| Alan John Ainsworth | Director | 2 Apr 2003 | 31 Mar 2006 | British | 75 years |
| Andrew James Nicoll | Director | 1 Aug 2016 | 11 Nov 2022 | British | 57 years |
| Andrew Stephen Melcher | Director | 1 May 1992 | 18 Sept 1995 | U S | 77 years |
| Anthony John Russell | Director | 1 May 1992 | 30 Apr 1998 | British | 84 years |
| Campbell David Fleming | Director | 11 Dec 2009 | 29 Apr 2016 | Australian | 62 years |
| Christopher Walter Laidlaw | Director | 5 Nov 1998 | 13 Aug 1999 | British | 74 years |
| Clive Frederick Coates | Director | 18 Sept 1995 | 30 Oct 1997 | British | 82 years |
| Crispin John Henderson | Director | 2 Apr 2003 | 28 Feb 2013 | British | 78 years |
| David Frederick Sachon | Director | 2 Apr 2003 | 31 Mar 2006 | British | 76 years |
| David Gasparro | Director | 3 Apr 2006 | 31 Jan 2009 | British | 61 years |
| David Perrott Sims | Director | 9 Nov 1999 | 19 Jan 2001 | British | 68 years |
| Harold Charles Snow | Director | 5 Nov 1998 | 26 Nov 2001 | British | 67 years |
| Ian Douglas Macrae | Director | 30 Apr 1998 | 5 Nov 1998 | British | 73 years |
| Ian Humphries James | Director | 18 Sept 1995 | 31 Oct 1997 | British | 75 years |
| James Anthony Wiltshire | Director | 18 Sept 1995 | 5 Nov 1998 | British | 83 years |
| James Anthony Wiltshire | Secretary | 1 May 1992 | 31 May 1999 | British | - |
| John Adrian Varcoe Grimshaw | Director | 12 Jun 2006 | 24 Nov 2008 | British | 64 years |
| John Antony Cacchioli | Director | 26 Jul 2001 | 15 May 2002 | British | 68 years |
| John Devine | Director | 14 Nov 2008 | 1 Dec 2010 | British | 68 years |
| Laura Mary Weatherup | Director | 11 Jul 2016 | 18 Dec 2023 | British | 51 years |
| Lawrence Churchill | Director | 5 Dec 2002 | 2 Apr 2003 | British | 80 years |
| Margaret Elizabeth Gibbon | Secretary | 31 May 1999 | 2 Apr 2003 | British | - |
| Michelle Sylvia Scrimgeour | Director | 14 Aug 2017 | 26 Apr 2019 | British | 63 years |
| Nicholas John Ring | Director | 2 Jul 2009 | 24 Jun 2015 | British | 61 years |
| Paul Anthony Lewis | Director | 9 Nov 1999 | 9 Aug 2001 | British | 64 years |
| Phil Andrew Hodkinson | Director | 5 Nov 1998 | 29 Dec 2000 | British | 68 years |
| Philip James William Reed | Director | 1 Oct 2007 | 30 Jun 2014 | British | 64 years |
| Robert William Torrance | Director | 30 Oct 1997 | 5 Nov 1998 | Australian | 68 years |
| Rodney Malcolm Cook | Director | 18 Sept 2001 | 14 Oct 2002 | British/australian | 69 years |
| Simon Howard Davies | Director | 2 Apr 2003 | 1 Aug 2007 | British | 67 years |
| Steven James Colsell | Director | 26 Jul 2001 | 2 Apr 2003 | British | 62 years |
| Thomas William Challenor | Director | 2 Apr 2003 | 30 Jun 2009 | British | 71 years |
| Timothy Nicholas Gillbanks | Director | 9 Mar 2005 | 31 Mar 2017 | British | 60 years |
| Vincent John Jerrard | Director | 26 Jul 2001 | 2 Apr 2003 | British | 71 years |
| William David Lowndes | Director | 2 Apr 2003 | 12 Jun 2006 | British | 63 years |