Hi,
This way is already tagged so the best I can suggest is review your routing software:
destination:ref:lanes=A189 North|A189 North

https://www.openstreetmap.org/way/316409355/
https://wiki.openstreetmap.org/wiki/Key:destination
https://www.mapillary.com/app/?pKey=286613596423806

Moor Farm is a study in hostile road design - too many users ignore any lane markings, and it is going to be ripped up and replaced anyway ("just one more lane, bro!"). 

Not good, but the OSM data looks correct!
Happy Mapping,

James