Whilst looking for the current restrictions at Vingrau (none) I came across this article regarding a recent tribunal decision against the FFME (equivalent of BMC)
http://www.ffme.fr/escalade/article/la-gestion-des-sites-de-pratiques-par-l...
Because the FFME has agreements with all landowners where climbing is practiced, under French civil code, they become liable for damage "caused" by the cliff.
In this case it seems as if a (one) rock fell and hit a climber causing damage which the FFME then had to pay for.
The FFME are obviously trying to get the law amended as, although their insurers have covered this claim, future premiums will no doubt go through the roof and membership fees will rise substantially.
I had never heard of this law and wondered if a similar thing applies to the UK.
I had always believed that if you used an outdoor climbing site, you took responsibility for your actions and that potential rock fall was just one of those risks that you had to accept.
You can understand why private land owners ban climbing on their sites.