SK53
Have you actually looked at the OSM ways compared with available aerial imagery, or OS StreetView?  The data here are clearly wrong when viewing them this way. Using Gmaps as a source is inadmissible evidence so I haven't looked at it. Much of the data is from ages ago so was probably based on estimates & dodgy GPS traces through the trees.The two roads going off here traverse numerous gardens. Quite clearly there is one road leaving Stoke Row Road, another going off to the L after a short while and another further along. Here's the area on OS StreetView (you can toggle to OSM too): https://os.openstreetmap.org/#zoom=17&lat=51.533315&lon=-0.99683