Surveyed this road today, the area under the note is unpaved, slightly gravelly and uphill. so i imagine a delivery van might have thought twice about going up it,  

there IS a gate where the POI is, but it's actually off the road and doesn't lead to anything (i'm assuming it's a driveway that isn't being used because there's a large bush behind it and the house it belongs to just parks their car outside on the road)  there is however a cattle grid adjacent to it so I've put that on the road instead because it isn't an obstacle.

half way up this road there is a sign that says this half of the road is a dead end and there's a 5mph sign next to it,  but, before the cattle grid, it says the name of the road like a normal street sign...   and the road is perfectly accessible for vehicles and leads to a fully paved and street-lamp lit road so I don't think it's a private road or anything..  a little strange that the road is unpaved but i'm assuming that maybe the owners of the land just made it into a through-road and were cool with that?  anyway i've updated the map the best i can considering the conflicting signeage and this note should now be resolved.