| Achal Prakash Bhuwania | Director | 23 Jan 2020 | 2 Feb 2023 | British | 47 years |
| Aisha Hamid | Director | 2 Feb 2023 | 22 Oct 2024 | British | 34 years |
| Alex Constantinos Naftis | Secretary | 4 Jul 2024 | 2 Jul 2025 | - | - |
| Andrew James Dench | Director | 29 Jan 2015 | 5 May 2015 | British | 57 years |
| Armando Andres Pena | Director | 22 Nov 2007 | 25 Nov 2008 | American | 81 years |
| Beatrice Helene Baker Pessoa De Araujo | Director | 22 Oct 2024 | 21 Mar 2025 | Portuguese | 65 years |
| Carol Thompson | Director | 24 Apr 2009 | 2 Sept 2010 | British | 64 years |
| Chantal Benedicte Forrest | Secretary | 12 Jun 2009 | 31 Mar 2014 | British | - |
| Christine Oreilly | Director | 21 Apr 2008 | 25 Nov 2008 | Australian | 65 years |
| Damian Christopher Rigney | Director | 15 Nov 2007 | 21 Apr 2008 | Australian | 56 years |
| Daniel Vincent Latham | Director | 15 Nov 2007 | 25 Nov 2008 | Australian | 60 years |
| David Graham Brocksom | Secretary | 30 Sept 2021 | 25 May 2023 | - | - |
| David Graham Brocksom | Director | 5 Oct 2015 | 25 May 2023 | British | 66 years |
| David Mark Hannon | Secretary | 27 Mar 2024 | 4 Jul 2024 | - | - |
| Fukashi Kumura | Director | 1 Apr 2020 | 7 Jul 2022 | Japanese | 59 years |
| Genping Pan | Director | 23 Jan 2020 | 22 Oct 2024 | Chinese | 60 years |
| Geoffrey Scott Chatas | Director | 13 Mar 2008 | 25 Nov 2008 | United States | 63 years |
| Hailin Yu | Director | 1 Apr 2020 | 22 Oct 2024 | Chinese | 48 years |
| Harold Hutchinson | Director | 22 Oct 2024 | 21 Mar 2025 | British | 68 years |
| Ian Thomas Smyth | Director | 5 Sept 2022 | 2 Jul 2025 | British | 56 years |
| Jason Demetrious Zibarras | Director | 22 Nov 2007 | 26 Aug 2008 | British | 53 years |
| Jeffrey Todd Altman | Director | 21 Apr 2008 | 25 Nov 2008 | American | 64 years |
| Jennie Patricia Carter | Secretary | 25 May 2023 | 27 Mar 2024 | - | - |
| John E Lynch | Director | 25 Jul 2018 | 10 Sept 2019 | American | 56 years |
| Kaoru Fukushima | Director | 1 Apr 2020 | 7 Jul 2022 | Japanese | 53 years |
| Karen O'donnell | Secretary | 1 Apr 2014 | 17 Mar 2017 | - | - |
| Makoto Murata | Director | 28 Jul 2022 | 2 Jul 2025 | Japanese | 47 years |
| Malcolm Graeme Sugden | Director | 25 Nov 2008 | 12 Jun 2009 | British | 69 years |
| Marcus Logan Ayre | Director | 15 Nov 2007 | 21 Apr 2008 | British | 52 years |
| Marcus Logan Ayre | Secretary | 15 Nov 2007 | 21 Apr 2008 | British | - |
| Mark Joseph Scarsella | Director | 10 Sept 2019 | 12 Dec 2019 | Italian | 42 years |
| Masahide Yamada | Director | 7 Jul 2022 | 2 Jul 2025 | Japanese | 56 years |
| Michael Gerald Mccallion | Director | 13 Aug 2010 | 31 Aug 2010 | Irish | 58 years |
| Michael Gerald Mccallion | Director | 2 Sept 2010 | 24 May 2013 | Irish | 58 years |
| Michael Nagle | Director | 22 Nov 2007 | 25 Nov 2008 | British | 74 years |
| Michiko Hara | Director | 4 Jul 2024 | 21 Mar 2025 | Japanese | 52 years |
| Mitsuo Wada | Director | 31 Jul 2023 | 21 Mar 2025 | Japanese | 53 years |
| Niall Patrick Mills | Director | 25 Jul 2018 | 12 Dec 2019 | British | 58 years |
| Paul Richard Taylor | Director | 26 Jul 2010 | 25 Jan 2011 | British | 60 years |
| Paul Royce Bircham | Director | 2 Aug 2010 | 23 Aug 2010 | British | 56 years |
| Peter Bartholomew O'flaherty | Director | 1 Apr 2020 | 22 Oct 2024 | Irish | 53 years |
| Peter Richard Emery | Director | 27 May 2016 | 4 Sept 2022 | British | 64 years |
| Richard Somerville | Secretary | 17 Mar 2017 | 30 Sept 2021 | - | - |
| Robert James O'malley | Director | 1 Jul 2009 | 31 Jul 2009 | British | 60 years |
| Robert James O'malley | Director | 7 Mar 2013 | 29 Jan 2015 | British | 60 years |
| Robert James O'malley | Director | 5 May 2015 | 5 Oct 2015 | British | 60 years |
| Shinichiro Sumitomo | Director | 27 Jan 2020 | 7 Jul 2022 | Japanese | 55 years |
| Sion Laurence Jones | Director | 3 Oct 2019 | 22 Oct 2024 | British | 52 years |
| Stephen Johnson | Director | 25 Nov 2008 | 27 May 2016 | British | 66 years |
| Surinder Singh Toor | Director | 26 Aug 2008 | 25 Nov 2008 | British | 54 years |
| Takeshi Tanaka | Director | 25 Jun 2020 | 31 Jul 2023 | Japanese | 54 years |
| Tatsuhiro Tamura | Director | 7 Jul 2022 | 4 Jul 2024 | Japanese | 61 years |
| Yamabayashi Yoshihiro | Director | 3 Oct 2019 | 1 Apr 2020 | Japanese | 64 years |
| Yoichi Hamada | Director | 1 Apr 2020 | 25 Jun 2020 | Japanese | 56 years |