| BURA, Laszlo, Dr ACTIVE | Secretary | 27 Jun 2002 | | | | C/O Mercer & Hole, The Pinnacle, 170 Midsummer Boulevard, Milton Keynes, MK9 1BP, England |
| HOCKEN, Brian Ernest ACTIVE | Director | 23 Jan 2001 | | England | January 1944 | C/O Mercer & Hole, The Pinnacle, 170 Midsummer Boulevard, Milton Keynes, MK9 1BP, England |
| JULINKOVA, Dagmar ACTIVE | Director | 20 Jun 2024 | | Czech Republic | August 1976 | C/O Mercer & Hole, The Pinnacle, 170 Midsummer Boulevard, Milton Keynes, MK9 1BP, England |
| KARASALI, Eleni ACTIVE | Director | 20 Jun 2024 | | Greece | October 1965 | C/O Mercer & Hole, The Pinnacle, 170 Midsummer Boulevard, Milton Keynes, MK9 1BP, England |
| MATHIEU, Frederique ACTIVE | Director | 20 Jun 2024 | | France | June 1970 | C/O Mercer & Hole, The Pinnacle, 170 Midsummer Boulevard, Milton Keynes, MK9 1BP, England |
| PATRIAN, Bruno ACTIVE | Director | 23 Jun 2023 | | Switzerland | January 1968 | C/O Mercer & Hole, The Pinnacle, 170 Midsummer Boulevard, Milton Keynes, MK9 1BP, England |
| PLUMB, Andrew ACTIVE | Director | 23 Jun 2023 | | England | June 1971 | C/O Mercer & Hole, The Pinnacle, 170 Midsummer Boulevard, Milton Keynes, MK9 1BP, England |
| DE RIJK, Theo RESIGNED | Secretary | 18 Jun 2015 | 18 Jun 2015 | | | 230, P.O. Box, 6700 Ae Wageningen, Netherlands |
| MARTIJN, Albertus RESIGNED | Secretary | | 23 Jun 2001 | | | 'T Gotink 7, 7261 Ve Ruueco, Netherlands |
| MULLER, Markus Daniel, Dr RESIGNED | Secretary | 23 Jun 2001 | 27 Jun 2003 | | | Swiss Federal Research Station, Wadenswil, Ch-8820, Switzerland |
| BENKE, Lajos RESIGNED | Director | 23 Jun 2023 | 20 Jun 2024 | Hungary | December 1958 | C/O Mercer & Hole, The Pinnacle, 170 Midsummer Boulevard, Milton Keynes, MK9 1BP, England |
| BENKE, Lajos, Dr RESIGNED | Director | 18 Jun 2015 | 20 Jun 2018 | Hungary | December 1958 | 17 Claygate Avenue, Harpenden, Hertfordshire, AL5 2HE |
| BENKE, Lajos, Dr RESIGNED | Director | 23 Jun 2014 | 18 Jun 2015 | Hungary | December 1958 | 17 Claygate Avenue, Harpenden, Hertfordshire, AL5 2HE |
| BONTOYAN, Warren Roberts RESIGNED | Director | | 11 Jun 2009 | | August 1932 | 50 Harry S Truman Pky, Annapolis Maryland 21401, United States Of America, FOREIGN |
| BOSSHARDT, Haros Paul RESIGNED | Director | | 25 May 1996 | | June 1936 | Swiss Federal Agric Rescroft Station, Ch-8820, Wadenswil, FOREIGN, Switzerland |
| CARDEAL DE OLIVEIRA, Maria Celeste RESIGNED | Director | 23 Jun 2023 | 30 Jun 2026 | Brazil | June 1952 | C/O Mercer & Hole, The Pinnacle, 170 Midsummer Boulevard, Milton Keynes, MK9 1BP, England |
| CARDEAL DE OLIVEIRA, Maria Celeste RESIGNED | Director | 14 Jun 2012 | 15 Jun 2021 | Brazil | June 1952 | 155, Apto 72, Rua Patapio Silva, Sao Paulo, Brazil, 05436-010, Brazil |
| CHEN, Tiechun RESIGNED | Director | 20 Jun 2018 | 22 Jun 2023 | China | April 1963 | 22 Building, Maizidian Street, Chaoyang District, Beijing 100125, China |
| DE AGUILA, Elizabeth Carranza RESIGNED | Director | 18 Jun 2015 | 15 Jun 2021 | El Salvador | February 1951 | Canton El Matazono, Soyapango, Aparto Postal 01-189, San Salvador, El Salvador |
| DE RIJK, Theo RESIGNED | Director | 18 Jun 2015 | 10 Jun 2025 | Netherlands | May 1959 | C/O Mercer & Hole, The Pinnacle, 170 Midsummer Boulevard, Milton Keynes, MK9 1BP, England |
| DECLERCQ, Bernard RESIGNED | Director | | 23 Jan 2007 | | April 1939 | Labaratoire Intereqional De Larepros, 23 Avenue De La Republique, 91305 Massy, Frankrijr, France |
| DOBRAT, Walter RESIGNED | Director | | 27 Jun 2002 | | November 1936 | Biologiscme Bundesanstalt Fur Land-M, Braunschwigg D-3300, Germany |
| FERNANDES, Silva RESIGNED | Director | | 26 May 1995 | | April 1934 | Centro Nacional De Proteccand Da Pro, Quintas De Marques, 2780 Qeiras, Portugal |
| FOLTYN, Jindrich RESIGNED | Director | 18 Jun 2015 | 01 Sep 2015 | Czech Republic | December 1954 | 1a, Zemedelska, Cz 61300 Brno, Czech Republic |
