Yes, I dive normally in Europe, mostly Germany. Here some rules of a mine in Germany:Grube Christine: Zugelassen sind GUE Cave I Zertifizierungen und Full Cave Zertifizierungen der Verbände GUE, NACD, NSS/CDS, IANTD, PATD, TDI. Grube Brilon: Zugelassen sind Full Cave / Cave II Brevets der Verbände NACD, NSS/CDS, IANTD, GUE.
So as you can read, in Brilon they don't accept TDI (or it must be a mistake, I can ask for it). I'm a beginner (as you know, you learn the basics in such a course, an now you need to dive, dive and dive, so I won't dive here without an experienced diver or a guide, but diving here is not very far away.). Christine is more easy and better to start with. But I wonder if there are more caves where you aren't allowed to dive with a TDI full cave certificate.