It currently looks OK in JOSM.

I assume this is due to your changeset? My changeset was quite some time ago, but I definitely recall there only being one bunnings!

All turns are one-way only.

The sat images are out of date. The roundabout was removed about 6-12 months ago, and replaced with a junction which does not allow the circular flow of traffic. You can only turn right from pingle drive to Oxford road, or left. The junction has kerbs to guide vehicles to one of these directions.

From Oxford road heading north-east, you can turn right, or continue straight ahead.

You cannot make more than a 90* turn (left or right) from any approach

OK, my error. It looks like this is actually a historic building, which has been turned into a private rental property.

https://www.airbnb.co.uk/rooms/13035070