Are you sure about node/4020491191. Just checking my photos from Feb 2016 & I think this is a stile adjacent to a gate.

Not to worry: somewhat surprisingly trig pillars are not that well documented. This discussion is useful for helping clarify what should be documented. By a remarkable co-incidence last weekend I also mapped a trig pillar featured on sheet 122 (node/4608321916), so it's helping me too.

My copy of the map has your point with a spot point of 492 ft which is just shy of 150 m. I'd run with either 149 or 150.

Normally for lowland Britain I just transform old OS heights to metres before adding to OSM. You can also add ele:ft=492 but this ain't really necessary.

I've just looked at one example and I would tend to agree with GinaroZ. Shops with an address of the form 10-16 isnt a true interpolated address, because numbers 10,12,14 and 16 dont exist independently. We (Nottingham mappers) stick to using addr:interpolation on single address nodes for things like blocks of flats and would always expect all numbers in the range to be present on the ground.
It would have made sense to discuss this up front.

This is tidal mud, I've gazed at it many times from the London Apprentice.

type=* anything should be avoided as type really should be reserved for relations. I would agree with either of survey_point or survey_point:type as being suitable values.

@PolarBear I think in this case it is your responsibility to reverse the edit. Normally in the UK we use notes for cases where only the type of evidence you had is available of a change. This is particularly true when the data pertains to the operator not the actual amenity (and this is true of much open data such as Food Hygiene rating where the primary key changes with a new operator).

If you want it to appear on the transport map I think you need to put the bus route number in the ref tag, so add ref=6 and then it should appear along the relevant roads. Here's an example from my own area: relation/71283

And I thought you'd just tell me to change my browser locale settings.

Having Dunleary coming up in Nominatim searches instead of Dun Laoghaire seems very anachronistic. But then Kingstown would be a hell of a lot worse!

There is indeed no meadow here: maybe a patch of grass in the hall courtyards, in which case landuse=grass, grass=amenity_grassland. However, I have generally avoided mapping grassy areas in the campus as it makes things rather complicated: and as it's a campus grass can be considered a reasonable default.

Don't be too wedded to wiki definitions. Often the locality name covers a broader area than just the buildings which have the same name. Sometimes the locality came first, sometimes the buildings. Unless one has detailed research/local knowledge it's not easy to decide & EPNS researchers spend years on such problems. Notwithstanding the wiki and mapping by abc* (often incorrect) use of place=isolated_dwelling is scarcely used in the UK. I would suggest further discussion for a wider audience on talk-gb.

Slightly complicated one: Raw Head & the hut across the road aren't really residential areas, but can't think what else can be used to mark them. From a purely financial view they're commercial as the climbing clubs have to pay business rates, but that ain't right either. Perhaps some kind of sub-tag of residential along the lines of tourism.

Strongly agree with @SomeoneElse. The place=isolated_dwelling tag is almost always a mistake in Britain. For large distinctive isolated buildings (country houses for instance) adding name to the building is fine, for smaller residences this information belongs in addr:housename. Where an isolated dwelling is an actual topographic name use place=locality. Many 'isolated dwellings' these days are 2-3: say original farm house, the farm bungalow (warmer than former) and old workers cottages may all look to be one site, but the old house is a second home, the bungalow is where the famer lives, and the cottages are holiday lets. They're often hard to disentangle even by survey, so at a minimum a source tag is needed.

Thanks it needed a source:name

Yes, looks to have gone according to OSSV http://os.openstreetmap.org/#zoom=16&lat=53.15099&lon=-0.9938. Cant find my pic of the postbox, but I dont remember anything looking like a former PO.

I suspect the post office mapped in Eakring (node/426994556) is an error for the post box in almost the same location. I certainly dont recall seeing a post office here in June 2015.

Thanks, new addresses & postcodes are always very valuable. You might also like to add office=computer_services and maybe draw the building and then you will be more visible. I think we had no aerial imagery when I first mapped the area.

Very late I know, but: a) what is the source of this data; b) is it documented on the Import list on the wiki; c) was this import discussed on the import mailing list. Quality seems very low.

Please don't delete ways without checking if they are part of a relation. You broke the boundary of two Irish Vice Counties by deleting way/355190936. These are actively used by Irish botanists & other naturalists.

This map data is used by millions of people. Please dont mess around with it for 'fun'