| TRAUTWEIN, Caspaar Friedrich, Dr ACTIVE | Director | 03 Aug 2018 | | Germany | August 1964 | Allen House, 1 Westmead Road, Sutton, Surrey, SM1 4LA |
| COLLISON, David RESIGNED | Secretary | 31 Dec 2015 | 14 Dec 2018 | | | Cavendish House, Lakhpur Court, Staffordshire Technology Park, Stafford, ST18 0FX, England |
| 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 | 01 Aug 2002 | 30 Apr 2008 | United Kingdom | May 1954 | South Lodge, Guildford Road, Effingham, Surrey, KT24 5QE |
| BRADSHAW, Philip Edmund Moore RESIGNED | Director | | 13 Sep 1996 | | August 1948 | 5 Pevensey Road, Bedford, Bedfordshire, MK41 8HW |
| BROWN, Carl Michael RESIGNED | Director | 12 Jun 2017 | 29 Nov 2018 | England | November 1973 | Cavendish House, Lakhpur Court, Staffordshire Technology Park, Stafford, ST18 0FX, England |
| CHAPMAN, Clive Richard RESIGNED | Director | 29 Jun 1995 | 17 Dec 1997 | United Kingdom | March 1949 | Flat 1, 36 Oakley Street, London, SW3 5NT |
| COLLIER, David RESIGNED | Director | | 30 Jul 1993 | | July 1945 | 9 Birch Trees Road, Great Shelford, Cambridge, CB2 5AW |
| CONWAY, David Michael RESIGNED | Director | 20 Apr 1998 | 23 Sep 1999 | | September 1951 | 1 Beech Lane, Prestwood, Buckinghamshire, HP16 9DP |
| DEVINE, Francis Joseph RESIGNED | Director | 16 May 1996 | 14 Jul 1998 | | January 1956 | 12 Turnstone Green, Bicester, Oxfordshire, OX6 0TT |
| 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 |
| GREENE, Kevin Anthony RESIGNED | Director | 01 Sep 1997 | 01 May 2003 | | July 1953 | Bethena 25 Alexandra Road, Ash, Aldershot, Hampshire, GU12 6PQ |
| HEYWOOD, David George RESIGNED | Director | 04 Oct 2001 | 01 Jun 2002 | | August 1935 | Logie Cedar Road, Woking, Surrey, GU22 0JH |
| HORGAN, Michael David RESIGNED | Director | | 04 Mar 2002 | England | January 1945 | 7 Lady Yorke Park, Seven Hills Road, Iver, Buckinghamshire, SL0 0PD |
| 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 |
| JACKSON, Dawn Elizabeth RESIGNED | Director | 16 May 1996 | 26 Oct 2001 | | December 1966 | Lintalee, Lower Hartwell, Aylesbury, Buckinghamshire, HP17 8NR |
| JEWITT, Justin Allan Spaven, Professor RESIGNED | Director | 11 Jul 1994 | 27 May 2004 | England | May 1954 | The Stables, 89 Aston End Road Aston, Stevenage, Hertfordshire, SG2 7EY |
| JEYES, Patricia Mary RESIGNED | Director | | 21 Feb 1997 | | July 1944 | The Croft, Soar Road, Quorn, Leicestershire, LE12 8BW |
| LYON, David Oliver RESIGNED | Director | 03 Feb 1998 | 01 May 2003 | England | June 1961 | 41 Park Avenue North, Harpenden, Hertfordshire, AL5 2EE |
| MACHIN, Joanne RESIGNED | Director | 01 Aug 2017 | 01 Nov 2018 | England | November 1966 | Cavendish House, Lakhpur Court, Staffordshire Technology Park, Stafford, ST18 0FX, England |
| MASON, Catherine Lois RESIGNED | Director | 25 Jul 2016 | 05 Aug 2016 | England | June 1961 | Cavendish House, Lakhpur Court, Staffordshire Technology Park, Stafford, ST18 0FX, England |
| MCCLIMONT, William Sinclair RESIGNED | Director | | 18 Oct 2002 | England | April 1955 | Trollbridge House Church Street, Holloway, Matlock, Derbyshire, DE4 5AY |
| MCGAREL-GROVES, Hugh Macmillan Jullian RESIGNED | Director | 12 Jun 2000 | 31 Jul 2002 | England | June 1952 | Home Farm, Salters Lane, Ludgershall, Aylesbury, Buckinghamshire, HP18 9NY |
| OVERGAGE, Simon RESIGNED | Director | 19 Oct 1999 | 18 Oct 2002 | | June 1962 | 17 Radway Close, Redditch, Worcestershire, B98 8RZ |
| PETHICK, Timothy Mark RESIGNED | Director | 09 Sep 2015 | 31 Dec 2015 | United Kingdom | June 1962 | Enbrook Park, Sandgate, Folkestone, Kent, CT20 3SE, United Kingdom |
| PHILLIPS, Lynne Marjorie Macgregor RESIGNED | Director | 02 Mar 1998 | 06 Mar 2002 | England | May 1959 | Fieldview Cottage, Gole Road, Pirbright, Woking, Surrey, GU24 0QF |
| PILGRIM, Alan John Templer RESIGNED | Director | | 05 Jun 1995 | England | June 1951 | 44 Pepper Hill, Great Amwell, Ware, Hertfordshire, SG12 9RZ |
| PREECE, Richard Mark RESIGNED | Director | 14 Jan 2016 | 16 Feb 2016 | England | November 1964 | Cavendish House, Lakpur Court, Staffordshire Technology Park, Stafford, ST18 0FX, United Kingdom |
| PUNTER, Philip RESIGNED | Director | | 19 Feb 1996 | | October 1948 | 15 Reddings, Welwyn Garden City, Hertfordshire, AL8 7LA |
| ROGERS, Michael Greig RESIGNED | Director | | 15 Jul 1996 | United Kingdom | March 1942 | 1 Jenningsbury Court, London Road, Hertford, Hertfordshire, SG13 7NS |
| SIVAKUMARAN, Kanapathpillai Sivasambo RESIGNED | Director | 06 Sep 1999 | 02 Mar 2000 | | June 1957 | 30 Chase Lane, Ilford, Essex, IG6 1BH |
| WARNKE, Luca RESIGNED | Director | 25 Sep 2016 | 01 Nov 2018 | Germany | April 1970 | Cavendish House, Lakhpur Court, Staffordshire Technology Park, Stafford, ST18 0FX, England |
| 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 |