| Adrian Neil Peacock | Director | 28 Jan 2009 | 8 Jul 2009 | British | 51 years |
| Amit Rishi Jaysukh Thakrar | Director | 29 Mar 2022 | 16 Mar 2023 | British | 39 years |
| Andrew David Clapp | Director | 28 Mar 2019 | 26 Aug 2021 | British | 51 years |
| Belinda Faith Knox | Director | 14 Aug 2014 | 5 Oct 2020 | British | 54 years |
| Charles George Alexander Mcleod | Director | 12 Aug 2016 | 12 Jul 2018 | British | 63 years |
| Charles Olivier Andre Dupont | Director | 7 Jul 2006 | 1 Oct 2008 | French | 73 years |
| Claire Houry | Director | 13 Oct 2006 | 30 Jun 2008 | French | 57 years |
| Colin Michael Exford | Director | 26 Sept 2006 | 28 Jan 2009 | British | 68 years |
| Colin Michael Exford | Director | 15 Jan 2010 | 19 Mar 2013 | British | 68 years |
| Eiichiro Higashiyama | Director | 16 Mar 2015 | 24 Jul 2017 | Japanese | 56 years |
| Florent Thierry Antoine Duval | Director | 13 Dec 2016 | 1 Dec 2021 | French | 50 years |
| Gayayri Desai | Director | 8 Jul 2009 | 15 Jan 2010 | British | 51 years |
| Gershon Daniel Cohen | Director | 21 Mar 2013 | 1 May 2017 | British | 62 years |
| Graham Arthur Mayes | Secretary | 7 Jul 2006 | 14 Aug 2006 | British | - |
| Graham Arthur Mckenna-mayes | Director | 14 Aug 2006 | 28 Jun 2021 | British | 58 years |
| Guy Howard Cato | Director | 26 Mar 2010 | 19 Mar 2013 | British | 55 years |
| Halim Bulent Artuc | Director | 5 Oct 2020 | 31 Oct 2023 | Turkish | 44 years |
| Ian Anthony Sexton | Director | 15 Feb 2006 | 31 Mar 2020 | British | 70 years |
| Jeffrey Michael Thornton | Director | 13 Oct 2006 | 21 Dec 2006 | British | 73 years |
| Joan Knight | Secretary | 15 Feb 2006 | 7 Jul 2006 | British | - |
| John Brian Marshall | Director | 19 Mar 2013 | 16 Mar 2015 | British | 70 years |
| John James Scanlon | Director | 1 Oct 2008 | 19 Jan 2013 | Irish | 57 years |
| Jon Morton-smith | Director | 30 Jun 2008 | 19 Mar 2013 | British | 75 years |
| Joseph Mark Linney | Director | 26 Aug 2021 | 29 Mar 2022 | British | 68 years |
| Kenneth John Simpson | Director | 1 May 2017 | 6 Dec 2017 | British | 61 years |
| Kevin Brown | Director | 12 Aug 2016 | 6 Dec 2017 | British | 50 years |
| Mark Hedley Thompson | Director | 7 Mar 2014 | 13 Dec 2016 | British | 53 years |
| Masashi Kanai | Director | 1 Sept 2021 | 1 Apr 2023 | Japanese | 54 years |
| Michael William Weston | Director | 12 Jul 2018 | 21 Dec 2018 | British | 62 years |
| Nicholas Tommy Cole | Director | 19 Mar 2013 | 12 Aug 2016 | British | 48 years |
| Nicholas Tommy Cole | Director | 6 Dec 2017 | 28 Mar 2019 | British | 48 years |
| Paul Gavin | Director | 19 Jan 2013 | 7 Mar 2014 | British | 60 years |
| Philip Peter Ashbrook | Director | 28 Mar 2019 | 21 Dec 2022 | British | 66 years |
| Phillip James Hall | Director | 21 Dec 2006 | 28 Jan 2009 | British | 57 years |
| Salvatore Santoro | Director | 28 Jan 2009 | 8 Jul 2009 | Italian | 49 years |
| Tsuneharu Hibino | Director | 19 Mar 2013 | 14 Aug 2014 | Japanese | 50 years |
| William Iain Watson | Director | 8 Jul 2009 | 26 Mar 2010 | British | 57 years |
| Yuji Suzuki | Director | 24 Jul 2017 | 1 Sept 2021 | Japanese | 56 years |