| HARVEY, Rhian Amanda ACTIVE | Secretary | 01 Nov 2022 | | | | 3rd Floor, 45 Albemarle Street, Mayfair, London, W1S 4JL, England |
| GHYOOT, Wouter Rene Yvonne, Dr ACTIVE | Director | 16 Dec 2021 | | Belgium | April 1969 | 3rd Floor, 45 Albemarle Street, Mayfair, London, W1S 4JL, England |
| SOUTHWOOD EDWARDS, Jennifer ACTIVE | Director | 05 Nov 2024 | | England | April 1976 | 3rd Floor, 45 Albemarle Street, Mayfair, London, W1S 4JL, England |
| CLARK, Bryce RESIGNED | Secretary | | 28 Jan 1997 | | | 18 Warwick Road, Southend On Sea, Essex, SS1 3BN |
| HAWKINS, Michael Joseph, Doctor RESIGNED | Secretary | 12 Jun 1997 | 22 Nov 2006 | | | 73 Smithbarn, Horsham, West Sussex, RH13 6DT |
| PORRI, Isabelle Pascale RESIGNED | Secretary | 01 Jul 2020 | 01 Nov 2022 | | | 18, Jeffries Passage, Guildford, Surrey, GU1 4AP |
| UHLIG, Heinz Wolfgang RESIGNED | Secretary | 11 Feb 1997 | 12 Jun 1997 | | | 67 Lower Teddington Road, Hampton Wick, Kingston Upon Thames, Surrey, KT1 4HQ |
| WEIGHT, David Lyndon RESIGNED | Secretary | 22 Nov 2006 | 30 Jun 2020 | | | 18, Jeffries Passage, Guildford, Surrey, GU1 4AP, England |
| AFSAHI, Mohamed Amine RESIGNED | Director | 30 Oct 2018 | 13 Jan 2020 | Switzerland | April 1970 | 18, Jeffries Passage, Guildford, Surrey, GU1 4AP |
| AKALAY, Ismail, Dr RESIGNED | Director | 18 May 2004 | 29 Oct 2018 | Morocco | June 1958 | 18, Jeffries Passage, Guildford, Surrey, GU1 4AP, England |
| ATUNDO, Liongo RESIGNED | Director | | 21 May 1996 | | September 1948 | Building Geca Mines, Boulevard Du 30 Juin, Kirshasa, Zaire, FOREIGN |
| BEBOUT, David RESIGNED | Director | | 08 May 1995 | | September 1941 | 20975 Fairmount Boulevard, Shaker Heights, Ohio 44118, FOREIGN, Usa |
| BENJAMIN, Paul RESIGNED | Director | 27 Oct 2011 | 31 Oct 2012 | Singapore | April 1974 | 167 High Street, Guildford, Surrey, GU1 3AJ |
| BENYAKHLEF, Rachid RESIGNED | Director | 05 Oct 1999 | 15 May 2001 | | April 1957 | 52 Avenue Hessan Ii, Casablanca, 20000, Morocco |
| BENZ, Mark Robert RESIGNED | Director | 10 Oct 1995 | 03 Mar 1998 | | September 1955 | A2408-39a Avenue, Edmonton, Alberta, T6j 0p3, Canada |
| BROWN, Stephen Colin Ryall RESIGNED | Director | 13 Oct 2004 | 08 Jun 2010 | Usa | October 1958 | 134 Marcel Drive, Dingmans Ferry, Pa 18328, Usa |
| CAMPBELL, Christopher Michael RESIGNED | Director | | 15 May 2001 | | September 1962 | 27 Dublin Street, Clayfield, Brisbane, QLD 4011, Australia |
| CHEN, Guang Yu RESIGNED | Director | 17 May 2005 | 03 Nov 2009 | China | August 1963 | No. 725, Rm 201, South Hubin Road, Xiamen, Fujian, 361004, China |
| CHERIF, Mourad RESIGNED | Director | | 08 May 1995 | | March 1945 | 9 Allee Des Mimosas, Anta, Casablanca, Moroccan |
| CHIHARA, Hirosuke RESIGNED | Director | 30 Sep 1997 | 23 May 2000 | | December 1945 | 3-16-6 Shimotakaido Sugimami-Ku, Tokyo, Japan, FOREIGN |
| CHIRGWIN, Alan Kevin RESIGNED | Director | 08 Jun 2010 | 27 Oct 2011 | Singapore | March 1967 | 167 High Street, Guildford, Surrey, GU1 3AJ |
