| Adam Simon Wiltshire | Director | 22 Mar 2013 | 13 Nov 2017 | British | 61 years |
| Alan Groves | Director | 22 Nov 1994 | 13 Oct 1995 | British | 90 years |
| Alan Victor Towers | Director | 15 Aug 1991 | 10 Oct 1995 | British | 84 years |
| Alan Victor Towers | Director | 10 Oct 1995 | 17 Nov 1995 | British | 84 years |
| Alec Simmons | Director | 29 Apr 1992 | 17 Nov 1995 | British | 91 years |
| Alexandra Morton Lewis | Director | 1 Dec 2006 | 9 Sept 2013 | British | 54 years |
| Alice Parker Morgan | Secretary | 8 Mar 2016 | 30 Nov 2018 | British | - |
| Andrew Brian Chapman | Director | 20 Dec 2002 | 1 Feb 2005 | British | 70 years |
| Andrew Jonathan Agg | Director | 10 Jul 2009 | 31 May 2013 | British | 57 years |
| Andrew Peter Durrant | Secretary | 9 May 2007 | 19 Oct 2007 | British | - |
| Andrew Robert John Bonfield | Director | 1 Dec 2010 | 30 Jul 2018 | British | 64 years |
| Andrew William Nicol | Director | 15 Aug 1991 | 31 Aug 1993 | British | 93 years |
| Anthony William John Coleman | Director | 1 Dec 1991 | 31 Aug 1994 | British | 77 years |
| Antony Hadfield | Director | 31 Oct 1991 | 22 Nov 1994 | British | 90 years |
| Bryan Henry Weston | Director | 15 Aug 1991 | 15 Aug 1994 | British | 96 years |
| Bryan Sydney Townsend | Director | 15 Aug 1991 | 17 Nov 1995 | British | 96 years |
| Charles Ralph Ambrose Carter | Director | 12 Mar 2002 | 29 Nov 2002 | British | 59 years |
| Christopher John Waters | Director | 30 Sept 2008 | 28 Mar 2023 | British | 59 years |
| Colin Mcdougall Gibson | Director | 17 Nov 1995 | 31 Jan 1997 | British | 84 years |
| David Alexander Lovesey | Director | 15 Aug 1991 | 15 Aug 1994 | British | 91 years |
| David Charles Bonar | Director | 1 Mar 2012 | 26 Apr 2018 | British | 55 years |
| David Charles Forward | Secretary | 20 Dec 2002 | 30 Nov 2013 | British | - |
| David George Jefferies | Director | 17 Nov 1995 | 22 Jul 1999 | British | 93 years |
| David Harold Jones | Director | 15 Aug 1991 | 15 Aug 1994 | British | 84 years |
| David Richard Morris | Director | 15 Aug 1991 | 17 Nov 1995 | British | 92 years |
| Duncan Alexander Ross | Director | 15 Aug 1991 | 31 May 1993 | British | 98 years |
| Edward Morrison Astle | Director | 1 Sept 2001 | 31 Jan 2003 | British | 72 years |
| Emmanuel David Fraser | Director | 14 Feb 2013 | 30 Oct 2015 | British/australian | 49 years |
| Eric William Chefneux | Director | 17 Nov 1995 | 31 Dec 1995 | British | 88 years |
| Fiona Brown Smith | Director | 12 Mar 2002 | 31 Dec 2002 | British | 67 years |
| Fiona Brown Smith | Secretary | 1 Jul 1996 | 31 Dec 2002 | British | - |
| Geoffrey Holroyd | Director | 28 Nov 2007 | 10 Jul 2009 | British | 74 years |
| Geoffrey Holroyd | Director | 10 Jul 2009 | 1 Mar 2012 | British | 74 years |
| George Alexander Squair | Director | 15 Aug 1991 | 30 Sept 1992 | British | 97 years |
| George Malcolm Williamson | Director | 17 Nov 1995 | 22 Jul 1999 | British | 87 years |
| Heather Maria Rayner | Secretary | 28 Feb 2011 | 8 Mar 2016 | - | - |
| Henry Roberts Casley | Director | 31 May 1993 | 17 Nov 1995 | British | 89 years |
| Hugh Campbell Hamilton | Secretary | 15 Aug 1991 | 17 Nov 1995 | British | - |
| Ian Robinson | Director | 17 Oct 1995 | 17 Nov 1995 | British | 84 years |
| Ian Simon Macgregor Russell | Director | 17 Oct 1995 | 17 Nov 1995 | British | 73 years |
| Jack Albert Harmsworth | Director | 15 Aug 1991 | 30 Oct 1991 | English | 98 years |
| James Cadzow Smith | Director | 15 Aug 1991 | 10 Oct 1995 | British | 99 years |
| James Hood Ross | Director | 1 Mar 1999 | 12 Mar 2002 | British | 88 years |
| James Porteous | Director | 15 Aug 1991 | 1 Dec 1991 | British | 100 years |
| John Albert Gordon Bonner | Director | 1 Sept 1983 | 17 Nov 1995 | British | 84 years |
| John Albert Martin Grant | Director | 17 Nov 1995 | 12 Mar 2002 | British | 81 years |
| John Astall | Director | 9 Jun 1994 | 31 Oct 1994 | British | 76 years |
| John Edward Roberts | Director | 15 Aug 1991 | 16 May 1994 | British | 80 years |
