FOUNDER: JOHN HUNTER  (UNITED KINGDOM)
1983-1985: JOHN HUNTER  (UNITED KINGDOM)
1985-1988: KURT-ALPHONS JOCHHEIM + (GERMANY)
1988-1992: BD BANGMA + (GERMANY)
1992-1995: SIMON MILLER + (UNITED KINGDOM)
1995-1998: JUHANI WIKSTRÖM (FINLAND)
1998-2001: MICHAEL SCHUNTERMANN (GERMANY)
2001-2004: ALBERTO HIDALGO DE CAVIEDES (SPAIN)
2004-2007: CRT MARINCEK (SLOVENIA)
2007-2008: HAIM RING + (ISRAEL)
2008-2009: GABOR FAZEKAS (HUNGARY) 
2009-2011: AIVARS VETRA (LATVIA)
2011-2013: GABOR FAZEKAS (HUNGARY)
2013-2015: GÜLSEREN AKYUZ (TURKEY)
2015-2017: AARNE YLINEN (FINLAND)
2017-2019: FREDERIKE VAN WIJCK (UNITED KINGDOM)
2019 – 2021 SUSANNE WEINBRENNER (GERMANY)
2021 - 2023 HELENA BURGER (SLOVENIA) 
2023 - CURRENT: EVRIM KARADAĞ SAYGI (TURKEY)