Thats why the CAA (and any sensible Authority) stipulate training at licenced airfields. It isn't designed to generate them funds (for a change) it's for your safety.
How so?
If I practice EOL's....even if it is power recovery....does it matter where I do that? I am sure engines fail during cruise while between airfields.
If we use the conventional wisdom here...then practice force landings outside the traffic pattern would be unsafe, unapproved, and not a done thing.
How do you practice confined area operations without finding a hole in the woods somewhere? Any pinnacles found on airfields?
Or....do we just do a verbal brief and simulate confined areas and pinnacles?
Any airfields on ridgelines?
Any mountain airfields handy for learning to fly in the mountains?