| Andrew Philip Rothery | Director | 15 Dec 2015 | 14 Dec 2019 | British | 61 years |
| Angela Marie Clare Mcconville | Director | 11 Dec 2013 | 24 Jan 2020 | British | 51 years |
| Daniel Michael Gerald Moylan | Director | 21 May 2009 | 14 May 2012 | British | 70 years |
| David Charles Maurice Bell | Director | 5 Mar 2008 | 1 Jan 2017 | British | 80 years |
| David Christopher Wetzel | Director | 6 Feb 2008 | 2 Jun 2008 | British | 84 years |
| David Howard Worthington | Director | 11 Mar 2009 | 10 Mar 2015 | British | 70 years |
| David Howard Worthington | Director | 11 Mar 2015 | 7 Jun 2018 | British | 70 years |
| Ellen Howard | Secretary | 6 Feb 2008 | 15 Jul 2011 | Other | - |
| Gareth William Powell | Director | 1 Mar 2022 | 15 Sept 2022 | British | 50 years |
| Glenn Donald Lyons | Director | 3 Sept 2008 | 19 Sept 2012 | British | 58 years |
| Hayaatun Sillem | Director | 5 Mar 2017 | 5 Mar 2020 | British | 50 years |
| Howard Ernest Carter | Secretary | 6 Feb 2008 | 29 Sept 2023 | British | - |
| Howard Paul Collins | Director | 1 Dec 2009 | 31 May 2013 | British | 67 years |
| Janet Mary Vitmayer | Director | 6 Feb 2008 | 24 Mar 2014 | British | 74 years |
| Jeremy Stuart Fraser | Director | 3 Sept 2008 | 2 Sept 2014 | British | 68 years |
| Jeroen Marcel Weimar | Director | 15 May 2009 | 28 Feb 2010 | Dutch | 57 years |
| Judith Anne Naomi Garfield | Director | 3 Sept 2008 | 3 Sept 2011 | British | 60 years |
| Leon Alistair Daniels | Director | 5 Mar 2008 | 5 Mar 2011 | British | 71 years |
| Leon Alistair Daniels | Director | 1 Jun 2016 | 1 Jun 2019 | British | 71 years |
| Linda Margaret Chandler | Director | 12 Nov 2013 | 13 May 2015 | British | 57 years |
| Liz Alana Williams | Director | 30 Mar 2017 | 28 Mar 2024 | British | 58 years |
| Mary Helen Creagh | Director | 14 Jul 2022 | 4 Sept 2024 | British | 59 years |
| Michèle Dix | Director | 5 Nov 2015 | 5 Oct 2021 | British | 71 years |
| Penelope Jane Johnson | Director | 17 Sept 2014 | 16 Sept 2017 | British | 70 years |
| Peter Gerard Hendy | Director | 11 Oct 2012 | 17 Aug 2015 | British | 73 years |
| Peter Gerard Hendy | Director | 5 Nov 2015 | 10 Jul 2024 | British | 73 years |
| Philip Walter Swallow | Director | 13 Jun 2011 | 12 Jun 2020 | British | 69 years |
| Robert Ian Mcmillan Arthurton | Director | 3 Sept 2008 | 27 Jun 2013 | British | 88 years |
| Roger Francis Adrian Cooke | Director | 6 Feb 2008 | 30 Mar 2017 | British | 84 years |
| Samuel Patrick Mullins | Director | 6 Feb 2008 | 8 Aug 2023 | British | 72 years |
| Sandeep Dwesar | Director | 29 Jan 2020 | 30 Jul 2021 | British | 66 years |
| Terence Keith Morgan | Director | 1 Jun 2010 | 31 May 2016 | British | 78 years |
| Timothy Terrence O'toole | Director | 6 Feb 2008 | 30 Apr 2009 | American | 71 years |
| Valerie Todd | Director | 3 Mar 2008 | 11 Jan 2009 | British | 64 years |
| Vernon John Everitt | Director | 1 Jun 2013 | 26 Jan 2022 | British | 63 years |