The service road you created -
way/361910241 seems to go through a building. Is this really true?

Perhaps some comments about the changes you made could help.
See osm.wiki/Good_changeset_comments

This edit seems to contain random deletions. I was at Pencilli camp site recently at the end of May. Those camp site service roads are still there!
Please use changeset comments to explain your edits:
osm.wiki/Good_changeset_comments

osm.wiki/One_feature,_one_OSM_element

I'm intrigued by Meteor Way becoming one way.
How does one ever leave?

Comments on edits can be useful to confirm reasoning of the change. See:

osm.wiki/Good_changeset_comments

NB You shouldn't be using Google StreetView for deriving OSM positional data.
See:
https://help.openstreetmap.org/questions/710/can-i-use-google-streetview-to-help-create-maps

There is already an object (a closed way) describing this Waitrose.

Comment should have been:
"Pond and a milestone seen beside the A4136"

Hmm, seems JOSM didn't upload my comment correctly (it reused the previous one!). This should be:
"Walk around Cross / Crook Peak. Standard designation tags, many gates and barriers. Pub, postbox, speed limit and other misc stuff."

I don't think this postbox is in the middle of road!
Which side should it be?

Probably would have been easier to tag it route-->disused:route instead.

Thus restoring it (if/when it returns) is simple.

If it no longer usable as a telephone, then it's better tagged as 'disused:amenity'.

See disused=*: for object life-cycle concepts.

Taunton Leisure are 'outdoors' store like Millets maybe. Camping and whatnot.
Maybe shop=outdoor

I doubt these are public car parks, probably only for employees of Raymarine.
Thus these should have access=private tags.

Note that cuisine tag values should match exactly something from: cuisine=*
Thus
Italian => italian
+
Turkish_&_Meze => turkish

This was my first commit to OSM.
Hopefully I've learnt to enter better comments.