| Aaron Henry Meder | Director | 30 Nov 2015 | 21 Sept 2018 | American | 49 years |
| Adam Simon Wiltshire | Director | 15 Jan 2010 | 30 Nov 2010 | British | 61 years |
| Adam Simon Wiltshire | Director | 21 Jan 2013 | 30 Nov 2015 | British | 61 years |
| Alan Dick | Director | 1 Feb 1993 | 31 Dec 1993 | British | 82 years |
| Albert Edward Gould | Director | 1 Feb 1993 | 31 Dec 1995 | British | 87 years |
| Alexandra Morton Lewis | Director | 30 Nov 2010 | 29 Aug 2013 | British | 54 years |
| Andrew George Henry Kluth | Director | 15 Jun 2006 | 15 Jan 2010 | British | 62 years |
| Andrew Parry | Director | 1 Jan 2014 | 30 Nov 2015 | British | 64 years |
| Andrew Peter Durrant | Secretary | 14 Sept 2006 | 19 Oct 2007 | British | - |
| Andrew Philip Poole | Secretary | 15 Apr 1997 | 21 Jul 1999 | British | - |
| Archibald Goldie Murray | Director | 5 Jun 2008 | 17 Jun 2013 | British | 68 years |
| Brian Peter Murphy | Director | 28 Jun 1996 | 31 Mar 1998 | British | 76 years |
| Brian Ralph Thornley | Director | 23 Jun 1997 | 23 Nov 1998 | British | 80 years |
| Brian Ralph Thornley | Director | 14 Dec 2000 | 30 Jun 2001 | British | 80 years |
| Colin Michael Shoesmith | Director | 25 Feb 1997 | 23 Nov 1998 | British | 69 years |
| David Bowers | Director | 23 Nov 1998 | 11 Nov 2002 | British | 75 years |
| David Brooks | Director | 1 Jan 1996 | 7 Mar 1997 | British | 85 years |
| David Charles Forward | Secretary | 22 Feb 2011 | 30 Nov 2013 | - | - |
| David George Wells | Director | 1 Feb 1993 | 14 Dec 1994 | British | 85 years |
| David James Hider | Director | 1 Feb 1993 | 31 Dec 1995 | British | 92 years |
| David John Evans | Director | 4 Mar 1993 | 1 Dec 2005 | British | 71 years |
| David Mcneil Dewar | Director | 1 Feb 1993 | 1 Jun 1996 | British | 81 years |
| David Rocyn Rees | Director | 22 Sept 2004 | 9 Oct 2009 | British | 67 years |
| Denise Hill | Director | 2 Mar 1994 | 14 Dec 1994 | British | 73 years |
| Dennis Frederick Jones | Director | 1 Mar 1995 | 31 Dec 1997 | British | 75 years |
| Dennis James Duffy | Director | 8 Dec 2005 | 12 Sept 2011 | British | 66 years |
| Douglas Harry Ebdon | Director | 14 Dec 1994 | 30 Jun 1995 | British | 81 years |
| Emma Suzanne Cockburn | Secretary | 19 Oct 2007 | 18 Sept 2008 | British | - |
| Eric Paul Jones | Director | 13 Aug 1996 | 23 Nov 1998 | British | 78 years |
| Eric Paul Jones | Director | 20 May 1999 | 29 May 1999 | British | 78 years |
| Eric Paul Jones | Director | 9 Dec 1999 | 2 Oct 2000 | British | 78 years |
| Ernest Charles King | Director | 1 Feb 1993 | 1 Nov 1994 | British | 77 years |
| Ernest Clarkson | Director | 13 Aug 1996 | 31 Mar 1998 | British | 72 years |
| Graham Leonard Bateson | Director | 1 Feb 1993 | 21 Oct 1996 | British | 75 years |
| Heather Maria Rayner | Secretary | 13 Nov 2009 | 31 Jan 2014 | - | - |
