| Years | Chairmen | Secretariat |
| 1972 | Mr Arthur G. Fishburn, UK | Mr A. Gaeta Mr R. Martin |
| 1973 | Mr Arthur G. Fishburn, UK | Mr A. Gaeta Mr D. Thompson Mr C. Querner |
| 1974-75 | Prof. Åke Liljestrand, Sweden | Mr A. Gaeta Mr G. Besson |
| 1976-77 | Dr J.P. Bertschinger, Switzerland | Mr A. Gaeta Mr G. Besson |
| 1978-79 | Mr Björn Jöldal, Norway | Mr A. Gaeta Mr G. Besson |
| 1980 | Dr Roger Baker, UK | Mr A. Gaeta Mr G. Besson |
| 1981 | Dr Roger Baker, UK | Mr G. Besson |
| 1982-83 | Prof. Istvan Bayer, Hungary | Mr G. Besson |
| 1984-85 | Mr Frank O'Dowd, Ireland | Mr G. Besson |
| 1986-87 | Dr Theo Witschi, Switzerland | Mr G. Besson |
| 1988-89 | Mr L-G Kinnander, Sweden | Mr G. Besson |
| 1990-91 | Dr Karl Feiden, Germany | Mr G. Besson |
| 1992-93 | Mr Bryan Hartley, UK | Mr G. Besson |
| 1994-95 | Ms Karin Bredal Jensen, Denmark | Mr G. Besson |
| 1996-97 | Mr Harri Ikäläinen, Finland | Mr G. Besson |
| 1998-99 | Dr Bernard Scherz, Switzerland | Mr G. Besson |
| 2000-01 | Mr Robert Tribe, Australia | Mr D. Brunner |
| 2002-03 | Ms Lilian Hamilton, Sweden | Mr D. Brunner |
| 2004-05 | Mr Hans Smallenbroek, Netherlands | Mr D. Brunner Mr A. Kovacs |
| 2006-08 | Mr Jacques Morénas, France | Mr D. Brunner Mr A. Kovacs |