| COCHRANE, James RESIGNED | Director | 18 Nov 2003 | 13 Oct 2004 | | April 1964 | 32 A Riva Paradiso Appt 242, Lugano, Switzerland |
| DARRE, Bernard RESIGNED | Director | | 13 May 2002 | | November 1939 | 4900 Beech Street, Cincinnati, Ohio, FOREIGN, Usa |
| DAVIDSON, Gillian, Dr RESIGNED | Director | 14 May 2019 | 13 Jan 2020 | Scotland | November 1971 | 18, Jeffries Passage, Guildford, Surrey, GU1 4AP |
| DAY, Martyn David RESIGNED | Director | 21 May 1996 | 25 May 1999 | | July 1955 | PO BOX N-7539, Norfolk House, Frederick Street Nassau, The Bahamas |
| DRINKWATER, Kevin Wilfred RESIGNED | Director | 30 Oct 2008 | 29 May 2012 | Canada | July 1961 | 167 High Street, Guildford, Surrey, GU1 3AJ |
| DUNMEAD, Stephen Donald, Dr RESIGNED | Director | 18 Nov 2003 | 21 May 2013 | Usa | April 1963 | 167 High Street, Guildford, Surrey, GU1 3AJ |
| DYASON, Gavin J RESIGNED | Director | 18 May 2004 | 05 Nov 2013 | Belgium | March 1952 | 18, Jeffries Passage, Guildford, Surrey, GU1 4AP, England |
| ELLIOTT, David Hume RESIGNED | Director | 12 May 2009 | 13 Jan 2020 | United States | January 1962 | 18, Jeffries Passage, Guildford, Surrey, GU1 4AP, England |
| ELLIOTT, David Hume RESIGNED | Director | 17 Sep 1998 | 18 May 2004 | | January 1962 | 1375 Stavebank Road, Mississauga Ontario L5g 2va, Canada, FOREIGN |
| ENOKI, Akari RESIGNED | Director | | 30 Sep 1997 | | February 1937 | 3-13-16, Chuou, Kasukabe-Shi, Saitamaken, FOREIGN, Japan |
| ETHIER, Guy RESIGNED | Director | 27 Oct 2017 | 16 Dec 2021 | Belgium | August 1955 | 18, Jeffries Passage, Guildford, Surrey, GU1 4AP |
| GAUTIER, Pierre-Alain RESIGNED | Director | 14 May 2019 | 13 Jan 2020 | France | June 1976 | 18, Jeffries Passage, Guildford, Surrey, GU1 4AP |
| GELLENS, Luc RESIGNED | Director | 17 Sep 1998 | 27 Oct 2005 | | January 1956 | Egelspoelstraat 31, 2340, Beerse, Belgium |
| GIBBS, Hugh Wynn, Dr RESIGNED | Director | 23 Oct 2014 | 10 May 2016 | England | April 1953 | 18, Jeffries Passage, Guildford, Surrey, GU1 4AP |
| GREEN, Jeffery RESIGNED | Director | 23 Oct 2014 | 16 May 2017 | Usa/Michigan | July 1976 | 18, Jeffries Passage, Guildford, Surrey, GU1 4AP |
| GRIES, Benno, Doctor RESIGNED | Director | 30 Sep 1997 | 13 May 2003 | | March 1958 | 1m Schleeke 78-91, Goslar D-38642, Germany, FOREIGN |
| GULLBERG, Nils Jesper RESIGNED | Director | 12 Oct 2006 | 28 Oct 2010 | Sweden | June 1967 | Artvagen 13, Sandviken, 81162, Sweden |
| GUNDERMANN, Philippe RESIGNED | Director | 18 May 2004 | 28 Feb 2007 | | December 1968 | 16, Rue Henri Revoy, Saint Martin D'Heres, F-38400, France |
| HARSHAW, Stuart Alan RESIGNED | Director | 21 May 2013 | 20 May 2014 | Canada/Ontario | May 1967 | 167 High Street, Guildford, Surrey, GU1 3AJ |
| HENNIG, John RESIGNED | Director | 29 May 2012 | 21 May 2013 | Canada | April 1959 | 167 High Street, Guildford, Surrey, GU1 3AJ |
