| COLLISON, David RESIGNED | Secretary | 11 Mar 2005 | 01 Feb 2011 | | | 44 Lowther Road, London, SW13 9NU, England |
| DAVIES, John RESIGNED | Secretary | 01 Feb 2011 | 17 Aug 2012 | | | Enbrook Park, Sandgate, Folkestone, Kent, CT20 3SE, United Kingdom |
| HAYNES, Victoria RESIGNED | Secretary | 23 May 2014 | 01 Dec 2015 | | | Enbrook Park, Sandgate, Folkestone, Kent, CT20 3SE, United Kingdom |
| NGONDONGA, Taguma RESIGNED | Secretary | 17 Aug 2012 | 23 May 2014 | | | Fanum House, Basing View, Basingstoke, Hampshire, RG21 4EA, United Kingdom |
| ROBERTS THOMAS, Caroline Emma RESIGNED | Secretary | 22 Aug 1998 | 11 Mar 2005 | | | 5 Broomsleigh Street, London, NW6 1QQ |
| WOOD, John RESIGNED | Secretary | | 22 Aug 1998 | | | Pear Tree Cottage, Bishopstone, Aylesbury, Buckinghamshire, HP12 8SH |
| BOOTY, Stephen Martin RESIGNED | Director | 27 May 2004 | 30 Apr 2008 | United Kingdom | May 1954 | South Lodge, Guildford Road, Effingham, Surrey, KT24 5QE |
| BROWN, Carl Michael RESIGNED | Director | 12 Jun 2017 | 29 Nov 2018 | England | November 1973 | Cavendish House, Lakpur Court, Staffordshire Technology Park, Stafford, ST18 0FX, United Kingdom |
| CHAPMAN, Clive Richard RESIGNED | Director | 01 Dec 1993 | 17 Dec 1997 | United Kingdom | March 1949 | Flat 1, 36 Oakley Street, London, SW3 5NT |
| ELLIS, Martyn Anthony RESIGNED | Director | 01 May 2003 | 31 Jul 2013 | England | May 1956 | Beaconsfield Court, Beaconsfield Road, Hatfield, Hertfordshire, AL10 8HU, United Kingdom |
| GIBSON, Darryn Stanley RESIGNED | Director | 31 Jul 2013 | 09 Sep 2015 | United Kingdom | July 1965 | Enbrook Park, Sandgate, Folkestone, Kent, CT20 3SE, United Kingdom |
| HOWARD, Stuart Michael RESIGNED | Director | 01 Feb 2011 | 14 Jan 2014 | United Kingdom | May 1962 | 2, Enbrook Park, Folkestone, Kent, CT20 3SE, United Kingdom |
| IVERS, John Joseph RESIGNED | Director | 01 Jul 2010 | 26 Jul 2012 | United Kingdom | July 1962 | Brook Lodge, Sandon Brook Manor, Maldon Road, Chelmsford, Essex, CM2 7RZ |
| JEWITT, Justin Allan Spaven, Professor RESIGNED | Director | 03 Feb 1998 | 27 May 2004 | England | May 1954 | The Stables, 89 Aston End Road Aston, Stevenage, Hertfordshire, SG2 7EY |
| LYON, David Oliver RESIGNED | Director | 28 Oct 1996 | 01 May 2003 | England | June 1961 | 41 Park Avenue North, Harpenden, Hertfordshire, AL5 2EE |
| PETHICK, Timothy Mark RESIGNED | Director | 09 Sep 2015 | 31 Dec 2015 | United Kingdom | June 1962 | Enbrook Park, Sandgate, Folkestone, Kent, CT20 3SE, United Kingdom |
| PILGRIM, Alan John Templer RESIGNED | Director | | 05 Jun 1995 | England | June 1951 | 44 Pepper Hill, Great Amwell, Ware, Hertfordshire, SG12 9RZ |
| PRIESTLEY, Jennifer RESIGNED | Director | | 01 Dec 1993 | United Kingdom | June 1946 | 48 Coniger Road, London, SW6 3TA |
| ROGERS, Michael Greig RESIGNED | Director | | 15 Jul 1996 | United Kingdom | March 1942 | 1 Jenningsbury Court, London Road, Hertford, Hertfordshire, SG13 7NS |
| WHITEHEAD, John Henry RESIGNED | Director | 14 Jan 2014 | 12 Jun 2017 | United Kingdom | April 1964 | Beaconsfield House, Beaconsfield Road, Hatfield, Hertfordshire, AL10 8HU, United Kingdom |