| Charles Baird Morrison | Director | 8 May 2008 | 30 Dec 2016 | British | 75 years |
| Edmund Alfred Lazarus | Director | 19 Feb 2008 | 20 Sept 2016 | British | 58 years |
| Edmund James Aldous Buckley | Director | 5 Mar 2008 | 28 Apr 2008 | British | 48 years |
| Ian Vincent Cusden | Director | 1 Oct 2018 | 23 Dec 2019 | British | 69 years |
| Ian Vincent Cusden | Secretary | 7 May 2008 | 23 Dec 2019 | British | - |
| Ilaria Evans | Secretary | 15 Sept 2022 | 20 Nov 2023 | - | - |
| James Michael Arnold | Director | 26 Sept 2016 | 1 Jan 2023 | British | 61 years |
| James Michael Hobson | Director | 15 Sept 2022 | 31 Oct 2024 | British | 49 years |
| James Robert Winnicott | Director | 1 Oct 2018 | 28 Feb 2023 | British | 58 years |
| John Mark Edwards | Director | 15 Sept 2022 | 27 Feb 2023 | Welsh | 60 years |
| Jonathan Mussellwhite | Director | 19 Feb 2008 | 28 May 2013 | British | 59 years |
| Jonathan Mussellwhite | Secretary | 19 Feb 2008 | 7 May 2008 | British | - |
| Malik Johannes Vorderwuelbecke | Director | 6 May 2008 | 29 Sept 2008 | German | 46 years |
| Martin Geoffrey Beesley | Director | 4 Mar 2009 | 22 Oct 2021 | British | 60 years |
| Nayen Pankhania | Director | 28 Sept 2010 | 12 Dec 2011 | British | 45 years |
| Olivier Morali | Director | 8 May 2008 | 20 Sept 2016 | French | 54 years |
| Patrick Louis Eisenchteter | Director | 1 Dec 2011 | 20 Sept 2016 | French | 60 years |
| Rupert King | Director | 5 Mar 2008 | 28 Apr 2008 | British | 63 years |
| Thomas Rupert King | Director | 8 May 2008 | 29 Sept 2008 | British | 63 years |
| William James Cooper | Director | 23 Dec 2019 | 15 Sept 2022 | British | 53 years |
| William James Cooper | Secretary | 23 Dec 2019 | 15 Sept 2022 | - | - |
