| Ann Trewhella Cripps | Director | 7 Dec 1992 | 29 Dec 2000 | British | 69 years |
| Clare Maria Everson | Director | 4 Mar 1996 | 31 Mar 2000 | British | 64 years |
| Clive Lee Hetherington | Director | 17 Jun 1996 | 20 Apr 2000 | British | 69 years |
| Clive Lee Hetherington | Secretary | 6 Mar 1996 | 14 May 2000 | British | - |
| Colin Robert Hamilton Lawson | Director | 29 Oct 1991 | 12 Feb 1993 | British | 83 years |
| Daniel Wright | Director | 1 Nov 1998 | 30 Mar 2001 | British | 72 years |
| David Richardson | Director | 29 Oct 1991 | 6 Mar 1996 | British | 81 years |
| David Richardson | Secretary | 29 Oct 1991 | 6 Mar 1996 | British | - |
| Gosse Visser | Director | 1 Dec 1993 | 1 Nov 1997 | Dutch | 66 years |
| Graeme Trevor Daniel | Director | 14 May 2000 | 11 Apr 2005 | British | 70 years |
| Graeme Trevor Daniel | Secretary | 14 May 2000 | 11 Apr 2005 | British | - |
| Jacob Jan Koops | Director | 29 Oct 1991 | 26 Jul 1999 | Dutch | 79 years |
| Jean Kathleen Mary Cuthbert | Director | 29 Oct 1991 | 26 Jul 1999 | British | 94 years |
| John Anthony Houston | Director | 29 Oct 1991 | 6 Aug 1997 | British | 78 years |
| Marc Emile Sidonie Verstringhe | Director | 29 Oct 1991 | 26 Jul 1999 | British | 91 years |
| Michael Franklin Audis | Director | 12 Jul 2005 | 31 Dec 2010 | British | 72 years |
| Nicholas Ian Boston | Director | 25 Mar 2011 | 30 Nov 2016 | British | 66 years |
| Nigel Robert Anker | Director | 29 Oct 1991 | 29 Apr 1994 | British | 75 years |
| Peter Gregory Price | Director | 29 Oct 1991 | 31 Jan 1992 | British | 76 years |
| Philip Joseph Foster | Director | 31 Dec 2010 | 25 Mar 2011 | British | 59 years |
| Sarah Elizabeth Banner | Director | 29 Oct 1991 | 30 Nov 1999 | British | 81 years |
| Timothy John Doubleday | Director | 11 Apr 2005 | 25 Jun 2008 | British | 61 years |
| Timothy John Doubleday | Secretary | 11 Apr 2005 | 25 Jun 2008 | British | - |
| Timothy John West | Director | 14 May 2000 | 1 Jul 2005 | British | 70 years |
| Viola Haire | Director | 29 Oct 1991 | 31 Dec 1997 | British | 88 years |