| Adrian Gareth Morris | Director | 28 Dec 1992 | 14 Apr 1993 | British | 78 years |
| Alexander Michael Comba | Director | 14 Apr 1993 | 22 Dec 2014 | British | 73 years |
| Alexander Michael Comba | Secretary | 18 Jan 2008 | 22 Dec 2014 | British | - |
| Andrew Michael Ridley-barker | Director | 21 Mar 2012 | 3 Oct 2014 | British | 58 years |
| Andrew William Percival | Director | 29 Mar 2012 | 31 May 2016 | British | 54 years |
| Bruno Michel Dupety | Director | 13 Jan 2015 | 2 Aug 2019 | French | 70 years |
| David John Finch | Director | 6 Dec 2005 | 19 Jan 2016 | British | 63 years |
| David William Bowler | Director | 17 Feb 2016 | 31 Jul 2018 | British | 81 years |
| David William Bowler | Director | 6 Dec 2005 | 19 Oct 2007 | British | 81 years |
| David William Bowler | Secretary | 31 Dec 1996 | 19 Nov 1997 | British | - |
| David William Bowler | Secretary | 27 Nov 2002 | 9 Oct 2007 | British | - |
| Eric Marie Michel Zeller | Director | 31 Aug 1993 | 6 Dec 2005 | French | 71 years |
| Gilles Bruno Marie Godard | Director | 24 Aug 2020 | 30 Sept 2022 | French | 58 years |
| Graham Lambert | Director | 28 Jan 2019 | 18 Jul 2025 | British | 57 years |
| Guy Dorsner | Director | 19 Nov 1997 | 30 Mar 2000 | French | 76 years |
| Jean-pierre Pierre Bonnet | Director | 13 Jan 2015 | 7 Jan 2019 | British | 70 years |
| Jerome Maurice Stubler | Director | 20 Aug 2019 | 24 Aug 2020 | French | 63 years |
| John Henry Duncan | Director | 2 Nov 1998 | 24 May 2000 | British | 78 years |
| John Oliver Mark Stanion | Director | 5 Oct 1999 | 24 May 2000 | British | 74 years |
| John Oliver Mark Stanion | Director | 2 Mar 2014 | 29 Sept 2014 | British | 74 years |
| Jonathan Richard Michael Cliff | Director | 28 Dec 1992 | 31 Aug 1993 | British | 72 years |
| Kay Lisa Fraser | Secretary | 19 Nov 1997 | 27 Nov 2002 | British | - |
| Michael John Needham | Director | 19 Nov 1997 | 30 Mar 1998 | British | 83 years |
| Paul Anthony Davies | Secretary | 28 Dec 1992 | 31 Dec 1996 | British | - |
| Paul Joseph Giles | Director | 6 Oct 1998 | 24 May 2000 | British | 66 years |
| Paul Richard Carl Nowell | Director | 2 Apr 1998 | 5 Oct 1999 | British | 76 years |
| Paul Rodrigues Neto | Director | 29 Mar 2012 | 7 Apr 2016 | British | 56 years |
| Paul Tuplin | Director | 26 Mar 2012 | 3 Oct 2014 | British | 71 years |
| Ruth Elizabeth Watts | Secretary | 9 Oct 2007 | 18 Jan 2008 | British | - |
| Terence Ryan | Director | 18 Jul 2000 | 23 May 2001 | British | 69 years |