A recent edit has broken both bus route and roundabout connectivity here on 3 of the 4 exits.

The section of rail line from here to the tunnel is marked as "cutting=yes". I suspect that that's a merge faux-pas - the section dropping into the tunnel at the north is in a cutting, but as I remember it the section here is above the road and isn't. It should be possible to estimate where the cutting starts from the tracks here (it'll need an on-the ground survey - the imagery is too "flat" to tell).

I'm guessing that neither "Cut-through" not "Footpath Seaford 13a" are really named that? If something really doesn't have a name, it doesn't need to have one in OSM.

Lots of duplicate nodes on the landuse borders here (open the area in an editor that displays this sensibly and you'll see it). There are some paths in the area that need surveying, so another option might be to wait until they are done.

There's a discrepancy between the changeset comment and the tagging on way/147941535/history ("This track is a public bridleway"). It IS tagged as a public bridleway but was changed from a highway=track to a highway=bridleway recently.

Whatever node/1867610255 is, it's certainly not a "huntind stand". No-one's shouting "pull" at some chap throwing trout in the air. Needs a survey to see what's really here (my recollection is nothing memorable) and tagging accordingly.

I think there's some new-build housing about to be built here. How far back will it go?