deleted way end node - vandalism/test edit reverted

moved bus and cycleway nodes, added a false 'bridge' way - vandalism/test edit reverted

falsely extended way into a triangle - vandalism/test edit reverted

moved Heron Foods shop node and highway nodes out of position - vandalism/test edit reverted

deleted all tags from building - vandalism/test edit reverted

moved 2 nodes of building across main road and railway, separated/moved node of 2 buildings - vandalism/test edit reverted

moved Superdrug shop node far out of position - vandalism/test edit reverted

shortened side road - vandalism/test edit reverted

dragged service way node onto unrelated parking edge - vandalism/test edit reverted

dragged nodes of pair of buildings onto huge false shape - vandalism/test edit reverted

dragged ~6 nodes of buildings and ways large distances - vandalism/test edit reverted

This part is clearly a shared ownership service way, see OS OpenMap Local and Cadastral layers in JOSM. It may have been allocated a USRN, but it is an OSM service way.

I've carefully reviewed the changeset changes at https://overpass-api.de/achavi/?changeset=130213404
and can find no occurrence of the removal of USRN data from any residential road. A section of road has been made service where Cadastral data indicates it should be, and the USRN was removed in line with every other road in the area. Turning T ends have been made residential where they should be. You will need to decide if these ends should have USRN data or not; they are far from consistent in this area. Data in OSM should be verifiable.
The difference between residential, (unqualified) service and driveway is not as arbitrary as you suggest. The combination of Cadastral, OS OpenMap Local and imagery generally defines what is a 'public' road (residential or unclassified where appropriate), what is shared ownership access way (service) and what is the access to a single property or business for service=driveway. Please do not divide ways (eg left v right end of symmetrical turning T or make ways service due to the apparent absence of USRN in your dataset.
I stand by my edit.

Hi. Didn't intend to delete anything, but I don't have visibility of the OS Open USRN data you refer to. Generally (but not always, eg for patches of council housing) the Cadastral parcels data available in JOSM is clear which ways are part of the 'public' highway eg residential and which are shared ownership access service ways. The OS OpenMap Local also distinguishes, and these sources usually match. If the USRN applies to the 'whole' road, I presume the whole of a turning 'T' would be included. I noted a comment on the USRN information that it would be set against a 'OS Mastermap' (whatever that is) and wouldn't necessarily exactly align with OSM ways. Do you have a way of showing the USRN data as a JOSM layer/overlay?

St is the full form of the honorific before a saint's name in UK english. All usage of 'Saint'+name is OSM is wrong unless there is local signage or other official documentation that uses that form. A description of the way may be "the road of the saint called Leonard" but the full form of the name of the saint is St Leonard (St or St. interchangably, recent Engish usage favours no use of point) and the road is therefore St Leonards Road (with or without apostrophy as local signage/usage dictates). Review any number of 1000s of websites etc for churches, CofE/Catholic schools etc in UK eg start by reviewing the contents of www.stpauls.co.uk and tell them all if they are always writing their own names wrongly.

That wiki page is fine for me. Check 3rd paragraph including link referring to British placenames beginning with "St"

St for Saint is an established name prefix like Mr, Mrs etc and is shown on road signs like this, and normally represented the same in OSM. Abbreviations for road, street etc are not accepted and this is not relevant here.

I don't understand. The area was covered with grass until the new building and access roads were added and now is not. Feel free to improve the map.

It is completely unnecessary to add oneway=no to roads like the A534, and in almost every other case. The iD editor is wrong to suggest otherwise.

However it is completely terrible to add oneway=yes to a short length of that road, this wrecked routing for me today.

Oneway tags removed.

What does this area represent? The display was well represented as its front shape. Do not think that you must do something, anything, if iD bleats about what it considers to be a problem.
Also the changeset comment 'updated' is completely unacceptable, every time you've used it. You've been asked about this before. A suitable changeset comment would describe what you've changed and why. eg "changed advertising display from linear way to area because iD asked me to"