 67 years |
| Kevin Hallatt | Director | 20 Mar 2015 | 5 Apr 2017 | British | 56 years |
| Liam Mark Kelly | Director | 9 Sept 2020 | 23 Dec 2024 | British | 57 years |
| Matthew Edward Stanley Brabin | Director | 14 Jul 2006 | 13 Feb 2009 | British | 61 years |
| Matthew Gordon Philip Davies | Director | 2 Apr 2009 | 27 May 2010 | British | 52 years |
| Murray Evan Lauder | Director | 23 Feb 2017 | 19 Dec 2019 | New Zealander | 60 years |
| Nicholas Economakis | Director | 23 May 2013 | 20 Mar 2015 | British | 59 years |
| Nigel Anthony Billingham | Director | 13 Feb 2009 | 21 Sept 2011 | British | 70 years |
| Noel Albert Philp | Director | 14 May 2004 | 30 Jun 2009 | New Zealander | 77 years |
| Oliver Keck | Director | 31 Aug 2017 | 9 Sept 2020 | British | 45 years |
| Paul Robert Hellings | Director | 27 May 2010 | 26 Apr 2012 | English | 60 years |
| Timothy Holman Mitchell | Director | 3 Feb 2014 | 2 Oct 2014 | British | 62 years |
| Vaishali Jagdish Patel | Secretary | 30 Jul 2008 | 5 May 2021 | British | - |