| Adrian Patrick White | Director | 30 Apr 2008 | 19 Sept 2011 | British | 59 years |
| Allison Jane Currie | Secretary | 12 Mar 2012 | 6 Jul 2012 | - | - |
| Andrew Henry Longhurst | Director | 16 Jun 1997 | 15 Apr 1998 | British | 87 years |
| Archibald Gerard Kane | Director | 23 Aug 1994 | 4 Apr 1996 | British | 74 years |
| Brian John Marsh | Secretary | 4 Apr 1991 | 4 Apr 1995 | British | - |
| Christopher John Collins | Director | 23 Aug 1994 | 16 Jun 1997 | British | 75 years |
| Christopher Sutton | Director | 1 Sept 2011 | 9 Jul 2015 | British | 68 years |
| Claude Kwasi Sarfo-agyare | Director | 21 Nov 2012 | 25 Jun 2018 | British | 57 years |
| Colin Michael Fisher | Director | 4 Apr 1996 | 12 Feb 1997 | British | 81 years |
| Damian Charles Stansfield | Director | 9 Apr 2015 | 16 Sept 2015 | British | 60 years |
| Damian Charles Stansfield | Director | 10 Jul 2017 | 31 May 2018 | British | 60 years |
| David Anthony Baggaley | Director | 16 Jun 1997 | 11 Mar 1998 | British | 83 years |
| David Dermot Hennessey | Secretary | 25 Jan 2017 | 8 Jan 2024 | - | - |
| David James Stanley Oldfield | Director | 19 Dec 2006 | 21 Nov 2012 | British | 64 years |
| David Jarvis | Secretary | 15 Sept 2003 | 1 Oct 2009 | British | - |
| David Keith Potts | Director | 4 Apr 1991 | 16 Jun 1997 | British | 75 years |
| David Keith Potts | Director | 31 Mar 2000 | 28 Sept 2007 | British | 75 years |
| David Peter Pritchard | Director | 1 Jan 2000 | 21 Aug 2003 | British | 82 years |
| Frederick John Randall | Director | 25 Oct 1994 | 4 Apr 1996 | British | 85 years |
| Gordon Malcolm Lawrence Skingley | Director | 4 Apr 1991 | 31 Jul 1992 | British | 93 years |
| Gordon Raymond Bird | Director | 4 Apr 1991 | 16 Jun 1997 | British | 79 years |
| Hamish Kinloch Paton | Director | 4 Apr 1991 | 31 May 1991 | British | 81 years |
| Jakob Pfaudler | Director | 21 Nov 2012 | 10 Aug 2015 | Austrian | 54 years |
| James Michael Bury | Director | 16 Jun 1997 | 14 Apr 2000 | British | 65 years |
| John Anthony Penny | Director | 25 Oct 1994 | 4 Apr 1996 | British | 85 years |
| John Bourke | Director | 22 Oct 1992 | 31 Dec 1993 | Irish | 89 years |
| John Howard Ross | Secretary | 17 Mar 1995 | 30 Jun 1997 | British | - |
| John Lewis Davies | Director | 4 Apr 1991 | 22 Jan 1997 | British | 77 years |
| John Lewis Davies | Director | 1 Jan 2000 | 18 Dec 2006 | British | 77 years |
| John Richard Whittington | Director | 22 Oct 1992 | 16 Jun 1997 | British | 81 years |
| Juan Gomez-reino | Director | 27 Feb 2015 | 26 Oct 2016 | Spanish | 54 years |
| Keith Douglas Pusey | Director | 4 Apr 1991 | 23 Aug 1994 | British | 81 years |
| Kim Morris | Director | 6 Aug 2021 | 31 Oct 2024 | British | 51 years |
| Mervyn Kay Pedelty | Director | 4 Apr 1991 | 30 Jun 1994 | British | 77 years |
| Michael Alan Pearson | Director | 3 Aug 1992 | 23 Aug 1994 | British | 64 years |
| Michael Edward Fairey | Director | 3 Aug 1992 | 4 Apr 1996 | British | 78 years |
| Michael Edward Fairey | Director | 15 Apr 1998 | 31 Dec 1999 | British | 78 years |
| Michael Lawrence Ingham | Director | 4 Apr 1991 | 16 Jun 1997 | British | 74 years |
| Michael Peter Kilbee | Director | 21 Aug 2003 | 30 Apr 2008 | British | 79 years |
| Michael Peter Kilbee | Secretary | 30 Jun 1997 | 15 Sept 2003 | British | - |
| Michael William Shaw | Director | 13 Aug 1996 | 27 Feb 1997 | British | 79 years |
| Paul Gittins | Secretary | 30 Jul 2013 | 25 Jan 2017 | - | - |
| Paul Gittins | Secretary | 23 Jan 2024 | 31 Jul 2024 | - | - |
| Peter Francis Hook | Director | 22 Jan 1997 | 31 Dec 1999 | British | 82 years |
| Philip John Stones | Director | 28 Apr 1993 | 8 Apr 1997 | British | 80 years |
| Philip Robert Grant | Director | 16 Sept 2015 | 25 May 2017 | British | 60 years |
| Raymond John Hildreth Milne | Director | 3 Sept 2018 | 14 Mar 2021 | British | 67 years |
| Richard Andrew Jones | Director | 9 Jul 2015 | 28 Oct 2022 | British | 54 years |
| Roy Leslie Sterry | Director | 4 Apr 1991 | 31 Oct 1994 | British | 81 years |
| Stephen John Hopkins | Secretary | 1 Oct 2009 | 28 Feb 2010 | British | - |
| Timothy Mark Blackwell | Director | 28 Sept 2007 | 21 Jun 2011 | British | 57 years |