| PALMER, Rachel Laureen ACTIVE | Secretary | 16 Mar 2023 | | | | Caxton Way, Thetford, Norfolk, IP24 3SQ |
| ADDISON, Neil ACTIVE | Director | 01 Jun 2014 | | United Kingdom | May 1967 | Caxton Way, Thetford, Norfolk, IP24 3SQ |
| JUNG, Udo Peter ACTIVE | Director | 15 Sep 2015 | | Germany | February 1966 | Trox Gmbh, Heinrich-Trox-Platz, Neukirchen-Vluyn, 47504, Germany |
| MOSBACHER, Thomas ACTIVE | Director | 27 Apr 2015 | | Germany | April 1966 | Trox Gmbh, Heinrich-Trox-Platz, 47504 Neukirchen-Vluyn, Germany |
| ARCHER, Suzanne Paula RESIGNED | Secretary | 22 Aug 2011 | 15 Mar 2023 | | | Caxton Way, Thetford, Norfolk, IP24 3SQ |
| BROWNE, Nigel John RESIGNED | Secretary | 01 Jul 1999 | 18 Jul 2003 | | | 17 Barnham Broom Road, Wymondham, Norfolk, NR18 0DF |
| LAKE, Peter Robert George RESIGNED | Secretary | | 30 Jun 1999 | | | Meadlands, Bridgham, Norwich, Norfolk, NR16 2AB |
| MCGILL, Rainer Francis RESIGNED | Secretary | 21 Jul 2003 | 15 Jun 2010 | | | Highfield House, The Street, Redgrave, Diss, Norfolk, IP22 1RW |
| RUSSELL, Michael RESIGNED | Secretary | 14 Sep 2010 | 12 Apr 2011 | | | Caxton Way, Thetford, Norfolk, IP24 3SQ |
| ARCHER, Suzanne Paula RESIGNED | Director | 22 Aug 2011 | 15 Mar 2023 | England | June 1972 | Caxton Way, Thetford, Norfolk, IP24 3SQ |
| BASNETT, Alan RESIGNED | Director | 07 Mar 2007 | 31 Dec 2009 | United Kingdom | September 1949 | 28 Ling Drive, Lightwater, Surrey, GU18 5PA |
| BAUER, Michael Heinrich RESIGNED | Director | 19 Aug 2014 | 08 Sep 2015 | Germany | May 1966 | Trox Gmbh, Heinrich-Trox-Platz, D-47504 Neukirchen-Vluyn, Germany |
| BOEKMANN, Ludger Bernhard RESIGNED | Director | 29 Oct 2013 | 06 Jun 2014 | Germany | October 1956 | Caxton Way, Thetford, Norfolk, IP24 3SQ |
| BOEKMANN, Ludger Bernhard RESIGNED | Director | 24 Sep 2009 | 30 Sep 2011 | Germany | October 1956 | 1, Pappel Allee 56, 47918, Toentsvorst, Germany |
| BREIDEN, Oliver RESIGNED | Director | 01 Jan 2001 | 31 Dec 2001 | | September 1969 | An Der Thomaskirche 50a, 40470 Dusseldorf, FOREIGN, Germany |
| BRINKMANN, Udo Gunter RESIGNED | Director | 02 Sep 2008 | 17 Sep 2012 | Germany | July 1953 | 64, Elisabethstrasse 64, Geldern, 47608, Germany |
| BROWNE, Nigel John RESIGNED | Director | 01 Jul 1999 | 18 Jul 2003 | England | December 1957 | 17 Barnham Broom Road, Wymondham, Norfolk, NR18 0DF |
| DIMKE, Joerg Reiner RESIGNED | Director | 01 Jan 2001 | 09 Sep 2003 | Germany | February 1949 | Schumannstrasse 6, Krefeld, 47800, Germany |
| DUSCHL, Konrad, Dr RESIGNED | Director | 01 Jan 2001 | 30 Sep 2002 | | December 1959 | Monnstrasse 10, 59320 Ennigerloh, Germany |
| EWEN, Elmar, Dr RESIGNED | Director | 03 Feb 2006 | 02 Sep 2008 | | April 1963 | Heinrich Trox Platz, Neukirchen Vluyn, 47504, Germany |
| FARTHING, Terry James RESIGNED | Director | | 23 Feb 2007 | England | March 1944 | 34 Horsecroft Road, Bury St Edmunds, Suffolk, IP33 2DY |
| FAWKNER, Robert Douglas RESIGNED | Director | 01 Jan 2013 | 17 Feb 2022 | England | April 1965 | Caxton Way, Thetford, Norfolk, IP24 3SQ |
| FRANZEN, Helmut Leonhard, Dr RESIGNED | Director | 01 Jan 2005 | 06 Jul 2009 | | June 1950 | Heinrich Trox Platz, Neukirchen Vluyn, 47504, Germany |
