There is an island about here

via StreetComplete 44.1

amenity=business centre ?

I was here today following Ipstones FP 6. The path takes you through Booth Hall Farmyard. When I got to the note location a farmer asked "are you lost" and directed me to take a different path (Ipstones FP 7). I didn't argue but I checked on the map here and it looks like this IS a valid footpath and the farmer was illegally obstructing me. Can anyone local here confirm if this path is legitimate?

Is there really a post office here?