| Alan William Eatwell | Director | 16 May 1996 | 16 Oct 2002 | British | 73 years |
| Andrew John Whitley | Director | 19 Sept 1994 | 18 Oct 1994 | British | 63 years |
| Christian Schreyer | Director | 5 Nov 2021 | 13 Dec 2022 | German | 58 years |
| Christopher Moyes | Director | 1 Nov 1994 | 8 Jul 2006 | British | 77 years |
| Clive Hodson | Director | 10 Sept 1993 | 17 Oct 1994 | British | 84 years |
| David Allen Brown | Director | 16 Feb 1998 | 19 Aug 2006 | British | 66 years |
| David Allen Brown | Director | 1 Apr 2011 | 5 Nov 2021 | British | 66 years |
| David Arthur Cutts | Director | 10 Sept 2006 | 18 Apr 2024 | British | 57 years |
| Derek Stephen Watson | Director | 19 Sept 1994 | 18 Oct 1994 | British | 77 years |
| Douglas Jamieson Adie | Director | 18 May 1991 | 13 Mar 1997 | British | 85 years |
| Edward Vine Bennett | Director | 19 Sept 1994 | 18 Oct 1994 | British | 96 years |
| Elodie Marie Francoise Brian | Director | 5 Jun 2019 | 27 Sept 2021 | French | 47 years |
| Geoffrey John Porter | Director | 18 May 1991 | 17 Oct 1994 | British | 83 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 | - |
| John Ernest Ingleton | Director | 18 May 1991 | 1 Apr 1993 | British | 93 years |
| John Martin Elms | Director | 16 Sept 1996 | 31 Dec 1997 | British | 82 years |
| John Trayner | Director | 7 Jan 2002 | 26 Sept 2024 | British | 67 years |
| Keith Down | Director | 7 Mar 2011 | 6 Dec 2015 | British | 61 years |
| Keith Lawrence Ludeman | Director | 1 Aug 1996 | 20 May 1999 | British | 76 years |
| Keith Lawrence Ludeman | Director | 10 Jul 2006 | 2 Jul 2011 | British | 76 years |
| Martin Stanley Andrew Ballinger | Director | 17 Oct 1994 | 31 Dec 2004 | British | 83 years |
| Michael John Slattery | Director | 1 Jan 2014 | 18 Apr 2024 | Irish | 59 years |
| Nicholas Swift | Director | 17 Jul 2007 | 7 Mar 2011 | British | 62 years |
| Paul William James Reeves | Director | 1 Aug 1996 | 31 Mar 2014 | British | 73 years |
| Peter Frederick Lanfranchi | Director | 1 Nov 1994 | 3 Apr 1995 | British | 87 years |
| Philip Richard John Margrave | Director | 1 Aug 1996 | 22 Aug 2014 | British | 72 years |
| Richard Harrington | Director | 1 Jan 2014 | 1 Aug 2023 | British | 59 years |
| Robin Ainsworth Raine Young | Director | 18 May 1991 | 18 Oct 1994 | British | 84 years |
| Robin Ainsworth Raine Young | Director | 1 Nov 1994 | 14 Dec 2001 | British | 84 years |
| Robin Reginald Reynolds | Director | 18 May 1991 | 18 Oct 1994 | British | 83 years |
| Robin Reginald Reynolds | Director | 1 Nov 1994 | 31 Jul 1996 | British | 83 years |
| Rodney Bryan Pangbourne | Director | 1 Apr 1993 | 3 Sept 1993 | British | 84 years |
| Sam Joseph Sawers | Director | 3 Jun 2024 | 19 Sept 2024 | New Zealander | 38 years |
| Simon Patrick Butcher | Director | 14 Mar 2016 | 30 Nov 2018 | British | 59 years |
| Thomas Guy Joyner | Director | 3 Jun 2024 | 31 Jan 2025 | British,south African | 52 years |
| Trevor Halliday Shears | Director | 17 Oct 1994 | 31 Mar 1996 | British | 81 years |
| Trevor Halliday Shears | Secretary | 17 Oct 1994 | 31 Mar 1996 | British | - |
| Willem Odo Buttinger | Director | 18 May 1991 | 21 Apr 1992 | British | 77 years |
| Willem Odo Buttinger | Secretary | 18 May 1991 | 21 Apr 1992 | British | - |
| William Gordon Stewart | Director | 21 Apr 1992 | 18 Oct 1994 | British | 90 years |
| William Gordon Stewart | Director | 1 Nov 1994 | 31 Jul 1996 | British | 90 years |
| William Gordon Stewart | Secretary | 21 Apr 1992 | 17 Oct 1994 | British | - |