| David Anthony Venus | Secretary | 2 Apr 1994 | 1 Aug 2007 | British | - |
| David James Benwell Taylor-smith | Director | 26 Nov 2007 | 29 Sept 2012 | British | 65 years |
| David Mel Zuydam | Director | 28 Feb 2014 | 16 May 2014 | British | 65 years |
| Grahame Reginald Gibson | Director | 12 Jul 2000 | 18 May 2004 | British | 73 years |
| Grahame Reginald Gibson | Director | 20 Apr 2005 | 23 Nov 2007 | British | 73 years |
| Hans Olaf Bennetzen | Director | 18 May 2004 | 1 Sept 2004 | Danish | 79 years |
| James Darnton | Director | 26 Nov 2007 | 7 Mar 2011 | British | 61 years |
| Julian Mark Hartley | Director | 16 May 2014 | 15 Sept 2020 | British | 65 years |
| Martin Mcgowan Scanlon | Director | 1 Sept 2004 | 18 Apr 2005 | British | 68 years |
| Nathan Richards | Director | 1 Oct 2012 | 28 Feb 2014 | British | 57 years |
| Nathan Richards | Secretary | 1 Aug 2007 | 12 Nov 2008 | British | - |
| Nicholas Peter Buckles | Director | 29 Jun 2005 | 23 Nov 2007 | British | 65 years |
| Nils Jorgen Philip-sorensen | Director | N/A | 12 Jul 2000 | Swedish | 88 years |
| Paul Davitt | Director | 1 Sept 2004 | 29 Jun 2005 | Irish | 52 years |
| Paul Leslie Condon | Director | 29 Jun 2005 | 23 Nov 2007 | British | 79 years |
| Peter John Enzer | Director | 20 Apr 2005 | 26 Jun 2006 | British | 77 years |
| Peter Vernon Black | Director | 12 Jul 2000 | 1 Sept 2004 | British | 66 years |
| Raya Bartykova | Director | 29 Jun 2005 | 23 Nov 2007 | Kazakh | 64 years |
| Robert Hartslief | Director | 26 Jun 2006 | 18 Jul 2006 | South Africa | 70 years |
| Robert Logan Mcdonald | Director | 1 Sept 2004 | 23 Nov 2007 | British | 63 years |
| Roderick Alexander Cordy-simpson | Director | 29 Jun 2005 | 23 Nov 2007 | English | 82 years |
| Ronald Arthur Ramsbottom | Director | 1 Oct 1992 | 2 Apr 1994 | British | 93 years |
| Ronald Arthur Ramsbottom | Secretary | N/A | 2 Apr 1994 | British | - |
| Shaun Anthony Webber | Director | 1 Jan 2007 | 17 Nov 2008 | British | 59 years |
| Stuart Edward Curl | Director | 7 Mar 2011 | 28 Feb 2014 | British | 65 years |
| Timothy Stephen Oddy | Director | N/A | 1 Oct 1992 | British | 86 years |
| Vaishali Jagdish Patel | Secretary | 12 Nov 2008 | 5 May 2021 | British | - |
| Vaishali Jagdish Patel | Director | 28 Feb 2014 | 5 May 2021 | British | 53 years |