Aargh... I made the poor assumption that the incorrect key held the incorrect value, but it appears "326/4" is the correct value & "Radley FP 4" is the made up one. Will revert & redo.

OSM should /not/ be making up their own. RW, or you, wouldn't dream of altering the refs for motorways or A roads, so it's beyond comprehension why you perceive it to be acceptable for PROWs.

Hi
Welcome to OSM.
node/5866078584/history
There is already a railway=station tag.
railway=stop is the valid tag.

Hi
I really think there should only be one prow_ref tag. Duplicating only causes more confusion.
Looking at Cornwall's database it's clear the values you added to the 'official' tag are the correct ones & should be transferred to 'prow_ref'

Please don't change the well used & documented prow_ref tag to prow_ref:official

or destination even?

hgv designated?
https://osmlab.github.io/osm-deep-history/#/way/4235262

https://maps.app.goo.gl/hk2ve3CWJmcVXDUY6

Hi
way/1279782238
You can't have tunnels & bridges.

layer is a rendering tag. the bridge has +1 value so the path doesn't require a layer tag.

Could you provide details of the railway building being under construction? I can find no record of it.

There is already a railway station tag here. Please don't add duplicates.

node/7209359518

way/353038306/history

If you're "Not familiar" with specific problems highlighted by notes then it's best they're left alone.

Hi
node/6135938648/history
Why have you revalued the network tags of some railway stations from Overground to National Rail.

https://en.wikipedia.org/wiki/London_Overground#Stations

https://en.wikipedia.org/wiki/Category:Railway_stations_served_by_London_Overground

Hi
To check, are you sure about the bin?
The one on the bridge & one next to the path are already tagged
osm.org/edit?editor=id#map=19/51.37576/-2.38272

Hi
node/3648408660
There is already a railway station.

As it was previously...
https://en.wikipedia.org/wiki/Chalk_Farm_tube_station

...And the fare_zone tag?

Hi
https://osmlab.github.io/osm-deep-history/#/node/3637436408

What is the reason for you removing the subway tag?

Hi
https://osmlab.github.io/osm-deep-history/#/node/34037750
What is the reason for amending the operator & removing the network tags?

Hi
https://osmlab.github.io/osm-deep-history/#/node/5585857405
What is the reason you amended the network to London Overground?

Hi
node/3663368461
What is the reason you've amended the network of this London underground station to National Rail?