| FOLTYN, Jindrich RESIGNED | Director | 14 Jun 2012 | 01 Sep 2015 | Czech Republic | December 1954 | 1a, Zemedelska, Brno, Czech Republic, Czech Republic |
| GALOUX, Michel, Dr RESIGNED | Director | 25 May 1996 | 23 Jan 2007 | | February 1952 | Station De Phytopharmacie De, L'Etat Rue Du Bordia 11, B - 5030 Gemloux, Belgium, FOREIGN, Belgium |
| GARVEY, Jim, Dr RESIGNED | Director | 11 Jun 2009 | 22 Jun 2023 | Ireland | July 1960 | 42, Forest Park, Leixlip, Co Kildare, W23 V8N2, Ireland |
| GILLESPIE, Margaret Josephine, Dr RESIGNED | Director | 03 Jun 2000 | 27 Jun 2002 | | June 1961 | 4 Fountayne Street, York, North Yorkshire, YO31 8HL |
| GREGORCIC, Ana RESIGNED | Director | 23 Jun 2003 | 28 Feb 2012 | Slovenia | September 1961 | Kmetijski Institut Slovenije, Hacquetova U1.2, Slo-61000, Ljubljana, Slovenia |
| HAMILTON, Dennis John RESIGNED | Director | | 23 Jun 2001 | | February 1942 | 326 Stanley Terrace, Taringa, Brisbane, Queensland 4068, FOREIGN, Australia |
| HANEL, Ralf RESIGNED | Director | 16 Jun 2006 | 19 Jun 2025 | Germany | April 1964 | C/O Mercer & Hole, The Pinnacle, 170 Midsummer Boulevard, Milton Keynes, MK9 1BP, England |
| HARRINGTON, Martin John RESIGNED | Director | | 23 Jun 2001 | | March 1932 | 5 Pondwick Road, Harpenden, Hertfordshire, AL5 2HG |
| HILL, Alan Robert Charles RESIGNED | Director | 26 May 1995 | 14 Jun 2003 | | November 1942 | Central Science Laboratory, Sand Hutton, York, YO4 1LZ |
| HOURDAKI, Adamantia, Dr RESIGNED | Director | 23 Jun 2001 | 11 Jun 2009 | | May 1948 | Benaki Phytd Pathological Institute, 8 S Delta Street, Kifissia Athens 14561, Greece |
| JACOBSEN, Eva RESIGNED | Director | 15 Jun 2021 | 16 Jun 2022 | Denmark | January 1961 | Silbury Court, 420 Silbury Boulevard, Milton Keynes, MK9 2AF, England |
| KARASALI, Helen RESIGNED | Director | 20 Jun 2018 | 22 Jun 2023 | Greece | October 1965 | 2, Aleas Street, Peristeri, Athens, 12135, Greece |
| KOUPPARI, Anna RESIGNED | Director | 27 Jun 2002 | 16 Jun 2006 | | September 1960 | Analytical Laboratories, Dept Of Agriculture, Nicosia 1412, FOREIGN, Cyprus |
| KRONGAARD, Teddy RESIGNED | Director | 16 Jun 2006 | 05 Aug 2011 | Denmark | September 1966 | Industrives 6, 4130 Viby, Denmark |
| LUETRAKOOL, Nunchana RESIGNED | Director | 10 Jun 2010 | 23 Jun 2014 | Thailand | May 1954 | 61/58, Senanivet 2, Jorakebua, Lardprao, Bangkok, 10230, Thailand |
| MANSO, Luis RESIGNED | Director | 13 Jun 2013 | 20 Jun 2018 | Spain | June 1950 | Casiopea, Casiopea, 1 Aravaca, Madrid, Spain |
| MULLER, Markus Daniel, Dr RESIGNED | Director | 01 Jul 2007 | 13 Jun 2013 | Switzerland | October 1947 | Swiss Federal Research Station, Wadenswil, Ch-8820, Switzerland |
| MULLER, Markus Daniel, Dr RESIGNED | Director | 27 Jun 2003 | 16 Jun 2006 | Switzerland | October 1947 | Swiss Federal Research Station, Wadenswil, Ch-8820, Switzerland |
| NOVAKOVA, Olga RESIGNED | Director | 15 Jun 2021 | 22 Jun 2023 | Czech Republic | August 1960 | ., Jirocova 9, Brno, 62300, Czech Republic |
| SANCHEZ-RASERO, Francisco RESIGNED | Director | | 03 Jun 2000 | | March 1937 | Estacion Experimental Dfl Zadincsic, Laportado 419, Granada, Spain |
| SANDMANN, Eduard Rudolf Ignatius Clemens RESIGNED | Director | 16 Jun 2006 | 10 Jun 2010 | | April 1948 | 245 Hay Street, Brooklyn, Pretoria 0181, FOREIGN, South Africa |
| TESSIER, Sonia Elizabeth Webb RESIGNED | Director | 11 Jun 2009 | 07 Jul 2014 | United Kingdom | July 1971 | 49a, Rose Street, York, North Yorkshire, YO31 8JE |
| THONGORD, Jirapan RESIGNED | Director | 23 Jun 2023 | 20 Jun 2024 | Thailand | February 1964 | C/O Mercer & Hole, The Pinnacle, 170 Midsummer Boulevard, Milton Keynes, MK9 1BP, England |
| VENANT, Annick, Dr RESIGNED | Director | 23 Jun 2014 | 18 Jun 2015 | France | September 1949 | 17 Claygate Avenue, Harpenden, Hertfordshire, AL5 2HE |