| HISSHION, Daniel RESIGNED | Director | 23 May 2000 | 13 May 2002 | | September 1966 | 39c Narra St, Subic Homes Binicttcan, Sbma Subic Bay, Zambales 2222, Philippines |
| HSU, William, Dr RESIGNED | Director | 17 May 2005 | 30 Oct 2008 | | April 1948 | 1422 Beechwood Blvd, Pittsburgh, Pennsylvania, 15217, Usa |
| JEANPETIT, Philippe RESIGNED | Director | 28 Feb 2007 | 27 Oct 2011 | France | January 1974 | 17, Rue Des Chamois, Voiron, 38500, France |
| JONES, Francis Gary RESIGNED | Director | 20 May 2014 | 31 Oct 2024 | United Kingdom | February 1968 | 3rd Floor, 45 Albemarle Street, Mayfair, London, W1S 4JL, England |
| KEMP, Neil M RESIGNED | Director | | 08 May 1995 | | January 1934 | 5 John Lydas Road, Markham, Ontario, FOREIGN, Canada |
| KIELTY, Edward R RESIGNED | Director | 08 May 1995 | 17 Sep 1998 | | March 1945 | The Hall Chemical Company, 28960 Lakeland Boulevard, Wickliffe Ohio, 44092-0200, Usa |
| KOELEMAN, Jacobus Martinus Leonardus RESIGNED | Director | 25 May 1999 | 18 May 2004 | | April 1938 | 9 Rue Andre Sibellas, Grenoble 38042 Isere, France, FOREIGN |
| KUBOTA, Takeshi RESIGNED | Director | 24 Oct 2002 | 16 Oct 2007 | | August 1954 | 1-30-3 Denenchofu, Ota-Ku, Tokyo, 145-0071, FOREIGN, Japan |
| KYAMITALA, Umba RESIGNED | Director | 13 Oct 1992 | 10 Oct 1995 | | February 1937 | Boulevard Du Souverain 30-32, B-1170 Bruicelles, Belgium |
| LAVERTY, Bruce RESIGNED | Director | 06 Aug 2024 | 17 Mar 2025 | Canada | January 1962 | 3rd Floor, 45 Albemarle Street, Mayfair, London, W1S 4JL, England |
| LAZAAR, Mohamed RESIGNED | Director | 26 May 1998 | 05 Oct 1999 | | July 1954 | 47 Bis Rue De Rome, Residence Fadila 3, Casablanca, FOREIGN, Morocco |
| LEYSEN, Thomas Andre RESIGNED | Director | 02 May 1994 | 17 Sep 1998 | | October 1960 | Dennenlaan 9a, B 2020 Antwerp, FOREIGN, Belgium |
| LITZINGER, Kristina Janet RESIGNED | Director | 29 May 2012 | 13 Jan 2020 | Canada | October 1969 | 18, Jeffries Passage, Guildford, Surrey, GU1 4AP, England |
| LOWE, Jack David RESIGNED | Director | 21 May 2013 | 24 Jun 2024 | United Kingdom | June 1955 | 3rd Floor, 45 Albemarle Street, Mayfair, London, W1S 4JL, England |
| LUNDAHL, Ulf Lars Olof RESIGNED | Director | 29 May 2012 | 23 Oct 2014 | Sweden | June 1962 | 18, Jeffries Passage, Guildford, Surrey, GU1 4AP, England |
| MAJKA, Marc Stephane RESIGNED | Director | 19 May 2015 | 31 Oct 2016 | France | April 1963 | 18, Jeffries Passage, Guildford, Surrey, GU1 4AP |
| MARTIN, Robert RESIGNED | Director | 08 May 2007 | 29 May 2012 | United States | August 1956 | 167 High Street, Guildford, Surrey, GU1 3AJ |
| MAZEMBA, Kitangu, Chairman RESIGNED | Director | 23 May 2000 | 13 May 2002 | | February 1953 | 1559 Kamanyola, Lubumbashi, Katanga Bp450, Congo Demcr |
| MBAKA, Kawaya RESIGNED | Director | 30 Sep 1997 | 25 May 1999 | | May 1949 | Lubumbashi, Lubumbashi, Katanga, Dem. Rep. Congo |
