I'll see if I can go and give this a walk tomorrow and provide a GPS trace (yes I live local enough to not contravene any current laws). Looking at the online definite map from LCC it does show pretty much what is on OSM, only that from the bridge over the drain it immeditnaly goes to the north corner of the woodland instead of following the woodland edge. If the signs don't match up with what the map shows (or council provides) I'll contact the council about the actual legal route of the PRoW