I have to say I'm a bit confused by your logic. You want a locked gate that has almost certainly never been used & is highly unlikely to be used, as a service road. Yet want one that's in use 24/7 by motor vehicles as pedestrian.
I think I've fixed College Green, but the rendering is V. slow for MPs

Half my edits in one changeset didn't save to the database. I'll let it settle before editing.
Point 3. It's a vehicle entrance to the hotel & adjacent businesses. There's a clear kerb definition with double yellows. When I went past there were parked up taxis. There are loading restriction signs. ESRI has vehicles & Mapillary shows a vehicle pulling in.
Where are the pedestrian signs ocated?

Tip: In iD editor there's 'S' shortcut key to 'square off' buildings.

Hi again
These are not parks. There are not multiple parks within the local nature reserve. If you wish it to render green then add landuse=grass to the areas that are grass.

Are you sure you haven't got your defaults set to 'avoid scary toads'?

Hi
Welcome to OSM.
This sounds like a problem with 'Bosch Nyon ' (who ever they are) & not OSM. To save yourself a LOT of editing you may wish to contact their admin to see why their product is not complying.

What that photo is missing is the lack of dropped kerb, the non existence of a vision splay due to the step out of the wall & the numerous trees. There is no road definition, it's all pavement. This is not an egress.

It's name is not 'house'

Hi Quentin
Welcome ot OSM
I assume this is your house. Is 'Home' it's genuine name? Are you a B&B? if not, 'tourism' should be added

Hi
The building is a part of the railway any more
https://en.wikipedia.org/wiki/Sea_Mills_railway_station#History

Hi
Good to see you're unifying YHA tagging, but I don't think it's correct to duplicate data. such as addresses or the tourism tag.
As YHAs can have multiple buildings, such as Bath, I think they're best suited to being on the boundary polygon.

Hi
If the rest of Station Rd is oneway. doesn't this section have to be also?

Hi
What is the reason you changed this from abandoned to platform?
way/305696478

Hi
Welcome to OSM
Does Bunting Lane join Robin Place? If so, unnamed the way (way/106339607) should be deleted & Bunting Lane extended

Hi
Welcome to OSM
These are all empty nodes. Could you clarify what you're trying to add?

https://lists.openstreetmap.org/pipermail/talk-gb/2018-March/021236.html

Hi
FYI the best way to tag the playing fileds is like this:
way/470651590

leisure=pitch is for the individual pitches as defined by the white lines.

My concern is the name change. Similar to road & shop names, the one on the ground should be used. In databases they're often manipulated to suit the needs of the compiler.

A heads-up on Talk-GB would have been nice.

Hi
Was this block amendment discussed anywhere?

Hi
FYI ways forming multi polygon 'inners' don't require a tag if they're the same as in the relation. It's only needed if different ie a lake.