| MCCARTHY, Adam Ian, Dr RESIGNED | Director | 27 Oct 2017 | 13 Jan 2020 | Belgium | June 1976 | 18, Jeffries Passage, Guildford, Surrey, GU1 4AP |
| MCCURDY, Shaun RESIGNED | Director | 08 Jun 2010 | 27 Oct 2011 | Canada | September 1962 | 167 High Street, Guildford, Surrey, GU1 3AJ |
| MCCURDY, Shaun RESIGNED | Director | 16 May 2006 | 08 May 2007 | | September 1962 | 2369 Devon Road, Oakville, Ontario, L6J 5R6, Canada |
| MCINTYRE, David, Vice President Marketing RESIGNED | Director | 16 Oct 2007 | 03 Nov 2009 | Canada | June 1963 | 51 High Oak Trail, Richmond Hill, Ontario, Lye 3l0, Canada |
| MCSWEENEY, Roger RESIGNED | Director | 23 May 2000 | 13 Oct 2004 | | October 1953 | 11 Highfields Grove, Fitzroy Park Highgate, London, N6 6HN |
| MEHAN, Arun RESIGNED | Director | 17 May 2011 | 31 Oct 2012 | Usa | January 1949 | 167 High Street, Guildford, Surrey, GU1 3AJ |
| MHAMDI, Jamal Iddine RESIGNED | Director | 08 May 1995 | 26 May 1998 | | May 1958 | 8 Rue Arrouani, Oasis, Casablanca, Morocco, FOREIGN |
| MINUTH, Klaus-Peter, Dr RESIGNED | Director | | 30 Sep 1997 | | March 1938 | Herman C Starck & Co Inc, Elizabethstrasse 14, Dusseldore, Germany |
| MITTENZWEI, Volker RESIGNED | Director | 30 Oct 2008 | 13 Jan 2020 | Germany | February 1964 | 18, Jeffries Passage, Guildford, Surrey, GU1 4AP, England |
| MOONEY, James Percival, President & Ceo RESIGNED | Director | | 13 May 2003 | | December 1947 | 2410 Pebble Brook, Westlake, Ohi0 44145, Usa |
| MORGAN, David John Ellis RESIGNED | Director | 15 May 2001 | 05 Nov 2013 | Singapore | December 1964 | 14 Chancery Hillrd, \ 01-01, Chancery Gdn, Singapore, FOREIGN, Singapore |
| MORRIS, Larry Arthur RESIGNED | Director | | 17 Sep 1998 | | September 1937 | 111 Calvin Chambers Road, Thornhill, Ontario, FOREIGN, Canada |
| MORRIS, Robert Allan RESIGNED | Director | 03 Nov 2009 | 21 May 2013 | Japan | July 1963 | 167 High Street, Guildford, Surrey, GU1 3AJ |
| MOUNIER-VEHIER, Marc Patrick Jean RESIGNED | Director | 27 Oct 2011 | 19 May 2015 | France | April 1970 | 18, Jeffries Passage, Guildford, Surrey, GU1 4AP, England |
| MUNNIK, Edward John RESIGNED | Director | 24 Oct 2002 | 18 Nov 2003 | | September 1960 | 9 Koumboka Drive, Kitwe, Zambia, FOREIGN, Zambia |
| MUTAMBO, George Lytton RESIGNED | Director | 13 Sep 1993 | 08 May 1995 | | February 1948 | P O Box 30048, Lusaica, 10101, Zambia |
| MUTATI, Urbano Mulenga RESIGNED | Director | 08 May 1995 | 23 May 2000 | | April 1953 | 13 Dunduza Chisidza Crescent, Longacres, Lusaka, Zambia, FOREIGN |
| NILSSON, Mats Olof RESIGNED | Director | 16 May 2006 | 12 Oct 2006 | | February 1942 | Vintersbrinksvagen 25, Saltsjobaden, 13332, Sweden |
| NOZAKI, Akira RESIGNED | Director | 16 Oct 2007 | 28 Oct 2010 | Japan | June 1960 | 29-15 Yawata 6-Chome, Ichikawa-Shi, Chiba-Ken 272-0021, Japan |
| OHYAMA, Masanori RESIGNED | Director | 10 May 2016 | 13 Jan 2020 | Japan | September 1962 | 18, Jeffries Passage, Guildford, Surrey, GU1 4AP |
