| Alan George Burns | Director | 3 Dec 2012 | 3 Apr 2019 | British | 50 years |
| Ashley Alexander Grist | Director | 9 Sept 2009 | 20 Oct 2010 | British | 60 years |
| Christopher Lindsay Christian | Director | 13 Oct 1995 | 29 Sept 1997 | British | 75 years |
| Dawn Elizabeth Knight | Secretary | 28 Oct 1993 | 28 Apr 1995 | British | - |
| Derek Davies | Director | 16 Aug 2010 | 14 Dec 2012 | British | 62 years |
| Edward John Bowler | Director | 29 Nov 1992 | 30 Mar 1995 | British | 88 years |
| Gisela Maria Aloisia Gledhill | Director | 29 Nov 1992 | 30 Jun 1995 | Austrian | 81 years |
| Gisela Maria Aloisia Gledhill | Secretary | 29 Nov 1992 | 28 Oct 1993 | Austrian | - |
| James Borger | Director | 25 Feb 2019 | 30 Oct 2023 | American | 62 years |
| Jonathan Laurence Patrick Hyde | Director | 12 Jun 1995 | 13 Oct 1995 | British | 72 years |
| Jonathan Mark Bolton | Director | 12 Jun 1995 | 29 Sept 1997 | British | 59 years |
| Jonathan Mark Bolton | Secretary | 28 Apr 1995 | 29 Sept 1997 | British | - |
| Justin Southworth Court | Director | 28 Oct 1993 | 30 Jun 1995 | British | 76 years |
| Lorraine Anne Day | Secretary | 8 May 1998 | 16 Jan 2006 | British | - |
| Oleg Dubianskij | Director | 31 Jan 2017 | 13 Feb 2019 | Lithuanian | 53 years |
| Philip Graham Watt | Secretary | 29 Sept 1997 | 8 May 1998 | British | - |
| Roger Graham Whittaker | Director | 29 Nov 1992 | 28 Oct 1993 | British | 82 years |