| Abraham Kalyapu | Director | 23 May 2007 | 31 Dec 2012 | Zambian | 49 years |
| Allan Edward Dowdeswell | Director | 18 Mar 2004 | 30 May 2006 | British | 90 years |
| Andrew John Chapman | Director | 25 Mar 1999 | 4 Nov 1999 | British | 64 years |
| Angela Dawn Curtis | Director | 5 Oct 2015 | 4 May 2016 | British | 70 years |
| Annette Marie Quail | Director | 25 Jul 2002 | 10 Jan 2003 | British | 67 years |
| Carol Anne Godley | Director | 12 Oct 2007 | 22 Feb 2008 | British | 80 years |
| Chan Raj Abraham | Secretary | 18 May 2011 | 28 Jun 2017 | - | - |
| Chan Raj Abraham | Secretary | 12 Oct 1999 | 2 Apr 2008 | British | - |
| Colin Richard Hyams | Director | 16 Nov 2011 | 16 Nov 2011 | British | 85 years |
| Colin Richard Hyams | Director | 29 Feb 2012 | 28 Jun 2013 | British | 85 years |
| Daniel Rajan | Director | 26 Jul 2001 | 29 Sept 2003 | Indian | 67 years |
| David John Reedman | Director | 25 Mar 1999 | 19 Apr 1999 | British | 88 years |
| David Thomas Cruyfft | Director | 29 Sept 2004 | 1 Apr 2005 | British | 66 years |
| David Vessey | Director | 28 Sept 2005 | 12 Nov 2014 | British | 85 years |
| Deborah Christine Reynolds | Director | 6 Jan 2003 | 7 Sept 2004 | British | 70 years |
| Derek Peter Holley | Director | 26 Jul 2001 | 4 Mar 2003 | British | 84 years |
| Diane Hennessey | Director | 28 Jan 2004 | 28 Jun 2005 | British | 64 years |
| Edward Graham Thomas Cooper | Director | 15 Sept 1999 | 31 Jul 2000 | British | 96 years |
| Edwood Brian Benedict Atling | Director | 2 Dec 1999 | 29 Sept 2004 | British | 80 years |
| Elinor Mary Philomena Mcneill | Director | 25 Mar 1999 | 26 Jul 2001 | British | 78 years |
| Elizabeth Audrey Mear | Director | 26 Jul 2001 | 28 Jan 2003 | British | 75 years |
| Elizabeth Nalumooza Ddamulira | Director | 11 Nov 2015 | 7 Nov 2017 | Ugandan | 57 years |
| Jack Setchell | Director | 20 May 1999 | 29 Sept 2004 | British | 94 years |
| James Dudley Fell | Director | 2 Feb 2000 | 29 Jul 2002 | British | 95 years |
| James Edward Bird | Director | 29 Sept 2004 | 21 Jun 2005 | British | 82 years |
| James Edward Corley | Director | 30 Nov 2006 | 31 Oct 2015 | English | 81 years |
| James Ernest White | Director | 4 Nov 2015 | 4 May 2016 | British | 60 years |
| Janet Elizabeth Boston | Director | 1 Jul 2010 | 26 Mar 2018 | British | 82 years |
| Jeremy Miles | Director | 19 Mar 1999 | 25 Mar 1999 | British | 55 years |
| John Edward Garner | Director | 28 Jan 2003 | 5 Jul 2006 | British | 94 years |
| John Geoffrey Burniston | Director | 30 Oct 2003 | 4 Jun 2008 | British | 90 years |
| John Keith Walters | Director | 25 Nov 2009 | 10 Mar 2011 | British | 86 years |
| John Nicol Simpson | Director | 26 Jul 2017 | 26 Mar 2018 | British | 79 years |
| John William Bridge | Director | 12 Oct 2013 | 31 Jul 2015 | British | 76 years |
| John William Parker | Director | 25 Mar 1999 | 9 Aug 2002 | British | 99 years |
| Jonathan Edward Madison Jarvis | Director | 19 Mar 1999 | 25 Mar 1999 | British | 54 years |
| Jonathan Edward Madison Jarvis | Secretary | 19 Mar 1999 | 12 Oct 1999 | British | - |
| Joyce Vera James | Director | 25 Mar 1999 | 31 Jul 2000 | British | 93 years |
| Julian Wayne Heley | Director | 27 Sept 2001 | 28 Nov 2002 | British | 52 years |
