Hi ianemitchell42, thanks for your edit. 

Could I trouble you with some further questions?

1. Would I be right to infer a typo in the name of the farm? The building is marked "Gwerbybustach Farm" (with a B), but address given as "Gwernybustach, Forest Coal Pit" (with an N). This building here: https://www.openstreetmap.org/way/998038829

2. There's a sign by a drive heading up to that building, indicating "Fforest Farmhouse". (Heading up the valley, the drivev is just before one with the vinyl banner signing Like Work But Different). Would I be right that the building currently named as the Gwe.. Farm is strictly Fforest Farmhouse? 

3. If so, would I be right to infer that the whole of the campus is Gwe.. Farm, so we can add an area (like the one whose name you removed, showing light orange on the default view). I imagine something along these lines here: https://drive.google.com/file/d/1tBKUoCV81B7-QCcajpdvhDCEu9b2Ru35/view?usp=share_link

Finally, do you know the name of the farm that was erroneously tagged as Gwerbybustach Farm before your edit?

Many thanks for your help - I'm not local (but visit the area regularly), and local knowledge is the best thing for an accurate map!