Hello. Thank you for your comment. Are you referring to the houses on Park Road?

Hello thank you for your comment. I believe most (or all?) of the NSG data became open data in 2020, if i recall correctly with the exception of the Ordnance Survey. The OSM Wiki seems to say that it is an acceptable source to use.

Hello thank you for your comment. If this road is labelled as Pendalar in the USRN map then the road should be renamed.

Hello Thank you for your comment. I simply used the English translation of Afon Dale according to the NSG. :)

Yes, this must be a mistake - thank you for letting me know :)

Hello Thank you for your comment. The source is the street USRN from the NSG :)