| Anthony Stewart Goldstone | Director | 28 Aug 1992 | 14 May 1993 | British | 88 years |
| Bernard James Whittle | Director | 28 Aug 1992 | 14 May 1993 | British | 88 years |
| Bernard Marie Terlinden | Director | 28 Feb 1997 | 9 Jul 2001 | Belgian | 72 years |
| Christophe Andre Bernard Chapron | Director | 19 Feb 2007 | 29 Feb 2016 | French | 62 years |
| Colin Charles Burford | Director | 28 Aug 1992 | 14 May 1993 | British | 83 years |
| Colin Charles Burford | Director | 14 May 1993 | 14 Sept 1999 | British | 83 years |
| David Courtenay Palmer-jones | Director | 1 Oct 2008 | 1 Jan 2020 | British | 63 years |
| David Eugene Murray | Secretary | 19 Jan 2000 | 1 Jul 2001 | British | - |
| Elizabeth Anne Smith | Director | 28 Aug 1992 | 14 May 1993 | British | 97 years |
| Elizabeth Jayne Clare Cooper | Secretary | 1 Jul 2001 | 31 Jul 2003 | British | - |
| Florent Thierry Antoine Duval | Director | 1 Feb 2016 | 31 Oct 2021 | French | 50 years |
| Francis Patrick Mcginty | Director | 14 May 1993 | 19 Jan 2000 | British | 77 years |
| Francis Patrick Mcginty | Secretary | 14 May 1993 | 19 Jan 2000 | British | - |
| Gordon Arthur Johnson | Secretary | 28 Aug 1992 | 14 May 1993 | British | - |
| Graham Arthur Mckenna-mayes | Secretary | 31 Jul 2003 | 5 Jan 2009 | British | - |
| Ian Anthony Sexton | Director | 1 Oct 2001 | 19 Feb 2007 | British | 70 years |
| Ian Frederick Goodfellow | Director | 1 Oct 2001 | 31 May 2003 | British | 72 years |
| James Joseph O Donnell | Director | 28 Aug 1992 | 14 May 1993 | British | 79 years |
| James Joseph O Donnell | Director | 14 May 1993 | 28 Feb 1997 | British | 79 years |
| John Entwistle | Director | 28 Aug 1992 | 14 May 1993 | British | 94 years |
| John James West | Director | 28 Aug 1992 | 14 May 1993 | British | 87 years |
| John James West | Director | 14 May 1993 | 18 Oct 2001 | British | 87 years |
| Louise Joyce Ellman | Director | 28 Aug 1992 | 14 May 1993 | British | 81 years |
| Nicola Diane Penney | Director | 28 Aug 1992 | 14 May 1993 | British | 82 years |
| Nicola Diane Penney | Director | 16 Jul 1993 | 28 Feb 1997 | British | 82 years |
| Paul Taylor | Director | 1 Oct 2003 | 13 Nov 2009 | British | 67 years |
| Per-anders Hjort | Director | 31 May 2003 | 1 Oct 2008 | Swedish | 68 years |
| Peter Anthony Neill | Director | 14 Sept 1999 | 8 Jan 2002 | British | 77 years |
| Peter John Gillatt | Director | 7 Jan 2002 | 31 Oct 2006 | British | 66 years |
| Philip Hugh Holland | Director | 1 Oct 2003 | 7 Oct 2013 | British | 66 years |
| Pierre Catlin | Director | 2 Feb 1997 | 8 Feb 2002 | French | 77 years |
| Robert James Wheatley | Director | 28 Feb 1997 | 1 Mar 2002 | British | 83 years |