For the avoidance of doubt, we aren't allowed to copy from OS maps that show rights of way.  Some councils have made this data available under a compatible licence (the overlay at https://map.atownsend.org.uk/maps/map/map.html#18/51.77215/-2.33899/O/P is an example of a map that shows that), but there isn't a current OS map that shows PRoWs with a suitable licence.