| FREUDENBERG, Manfred Konrad RESIGNED | Director | 15 Jun 1993 | 17 Jan 2001 | | March 1940 | Krefeld, Busenpfad 79a, 47802, Germany |
| GREEN, Alan Roy RESIGNED | Director | | 31 Aug 2000 | | October 1935 | Tudor Chimneys Fordham Lane, Westley, Bury St Edmunds, Suffolk, IP33 3TQ |
| HUBER, Bernd RESIGNED | Director | 01 Jan 2003 | 22 Aug 2006 | | October 1958 | Krevtzkampswiese 23, Selm, 59379, Germany |
| HUMPF, Thomas Stefan RESIGNED | Director | 01 Jul 2002 | 01 May 2006 | | July 1965 | Kathe Kollwitz Weg 3, D-40670 Neerbusch, Germany |
| JAGDT, Torsten Otto RESIGNED | Director | 01 Oct 2012 | 27 Apr 2015 | Germany | September 1969 | Caxton Way, Thetford, Norfolk, IP24 3SQ |
| JOHNSON, Peter Stanley RESIGNED | Director | 01 Jul 1999 | 13 Sep 2011 | England | January 1958 | Caxton Way, Thetford, Norfolk, IP24 3SQ |
| JORDAN, James Edward RESIGNED | Director | | 18 Dec 1995 | | September 1932 | 18 Sharp Road, Bury St Edmunds, Suffolk, IP33 2NB |
| KOCH, Karl RESIGNED | Director | 18 Dec 1995 | 31 Aug 2000 | | March 1938 | Friesenweg 18, Neukirchen Vluyn, Northrhine Westfalia 47506 Germany |
| LAKE, Peter Robert George RESIGNED | Director | | 30 Jun 1999 | | May 1936 | Meadlands, Bridgham, Norwich, Norfolk, NR16 2AB |
| LAMBOURN, Hugo Gavin RESIGNED | Director | 01 Jun 2014 | 13 Mar 2015 | England | December 1963 | Caxton Way, Thetford, Norfolk, IP24 3SQ |
| LEATHERBARROW, David RESIGNED | Director | 18 Dec 1995 | 28 Oct 2009 | United Kingdom | January 1950 | Pond House, Redgrave, Diss, Norfolk, IP24 1RW |
| MCGILL, Rainer Francis RESIGNED | Director | 21 Jul 2003 | 01 Sep 2010 | England | May 1954 | Highfield House, The Street, Redgrave, Diss, Norfolk, IP22 1RW |
| MULLER, Dirk, Prof. Dr. -Ing. RESIGNED | Director | 05 Jul 2011 | 01 Jul 2015 | Germany | August 1968 | Caxton Way, Thetford, Norfolk, IP24 3SQ |
| REUTER, Joachim Friedrich, Doctor RESIGNED | Director | 15 Jun 1993 | 01 Feb 2006 | | March 1941 | Boschheideweg 50, Moers, 47447, Germany |
| REUTER, Lutz RESIGNED | Director | 06 Jul 2009 | 07 Aug 2014 | Germany | March 1956 | 12, Am Keramikhof 12, 47626 Kevelaer, Germany |
| RUSSELL, Michael RESIGNED | Director | 14 Sep 2010 | 12 Apr 2011 | United Kingdom | December 1950 | Caxton Way, Thetford, Norfolk, IP24 3SQ |
| SAMS, Ian James RESIGNED | Director | 24 Sep 2009 | 29 Oct 2013 | England | December 1964 | Bickam, Halstead Road, Eight Ash Green, Colchester, CO6 3PX, England |
| SAYERS, Amanda RESIGNED | Director | 01 Jan 2005 | 15 Jun 2010 | England | May 1959 | Martins Nest Farmhouse, Thelnetham Diss, Norfolk, IP22 1JW |
| SCOFIELD, Peter Jennings RESIGNED | Director | | 30 Jun 1999 | | August 1936 | 10 Downham Crescent, Wymondham, Norfolk, NR18 0SF |
| SEIFERT, Oliver Otto RESIGNED | Director | 01 Jul 2015 | 31 Aug 2015 | Germany | June 1969 | Trox Gmbh, Heinrich-Trox-Platz, 47504 Neukirchen-Vluyn, Germany |
| TARADA, Fathi, Dr RESIGNED | Director | 01 Jun 2000 | 28 Jun 2002 | | March 1963 | 20 Foxglove Road, Thetford, Norfolk, IP24 2XF |
| TROX, Heinz Friedrich Carston RESIGNED | Director | | 28 Jun 2002 | | June 1934 | 4133 Neukirchen Vluyn, Waldmunnsveg 41, Germany |
| WENDEN, Paul Charles Peter RESIGNED | Director | 16 Jul 2012 | 31 Jul 2013 | England | June 1961 | Caxton Way, Thetford, Norfolk, IP24 3SQ |