| Alan Irvine Pickup | Director | 31 Jul 2000 | 20 Sept 2002 | British | 84 years |
| Andrew James Huke | Director | 23 Jul 2007 | 28 Nov 2011 | British | 67 years |
| Bruce Alan Fletcher | Director | 3 Feb 2011 | 25 Sept 2012 | American | 66 years |
| Catherine Mary Brett | Director | 18 Jul 2014 | 11 Jan 2016 | British | 61 years |
| Christopher David Spooner | Director | 20 Sept 2002 | 21 Sept 2007 | British | 76 years |
| Clive Shaun O'neill Wallis | Director | 22 Aug 1997 | 31 Jul 2000 | British | 71 years |
| Colin Kirkby | Director | 9 Jul 1993 | 25 Jan 1999 | British | 79 years |
| David Jaffa | Director | 17 Dec 2003 | 29 Sept 2006 | British | 71 years |
| David John Clements | Director | 23 Jul 2004 | 28 Nov 2011 | British | 64 years |
| David Martin Ridgway | Director | 27 May 1997 | 27 Feb 1998 | British | 78 years |
| Dennis Michael Smith | Director | 31 Jul 2000 | 31 Aug 2004 | British | 72 years |
| Frances Ann Craig | Director | 6 Dec 2006 | 21 Sept 2007 | British | 66 years |
| Frances Julie Niven | Secretary | 23 Jul 2004 | 19 Jul 2005 | British | - |
| George Cardona | Director | 13 Jan 1999 | 31 Dec 1999 | British | 75 years |
| Helen Docherty | Secretary | 26 Jan 2012 | 15 Oct 2013 | - | - |
| Hollie Rheanna Wood | Secretary | 25 Aug 2011 | 26 Jan 2012 | - | - |
| Irene Mitchell Dorner | Director | 6 Nov 1992 | 9 Jul 1993 | British | 72 years |
| James Keith Barton | Secretary | 6 Nov 1992 | 17 Jul 1995 | British | - |
| Jonathan James Calladine | Director | 25 Sept 2012 | 4 Jul 2014 | British | 60 years |
| Keith Roderick Whitson | Director | 6 Nov 1992 | 9 Jul 1993 | British | 83 years |
| Kurt Raimond Geiger | Director | 6 Nov 1992 | 7 Mar 1993 | Austrian | 81 years |
| Larissa Wilson | Secretary | 18 Jun 2015 | 16 Jun 2017 | - | - |
| Mark Vivian Pearce | Secretary | 19 Dec 2002 | 23 Jul 2004 | British | - |
| Michael Francis Geoghegan | Director | 7 Dec 1994 | 10 Mar 1997 | British | 73 years |
| Michael Roger Pearson Smith | Director | 7 Mar 1993 | 30 Nov 1994 | British | 70 years |
| Nigel Barker | Secretary | 17 Jul 1995 | 11 Oct 1995 | British | - |
| Philip George Hickman | Director | 6 Nov 1992 | 27 May 1997 | British | 76 years |
| Richard Michael James Orgill | Director | 9 Jul 1993 | 6 Nov 1995 | British | 88 years |
| Richard Michael James Orgill | Director | 9 Jul 1993 | 14 Jan 1999 | British | 88 years |
| Robert Hugh Musgrove | Secretary | 2 Aug 1999 | 19 Dec 2002 | Other | - |
| Robert Hugh Musgrove | Secretary | 19 Jul 2005 | 25 Aug 2011 | British | - |
| Robert James Hinton | Secretary | 15 Oct 2013 | 20 Feb 2015 | - | - |
| Roger Keith Mcgregor | Director | 30 Apr 1997 | 31 Dec 1999 | British | 78 years |
| Shaun Kevin Bryant | Secretary | 11 Oct 1995 | 2 Aug 1999 | British | - |
| Terence John Day | Director | 31 Jul 2000 | 17 Dec 2003 | British | 78 years |