| Amelie Marie Breitburd | Director | 16 Dec 2019 | 31 Mar 2020 | French | 57 years |
| Andrew John Purvis | Director | 10 Nov 2006 | 16 Jan 2011 | British | 66 years |
| Andrew Mark Parsons | Director | 2 Aug 2007 | 15 Sept 2010 | British | 61 years |
| Bertrand Poupart-lafarge | Director | 4 Sept 2013 | 14 Jul 2017 | French | 58 years |
| Christopher Graham Bobby | Director | 27 Apr 2015 | 31 Dec 2019 | British | 60 years |
| Francois De Meneval | Director | 7 Jul 2010 | 28 Jun 2011 | French | 63 years |
| George Boden | Director | 7 Jun 2010 | 14 Dec 2011 | British | 80 years |
| Ian Brimecome | Director | 9 Apr 2009 | 6 Mar 2013 | British | 73 years |
| Ian Graham Story | Director | 9 Apr 2009 | 20 Jan 2011 | British | 63 years |
| Ian Robinson | Director | 18 Jun 2008 | 12 Jul 2010 | British | 57 years |
| Jean Paul Dominique Louis Drouffe | Director | 9 Sept 2010 | 31 Aug 2013 | French | 51 years |
| Jeremy Peter Small | Secretary | 15 Sept 2006 | 16 Jun 2020 | British | - |
| John Robert Simmonds | Director | 15 Sept 2006 | 20 Jan 2011 | British | 69 years |
| Kirsten Ann Beggs | Secretary | 13 Jul 2020 | 28 Feb 2023 | - | - |
| Nicolas Jean Marie Denis Moreau | Director | 9 Apr 2009 | 30 Sept 2010 | French | 61 years |
| Paul James Evans | Director | 15 Sept 2006 | 30 Jan 2015 | British | 61 years |
| Peter John Hubbard | Director | 8 Jan 2007 | 11 Apr 2008 | British | 71 years |
| Philip John Anderson | Director | 9 Apr 2009 | 20 Jan 2011 | British | 62 years |
| Philippe Louis Herbert Maso Y Guell Rivet | Director | 10 Nov 2006 | 2 Mar 2011 | French | 60 years |
| Raymond Francis Pierce | Director | 16 Apr 2009 | 3 Nov 2009 | British | 80 years |
| Stuart Charles Reid | Director | 9 Apr 2009 | 20 Jan 2011 | British | 61 years |
| Timothy Hugh Southcombe Trotter | Director | 9 Apr 2009 | 31 Dec 2010 | British | 67 years |