| Bernard George Whiddon Smith | Director | 1 Jan 2004 | 1 Jan 2005 | British | 80 years |
| Celine Arlette Virginie Barroche | Secretary | 8 Nov 2010 | 31 Jan 2016 | - | - |
| David Anthony Venus | Secretary | 1 Jul 2000 | 10 Jan 2007 | British | - |
| David James Beaton | Director | 1 Jan 2005 | 10 Jan 2007 | British | 74 years |
| Grahame Reginald Gibson | Director | 12 Jul 2000 | 1 Jan 2004 | British | 73 years |
| Hans Olaf Bennetzen | Director | 1 Jan 2005 | 10 Jan 2007 | Danish | 79 years |
| Himanshu Haridas Raja | Director | 28 Feb 2014 | 1 Oct 2016 | British | 61 years |
| Nils Jorgen Philip-sorensen | Director | 3 Aug 1991 | 12 Jul 2000 | Swedish | 88 years |
| Peter Vernon Black | Director | 1 Jan 2004 | 1 Sept 2004 | British | 66 years |
| Stephen Edward Lyell | Secretary | 10 Jan 2007 | 1 Nov 2010 | Other | - |
| Trevor Leslie Dighton | Director | 10 Jan 2007 | 31 Jul 2013 | British | 77 years |
| William George Gregory | Director | 17 Nov 1993 | 1 Jul 2000 | British | 100 years |
| William George Gregory | Secretary | 3 Aug 1991 | 1 Jul 2000 | British | - |