Before you do that, I think me and @wongataa stumbled on an ambiguity on the wiki page(s) themselves - my little changes crossed into theirs: https://www.openstreetmap.org/changeset/166347580

There's some disagreement in what's right for UK tagging, and an ambiguity on the wiki page we ought to resolve. This place is pretty terrible for discussions, so it might be worth discussing it on the community forum. I'll follow up to the thread I started there, and try to gather some consensus:

https://community.openstreetmap.org/t/uk-consensus-on-junction-circular-is-there-any/130196