| Andrew George O'leary | Director | 26 Jun 1991 | 26 Aug 1993 | British | 96 years |
| Andrew Mark Parsons | Director | 5 Oct 2012 | 18 Feb 2014 | British | 60 years |
| Christopher Michael John Mathew | Director | 31 Oct 1997 | 31 Mar 2001 | Irish | 75 years |
| David James Walkden | Director | 31 Dec 2010 | 3 Nov 2015 | British | 67 years |
| David Michael Schuster | Secretary | 26 Sept 1996 | 2 May 1997 | British | - |
| Douglas Martin Claisse | Director | 26 Jun 1991 | 23 Apr 1997 | British | 91 years |
| Duncan Alistair Finch | Director | 30 Jun 2009 | 31 Dec 2010 | British | 60 years |
| Eric William Hodson | Director | 10 Sept 1991 | 31 Jan 1996 | British | 89 years |
| Gregor Ninian Stewart | Director | 31 Dec 2010 | 5 Oct 2012 | British | 61 years |
| Heather Jane Matthew | Secretary | 30 Jun 2015 | 25 Nov 2016 | - | - |
| Ian Henry Price | Director | 5 Dec 2018 | 9 Jul 2019 | British | 60 years |
| James Edward Clatworthy | Director | 5 Oct 2012 | 29 Feb 2016 | British | 58 years |
| James Masson Black | Director | 18 Feb 2014 | 23 Aug 2016 | British | 61 years |
| John Mark Phythian | Director | 9 Jul 2019 | 4 Aug 2021 | British | 45 years |
| John Patrick Hiew | Director | 1 May 2003 | 5 Oct 2006 | British | 61 years |
| John Spellman | Director | 24 Oct 2000 | 31 Mar 2003 | British | 59 years |
| John Stephen Edwards | Director | 31 Oct 1997 | 30 Jun 2009 | British | 70 years |
| John Van Der Wielen | Director | 30 Jun 2009 | 30 Jun 2010 | Australian | 59 years |
| Keith William Abercromby | Director | 1 May 2003 | 17 Oct 2005 | British | 61 years |
| Louise Carol Mckenzie Crane | Secretary | 25 Nov 2016 | 11 Sept 2018 | - | - |
| Marie Elaine Williams | Director | 10 Mar 2016 | 5 Dec 2018 | British | 46 years |
| Michael John Richardson | Director | 26 Jun 1991 | 15 Dec 1995 | British | 78 years |
| Michael Stuart Robinson | Director | 12 Dec 1997 | 30 Jun 2006 | British | 61 years |
| Nigel Royston Gardner | Director | 14 Sept 1993 | 30 Apr 2002 | British | 72 years |
| Paul Andrew Massey | Director | 1 May 2003 | 21 Dec 2003 | British | 65 years |
| Peter John Veale | Secretary | 4 Aug 2000 | 31 Mar 2009 | British | - |
| Richard William May | Director | 10 Sept 1991 | 18 Dec 1995 | British | 74 years |
| Richard William May | Secretary | 10 Sept 1991 | 18 Dec 1995 | British | - |
| Robert Henry Mallett | Secretary | 13 Dec 1994 | 26 Sept 1996 | British | - |
| Robert Philippe Walther | Director | 26 Jun 1991 | 31 Oct 2001 | British | 82 years |
| Roger David Corley | Director | 26 Jun 1991 | 19 Apr 1995 | British | 92 years |
| Roland Gordon Ward | Director | 3 Apr 1996 | 31 Jan 2004 | British | 80 years |
| Ronald Frank Cameron Taylor | Director | 3 Nov 2015 | 31 Dec 2017 | British | 59 years |
| Sally Mayer | Secretary | 31 Mar 2009 | 29 May 2015 | British | - |
| Sean William Lowther | Director | 22 Aug 2016 | 31 Dec 2022 | British | 65 years |
| Steven James Colsell | Director | 5 Oct 2006 | 30 Jun 2009 | British | 61 years |
| Susan Annabel Margaret Fogarty | Secretary | 2 May 1997 | 4 Aug 2000 | British | - |
| Victoria Flenk | Director | 4 Aug 2021 | 30 Nov 2022 | British | 41 years |