| ROGERS, Wendy Fiona ACTIVE | Secretary | 10 Mar 2016 | | | | Second Floor, Arena Court, Crown Lane, Maidenhead, Berkshire, SL6 8QZ, England |
| BENNING-PRINCE, Nicholas Arthur Dawe, Mr. ACTIVE | Director | 15 Oct 2013 | | England | October 1974 | Second Floor, Arena Court, Crown Lane, Maidenhead, Berkshire, SL6 8QZ, England |
| DOWLEY, Robert Charles ACTIVE | Director | 09 Dec 2013 | | England | September 1972 | Second Floor, Arena Court, Crown Lane, Maidenhead, Berkshire, SL6 8QZ, England |
| GRETTON, Edward Alexander ACTIVE | Director | 02 Jun 2008 | | England | July 1970 | Second Floor, Arena Court, Crown Lane, Maidenhead, Berkshire, SL6 8QZ, England |
| QUILEZ SOMOLINOS, Alfredo ACTIVE | Director | 06 Sep 2021 | | England | July 1967 | Second Floor, Arena Court, Crown Lane, Maidenhead, Berkshire, SL6 8QZ, England |
| DRANSFIELD, Graham RESIGNED | Secretary | 10 Dec 2007 | 30 Jun 2008 | | | 18, Downs Hill, Beckenham, Kent, BR3 5HB |
| MOORE, Alexander Eric RESIGNED | Secretary | 30 Apr 1993 | 01 Aug 2006 | | | Crismill Barn Crismill Lane, Bearsted, Maidstone, Kent, ME14 4NT |
| TUNNACLIFFE, Paul Derek RESIGNED | Secretary | 01 Aug 2006 | 10 Dec 2007 | | | 6 Ashburnham Park, Esher, Surrey, KT10 9TW |
| TYSON, Roger Thomas Virley RESIGNED | Secretary | 31 Jul 2008 | 10 Mar 2016 | | | Hanson House, 14 Castle Hill, Maidenhead, SL6 4JJ |
| SISEC LIMITED RESIGNED | Nominee Secretary | | 30 Apr 1993 | | | 21 Holborn Viaduct, London, EC1A 2DY |
| BARTON, Eric Anthony RESIGNED | Director | | 19 Dec 1994 | England | April 1945 | Glendale 9 Harebell Hill, Cobham, Surrey, KT11 2RS |
| BECK, John Edward RESIGNED | Director | | 30 Jun 2006 | United Kingdom | May 1942 | Doves House Doves Lane, Whiteparish, Salisbury, Wiltshire, SP5 2SJ |
| CLARKE, David Jonathan RESIGNED | Director | 01 Jun 2011 | 01 Dec 2016 | England | February 1974 | Hanson House, 14 Castle Hill, Maidenhead, Berkshire, SL6 4JJ, England |
| DRANSFIELD, Graham RESIGNED | Director | 01 Jan 2007 | 30 Jun 2008 | England | March 1951 | 18, Downs Hill, Beckenham, Kent, BR3 5HB |
| FOLEY, Brian William RESIGNED | Director | | 01 Jan 2007 | United Kingdom | February 1956 | Haslemere Bailey Hill, Yorkley, Lydney, Gloucestershire, GL15 4RT |
| GRAY, Malcolm James RESIGNED | Director | | 20 Dec 1994 | | November 1944 | 15 Paterson Drive, Woodhouse Eaves, Loughborough, Leicestershire, LE12 8RL |
| GUYATT, Benjamin John RESIGNED | Director | 30 Sep 2010 | 01 Jun 2011 | United Kingdom | October 1975 | Hanson House, 14 Castle Hill, Maidenhead, SL6 4JJ |
| HIGGINS, Denis Dudley, Dr RESIGNED | Director | | 08 Nov 1994 | | May 1949 | Courtwood, Goatsfield Road, Tatsfield Westerham, Kent, TN16 2BU |
| HUNT, Anthony Francis RESIGNED | Director | | 19 Feb 1996 | | September 1946 | The Coach House, Hill Road, Wouldham, Kent, ME1 3RP |
| LECLERCQ, Christian RESIGNED | Director | 02 Jun 2008 | 31 Mar 2010 | England | September 1965 | Hanson House, 14 Castle Hill, Maidenhead, SL6 4JJ |
| MC GIBNEY, Alan RESIGNED | Director | | 01 Jan 2007 | | April 1953 | 236 Main Road, Broomfield, Chelmsford, Essex, CM1 7AW |
| MCARDLE, Gary Charles RESIGNED | Director | 01 Mar 2006 | 16 Jun 2008 | | October 1960 | 11a Grasmere Avenue, Harpenden, Hertfordshire, AL5 5PT |
| MOORE, Alexander Eric RESIGNED | Director | 01 Dec 1995 | 01 Jan 2007 | England | November 1945 | Crismill Barn Crismill Lane, Bearsted, Maidstone, Kent, ME14 4NT |
| MORRISH, Jonathan Peter, Dr RESIGNED | Director | 13 Jun 2008 | 30 Sep 2010 | United Kingdom | September 1970 | Hanson House, 14 Castle Hill, Maidenhead, SL6 4JJ |
| PATTISON, Graham Neil RESIGNED | Director | 13 Jul 2007 | 16 Jun 2008 | | June 1975 | 40 Oakdene Road, Sevenoaks, Kent, TN13 3HL |
| PIRINCCIOGLU, Seyda RESIGNED | Director | 19 Jul 2010 | 31 Aug 2013 | England | May 1971 | Hanson House, 14 Castle Hill, Maidenhead, SL6 4JJ |
| SINDEL, Alan Robert Harold RESIGNED | Director | 02 Jan 2007 | 14 Feb 2008 | | February 1965 | 1 Goldney Avenue, Clifton, Bristol, Avon, BS8 4RA |
| SINDEL, Alan Robert Harold RESIGNED | Director | 05 Jun 2006 | 01 Jan 2007 | | February 1965 | 1 Goldney Avenue, Clifton, Bristol, Avon, BS8 4RA |
| UREN, John Michael Leal RESIGNED | Director | | 01 Mar 2006 | England | September 1923 | Priory Farm, Appledore Road, Tenterden, Kent, TN30 7DD |
| WENDT, Carsten Matthias, Dr RESIGNED | Director | 01 Dec 2016 | 06 Sep 2021 | Germany | June 1976 | Hanson House, 14 Castle Hill, Maidenhead, SL6 4JJ |
| WHITEHEAD, Gary Nicholas RESIGNED | Director | 13 Jun 2008 | 30 Jun 2010 | United Kingdom | April 1970 | Hanson House, 14 Castle Hill, Maidenhead, SL6 4JJ |