| Alice Read | Secretary | 6 Jul 2005 | 8 May 2006 | British | - |
| Alistair Nigel Duncan Jones | Director | 16 Oct 2011 | 31 Dec 2015 | British | 61 years |
| Anna Louise Mcandrew | Director | 2 Jul 2020 | 23 Apr 2021 | British | 58 years |
| Arjun Kumar Bambawale | Director | 9 Jun 2009 | 20 Sept 2011 | Indian | 64 years |
| Bryan Frank Elliott | Director | 1 Oct 1998 | 15 May 2002 | British | 75 years |
| Christine Anne Coe | Director | 25 Jun 2003 | 1 Feb 2005 | British | 72 years |
| Christophe Decker | Director | 1 Feb 2021 | 31 May 2023 | Belgian | 59 years |
| Christopher Derick Knowles | Director | 16 Oct 2011 | 1 Oct 2014 | British | 61 years |
| Claude Corneille Quintus | Director | 3 Aug 2015 | 20 Mar 2023 | Luxembourger | 59 years |
| David Thorne | Director | 30 Sept 2014 | 31 Mar 2015 | British | 55 years |
| Donald Thomas Smith | Director | 1 Oct 1998 | 1 Dec 2003 | British | 76 years |
| Emma Suzanne Ferley | Secretary | 19 Aug 2010 | 8 Feb 2012 | - | - |
| Frances Julie Niven | Secretary | 23 Jul 2004 | 6 Jul 2005 | British | - |
| Frederick Albert Whitehorn | Director | 1 Oct 1998 | 15 Jun 2000 | British | 72 years |
| Gary Woolfries | Director | 26 Jun 2002 | 16 Mar 2007 | British | 60 years |
| George William Bayer | Secretary | 5 Oct 2007 | 12 Sept 2008 | Other | - |
| Gerard Alexandre Kayser | Director | 20 Mar 2023 | 25 Apr 2024 | Luxembourger | 62 years |
| Hauwa Kassim-momodu | Secretary | 9 Sept 2009 | 21 May 2010 | Other | - |
| Helena Margaret Clarke | Director | 1 Oct 1998 | 4 Sept 2000 | British | 65 years |
| James Keith Barton | Director | 14 Dec 1993 | 17 Jul 1995 | British | 78 years |
| James Keith Barton | Secretary | 22 Feb 1994 | 17 Jul 1995 | British | - |
| James Michael Martin | Director | 26 Jun 2002 | 30 Nov 2007 | British | 66 years |
| James Phillips | Director | 25 Jun 2003 | 5 Apr 2007 | British | 75 years |
| Johann Ledecq | Director | 26 Apr 2024 | 30 Apr 2025 | Belgian | 47 years |
| John Robin Skae | Director | 22 Feb 1993 | 14 Dec 1993 | British | 88 years |
| Kenneth Henry Gordon Coales | Director | 17 Jul 1995 | 1 Oct 1998 | British | 80 years |
| Kevin Oconnor | Director | 1 Oct 1998 | 5 Nov 1998 | British | 66 years |
| Larissa Wilson | Secretary | 16 Sept 2015 | 8 Mar 2017 | - | - |
| Leire Zirion Corres | Director | 20 Mar 2023 | 30 Apr 2024 | Spanish | 55 years |
| Lorna Youssouf | Secretary | 8 Mar 2017 | 21 Sept 2018 | - | - |
| Malcolm Silvio | Director | 25 Nov 2019 | 21 Dec 2020 | Maltese | 51 years |
| Mark Ian Irwin | Director | 1 Dec 2003 | 1 Oct 2014 | British | 69 years |
| Mark Ian Irwin | Director | 2 Mar 2016 | 12 Dec 2016 | British | 69 years |
| Mark Raymond Andrews | Director | 26 Jun 2002 | 20 Sept 2011 | British | 73 years |
| Mark Vivian Pearce | Secretary | 19 Dec 2002 | 23 Jul 2004 | British | - |
| Michael Anthony Mcpolin | Director | 1 Jul 2009 | 16 Oct 2011 | British | 60 years |
| Michael May | Director | 30 Sept 2014 | 11 Feb 2019 | British,french | 68 years |
| Nicholas Maton | Director | 11 Feb 2019 | 25 Nov 2019 | British | 57 years |
| Nicholas Titmuss | Director | 12 Dec 2016 | 28 Feb 2020 | British | 55 years |
| Nicola Carol Hopkins | Secretary | 20 Sept 2019 | 25 Feb 2022 | - | - |
| Nigel Barker | Director | 22 Feb 1993 | 1 Oct 1998 | British | 83 years |
| Nigel Barker | Secretary | 22 Feb 1993 | 4 May 1993 | British | - |
| Nigel Howard Fielding | Director | 30 Sept 2014 | 27 Apr 2015 | British | 64 years |
| Nigel Wood | Director | 1 Feb 2005 | 21 Apr 2009 | British | 65 years |
| Pauline Louise Mcquillan | Secretary | 8 May 2006 | 5 Oct 2007 | British | - |
| Philip William Richardson | Director | 1 Oct 1998 | 26 Jun 2002 | British | 66 years |
| Richard William Quin | Director | 26 May 1995 | 4 Jul 1996 | Irish | 85 years |
| Robert Hugh Musgrove | Secretary | 6 Aug 1999 | 19 Dec 2002 | Other | - |
| Robert Hugh Musgrove | Secretary | 26 Oct 2006 | 5 Oct 2007 | Other | - |
| Robert James Hinton | Secretary | 8 Feb 2012 | 20 Feb 2015 | - | - |
| Romana Lewis | Secretary | 21 Sept 2018 | 20 Sept 2019 | - | - |
| Sarah Caroline Gott | Secretary | 1 Oct 2008 | 9 Sept 2009 | British | - |
| Saverio Fiorino | Director | 1 Apr 2015 | 30 Sept 2019 | Italian | 56 years |
| Shaun Kevin Bryant | Secretary | 17 Jul 1995 | 6 Aug 1999 | British | - |
| Stephen Charles Crockford | Director | 1 Oct 1998 | 26 Jun 2002 | British | 75 years |
| Stephen Walter Gamble | Director | 26 Jun 2002 | 25 Jun 2003 | British | 76 years |
| Terry Frederick Cox | Director | 22 Feb 1993 | 26 May 1995 | British | 91 years |