| Helen Alice Baker | Secretary | 8 Nov 2005 | 23 Nov 2007 | British | - |
| James Lowrie | Director | 13 Aug 1996 | 31 Mar 1998 | British | 69 years |
| John Alun Geoffrey Owen | Director | 11 Dec 1996 | 23 Nov 1998 | British | 79 years |
| John Flynn | Director | 22 Nov 2011 | 30 Nov 2015 | British | 71 years |
| John Francis Sargent | Director | 20 Jul 1998 | 31 Oct 2003 | British | 79 years |
| John Leslie Hyde | Director | 20 Jul 1998 | 23 Nov 1998 | British | 84 years |
| John Michael Kent | Director | 1 Jan 1996 | 31 Mar 1998 | British | 68 years |
| John Misselbrook | Director | 1 Sept 2013 | 20 May 2015 | British | 76 years |
| John Parkin | Director | 1 Feb 1993 | 26 Jul 1996 | British | 79 years |
| Julie Ann Aspinall | Director | 1 Jun 2014 | 30 Nov 2015 | British | 60 years |
| Karen Burrows | Director | 23 Nov 1998 | 1 Nov 1999 | British | 70 years |
| Leonard Norris | Director | 4 Mar 1993 | 30 Jun 1993 | British | 84 years |
| Lewis John Woodburn Mcalister | Director | 12 Dec 2002 | 18 May 2006 | British | 60 years |
| Malcolm Charles Cooper | Director | 17 Jun 2003 | 21 Sept 2004 | British | 67 years |
| Mark David Noble | Secretary | 23 Nov 2007 | 1 Nov 2010 | British | - |
| Mark Edwards | Secretary | 1 Feb 1993 | 15 Apr 1997 | British | - |
| Mawlaw Secretaries Limited | Corporate Secretary | 21 Jul 1999 | 8 Nov 2005 | United Kingdom | - |
| Michael Colin Calviou | Director | 9 Oct 2009 | 3 Dec 2012 | British | 57 years |
| Michael Jones | Director | 2 Mar 1994 | 28 Jun 1996 | British | 84 years |
| Patrick Gerrard Leslie | Director | 1 Mar 1995 | 21 Oct 1996 | British | 71 years |
| Paul Sharman | Director | 1 Jan 2011 | 10 Mar 2015 | British | 74 years |
| Peter Walsh | Director | 1 Feb 1993 | 31 Dec 1995 | British | 90 years |
| Philip Lyndon Higgins | Secretary | 26 Sept 2008 | 13 Nov 2009 | British | - |
| Philip Lyndon Higgins | Secretary | 2 Dec 2010 | 22 Feb 2011 | - | - |
| Robert John Whitehouse | Director | 1 Feb 1993 | 31 Mar 1996 | British | 82 years |
| Robin John Matthews | Director | 20 Jul 1998 | 23 Nov 1998 | British | 73 years |
| Robin John Matthews | Director | 11 Nov 2003 | 30 Nov 2005 | British | 73 years |
| Roy Charles Gillson | Director | 15 Dec 2003 | 31 Dec 2010 | British | 74 years |
| Roy Henry Peters | Director | 23 Nov 1998 | 31 Dec 2003 | British | 82 years |
| Siobhan Geraldine Boylan | Director | 30 Nov 2015 | 18 Jan 2019 | British | 57 years |
| Stanley Christopher Edwards | Director | 1 Dec 2005 | 5 Jun 2008 | British | 95 years |
| Stephen Charles Burrard-lucas | Director | 24 Aug 1995 | 23 Nov 1998 | British | 72 years |
| Stephen Colin Edgeworth | Director | 14 Sept 2001 | 31 Mar 2003 | British | 69 years |
| Stuart John Waldron | Director | 11 Feb 2013 | 30 Nov 2015 | British | 53 years |
| Terence Ronald Matthews | Director | 21 Oct 1996 | 23 Nov 1998 | British | 81 years |