| Andrew Charles Stent Coffey | Director | 22 Feb 2010 | 30 Apr 2013 | Australian | 63 years |
| Angus Howard Fletcher | Director | 5 Apr 2004 | 28 Feb 2011 | British | 76 years |
| Anthony Alexander Preiskel | Director | 24 May 1992 | 3 Apr 2009 | British | 79 years |
| Anthony Arthur Chambers | Director | 6 Apr 1994 | 31 Jul 2000 | British | 80 years |
| Anthony David England | Director | 24 May 1992 | 31 Mar 1994 | British | 82 years |
| Basil Arthur Winham | Director | 24 May 1992 | 16 Dec 2005 | British | 106 years |
| Bernadette Allinson | Secretary | 29 Sept 2006 | 22 Mar 2008 | Other | - |
| Bruce Dugald Macphail | Director | 24 May 1992 | 16 Dec 2005 | British | 87 years |
| Cynthia Mary Coombe | Secretary | 26 Oct 2010 | 28 Jul 2014 | - | - |
| David John Nicholson | Secretary | 22 Mar 2008 | 26 Oct 2010 | Other | - |
| Edmund Kenneth Wyatt | Secretary | 24 May 1992 | 31 Jul 1993 | British | - |
| Edward Elliot Wilson | Director | 26 Jul 2007 | 23 Jun 2014 | British | 76 years |
| Gary Brooks | Director | 29 Jul 2004 | 16 Dec 2005 | British | 69 years |
| Gary Brooks | Director | 15 Jul 2009 | 31 Dec 2014 | British | 69 years |
| Ian Gregory Howie Barnett | Director | 24 May 1992 | 16 Dec 2005 | British | 76 years |
| Ian Gregory Howie Barnett | Director | 13 Nov 2006 | 31 Dec 2014 | British | 76 years |
| John Davey Beverton | Director | 1 Aug 1994 | 20 Nov 2000 | British | 85 years |
| John Huxley Fordyce Anderson | Director | 24 May 1992 | 28 Oct 1999 | British | 81 years |
| Ned Sweeney Holmes | Director | 31 Jul 2001 | 3 Jan 2006 | American | 82 years |
| Peter Sidney Seward | Director | 29 Jul 2004 | 5 Aug 2005 | British | 76 years |
| Philip Alwyn Bignell | Director | 5 Jul 2000 | 29 Sept 2006 | British | 73 years |
| Philip Alwyn Bignell | Secretary | 31 Jul 1993 | 29 Sept 2006 | British | - |
| Rashidi Olugbenga Keshiro | Director | 28 Feb 2011 | 9 Apr 2018 | British | 60 years |
| Raymond Antony Knight | Director | 24 May 1992 | 16 Dec 2005 | British | 83 years |
| Richard John Christmas | Director | 24 May 1992 | 30 Jun 2000 | British | 79 years |
| Richard Michael Gradon | Director | 30 Aug 2001 | 30 Jun 2006 | British | 67 years |
| Robert George Ferguson | Director | 24 May 1992 | 31 Jul 1999 | British | 87 years |
| Robin Richard Cordwell | Director | 16 Oct 1992 | 31 Aug 1999 | Canadian | 88 years |
| Ronald George Jennings | Director | 24 May 1992 | 31 Mar 1994 | British | 97 years |
| Sayed Shuja Ali | Director | 22 Nov 2014 | 30 Aug 2016 | British | 60 years |
| Seshadri Rengaswamy Karaikuruchi | Director | 30 Apr 2015 | 30 Aug 2016 | Indian | 63 years |
| Stephen Oliver Francis Kerridge | Director | 29 Jul 2004 | 16 Dec 2005 | British | 81 years |
| Timothy John Randolph Harding | Director | 24 May 1992 | 31 Jul 2001 | British | 86 years |
| William Thomas Edgerley | Director | 6 Apr 1994 | 15 Jul 2009 | British | 70 years |