| Keith Warren Stukins | Director | 25 Nov 2009 | 18 Jul 2012 | British | 86 years |
| Kenneth James Churchill | Director | 5 Jul 2006 | 2 Oct 2009 | British | 71 years |
| Lee Elsworth | Director | 13 Dec 2013 | 18 Jul 2017 | British | 60 years |
| Madhabi Banerjee | Director | 4 Feb 2003 | 1 Jul 2011 | British | 89 years |
| Mandy Jane Wright | Director | 1 Jul 2010 | 1 Jul 2011 | British | 50 years |
| Michael Garvey Day | Director | 15 Sept 1999 | 4 Nov 1999 | British | 94 years |
| Michael George Baker | Director | 31 Jul 2000 | 26 Jul 2001 | British | 80 years |
| Michael George Baker | Director | 21 Aug 2003 | 18 Jul 2012 | British | 80 years |
| Michael Hardy Wood | Director | 1 Feb 2006 | 26 Feb 2014 | British | 82 years |
| Michael Lawrence Simpson | Director | 16 Nov 2011 | 4 May 2016 | English | 85 years |
| Michael Leslie Forrest | Director | 1 Sept 2014 | 28 Jul 2016 | British | 71 years |
| Michal Frederick Shellens | Director | 12 Oct 2012 | 7 May 2015 | British | 81 years |
| Nairn Davidson | Secretary | 12 Jul 2017 | 28 Mar 2018 | - | - |
| Nicholas John Guyatt | Director | 25 Mar 1999 | 2 Sept 1999 | British | 80 years |
| Nicholas John Guyatt | Director | 4 Jul 2013 | 7 May 2015 | British | 80 years |
| Paul Adrian Homewood | Director | 1 Feb 2006 | 31 Oct 2015 | British | 63 years |
| Peter Leonard Ernest Bucknell | Director | 28 Sept 2004 | 12 Jul 2007 | British | 79 years |
| Peter Malcolm Griffith | Director | 26 Jul 2001 | 22 Nov 2005 | British | 83 years |
| Reginald Percy White | Director | 30 Oct 2003 | 1 Apr 2005 | British | 93 years |
| Robert Arthur Dobson | Director | 25 Mar 1999 | 18 Dec 2003 | British | 89 years |
| Robert Ian Cubitt | Director | 24 Feb 2016 | 25 Apr 2017 | English | 53 years |
| Robin Clive Carter | Director | 9 Sept 2015 | 4 May 2016 | British | 75 years |
| Ronald David Downey | Director | 15 Sept 1999 | 5 Apr 2001 | British | 90 years |
| Ronald Frederick Reid | Director | 24 Jun 1999 | 22 Jun 2001 | British | 76 years |
| Rosalyn Margaret Brench | Director | 20 Jan 2016 | 26 Mar 2018 | British | 66 years |
| Ruth Kathleen Haldane | Secretary | 2 Apr 2008 | 18 May 2011 | British | - |
| Ryan Fuller | Director | 5 Jul 2013 | 6 May 2015 | British | 38 years |
| Ryan Fuller | Director | 28 Aug 2015 | 4 May 2016 | British | 38 years |
| Sandra Irene Wilcox | Director | 25 Mar 1999 | 27 Sept 2001 | British | 79 years |
| Shirley Admonita Attwooll | Director | 13 Mar 2009 | 31 Oct 2015 | British | 74 years |
| Susan Margaret Campbell | Director | 25 Mar 1999 | 24 Sept 2002 | British | 77 years |
| Thomas Douglas Sanderson | Director | 31 Jul 2000 | 19 Jun 2003 | British | 54 years |
| Thomas Henry Stevens | Director | 26 Jul 2001 | 1 Oct 2010 | British | 74 years |
| Thomas Henry Stevens | Director | 10 Nov 2010 | 13 May 2012 | British | 74 years |
| Thomas Michael Gaunt | Director | 25 Mar 1999 | 18 Mar 2002 | British | 95 years |
| Timothy Phillip Johnson | Director | 13 Mar 2009 | 31 Mar 2017 | British | 76 years |
| Vera Irene Jackson | Director | 25 Mar 1999 | 14 Sept 2000 | British | 93 years |
| Walter Raleigh King | Director | 25 Mar 1999 | 17 May 2001 | British | 81 years |
| Wendy Margaret Hubbard | Director | 14 Sept 2000 | 29 Sept 2004 | British | 86 years |