| Adrian Roger Wyatt | Director | 12 Jul 1999 | 15 Jan 2004 | British | 78 years |
| Angus Alexander Dodd | Director | 27 Jun 2016 | 7 Nov 2019 | British | 59 years |
| Charlotte Ind Eastwood | Secretary | 23 Jul 2002 | 25 Oct 2004 | British | - |
| Daniel Mark Greenslade | Director | 31 Mar 2015 | 26 May 2015 | British | 50 years |
| David Andrew Henderson Williams | Director | 23 Jul 1995 | 12 Jul 1999 | British | 68 years |
| David Nicholas Gavaghan | Director | 10 May 2010 | 16 Feb 2012 | British | 67 years |
| David Patrick Kiernan | Director | 23 Jul 1992 | 23 Oct 1998 | Irish | 78 years |
| David Patrick Kiernan | Secretary | 23 Jul 1992 | 23 Oct 1998 | Irish | - |
| Edward Louis Erdman | Director | 23 Jul 1992 | 4 Nov 1997 | British | 120 years |
| Edward Stratford Dugdale | Director | 12 Jul 1999 | 22 Mar 2002 | British | 67 years |
| Gail Robson Skeete | Secretary | 27 Oct 1999 | 30 May 2000 | British | - |
| James Robert Hamilton Stubber | Director | 8 Mar 2004 | 17 Feb 2006 | British | 72 years |
| John Robert Sotheby Boas | Director | 23 Jul 1992 | 12 Jul 1999 | British | 89 years |
| John Stuart Gamble | Director | 23 Jul 1992 | 30 Sept 1994 | British | 87 years |
| Maxwell David Shaw James | Director | 27 Mar 2013 | 27 Jun 2016 | British | 59 years |
| Michael Ben Jenkins | Director | 13 Jan 2017 | 31 Dec 2020 | British | 54 years |
| Michael Craig Stoddart | Director | 4 Nov 1997 | 12 Jul 1999 | British | 94 years |
| Michael Edward Riley | Director | 13 Aug 2001 | 22 Mar 2002 | British | 66 years |
| Michael Marshall | Director | 14 Aug 2006 | 31 Mar 2012 | British | 76 years |
| Nicholas Simon Keith Shattock | Director | 12 Jul 1999 | 15 Jan 2004 | British | 67 years |
| Nigel George Ellis | Director | 12 Jul 1999 | 4 Sept 2007 | British | 87 years |
| Paul Hughes | Secretary | 12 Jul 1999 | 31 Jan 2000 | British | - |
| Philip Edmund Lindsell | Director | 23 Oct 1998 | 12 Jul 1999 | British | 73 years |
| Philip Edmund Lindsell | Secretary | 23 Oct 1998 | 12 Jul 1999 | British | - |
| Rebecca Jane Worthington | Director | 22 Aug 2001 | 25 Nov 2002 | British | 55 years |
| Rebecca Jane Worthington | Secretary | 5 Aug 1999 | 23 Jul 2002 | British | - |
| Richard James Stearn | Director | 1 Jan 2013 | 31 Mar 2015 | British | 58 years |
| Robert David Maxted | Director | 6 Dec 1996 | 19 Mar 1999 | British | 79 years |
| Robert Duncan Cossey | Director | 23 Jul 1992 | 12 Jul 1999 | British | 78 years |
| Robin David Clement Arnold | Director | 20 Mar 2008 | 30 Sept 2013 | British | 76 years |
| Roger Christopher Wingate | Director | 23 Jul 1992 | 21 Jul 1999 | British | 86 years |
| Roger Henry Ashley Wain | Director | 23 Jul 1992 | 23 Oct 1995 | British | 88 years |
| Roger Paul Hewitt | Director | 9 Aug 2004 | 28 Jul 2005 | British | 76 years |
| Ronald John Presley | Director | 23 Jul 1992 | 12 Jul 1999 | British | 95 years |
| Sandra Judith Odell | Secretary | 1 Jan 2013 | 5 Oct 2016 | - | - |
| Simon Geoffrey Carter | Director | 26 May 2015 | 13 Jan 2017 | British | 51 years |
| Susan Elizabeth Dixon | Director | 14 Aug 2006 | 1 Jan 2013 | British | 66 years |
| Susan Elizabeth Dixon | Secretary | 25 Oct 2004 | 31 Dec 2012 | British | - |
| Tonianne Dwyer | Director | 30 Nov 2006 | 16 Apr 2010 | Australian | 64 years |