[Talk-GB] UPRN Locations Map

Mark Goodge mark at good-stuff.co.uk
Sat Jul 4 11:02:59 UTC 2020

On 04/07/2020 06:16, Kai Michael Poppe - OSM wrote:
> So, a few months ago I stumbled upon a note
> (https://www.openstreetmap.org/note/2158104#map=19/51.49829/-0.32762)
> that StreetComplete left saying, that the street couldn't be given a
> name because there's none shown.
> Back then, I used streetmap.co.uk
> (https://www.streetmap.co.uk/map.srf?X=516161&Y=179063&A=Y&Z=106) in
> hopes to finding something - but only got "FAI RD." which - to me -
> makes no sense.
> Also, using https://os.openstreetmap.org/ makes it look like that's just
> an access path to houses around it, which is (IMHO) not entirely true as
> the way directly linking Southdown Av. and Boston Rd. clearly is
> publicly accessible.
> Now, using the above mentioned map
> (https://osm.mathmos.net/addresses/uprn/#19/51.4983/-0.3279) I now know,
> that this street has the UPRN ID 12145988.

That may not be the UPRN of the path or street. It may be the UPRN of 
the open space that the path runs through. The path is more likely to 
have a USRN (unique street reference number) than a UPRN.

To find the USRN of the path, you need to use the lookup tables supplied 
by OS. Doing that, we find that the associated USRN is 20602512.

Now, there's no open data source which will directly tell you the name 
of a USRN (at least, not until we start putting them into OSM). The long 
way of doing so is to find the matching LineString in OS OpenMap Local, 
and see what name it has there.

However, it can be done directly via a non-open source. If you go to 
https://www.findmystreet.co.uk/map and zoom in on the location, then 
click the street to bring up the USRN details, it will give the name 
(and also confirm that the USRN from the OS lookup table is correct). Or 
use the search box and search for USRN 20602512.

 From an OSM point of view, that would normally be a dead end. Even if 
you can view the information on a non-open source, you can't incorporate 
it into OSM. However, in this case, we already have an abbreviated name 
from an open source. So all we are learning from the closed source is 
the full text of the abbreviation. Whether that makes it acceptable to 
include the full name into OSM is a matter of debate. I'll leave that 
decision up to others, but, for reference, the name of the street is 
Fairfield Road.


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