| Alan Goldsmith | Director | 7 Sept 1995 | 15 Nov 1996 | British | 78 years |
| Alan Paul Huntington | Director | 14 Sept 1992 | 1 Nov 1992 | British | 77 years |
| Anthony Clarke | Director | 15 Aug 2019 | 1 Sept 2022 | British | 53 years |
| Christiaan Geerinck | Director | 7 Sept 1995 | 31 Dec 1995 | Dutch | 80 years |
| Constantinos Demosthenes Sinis | Director | 14 Sept 1992 | 14 Dec 1995 | Greek | 91 years |
| Daniel Cornelis Van Zanten | Director | 1 Nov 1992 | 15 Jan 1996 | Dutch | 81 years |
| Diane June Penfold | Secretary | 1 Oct 1992 | 30 Sept 1994 | British | - |
| Dipa Raivadera | Secretary | 3 Oct 1994 | 26 Nov 1997 | British | - |
| George Sifalakis | Director | 29 Sept 1992 | 1 Mar 1993 | Greek | 90 years |
| George Sifalakis | Director | 16 Mar 1993 | 1 Nov 1994 | Greek | 90 years |
| Hubert Maarten Le Clercq | Director | 26 Sept 1994 | 15 Jan 1996 | Dutch | 81 years |
| Iain Richardson | Director | 17 Jun 1996 | 31 Dec 1998 | British | 79 years |
| Jan Olov Ericksson | Director | 14 Sept 1992 | 1 Mar 1993 | Swedish | 90 years |
| John Edwin Perry | Director | 14 Dec 1994 | 14 Dec 1995 | British | 73 years |
| John Richard Gabriel | Director | 14 Sept 1992 | 31 May 1995 | British | 72 years |
| Joseph Maximiliaan Elisabeth Hessels | Director | 1 Nov 1992 | 15 Sept 1994 | Dutch | 70 years |
| Karin Jacqueline Hawkins | Director | 29 Sept 2010 | 27 Jan 2012 | British | 65 years |
| Marcel Niggebrugge | Director | 14 Sept 1992 | 1 Nov 1992 | Netherlands | 76 years |
| Margaret Miriam Pegg | Secretary | 14 Sept 1992 | 1 Oct 1992 | British | - |
| Martin Alexander Bradley | Director | 14 Sept 1992 | 1 Nov 1992 | British | 78 years |
| Michael John Ashworth | Director | 24 Jan 2012 | 15 Aug 2019 | British | 65 years |
| Nicholas Antony Norman Stuart Robertson | Director | 18 Feb 1999 | 29 Mar 2000 | British | 76 years |
| Paul Van Loon | Director | 1 Nov 1992 | 6 Sept 1993 | Dutch | 83 years |
| Peter Van Haaps | Director | 1 Mar 1993 | 14 Dec 1995 | Dutch | 90 years |
| Petros Papadopoulos | Director | 14 Sept 1992 | 14 Dec 1995 | Greek | 85 years |
| Rainer Laufs | Director | 14 Sept 1992 | 1 Nov 1992 | German | 85 years |
| Trevor Hobson | Director | 17 Jun 1996 | 27 May 2002 | British | 76 years |