| Albert F Tyndall Jr | Secretary | 8 Jun 1994 | 24 Jan 1996 | American | - |
| Christopher David Sweatman | Director | 12 Dec 2005 | 16 Jul 2008 | British | 51 years |
| David Matthew Bird | Director | 7 Nov 2019 | 13 May 2021 | British | 43 years |
| Dominic James Hearth | Secretary | 10 May 2004 | 7 Nov 2019 | British | - |
| Dominic Paul Keating | Director | 31 Oct 2003 | 12 Dec 2005 | British | 58 years |
| Dwight Craig Kuhns | Director | 8 Jun 1994 | 17 May 1996 | American | 76 years |
| Gordon Alan Macdougall | Director | 25 Jun 2009 | 29 Jul 2016 | British | 56 years |
| Ian David Mays | Director | 10 Feb 1997 | 31 Oct 2003 | British | 73 years |
| John D'ardenne | Director | 29 Mar 1994 | 29 Mar 1994 | British | 74 years |
| John D'ardenne | Secretary | 29 Mar 1994 | 4 Feb 1997 | British | - |
| John Douglas Kuhns | Director | 8 Jun 1994 | 10 Feb 1997 | American | 76 years |
| Julia Katharine Rhodes | Director | 16 Jul 2008 | 26 Mar 2010 | British | 55 years |
| Kevin Charles Jenden | Director | 7 Apr 1994 | 25 Sept 1995 | British | 76 years |
| Laura Hoddell | Director | 14 Nov 2018 | 7 Nov 2019 | British | 37 years |
| Michael Broughton Anderson | Director | 21 Sept 1998 | 31 Oct 2003 | British | 71 years |
| Michael Harvey Best | Director | 8 Jun 1994 | 17 May 1996 | American | 76 years |
| Michael Robert O'neill | Secretary | 13 Feb 1997 | 10 May 2004 | British | - |
| Michael Sumner Babcock | Director | 29 Mar 1994 | 8 Jun 1994 | British | 61 years |
| Milan Dave | Director | 14 Nov 2018 | 7 Nov 2019 | British | 50 years |
| Miles Colin Shelley | Director | 4 Sept 1998 | 21 Sept 1998 | British | 65 years |
| Paul Stephen Latham | Director | 7 Nov 2019 | 19 Dec 2022 | British | 70 years |
| Paul Walker | Director | 16 Jul 2008 | 23 Nov 2010 | British | 54 years |
| Paula Anne Margaret Batchelor | Director | 14 Nov 2018 | 7 Nov 2019 | British | 51 years |
| Richard Paul Russell | Director | 23 Jan 2017 | 14 Nov 2018 | British | 45 years |
| Richard Paul Russell | Director | 23 Oct 2019 | 7 Nov 2019 | British | 45 years |
| Robert Anthony Woolf | Director | 13 Feb 1997 | 4 Sept 1998 | British | 76 years |
| Robert John William Wotherspoon | Director | 10 Feb 1997 | 13 Feb 1997 | British | 59 years |
| Robert John William Wotherspoon | Secretary | 10 Feb 1997 | 13 Feb 1997 | British | - |
| Ross Frazer Finlay | Director | 23 Nov 2010 | 30 Aug 2013 | British | 55 years |
| Russell Alan Farnhill | Director | 30 Aug 2013 | 10 Jun 2016 | British | 51 years |
| Stephen John Tivadar Balint | Director | 31 Oct 2003 | 25 Jun 2009 | British | 72 years |
| Steven William Hughes | Director | 26 Mar 2010 | 7 Nov 2019 | British | 54 years |
| Stuart Patrick Lunn | Director | 23 Oct 2019 | 7 Nov 2019 | British | 45 years |
| Vitold Jordan | Director | 4 Feb 1997 | 10 Feb 1997 | Canadian | 72 years |
| Vitold Jordan | Secretary | 4 Feb 1997 | 10 Feb 1997 | Canadian | - |
| William Douglas Wright | Director | 22 Jan 2008 | 25 Jun 2009 | British | 66 years |