| Adrian Graham Mercer | Director | 30 Jul 2018 | 10 Apr 2020 | British | 57 years |
| Alastair Gregor Turner | Director | 9 May 1995 | 23 Nov 2000 | British | 78 years |
| Barbara Boyewska | Secretary | 9 Apr 2008 | 21 Jan 2011 | British | - |
| Bruno Pierre Jean Marie Lacamp | Director | 9 May 1995 | 14 Feb 2000 | British | 76 years |
| David Graham Walton | Director | 25 Jan 2010 | 19 Sept 2011 | British | 63 years |
| David Richard Neil Grimwood | Director | 4 Jul 2012 | 12 Jul 2018 | British | 51 years |
| David William Alexander | Director | 3 Aug 2005 | 31 Dec 2007 | British | 80 years |
| David Wright | Director | 10 Jan 2001 | 6 Mar 2015 | British | 71 years |
| Delphine Gilbert | Director | 25 Jan 2018 | 22 Jun 2021 | French | 41 years |
| Duncan John Lucas Bates | Director | 29 Sept 2009 | 24 Apr 2010 | British | 68 years |
| Duncan John Lucas Bates | Secretary | 14 Nov 1997 | 10 Jan 2001 | British | - |
| Elaine Margaret Aitken | Secretary | 10 Oct 2013 | 30 Nov 2021 | - | - |
| Elvire Sachiko Matsumura | Director | 8 May 2013 | 30 Oct 2017 | French | 46 years |
| Francois Darley | Director | 5 Sept 1996 | 1 Nov 2004 | French | 76 years |
| Frederic Devos | Director | 9 Apr 2008 | 25 Jan 2012 | French | 62 years |
| Jack Jeffery | Director | 6 Apr 1992 | 17 Jul 2000 | British | 96 years |
| Jean Claude Banon | Director | 6 Apr 1992 | 3 Aug 2005 | French | 78 years |
| John James Bryan | Director | 8 May 2013 | 12 Jul 2018 | British | 61 years |
| Joseph Bernard Mangion | Director | 5 Sept 1996 | 30 Nov 2003 | British | 68 years |
| Julia Cherrett | Director | 29 Sept 2009 | 3 Jul 2012 | British | 63 years |
| Keith William Taylor | Secretary | 31 Jul 2004 | 31 Mar 2008 | British | - |
| Khalid Iqbal Puri | Secretary | 5 May 1995 | 14 Nov 1997 | British | - |
| Louise Strain | Secretary | 11 Feb 2011 | 30 Aug 2013 | - | - |
| Michael Joseph Edward Butcher | Director | 9 Apr 2008 | 30 Apr 2012 | British | 75 years |
| Nigel John Paterson | Director | 10 Nov 2011 | 29 Dec 2017 | British | 69 years |
| Pascal Henri Arnac | Director | 6 Apr 1992 | 9 May 1995 | French | 78 years |
| Peter William Darby | Director | 10 Jan 2001 | 1 Nov 2004 | British | 77 years |
| Philippe Roger Louis Guitard | Director | 29 Sept 2009 | 29 Sept 2009 | French | 66 years |
| Rees Griffiths | Director | 8 Aug 1995 | 1 Jul 1996 | British | 79 years |
| Rees Griffiths | Secretary | 6 Apr 1992 | 5 May 1995 | British | - |
| Richard John Dean | Director | 29 Sept 2009 | 10 Nov 2011 | British | 73 years |
| Rodney Grahame Castle | Secretary | 10 Jan 2001 | 31 Jul 2004 | British | - |
| Russell Steven Bright | Director | 29 Sept 2009 | 17 Nov 2010 | British | 64 years |
| Stephen Nigel Jennings | Director | 22 Jun 2015 | 31 May 2017 | British | 64 years |
| Terence Leslie Chatfield | Director | 6 Feb 1997 | 5 Jan 1998 | British | 80 years |
| Timothy Samuel Chapman Gross | Director | 15 May 2002 | 1 Nov 2004 | British | 77 years |
| Tracy Jayne Knipe | Director | 30 Jul 2018 | 27 Aug 2024 | British | 58 years |
| Xavier Aragon | Director | 1 Oct 2018 | 7 Oct 2020 | French | 56 years |