| Alexander Hamilton Dyce | Director | 8 Nov 2004 | 31 Oct 2005 | British | 74 years |
| Andrew Gilmour Mccaughey | Director | 5 Apr 1993 | 30 Jun 1997 | Canadian | 103 years |
| Andrew Gilmour Mccaughey | Director | 3 Jul 1997 | 22 Dec 1997 | Canadian | 103 years |
| Brian Andrew Marquard | Director | 30 Jan 1998 | 19 Jan 1999 | British | 84 years |
| Brian Andrew Marquard | Secretary | 5 Jun 1998 | 19 Jan 1999 | British | - |
| Cary Allen Depel | Director | 13 May 2002 | 14 Mar 2003 | American | 62 years |
| Christopher Charles Ball | Director | 17 Dec 1997 | 25 Feb 1998 | British | 80 years |
| Christopher John Leon Moorsom | Director | 6 Nov 1998 | 8 Dec 2003 | British | 82 years |
| Christopher Nigel Blatchly | Director | 17 Dec 1997 | 25 Feb 1998 | British | 67 years |
| Christopher Nigel Blatchly | Director | 6 Nov 1998 | 1 Aug 2000 | British | 67 years |
| Christopher Nigel Blatchly | Secretary | 30 Jun 1997 | 5 Jun 1998 | British | - |
| Clive Nicholas Boothman | Director | 19 Dec 2000 | 9 Aug 2001 | British | 70 years |
| David Arthur Rattee | Director | 6 Nov 1992 | 1 Sept 1993 | Canadian | 83 years |
| David Jeffrey Matlin | Director | 30 Jun 1997 | 3 Jul 1997 | American | 64 years |
| David Jonathan Semaya | Director | 1 Apr 2010 | 17 Dec 2012 | American | 63 years |
| David Mclean Currie | Director | 13 Sept 2010 | 15 Feb 2016 | British | 54 years |
| David Phillip Monks | Director | 17 Dec 2003 | 13 Jun 2005 | British | 65 years |
| Douglas Charles Stallard | Director | 28 Jan 2005 | 18 Jul 2005 | British | 73 years |
| Eric Edward Anstee | Director | 19 Jan 1999 | 19 Dec 2000 | British | 74 years |
| Farzan Riza | Director | 7 Feb 2007 | 28 Jul 2010 | American | 60 years |
| Garth Griffin | Director | 25 Feb 1998 | 10 Dec 1998 | South African | 76 years |
| Hans Iain Georgeson | Director | 12 Dec 2005 | 8 Nov 2006 | British | 54 years |
| Hasan Askari | Director | 11 Oct 1999 | 19 Dec 2000 | British | 80 years |
| Hasan Askari | Director | 8 Dec 2003 | 17 Dec 2003 | British | 80 years |
| Henderson Ian Arthur | Director | 28 Jul 2010 | 30 Nov 2012 | British | 65 years |
| Ian Nicholas Sutton | Secretary | 26 Feb 1999 | 24 Oct 2003 | British | - |
| James Oliver Charles Fitzroy | Secretary | 6 Nov 1992 | 31 Mar 1995 | British | - |
| James Roberts Julyan | Director | 28 Jan 2002 | 12 Nov 2004 | British | 73 years |
| John Crombie Henderson | Director | 6 Nov 1992 | 30 Jun 1997 | British | 86 years |
| John Roland Sanders | Director | 5 Jun 1998 | 21 Sept 1998 | British | 82 years |
| Jonathan Saul Sieff | Director | 28 Jan 2002 | 11 Apr 2003 | South African | 59 years |
| Kevin James Carter | Director | 30 Jan 1998 | 30 Sept 2000 | British | 73 years |
| Kim Munson | Secretary | 31 Mar 1995 | 30 Jun 1997 | British | - |
| Mark Andrew Richards | Director | 23 Sept 2013 | 10 Jan 2019 | British | 61 years |
| Mark Anthony Kibblewhite | Director | 13 Jun 2005 | 1 Apr 2010 | British | 63 years |
| Mark Edward Trehearne Davies | Director | 19 Apr 2000 | 19 Dec 2000 | British | 77 years |
| Michael Archibald | Director | 28 Jan 2002 | 28 Apr 2003 | British | 75 years |
| Michael Timothy Bolsover | Director | 28 Jan 2002 | 1 Dec 2004 | British | 72 years |
| Noland Carter | Director | 1 Dec 2004 | 31 May 2005 | American | 64 years |
| Paul Leslie Wood | Director | 6 Jan 2005 | 17 Jun 2005 | British | 72 years |
| Peter Anthony Roger Meyer | Director | 19 Dec 2000 | 31 Aug 2001 | British | 74 years |
| Peter Emery | Director | 11 Dec 2012 | 14 Nov 2013 | British | 56 years |
| Philip Michael Thyer Jones | Director | 30 Jun 1997 | 1 Aug 2000 | British | 83 years |
| Raymond Greenshields | Director | 12 May 2004 | 6 Apr 2006 | Australian | 78 years |
| Richard Oliver Bernays | Director | 2 Feb 1998 | 30 Sept 2000 | British | 82 years |
| Robert Charles Franklin | Director | 5 Apr 1993 | 22 Dec 1997 | Canadian | 89 years |
| Robert Felix Erith | Director | 1 Sept 1993 | 31 Aug 1995 | British | 87 years |
| Robert Graham | Director | 6 Nov 1992 | 5 Apr 1993 | Canadian | 94 years |
| Robert Paul Stockton | Director | 26 Nov 2001 | 1 Jul 2005 | British | 60 years |
| Rupert Felix Hoyle | Director | 5 Jun 1998 | 19 Dec 2000 | British | 86 years |
| Simon John Weld | Director | 22 Mar 2006 | 1 Sept 2010 | British | 61 years |
| Stanley Livingston Vinter | Director | 28 Jan 2002 | 28 Feb 2003 | British | 82 years |
| Stanley Martin David Beck | Director | 6 Nov 1992 | 5 Apr 1993 | Canadian | 91 years |
| Stephen Clark | Director | 19 Apr 2000 | 17 Oct 2003 | British | 77 years |
| Stephen John Turley | Director | 19 Dec 2000 | 15 Jun 2001 | British | 74 years |
| Stephen Roy Slocombe | Secretary | 24 Oct 2003 | 1 Sept 2005 | British | - |
| Thomas John Robert Gordon | Director | 30 Jan 1998 | 23 Oct 2000 | British | 90 years |
| Timothy May | Director | 1 Mar 2002 | 7 Apr 2004 | British | 73 years |
| Vincent John Raimondo | Director | 27 Nov 2003 | 17 Dec 2003 | British | 75 years |
| William John Armstrong Dacombe | Director | 6 Nov 1998 | 19 Dec 2000 | British | 91 years |