| ASHTON, Daniel Mark, Mr. ACTIVE | Director | 17 Mar 2025 | | England | June 1978 | East Golds Works, Kingsteignton Road, Newton Abbot, TQ12 2PA, England |
| BURFEIND, Arne, Mr. ACTIVE | Director | 01 Apr 2026 | | Germany | April 1972 | Sibelco Talke, West Avenue, Talke, Stoke On Trent, ST7 1TU, England |
| LOIX, Benny Jozef Maria ACTIVE | Director | 13 Apr 2021 | | Belgium | November 1967 | Plantin & Moretuslei, 1a - 2018, Antwerp, Belgium |
| MORDOVCHENKO, Elena ACTIVE | Director | 01 Apr 2026 | | France | July 1971 | Sibelco Talke, West Avenue, Talke, Stoke On Trent, ST7 1TU, England |
| UPHILL, Benjamin Mark, Mr. ACTIVE | Director | 17 Mar 2025 | | England | January 1978 | East Golds Works, Kingsteignton Road, Newton Abbot, TQ12 2PA, England |
| BOWDEN, David Bertram RESIGNED | Secretary | | 27 May 1993 | | | Herongate Lower Street, Dittisham, Dartmouth, Devon, TQ6 0HY |
| FORREST, Chantal Benedicte RESIGNED | Secretary | 21 Feb 2002 | 31 Jul 2008 | | | Spoutfield Barn, Triangle, Sowerby Bridge, West Yorkshire, HX6 3DU |
| HOLYOAK, Ian David RESIGNED | Secretary | 01 Jan 2001 | 21 Feb 2002 | | | Edgemoor, Avenue Road, Bovey Tracey, Devon, TQ13 9BX |
| WATTS, William John Christopher RESIGNED | Secretary | 27 May 1993 | 31 Dec 2000 | | | 2 Canons Close, Bishopsteignton, Teignmouth, Devon, TQ14 9RU |
| ASH, Eric RESIGNED | Director | | 20 Dec 1995 | | December 1931 | Star Parke, Knowle Road, Lustleigh, Devon, TQ13 9SP |
| BECKETT, Michael Ernest RESIGNED | Director | | 31 Dec 2006 | | August 1936 | Northcroft, Dulwich Common, London, SE21 7EW |
| BOENS, Laurence RESIGNED | Director | 12 Sep 2012 | 29 Apr 2022 | Belgium | November 1959 | Brookside Hall, Congleton Road,, Sandbach, Cheshire, CW11 4TF |
| BOWDEN, David Bertram RESIGNED | Director | | 24 May 1996 | | May 1938 | Herongate Lower Street, Dittisham, Dartmouth, Devon, TQ6 0HY |
| BROWN, Wilson Dyet RESIGNED | Director | 25 Jul 2002 | 31 May 2006 | Scotland | May 1947 | 22 Dollarbeg Park, Dollar, Clackmannanshire, FK14 7LJ |
| CUTBUSH, Thomas Charles RESIGNED | Director | 01 Jan 2007 | 01 Jan 2015 | Belgium | February 1955 | Brookside Hall, Congleton Road,, Sandbach, Cheshire, CW11 4TF |
| DANIELS, Adam Bradley RESIGNED | Director | 29 Apr 2022 | 17 Mar 2025 | England | April 1985 | Sibelco Talke, West Avenue, Talke, Stoke On Trent, ST7 1TU, England |
| DECAT, Kurt Jean-Emile Elise RESIGNED | Director | 01 Mar 2015 | 01 Apr 2021 | Belgium | June 1965 | Brookside Hall, Congleton Road, Arclid, Sandbach, Cheshire, CW11 4TF, England |
| DELEERSNYDER, Jean-Luc Andre Victor RESIGNED | Director | 06 Jul 2006 | 31 Aug 2020 | Belgium | May 1961 | Brookside Hall, Congleton Road,, Sandbach, Cheshire, CW11 4TF |
| DESLYPERE, Frédéric RESIGNED | Director | 29 Apr 2022 | 31 Mar 2026 | Belgium | April 1962 | Plantin En Moretuslei 1a, Plantin En Moretuslei 1a, 2018 Antwerpen, Belgium |
| EMSENS, Jacques RESIGNED | Director | 31 Dec 1993 | 25 Jun 2019 | Belgium | August 1963 | Brookside Hall, Congleton Road,, Sandbach, Cheshire, CW11 4TF |
| EMSENS, Stanislas RESIGNED | Director | | 31 Dec 2001 | | March 1926 | Walter Emsens Straat 4, 3900 Lommel, FOREIGN, Belgium |
| FORREST, Chantal Benedicte RESIGNED | Director | 12 Mar 2008 | 31 Jul 2008 | England | January 1961 | Spoutfield Barn, Triangle, Sowerby Bridge, West Yorkshire, HX6 3DU |
| GARGOUR, Gilbert Nicholas RESIGNED | Director | | 31 Dec 1993 | | July 1943 | La Bastide St Paul, 456 Chemin, Des Allegres, 06480 La Calle Sur Loup, France |
| GROLL, Eckart RESIGNED | Director | | 31 Jan 1998 | | January 1933 | Lohrgrasse 2, D 65549 Limburg, Germany |
