| Adrian Alastair Montague | Director | 27 Nov 2007 | 3 Jul 2009 | British | 78 years |
| Alain Leopold Grisay | Director | 11 Oct 2004 | 9 May 2012 | British | 72 years |
| Alan Mcfarlane | Director | 24 Aug 1990 | 31 Dec 1992 | British | 70 years |
| Allan Munro | Director | 11 Aug 1989 | 25 May 1999 | British | 79 years |
| Ann Lindsay Roughead | Director | 24 May 2023 | 21 Nov 2023 | British | 64 years |
| Arnold Roger Alexander Young | Director | 8 Mar 1993 | 28 Feb 1999 | British | 82 years |
| Audrey Morrison | Secretary | 20 Mar 2006 | 31 Jul 2008 | British | - |
| Barry Firoz Sanjana | Director | 22 Aug 2001 | 28 Jun 2002 | British | 71 years |
| Barry Merritt Cooper | Director | 7 May 2014 | 21 May 2019 | Canadian | 82 years |
| Barry Sean Mcinerney | Director | 7 May 2014 | 3 May 2016 | American | 63 years |
| Brian Paul Larcombe | Director | 24 Jan 2005 | 3 Feb 2011 | British | 73 years |
| Brian William Sweetland | Director | 17 Feb 1998 | 24 Jan 2005 | British | 81 years |
| Charles Benedict Porter | Director | 10 May 2013 | 21 Nov 2023 | British | 66 years |
| Christopher Martin Jemmett | Director | 17 Feb 1998 | 10 May 2007 | British | 90 years |
| Colin Peter Hook | Director | 17 Oct 1994 | 3 Feb 1997 | British | 84 years |
| David Brett Nichol | Director | 11 Aug 1989 | 31 Dec 1992 | British | 81 years |
| David Kennedy Newbigging | Director | 11 Aug 1989 | 1 Sept 1995 | British | 92 years |
| David Logan | Director | 31 Jul 2006 | 21 Nov 2023 | British | 57 years |
| David Mclaren Gray | Director | 25 May 1999 | 10 May 2007 | British | 75 years |
| David Oliphant Kinloch | Director | 1 Sept 1994 | 11 Oct 2004 | British | 84 years |
| David Thomas Mcleod Ross | Director | 11 Aug 1989 | 18 Apr 1990 | British | 77 years |
| Deborah Clair Adams | Secretary | 4 Jul 1991 | 10 Feb 1995 | British | - |
| Derham Charles O'neill | Director | 3 Feb 2011 | 7 May 2014 | British | 83 years |
| Dick Johan De Beus | Director | 11 Oct 2004 | 7 May 2009 | Dutch | 80 years |
| Edward John Bramson | Director | 3 Feb 2011 | 22 Aug 2013 | British | 75 years |
| Geoffrey Charles Musson | Director | 11 Aug 1989 | 16 Jan 1991 | British | 84 years |
| Gerhard Boeries Karl Roggemann | Director | 19 Jun 2007 | 3 May 2011 | German | 78 years |
| Gilles Gerard Ouellette | Director | 7 May 2014 | 8 Nov 2021 | Canadian | 79 years |
| Gordon Joseph Neilly | Director | 3 May 1990 | 31 Jan 1997 | British | 66 years |
| Gordon Russell Young | Secretary | 11 Aug 1989 | 4 Jul 1991 | British | - |
| Graeme Andrew Yule Maclennan | Director | 11 Aug 1989 | 31 May 1990 | British | 84 years |
| Howard Carter | Director | 17 Feb 1998 | 16 May 2006 | British | 75 years |
| Ian Brindle | Director | 3 Feb 2011 | 10 May 2013 | British | 83 years |
| Ian Frank Rushbrook | Director | 11 Aug 1989 | 25 May 1999 | British | 86 years |
| Ian John Paterson Brown | Director | 24 Aug 1990 | 1 Jan 1995 | British | 72 years |
| Ian John Paterson Brown | Director | 1 Jul 2002 | 16 May 2006 | British | 72 years |
| Ian John Paterson Brown | Secretary | 10 Feb 1995 | 1 Jul 2002 | British | - |
| James Anderson | Director | 24 Aug 1990 | 1 Jan 1995 | British | 74 years |
| James Ramsay Smart | Director | 1 Jan 2007 | 15 Aug 2008 | British | 66 years |
| Jeffrey Medlock | Director | 11 Oct 2004 | 10 May 2013 | British | 86 years |
| Joan Z Mohammed | Director | 2 Aug 2016 | 8 Nov 2021 | American | 65 years |
