The results of searching for "VKU courses in English": 12 English-speaking places
There are also organizations that speak other languages: Russian.
Landstrasse 18 5430 Switzerland
Badenerstrasse 333 8003 Zürich Switzerland
Oberdorfstrasse 32 8001 Switzerland
Freiestrasse 175 8032 Switzerland
Seefeldstrasse 45 8008 Switzerland
Rütlistrasse 21 8307 Switzerland
Zeughausstrasse 31 8004 Zürich Switzerland
Obermühle 8 6340 Zug Switzerland
Blattenmoosstrasse 7 6014 Switzerland
Bahnhofstrasse 71 8001 Switzerland
Seefeldstrasse 115 8008 Switzerland
Maihofstrasse 95A 6006 Switzerland