Why?

Hi, please could you explain the reason you have added layer=-1 to this tunnel?
What information do you have suggesting that it is below ground level?
Cheers Phil

Hi, are you sure that this is a publicly accessible residential road. Imagery (kerbs crossed and colour) suggests that this is a private shared driveway. The name Drover's Close is another indicator that should be taken into account.
Cheers Phil

I have reverted this changeset

Thank you Peter

Maps.me is a bit limited in what it offers, however in OSM if a category hasn't been mapped before you can choose your own tags in editors such as iD.
Maybe use tourism=gallery, or invent a new tag such as amenity=cultural_centre. Possibly map it as an area, and then include things like the restaurant and galleries as nodes within the area.
I assume it occupies the space where GAP was? If so that needs to be removed.
Cheers Phil

Hi welcome to OSM. The website seems to imply that this is some sort of shop however you have mapped it as a museum.
Please could you explain what it is?
Cheers Phil

Hi Peter
The consensus among mappers is that references that are not verifiable on the ground should be put into other tags.
In the case of rights of way we use the prow_ref tag, please could you use this instead.
More specialised renderers do display them, see https://map.atownsend.org.uk/maps/map/map.html
If you want to see an example see way/355132221
Cheers Phil

Hi
I am assuming you are trying to tag the Trains to signs?
This is not a name and the name tag should only be used to tag actual names, not as a place to add random information.
Maybe as use a different tag such as direction=Liverpool?
Cheers Phil

Hi, this edit has broken the tagging of this object. The Llangollen railway is preserved and it is incorrect to tag it as a normal railway just to make it appear differently on one particular renderer.
This is what is called 'tagging for the render' which is an absolute no no in OSM.
Please remember that OSM is a geographical database, which can be rendered in many ways.
Cheers Phil

Hi, I have been here and there are definitely no signs. If I have missied something then please point me to some photographic evidence.
In OSM we map what is visible and verifiable on the ground and I am convinced that this does not pass that test.
Cheers Phil

Hi Jon, thank you for removing that.
To answer your questions firstly the forum gets very little attention in the UK, we are far more active on the talk-gb mailing list https://lists.openstreetmap.org/listinfo/talk-gb.
OSM is a geographical database that can be rendered in many ways. The cycling layer is just a specialized render of OSM data, emphasising those features of interest to cyclists.
OSM data is mostly created by the public, we import very little in the UK and that is mostly boundaries.
The GPS tracks may have comments stating what they are, we essentially upload gpx files. Most of mine are from my gps, occasionally they maybe from OSMand, but that will be car and road stuff.
Routes in OSM are done as relations, a collection of ways, but these should be verifiable i.e. signed on the ground.
For creating my own routes I use graphhopper.com, which allows via points and different modes.
HTH Phil

Please do not abuse the name tag, this is Wales and the local language should take priority. If you want to make a map of English names then you can using the name:en,

Please do not abuse the name tag, this is Wales and the local language should take priority. If you want to make a map of English names then you can using the name:en,

Hi, not sure if you have been here, and I am assuming that this is an armchair edit, but this is very clearly not a peak as it is on the side of a hill.
Please only map things that actually exist.

Hi, not sure if you have been here, and I am assuming that this is an armchair edit.
Imagery confirms that this a flat area in a campsite, if there was a peak here once it has long been flattened meaning it has no place in OSM.

Please only map things that actually exist.

Hi, not sure if you have been here, and I am assuming that this is an armchair edit, but from my experience this is a pretty flat area. Trains do not climb peaks very well and this is certainly not a peak.
Please only map things that actually exist.

Hi, not sure if you have been here, and I am assuming that this is an armchair edit, but from my visits this is a pretty flat area. It is certainly not a peak.
Please only map things that actually exist.

Hi, this edit has gone a bit wrong.

You seem to have created a duplication of existing ways. Please do not do this. There are route planning apps available in OSM and that use is, for example grapphopper.com.
Cheers Phil

No evidence of a peak