The area will stay unnamed. It is not defined directly in law. Only parished areas are defined explicitly, and unparished areas are areas which do not fall within a civil parish. This boundary represents a "hole" in the administrative hierarchy, and the only reason a polygon exists in OS Boundary-Line is to ensure the topology of the whole country has complete coverage.
In the past there may have been some kind of council or other "thing" with a name that "owned" this polygon in some sense, but that is not currently the case.
I'm sure nobody needs reminding that any similarity of naming between government and Royal Mail is "purely coincidental."

Hi! Can you explain how removing nodes from an admin boundary is an improvement? The source is reasonably authoritative, so these nodes are not there for nothing. I am referring specifically to osm.org/way/1053157085

Do you mean points with identical coordinates? Or just close together? The effect of the DP is clearly visible... What tolerance did you use? In any case it would be bad practice to sacrifice accuracy in the database, unless a certain limit has been agreed beforehand.

Hi Baz,
your change to the parish boundary seems to be at odds with official records... How did you determine the new run of the boundary?

Hi,
Why did you simplify the coastline? The input data from Ordnance Survey is already generalised. Why remove detail? Where do you draw the line in terms of accuracy/resolution?

I am curious... Why did you remove the wikidata tag from the Glascwm relation?

Hi Billy... I am not convinced Sealand should have any kind of admin boundary as it is not recognised by anyone except its own inhabitant(s). But it should most definitely not be at admin_level=1!!! Normal sovereign countries are at admin_level=2, and level 1 is kind of "reserved" for supranational administrations if they ever become hierarchically superior to sovereign states.

Hi Mateusz... This change is not right. The previous wikidata link, Q23939248, reference the correct area (including the City of London), but this one is wrong as it excludes the City of London. There are about a million interpretations of "London" and it's a confusing mess, sorry about that...

Hi! The issue is solely around the admin centre of the civil parish administrative boundary. The "rule" is that the admin centre is set to the place node (representing the place where the main council offices are located). So it's not about the geometric centre, or a good place for a label, or the exact building. In this case is should be the place node for the place of Kings Hill. The admin centre in the boundary relation was correct (and now is correct again), but you moved it to some other node.... Why did you choose that node specifically?
More info on osm.wiki/Relation:boundary#Relation_tags

NB: your change to the admin_centre of Kings Hill parish has been reverted - please check the wiki for how this role is used

Please don't fiddle with UK admin boundaries. If you change something, please state your source in the changeset comments.

My bad, I think I copied one too many relations over to the new boundary way. Thanks for fixing!

Please note the correct admin level for Greater Manchester is 5 as it is now a Combined Authority and no longer an administrative county.

Why are you moving the admin boundary between Llannor and Pwllheli? Do you know something the Ordnance Survey don't?

Thank you!

Thank you!

You tagged a Welsh Community boundary with a wikidata link to a parish (which is only an ecclesiastical concept in Wales these days). IMHO this is not correct, but I would love to hear why you think it is.

I am not sure it is right to link a Welsh Community area in OSM to an ecclesiastical parish in Wikidata. Although many years ago they may have had a common origin they are no longer locked together by definition.

Great! I recommend you familiarize yourself with the tagging of admin areas in the UK, as documented in the wiki (osm.wiki/Tag:boundary%3Dadministrative#10_admin_level_values_for_specific_countries) and as used in practice. Be warned, the UK has quite a complex admin hierarchy. Don't hesitate to ask if you have any questions!

What makes you think this boundary object represents an LEZ?