| John Axson Heywood | Director | 11 Oct 2004 | 13 May 2008 | British | 89 years |
| John Stubbs | Director | 24 Apr 1995 | 3 Sept 2001 | British | 82 years |
| Karen Margaret Mcpherson | Director | 11 Oct 2004 | 7 Nov 2006 | British | 75 years |
| Keith Edward Percy | Director | 22 Nov 2011 | 7 May 2014 | British | 81 years |
| Keith Hamilton Wood | Director | 11 Aug 1989 | 6 Dec 1991 | American | 91 years |
| Keith Jones | Director | 24 Nov 2011 | 7 May 2014 | British | 74 years |
| Keith Leonard Bedell-pearce | Director | 18 Dec 2002 | 7 May 2014 | British | 80 years |
| Keith Satchell | Director | 17 Feb 1998 | 1 Jan 2007 | British | 75 years |
| Kenneth John Back | Director | 29 Jul 1999 | 11 Oct 2004 | British | 71 years |
| Kenneth William Ballard Inglis | Director | 25 May 1999 | 26 Apr 2005 | British | 83 years |
| Kieran Charles Poynter | Director | 1 Jun 2009 | 8 Nov 2021 | British | 76 years |
| Kieran Charles Poynter | Director | 23 Dec 2021 | 21 Nov 2023 | British | 76 years |
| Kristi Lynne Mitchem | Director | 22 May 2019 | 8 Nov 2021 | American | 56 years |
| Mark Robert John Tyndall | Director | 24 Aug 1990 | 1 Jan 1995 | British | 68 years |
| Michael Jeremy Kindersley Belmont | Director | 11 Aug 1989 | 1 Sept 1995 | British | 96 years |
| Michael Trevor Woodward | Director | 3 May 1990 | 1 Jan 1995 | British | 69 years |
| Michaela Caroline Jackson | Director | 8 Nov 2021 | 21 Nov 2023 | British | 46 years |
| Nicholas John Ring | Director | 8 Nov 2021 | 21 Nov 2023 | British | 61 years |
| Nicholas Rupert Macandrew | Director | 10 May 2007 | 3 Feb 2011 | British | 79 years |
| Nick Criticos | Director | 1 Jul 2002 | 11 Oct 2004 | British | 68 years |
| Nigel Edward Melville | Director | 8 Sept 1997 | 17 Feb 1998 | British | 81 years |
| Pascal D'irumberry De Salaberry | Director | 11 Aug 1989 | 30 Aug 1991 | French | 85 years |
| Paula Young | Secretary | 13 Sept 2016 | 8 Nov 2021 | - | - |
| Peter Alistair Kennedy Arthur | Director | 3 Dec 1999 | 11 Oct 2004 | British | 70 years |
| Peter Derek Jones | Director | 17 Feb 1998 | 30 Sept 2000 | British | 85 years |
| Philip Wynford Moore | Director | 24 Jan 2005 | 27 Nov 2007 | British | 66 years |
| Rajiv Rai Silgardo | Director | 7 May 2014 | 31 Jul 2016 | Canadian | 69 years |
| Richard Adrian Watts | Director | 8 Nov 2021 | 30 Nov 2023 | British | 54 years |
| Richard Charles Wilson | Director | 4 Dec 2012 | 22 May 2019 | British | 60 years |
| Richard Davidson Muckart | Director | 1 Jan 1994 | 1 Jan 1995 | British | 76 years |
| Richard Ian Edward Carswell | Director | 11 Aug 1989 | 21 Sept 1990 | British | 81 years |
| Richard Ramsay | Director | 10 May 1993 | 1 Jan 1995 | British | 76 years |
| Robert Alexander Hammond Chambers | Director | 11 Aug 1989 | 31 Dec 1991 | British | 84 years |
| Robert Edwin Talbut | Director | 1 Jul 2002 | 11 Oct 2004 | British | 66 years |
| Robert Warren Jenkins | Director | 11 Oct 2004 | 7 May 2009 | American | 75 years |
| Roger Philip Yates | Director | 1 Jun 2009 | 11 Dec 2009 | British | 69 years |
| Ruth Alexandra Sack | Director | 7 Jun 2013 | 21 Nov 2023 | British | 68 years |
| Trevor John Matthews | Director | 15 Aug 2008 | 3 Jul 2009 | Australian | 74 years |
| William Kenneth Spinney Smith | Director | 7 May 2014 | 8 Nov 2021 | British,canadian | 67 years |
| William Marrack Tonkin | Secretary | 1 Jul 2002 | 13 Sept 2016 | British | - |