I see what you mean. Not particularly clear cut!

Of the two proposed solutions, the more concise one conserving conversation status would be my preference. However, I'm happy with either. I'm also happy for you to make the changes since you're more experienced with this type of change.

Hello, thanks for this!

The change extended the Iffley Medaow's southern boundary, which was previously running along the southern bypass, further south. This was sourced from https://www.oxford.gov.uk/directory_record/892/iffley_meadow_nature_reserve (click Site Boundaries Map).

Another changeset edited Longbridges Nature Park (see osm.org/changeset/94552690#map=16/51.7325/-1.2449). This was also sourced from Oxford City Council's website. I'm pleased you've commented on the change because I've digged around a bit more and found https://www.gov.uk/guidance/protected-areas-sites-of-special-scientific-interest#check-if-your-land-is-within-a-sssi This shows that the SSSI should not include the change I made, so I agree with your comment -- thank you. It also suggests that: 1) the SSSI should be smaller by excluding the managed forest in the northern part, and 2) there's a strip that should be extended below the southern bypass.

I'm now wondering what sources should we use for these changesets to parks/reserves. Is there a source that confirms the legal boundaries? What do you think?