I really see no point. The data are already present in Nominatim (albeit perhaps not up-to-date) and search is the ONLY thing that so-called postcode centroids can help with. DE24 (Sinfin) was imported long ago, see this overpass query <http://overpass-turbo.eu/s/MNZ>.
What can be done is attempt to assign postcodes to streets, and various incomplete efforts have been made over the years. Open Data provides full addresses for around 70% of UK postcodes (principally Companies House, Food Hygiene & National Register of Social Housing). What would be useful is a maintained set of postcode information based on codepoint open/ONS postcode data/OS Local. The sorts of things which it would be useful to know are: - Is the postcode centroid co-located with others (e.g., delivery offices, some businesses, blocks of flats) - Can the postcode be unambiguously assigned to a street & post town? - Is the post code in use or not (ONS is now obviously 8 years old, but still potentially useful). Greg's FHRS tracker does appear to indicate a degree of churn with inner-city postcodes (although some of this will be inadvertent use of more general rather than specific postcodes by people filling in the FHRS forms) - Is a postcode the sole postcode for that street? Somewhere I have an old CPO table with some of this data populated. I think Geolytix had summary info associated with their post code sector shape files as well. Adding addr:postcode to streets which have a single postcode is in my book fine: numerous LAs put this on street signs (Rushcliffe & Gedling for sure); it's an intermediate step to adding the addresses to houses Once the postcodes which obviously belong to a single street are eliminated it's often easier to work out where the others belong. Note that other than for FHRS we have no good source for Northern Ireland postcodes at all. Equally assignment of rural postcodes is quite a bit harder than urban ones. In re-reading bits of Chris's blog last night I came across a post of his <https://chris-osm.blogspot.com/2017/03/have-you-moved.html> showing that some postcodes move huge distances between releases. Jerry PS. The Sinfin postcodes possibly should be removed as they were added IIRC before Mike Collinson's discussions with OSGB about OS Open Data. On Wed, 2 Oct 2019 at 13:44, Russ Phillips via Talk-GB < talk-gb@openstreetmap.org> wrote: > Hi, > > I'm wondering if it would be feasible and advisable to import the UK > postcode data from OS OpenData Codepoint > <https://wiki.openstreetmap.org/wiki/Ordnance_Survey_OpenData#Code-Point_Open> > . > > The licence is OSM compatible. My thinking was that we could create a node > for each data point and set the addr:postcode tag. This would be useful for > routing software like OsmAnd, since it would allow a user to enter a > postcode as a destination. > > I'm happy to do the work, but the import guidelines > <https://wiki.openstreetmap.org/wiki/Import/Guidelines> say that imports > should be discussed on the imports@ list and the appropriate local > communities, hence this email. > > Russ Phillips > > > _______________________________________________ > Talk-GB mailing list > Talk-GB@openstreetmap.org > https://lists.openstreetmap.org/listinfo/talk-gb >
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