| Adrian Thomas Grace | Director | 27 Feb 2008 | 16 Jan 2009 | British | 63 years |
| Alistair Linn Webster | Director | 20 Jan 2004 | 30 Jun 2009 | British | 73 years |
| Anthony Joseph John Bochenski | Director | 27 Mar 1989 | 30 Nov 2000 | British | 75 years |
| Carol Ann Ritchie | Director | 1 Apr 2003 | 30 Apr 2004 | British | 67 years |
| Christopher Sutton | Director | 27 Sept 2012 | 23 Dec 2014 | British | 68 years |
| Claude Harry Bush | Director | 27 Mar 1989 | 31 Mar 1994 | British | 94 years |
| George Gibson Reid | Director | 20 Jan 2004 | 4 Jan 2006 | British | 58 years |
| Gordon Ferguson | Director | 30 Jun 2009 | 1 May 2013 | British | 63 years |
| James Owen Trace | Director | 1 May 2013 | 23 Dec 2014 | British | 63 years |
| Jason Paul Nichols | Director | 23 Dec 2014 | 27 May 2016 | British | 55 years |
| Jayson Edwards | Director | 1 May 2013 | 4 Dec 2013 | British | 62 years |
| John Alexander Mercer | Director | 27 Mar 1989 | 30 Jun 2000 | British | 87 years |
| John Michael Morrissey | Director | 30 Jun 2009 | 31 Aug 2010 | British | 65 years |
| John Paul Moore | Director | 23 Dec 2014 | 31 Dec 2017 | British | 59 years |
| John Sidney Hammond | Director | 27 Mar 1989 | 3 Feb 2000 | British | 82 years |
| John Sydney Brown | Director | 27 Mar 1989 | 28 May 1996 | British | 94 years |
| Lindsay John Town | Director | 20 Jan 2004 | 7 Apr 2009 | British | 72 years |
| Martin Kenneth Staples | Director | 4 Jan 2006 | 31 Oct 2006 | British | 53 years |
| Michael John David Griffiths | Director | 18 Apr 2011 | 23 Dec 2014 | British | 77 years |
| Michael Richard Perry | Director | 27 Mar 1989 | 30 Jul 1999 | British | 82 years |
| Paul Gittins | Secretary | 1 Jun 2000 | 12 Jan 2017 | British | - |
| Philip James Han | Director | 1 Apr 2003 | 12 Nov 2003 | British | 64 years |
| Raymond Nixon | Secretary | 27 Mar 1989 | 31 May 2000 | British | - |
| Rigvi Ramnauth | Director | 23 Dec 2014 | 27 May 2016 | British | 57 years |
| Robert Brown Hare | Director | 29 Jun 2000 | 7 Mar 2005 | British | 66 years |
| Roy Littler | Director | 27 Mar 1989 | 30 Jun 2000 | British | 85 years |
| Steven David Russell Chessman | Director | 27 Aug 2010 | 28 Feb 2011 | British | 63 years |
| Stuart James Ballingall | Director | 15 Jan 2007 | 30 Jun 2009 | British | 62 years |
| Timothy Mark Blackwell | Director | 30 Jun 2009 | 19 Sept 2011 | British | 57 years |
| Trevor John Skinner | Director | 29 Jan 1990 | 30 Sept 2002 | British | 84 years |
| William Gordon Barclay | Director | 29 Jun 2000 | 31 Dec 2002 | British | 79 years |