| PIHLAJA, Heikki Eerikki RESIGNED | Director | 27 Oct 2017 | 13 Jan 2020 | Finland | March 1968 | 18, Jeffries Passage, Guildford, Surrey, GU1 4AP |
| PLATONOVA, Galina RESIGNED | Director | 13 Oct 2004 | 12 Oct 2006 | | August 1964 | Usadba Centre,, 22 Voznesensky Per., Moscow, 125993, Russia |
| RILEY, Devlin Howard RESIGNED | Director | 10 May 2016 | 22 May 2018 | United States | February 1971 | 18, Jeffries Passage, Guildford, Surrey, GU1 4AP |
| ROBBERTZE, Gert Johannes RESIGNED | Director | 05 Oct 1999 | 24 Oct 2002 | | January 1943 | 56 Main Street, PO BOX 62379, Marsmalltown, 2107, South Africa |
| ROCHON, Brent RESIGNED | Director | 13 May 2003 | 08 May 2007 | | June 1962 | 143 Auburn Court, Courtice Ont, Ontario, Lie 2e9, Canada |
| ROMANCE, Todd RESIGNED | Director | 13 May 2003 | 18 Nov 2003 | | March 1957 | 9504 Greystone Pkwy, Brecksville, Ohio, 44141, Usa |
| SAKALA, Alfred Mwazanti RESIGNED | Director | | 13 Sep 1993 | | September 1943 | Zccm Ltd, Box 30048, Lusaka, Zambia, FOREIGN |
| SALATHIEL, Peter B RESIGNED | Director | 08 May 1995 | 31 Dec 1996 | | November 1940 | 1079 Tanglewood Court, Oakville, Ontario L6l 5h6 |
| SAP, Bart Yvonne Jozef RESIGNED | Director | 21 May 2013 | 27 Oct 2017 | Belgium | February 1978 | 18, Jeffries Passage, Guildford, Surrey, GU1 4AP, England |
| SASSOON, David RESIGNED | Director | | 13 May 2003 | | March 1942 | 12 Port Des Champs, Ch 1073, Savygny, Switzerland |
| SCHAEFER, James RESIGNED | Director | 15 May 2001 | 13 May 2002 | | April 1950 | 23550 Shelburne Road, Shaker Heights, Ohio 44122, Usa |
| SEWERYN, Thomas P RESIGNED | Director | 17 Sep 1998 | 15 May 2001 | | January 1946 | 240 Foxhollow Drive 209, Mayfield Hgts 44124, Ohio, Usa |
| SHEA, Brian John RESIGNED | Director | | 10 Oct 1995 | | September 1949 | 56c West Avenue, Toronto, Ontario, FOREIGN, Canada |
| SHEPHERD, Michael John, Dr RESIGNED | Director | 31 Oct 2016 | 13 Jan 2020 | United Kingdom | July 1958 | 18, Jeffries Passage, Guildford, Surrey, GU1 4AP |
| SHEPHERD, Thomas Lee RESIGNED | Director | 13 May 2002 | 20 May 2014 | United States | May 1963 | 6 Weebetook Lane, Hamilton County, Cincinnati, Ohio, OH 45208, United States |
| SHUMBA, Maxwell, Dr RESIGNED | Director | 22 May 2018 | 13 Jan 2020 | United States | March 1966 | 18, Jeffries Passage, Guildford, Surrey, GU1 4AP |
| SOUTHGATE, Anthony Daniel RESIGNED | Director | 27 Oct 2011 | 19 May 2015 | England | February 1972 | 18, Jeffries Passage, Guildford, Surrey, GU1 4AP, England |
| TAARLAND, Tor Eric RESIGNED | Director | 29 Oct 2015 | 13 Jan 2020 | Switzerland | September 1978 | 18, Jeffries Passage, Guildford, Surrey, GU1 4AP |
| TAKEUCHI, Shigeru RESIGNED | Director | 23 May 2000 | 24 Oct 2002 | | April 1950 | Park Hills K-703, 553-1 Shinano, Totssuka-Ku, Yokohama-City, Japan |
| TAN, Chai Geok RESIGNED | Director | 13 Oct 2004 | 30 Oct 2008 | | November 1958 | 167 Yorkview Drive, Toronto, Ontario M2r 1k2, Canada |