| GROSSPETER, Horst RESIGNED | Director | | 01 May 1995 | | March 1940 | Donaweg 33, 5000 Koln Jundersdorf, Germany |
| HERREMANS, Jean Louis RESIGNED | Director | 12 Sep 2012 | 01 Mar 2015 | Belgium | July 1963 | Brookside Hall, Congleton Road,, Sandbach, Cheshire, CW11 4TF |
| HERREMANS, Jean Louis RESIGNED | Director | 12 Mar 2008 | 25 Jun 2008 | | July 1963 | Rue Henry, Berge 47, Brussels, 1030, Belgium |
| HIGGS, Michael Ruston RESIGNED | Director | 26 Sep 2002 | 31 Dec 2007 | United Kingdom | August 1953 | 24, Dark Lane, Kinver, Stourbridge, West Mids, DY76JB, United Kingdom |
| HILLEBRAND, Gerhard RESIGNED | Director | 11 Dec 1998 | 31 Dec 2006 | | February 1952 | Hollyhocks, Old Chester Road, Barbridge, Nantwich, Cheshire, CW5 6AY |
| JAMES, Mark Christopher RESIGNED | Director | 12 Mar 2008 | 31 Mar 2026 | England | March 1959 | Sibelco Talke, West Avenue, Talke, Stoke On Trent, ST7 1TU, England |
| JEWSON, Richard Wilson, Sir RESIGNED | Director | 01 May 2004 | 31 Jul 2007 | United Kingdom | August 1944 | Dades Farm, Barnham Broom, Norwich, Norfolk, NR9 4BT |
| LAWSON, Graham Bernard, Dr RESIGNED | Director | 01 May 1995 | 11 Jul 2002 | | May 1942 | Picton Weydown Road, Haslemere, Surrey, GU27 1DS |
| LENTON, Aylmer Ingram RESIGNED | Director | | 24 Dec 1993 | | May 1927 | Robin Hill Hockett Lane, Cookham Dean, Maidenhead, Berkshire, SL6 9UF |
| LESSER, Frederick Alan Simon RESIGNED | Director | 24 Dec 1993 | 10 May 2002 | | December 1932 | 2 Rue Alexandre Bertereau, Nevilly Sur Seine, 92200, France |
| MATTHEWSON, Howard James RESIGNED | Director | 08 Dec 2000 | 21 May 2002 | England | January 1958 | 8 Walnut Close, Dean Row, Wilmslow, Cheshire, SK9 2SA |
| MITCHELL, Dennis RESIGNED | Director | | 30 Dec 1995 | United Kingdom | December 1930 | 2 Old Manor Close, Ashburton, Newton Abbot, Devon, TQ13 7JF |
| MORENO DIAZ, Felix RESIGNED | Director | 12 Sep 2012 | 31 Dec 2019 | Belgium | March 1962 | Brookside Hall, Congleton Road,, Sandbach, Cheshire, CW11 4TF |
| PIKE, Claude Drew RESIGNED | Director | | 27 Jul 1995 | | July 1915 | Dunderdale Lawn Penshurst Road, Newton Abbot, Devon, TQ12 1EN |
| PIKE, John Drew RESIGNED | Director | | 03 Apr 2001 | England | September 1947 | Heathercombe, North Manaton, Newton Abbot, Devon, TQ13 9XE |
| ROBERTSON, Timothy Patrick Vyvyan RESIGNED | Director | | 30 Jun 1998 | | November 1943 | Mapstone, Lustleigh, Newton Abbot, Devon, TQ13 9SE |
| SHUTTLEWORTH, Ronald RESIGNED | Director | 01 Aug 1996 | 01 Oct 2003 | | September 1945 | 11 Wychwood Park, Weston, Crewe, Cheshire, CW2 5GP |
| SPEECKAERT, Alain RESIGNED | Director | 25 Jul 2002 | 27 Jul 2010 | Belgium | January 1949 | Brookside Hall, Congleton Road,, Sandbach, Cheshire, CW11 4TF |
| TAWNEY, Christopher RESIGNED | Director | 16 Feb 2001 | 31 Mar 2007 | United Kingdom | July 1957 | The White House, Easton Royal, Pewsey, Wiltshire, SN9 5LY |
| TORRES, Francisco Fernando Fernandez RESIGNED | Director | 01 Jun 2002 | 14 May 2004 | | November 1949 | C/Juan Pablos 4, Esc 3 2oe, Seville, 41013, FOREIGN, Spain |
| VAN PUT, John Willem RESIGNED | Director | 01 Jan 2015 | 29 Apr 2022 | Netherlands | November 1962 | Brookside Hall, Congleton Road, Arclid, Sandbach, Cheshire, CW11 4TF, England |
| VINCK, Karel Clement Jozef RESIGNED | Director | 03 May 2000 | 01 Sep 2002 | | September 1938 | Sint Hubertusdreef 39, B-1900 Overijse, FOREIGN, Belgium |
| YOUNG, Michael Robert, Dr RESIGNED | Director | 24 May 1996 | 28 Feb 2001 | United Kingdom | October 1947 | Palm Cross Green House, Modbury, Devon, PL21 0QZ |