France could be difficult.
A few years ago a friend got caught out with deteriorating weather near Cherbourg and with night approaching decided to make a precautionary landing in a suitable, if small, field.
Within minutes the local police arrived and whilst very helpful would not merely let him take off the following morning. The airfield manager from Cherbourg was called out together with the local mayor and had to declare the field a temporary airfield for it to be used to take off. Even then they insisted that a local QFI did the flight of a few miles to Cherbourg airport.
Whist only a few sentences to describe, the whole process took three days. If that is typical of an off airfield landing in France then better not to do it!