As I understand from chekcing how to do it, designations in Openstreetmap are supposed to be done on the basis of signs on the ground and verifying the route by

As I understand from chekcing how to do it, designations in Openstreetmap are supposed to be done on the basis of signs on the ground and verifying the route by walking it (combined with local authority reference data, which I understand is definitive). If someone has taken an interest, the paths (and other features) in an area are likely to be in a better state in OSM than an OS map from some years ago, and possibly better than the master OS data. (Obviously mileage varies -- though one hopes not far outside GPS or satellite imagery tolerances.) I guess the place to start is https://wiki.openstreetmap.org/wiki/Access_provisions_in_the_United_Kingdom#Public_Rights_of_Way https://wiki.openstreetmap.org/wiki/Access_provisions_in_the...