France has various decrets and arrettes regulating diving, to the extend that a PADI certificate is useless.
In France there are strict laws. In practice only divers with CMAS-compliant certifications are free to dive alone, without supervision.
Recreational air diving French regulations applies to dives organized by an entity (commercial or non-profit). They don't apply if you go diving with a group of friends. There is much noise about the possibility for an informal group of friend to be classified as a de facto entity, as far as I know there are only a few cases prosecuted on that basis and none had this argument considered as valid.
The regulation is formulated in terms of competencies (to which depth can you dive with only peers as buddy, to which depth can you dive with a qualified guide, solo diving is not authorized for anybody when the regulation applies). There is a mapping in the regulation from CMAS certification to those competencies and there are non CMAS affiliated French agencies which deliver certifications in term of those competencies. A diver organizer can do their own mapping for other agencies (although only CMAS or french certification may allow you to dive on air between 40 and 60m). There is something arbitrary there and you'll have more difficulty to get recognition of your certification with a non-profit club in a non touristy area than with a commercial charter in on the Mediterranean coast (all of those I know will sell you a PADI or SSI formation as easily as a French one or a pack with both certifications if you ask and pay for it, obviously they will let you dive with it afterwards) but I've been buddied with people having only PADI or SSI certifications delivered outside of France before I got the certification allowing me to be a guide for those who need it.
Being a guide without being an instructor is reserved to french certifications.
To act as a non profit instructor, you need to have a CMAS or a french instructor certification.
To act as a for profit instructor, you need to have a state delivered certification (I wonder how well that match with EU rules, so maybe you don't really if you are not French and a citizen of an EU country and you qualify to do for profit training in your own country, consult a lawyer specialized in those matter if you really care).
Including Europe.
I'm pretty sure the Netherlands have self-operated air filling stations at popular places for beach diving such as Zealand.