| Adele Ann Abigail | Director | 7 Aug 2008 | 1 Oct 2009 | Irish | 53 years |
| Alex Wilson | Director | 11 Sept 1996 | 31 Mar 2000 | British | 73 years |
| Allen Frederick Peeters | Director | 19 Jun 1992 | 29 Dec 1995 | Belgian | 77 years |
| Allen Frederick Peeters | Director | 31 Jan 2000 | 20 Jan 2003 | Belgian | 77 years |
| Andrew Mark Smith | Director | 29 Jun 2009 | 29 Jun 2009 | British | 62 years |
| Andrew Mark Smith | Director | 29 Jun 2009 | 2 Feb 2012 | British | 62 years |
| Aniko Mahler | Director | 5 Nov 2015 | 1 Aug 2018 | Hungarian | 50 years |
| Aniko Mahler | Director | 8 Nov 2021 | 12 Dec 2024 | Hungarian | 50 years |
| Anthony Armitage Greener | Director | 28 Jun 1996 | 16 Sept 1998 | British | 86 years |
| Brendon Richard O'neill | Director | 15 Feb 1993 | 8 May 1998 | British | 78 years |
| Brian Aodh Slowey | Director | 19 Jun 1992 | 31 Dec 1992 | Irish | 93 years |
| Brian Beanland | Secretary | 19 Jun 1992 | 16 Jan 1996 | British | - |
| Brian Ford Baldock | Director | 19 Jun 1992 | 28 Jun 1996 | British | 92 years |
| Brian Joseph Oneill | Director | 19 Jun 1992 | 7 Dec 1993 | Irish | 80 years |
| Charles Dawson Coase | Director | 7 Apr 2005 | 31 Mar 2011 | British | 66 years |
| Claire Elizabeth Matthews | Secretary | 2 Feb 2012 | 5 Jan 2018 | - | - |
| Colin Archibald Storm | Director | 19 Jun 1992 | 29 Dec 1995 | British | 87 years |
| Colin Archibald Storm | Director | 2 Jul 1997 | 12 Apr 2001 | British | 87 years |
| David Frederick Harlock | Director | 26 May 2016 | 1 Aug 2018 | British | 66 years |
| David Herbert Campbell Hampshire | Director | 7 Dec 1993 | 22 Dec 1995 | British | 82 years |
| David Peter Gosnell | Director | 20 Jan 2003 | 11 Feb 2011 | British | 69 years |
| Dora Keresztesi | Director | 11 Sept 2020 | 8 Nov 2021 | Hungarian | 40 years |
| Gabor Kovacs | Director | 1 Aug 2018 | 1 Sept 2020 | Hungarian | 46 years |
| Gary Steven Matthews | Director | 1 Apr 1998 | 15 Jan 1999 | American | 69 years |
| Gavin Paul Crickmore | Director | 5 Sept 2007 | 2 Feb 2012 | British | 68 years |
| James Patrick Joseph Mcclean | Director | 18 Apr 1994 | 31 Jan 2000 | Irish | 81 years |
| John Brian Mcgrath | Director | 16 Sept 1998 | 18 Dec 2000 | British | 88 years |
| John Daniel Sydney Davies | Director | 19 Jun 1992 | 22 Dec 1995 | British | 91 years |
| John Frederick Hearnden | Director | 19 Jun 1992 | 30 Jun 1994 | British | 82 years |
| John James Nicholls | Director | 25 Mar 2011 | 9 Mar 2018 | British | 64 years |
| John James Nicholls | Secretary | 7 Dec 2001 | 2 Feb 2012 | British | - |
| John Stanley Smale | Director | 19 Jun 1992 | 30 Nov 1996 | British | 89 years |
| John William Pursell | Director | 16 Dec 2011 | 5 Nov 2015 | American | 65 years |
| Jonathan Michael Guttridge | Secretary | 5 Jan 2018 | 20 Apr 2018 | - | - |
| Jose Alberto Ibeas Franco | Director | 16 Dec 2011 | 2 Feb 2012 | Spanish | 54 years |
| Mark David Peters | Secretary | 17 Jan 1996 | 1 Jun 1997 | British | - |
| Matthew John Lester | Director | 7 Apr 2005 | 31 Aug 2006 | British | 63 years |
| Michael Arthur Kayser | Director | 1 Jan 1993 | 1 Sept 1995 | British | 71 years |
| Michael Christopher Flynn | Director | 7 Apr 2005 | 15 Jun 2008 | British | 69 years |
| Michael John Hughes | Director | 19 Jun 1992 | 31 Jul 1997 | British | 76 years |
| Nandor Makos | Director | 3 Aug 2006 | 1 Aug 2014 | Hungarian | 62 years |
| Nicholas Toby Fell | Director | 11 Sept 1996 | 29 Jun 2001 | British | 72 years |
| Paul Derek Tunnacliffe | Director | 7 Jan 2008 | 30 Jun 2016 | British | 64 years |
| Paul Martin Forster | Secretary | 1 Jun 1997 | 26 Jan 1998 | British | - |
| Peter Woodgate Lipscombe | Director | 19 Jun 1992 | 31 Dec 1995 | British | 87 years |
| Philip Edward Yea | Director | 19 Jun 1992 | 1 Jan 1993 | British | 72 years |
| Raymond James Joy | Director | 1 Sept 1997 | 22 Jun 2007 | British | 72 years |
| Raymond James Joy | Secretary | 1 Mar 1999 | 7 Dec 2001 | British | - |
| Richelle Therese Twomey | Director | 5 Nov 2015 | 30 Jul 2021 | Irish | 51 years |
| Roger Hugh Myddelton | Director | 7 Dec 2001 | 31 Mar 2003 | British | 84 years |
| Sally Catherine Moore | Director | 28 Jun 2007 | 28 Jun 2007 | British | 61 years |
| Sharon Maria Elizabeth Odonovan | Secretary | 26 Jan 1998 | 1 Mar 1999 | British | - |
| Shaun Patrick Holliday | Director | 2 Aug 1994 | 18 Dec 1995 | Irish | 69 years |
| Stephen Dando | Director | 1 Jul 2000 | 10 Jun 2001 | British | 64 years |
| Stephen John Bolton | Director | 1 Apr 2011 | 2 Feb 2012 | British | 64 years |
| Stuart Robert Fletcher | Director | 1 Aug 1995 | 1 Sept 1997 | British | 69 years |
| Stuart Robert Fletcher | Director | 30 Sept 1999 | 1 Dec 2010 | British | 69 years |
| Susanne Margaret Bunn | Director | 7 Dec 2001 | 4 Jan 2008 | British | 67 years |
| Victoria Cooper | Secretary | 5 Nov 2015 | 23 Mar 2017 | - | - |
| William Spears | Director | 8 Dec 1992 | 7 Dec 1993 | British | 66 years |