| Adrian Mark Rowland Mitchell | Director | 21 Apr 2010 | 8 Dec 2013 | British | 68 years |
| Alan William Eatwell | Director | 3 Apr 1995 | 30 Jun 2001 | British | 73 years |
| Alan William Eatwell | Director | N/A | 17 Nov 1993 | British | 73 years |
| Alexander Charles Chutter | Director | 22 Dec 2022 | 30 Nov 2023 | British | 37 years |
| Anthony Eric Griffiths | Director | 13 Mar 2003 | 31 Jul 2007 | British | 82 years |
| Anthony Michael Sedgley | Director | N/A | 17 Nov 1993 | British | 88 years |
| Bruce Charles Sellars | Director | N/A | 17 Nov 1993 | British | 102 years |
| Christian Schreyer | Director | 5 Nov 2021 | 10 Jun 2022 | German | 58 years |
| Christopher Moyes | Director | 17 Nov 1993 | 8 Jul 2006 | British | 77 years |
| David Allen Brown | Director | 1 Apr 2011 | 5 Nov 2021 | British | 66 years |
| Douglas Jamieson Adie | Director | 5 Sept 1995 | 13 Mar 1997 | British | 85 years |
| Elodie Marie Francoise Brian | Director | 5 Jun 2019 | 27 Sept 2021 | French | 47 years |
| Gordon Alexander Boyd | Director | 28 Sept 2021 | 28 Mar 2022 | British | 66 years |
| Ian Philip Butcher | Director | 1 Apr 1996 | 1 Jul 2007 | British | 75 years |
| Ian Philip Butcher | Secretary | 1 Apr 1996 | 30 Jun 2006 | British | - |
| Keith Down | Director | 7 Mar 2011 | 6 Dec 2015 | British | 61 years |
| Keith Lawrence Ludeman | Director | 10 Jul 2006 | 2 Jul 2011 | British | 76 years |
| Kevin David Carey | Director | 29 Jun 2015 | 22 Dec 2022 | British | 67 years |
| Martin Philip Harris | Director | 1 Apr 2013 | 30 Nov 2021 | British | 69 years |
| Martin Stanley Andrew Ballinger | Director | 17 Nov 1993 | 31 Dec 2004 | British | 83 years |
| Michael Derek Best | Director | 21 Jul 2008 | 30 Nov 2018 | British | 63 years |
| Nicholas Swift | Director | 17 Jul 2007 | 7 Mar 2011 | British | 62 years |
| Paul Stanley Williams | Director | 13 Mar 2003 | 30 Jun 2008 | British | 80 years |
| Peter Frederick Lanfranchi | Director | 18 Nov 1993 | 3 Apr 1995 | British | 87 years |
| Philip Stephen Woodgate | Director | 1 Aug 2000 | 28 Feb 2014 | British | 63 years |
| Roger William French | Director | N/A | 31 Mar 2013 | British | 72 years |
| Rosemary Holland | Director | 12 Dec 1996 | 31 Jul 2000 | British | 87 years |
| Rosemary Holland | Director | N/A | 17 Nov 1993 | British | 87 years |
| Rosemary Holland | Secretary | N/A | 17 Nov 1993 | British | - |
| Simon Patrick Butcher | Director | 14 Mar 2016 | 30 Nov 2018 | British | 59 years |
| Stephen Ambury | Director | 12 Dec 2013 | 11 Aug 2023 | British | 63 years |
| Trevor Halliday Shears | Director | 17 Nov 1993 | 31 Mar 1996 | British | 81 years |
| Trevor Halliday Shears | Secretary | 17 Nov 1993 | 31 Mar 1996 | British | - |