I think "Frith End" is just the name of this general area or indeed "village" as I see has been marked on the map. https://www.openstreetmap.org/node/2743475436 I've left the same comment on the changeset you suggested but no reply yet but will give it a bit longer. I guess it is possible it is a sort of "nickname" given by those who live there for a road that does not have an actual name. Actually just thought to look on Find My Street and it gives it as "Grooms Farm Lane". Indeed https://www.truemanandgrundy.co.uk/property/grooms-farm-lane-frith-end/ even references it for ap property there. So maybe go with that? You are right it might just give me a reason to go and run it as is a nice area generally anyway. Thanks for your help!