| Arthur Leslie Owen | Director | 20 Sept 2013 | 22 May 2019 | United Kingdom | 77 years |
| Catherine Jane Keers | Director | 20 Sept 2013 | 28 Feb 2018 | British | 61 years |
| Donald Hood Brydon | Director | 6 Sept 2013 | 31 Aug 2015 | British | 81 years |
| Emily Shiu Wai Pang | Secretary | 1 Feb 2014 | 26 Jun 2015 | British | - |
| Ingrid Ebner | Director | 28 Jun 2023 | 2 Jun 2025 | German | 60 years |
| Janice May Babiak | Director | 20 Sept 2013 | 29 Apr 2014 | American / British | 68 years |
| John Murray Allan | Director | 20 Sept 2013 | 30 Apr 2015 | British | 78 years |
| Jonathan Varley Millidge | Secretary | 6 Sept 2013 | 31 Jan 2014 | - | - |
| Jourik Hooghe | Director | 1 Jun 2022 | 2 Jun 2025 | Belgian | 49 years |
| Keith Williams | Director | 1 Jan 2018 | 2 Jun 2025 | British | 70 years |
| Kulbinder Kaur Dosanjh | Secretary | 27 Jun 2015 | 1 May 2019 | - | - |
| Lynne Peacock | Director | 1 Nov 2019 | 2 Jun 2025 | British | 73 years |
| Maria Juana Da Cunha Da Silva | Director | 22 May 2019 | 2 Jun 2025 | British | 63 years |
| Mark Amsden | Secretary | 1 May 2019 | 30 Sept 2024 | - | - |
| Mark Vincent Higson | Director | 20 Sept 2013 | 24 Jul 2014 | British | 70 years |
| Matthew John Lester | Director | 6 Sept 2013 | 20 Jul 2017 | British | 63 years |
| Michael Alan Findlay | Director | 22 May 2019 | 2 Jun 2025 | British | 58 years |
| Michael John Jeavons | Director | 11 Jan 2021 | 18 Jan 2024 | British | 57 years |
| Moya Marguerite Greene | Director | 6 Sept 2013 | 19 Jul 2018 | Canadian | 72 years |
| Nicholas Wenham Horler | Director | 20 Sept 2013 | 28 Feb 2017 | British | 67 years |
| Orna Gabrielle Ni-chionna | Director | 20 Sept 2013 | 18 Jul 2019 | Irish | 70 years |
| Paul Colbeck Murray | Director | 20 Sept 2013 | 19 Jul 2018 | British | 65 years |
| Peter James Long | Director | 18 Jun 2015 | 19 Sept 2018 | British | 74 years |
| Rico Back | Director | 1 Jun 2018 | 15 May 2020 | German | 72 years |
| Rita Elizabeth Griffin | Director | 1 Dec 2016 | 20 Jul 2022 | American | 63 years |
| Sarah Elizabeth Mary Hogg | Director | 1 Oct 2019 | 2 Jun 2025 | British | 80 years |
| Shashi Verma | Director | 29 Sept 2021 | 2 Jun 2025 | Indian | 55 years |
| Simon Thompson | Director | 1 Nov 2017 | 12 May 2023 | British | 60 years |
| Stuart Campbell Simpson | Director | 20 Jul 2017 | 11 Jan 2021 | British | 59 years |
| Sue Rachel Whalley | Director | 1 Jun 2018 | 7 Nov 2018 | British | 62 years |