| John Francis Devaney | Director | 15 Sept 1992 | 17 Nov 1995 | British | 80 years |
| John Frederick Edwards | Director | 13 Oct 1995 | 17 Nov 1995 | British | 78 years |
| John Frederick Harris | Director | 15 Aug 1991 | 30 Apr 1994 | British | 88 years |
| John Junior Seed | Director | 1 Sept 1993 | 17 Nov 1995 | British | 88 years |
| John Malcolm Chatwin | Director | 25 Aug 1994 | 17 Nov 1995 | British | 81 years |
| John Richard Uttley | Director | 17 Nov 1995 | 30 Jun 1997 | British | 81 years |
| John Sidney Tysoe | Director | 15 Aug 1991 | 1 Dec 1991 | British | 94 years |
| John Wesley Deane | Director | 25 May 1995 | 17 Nov 1995 | British | 82 years |
| John Wynford Evans | Director | 1 Aug 1993 | 17 Nov 1995 | British | 92 years |
| Keith Stanyard | Director | 15 Aug 1991 | 31 May 1994 | British | 84 years |
| Kenneth George Harvey | Director | 15 Aug 1991 | 17 Nov 1995 | British | 86 years |
| Laura Sophie Scudamore Barbrook | Director | 1 Sept 2020 | 1 Apr 2024 | British | 53 years |
| Lawrence Hagan | Secretary | 18 Nov 2022 | 26 Oct 2023 | - | - |
| Malcolm Charles Cooper | Director | 20 Dec 2002 | 4 Jan 2016 | British | 67 years |
| Mark Antony David Flawn | Director | 30 Sept 2008 | 22 Mar 2013 | British | 70 years |
| Mark David Noble | Secretary | 19 Oct 2007 | 1 Nov 2010 | British | - |
| Martin Donal O'donovan | Director | 12 Mar 2002 | 20 Dec 2002 | British | 72 years |
| Megan Barnes | Secretary | 30 Nov 2018 | 18 Nov 2022 | - | - |
| Melissa Jane Sellars | Director | 10 Jul 2009 | 14 Sept 2012 | British | 57 years |
| Michael Alan Hughes | Director | 7 Jun 1993 | 17 Nov 1995 | British | 81 years |
| Michael Alexander Smyth-osbourne | Director | 1 Feb 2005 | 31 Oct 2006 | British | 59 years |
| Michael James Pavia | Director | 16 Feb 1995 | 17 Nov 1995 | British | 80 years |
| Michael John Kersey | Director | 10 Oct 1995 | 17 Nov 1995 | British | 85 years |
| Norman Brian Montague Askew | Director | 9 Jun 1994 | 17 Nov 1995 | British | 84 years |
| Paul Lewis Joskow | Director | 27 Mar 2000 | 12 Mar 2002 | Us Citizen | 79 years |
| Philip Lyndon Higgins | Secretary | 1 Nov 2010 | 25 Feb 2011 | - | - |
| Richard Francis Pettifer | Director | 27 Mar 2003 | 30 Sept 2008 | Australian | 72 years |
| Richard Gurdon Reynolds | Director | 20 Feb 1998 | 12 Mar 2002 | British | 87 years |
| Richard Keith Drew | Secretary | 17 Nov 1995 | 30 Jun 1996 | British | - |
| Richard P Sergel | Director | 27 Mar 2000 | 17 Jun 2002 | American | 77 years |
| Robert Frederick William Faircloth | Director | 17 Nov 1995 | 12 Mar 2002 | Us Citizen | 90 years |
| Robert John Davies | Director | 9 Jun 1994 | 17 Nov 1995 | British | 78 years |
| Roger John Urwin | Director | 15 Aug 1991 | 5 Sept 1995 | British | 80 years |
| Roger John Urwin | Director | 17 Nov 1995 | 31 Dec 2006 | British | 80 years |
| Sally Kenward | Secretary | 26 Oct 2023 | 6 Nov 2023 | - | - |
| Simon Warren Grant | Director | 10 Aug 2017 | 1 Oct 2024 | British | 47 years |
| Stephen Charles Burrard-lucas | Director | 14 Nov 2002 | 1 Dec 2010 | British | 72 years |
| Stephen Francis Noonan | Director | 27 Mar 2003 | 10 Jul 2009 | British | 66 years |
| Stephen John Box | Director | 4 Aug 1997 | 30 Nov 2002 | British | 76 years |
| Steven John Holliday | Director | 30 Mar 2001 | 31 Jan 2003 | British | 70 years |
| Steven John Holliday | Director | 1 Jan 2007 | 31 Mar 2016 | British | 70 years |
| Stuart Calvin Humphreys | Director | 1 Jun 2013 | 31 Dec 2019 | British | 63 years |
| Stuart James Siddall | Director | 22 May 1995 | 17 Nov 1995 | British | 73 years |
| Thomas James Ellis | Director | 1 Oct 1992 | 17 Nov 1995 | British | 84 years |
| Walter Trevor Robinson | Director | 17 Nov 1995 | 31 Jul 1997 | British | 101 years |
| Walter Waring | Director | 15 Aug 1991 | 15 Sept 1992 | British | 99 years |
| William Joseph Jackson | Director | 10 Sept 2014 | 10 Aug 2017 | British | 46 years |
| Wolbert Gerretsen | Director | 17 Nov 1995 | 19 Oct 2000 | Dutch | 84 years |