The circles on the map above are the postcode unit 'centriods' from Code-Point Open, under the Open Government Licence. The 'centriod' is calculated by taking the average of the coordinates of all the delivery points with that postcode, and then snapping that location to the nearest delivery point in that postcode. The data may be freely used in OpenStreetMap, but please make sure you understand it first. Also please only add postcodes to objects representing addressable entities; do not add the postcode centroids as themslves. Suggested source tag code-point_open
The circles are coloured by whether or not there is at least one OSM object with that value in its addr:postcode tag. Click on a point to see the postcode. The numbers in brackets are the number of OSM objects with that postcode.
The centroids are the location of the nearest 'delivery point' to the arithmetic mean of the coordinates of all the delivery points within that unit. Those points with a codepoint PQI greater than 40 are excluded from the map above. (Higher values are typically not geographically accurate. In particular, PQI=50 is used for new postcodes before the location has been determined. The location given for such postcodes seems to be derived from other existing postcodes with similar units letters, which may not be close to the new postcode.)
The pale blue lines from the circles join each Code-Point Open centroid to the mean coordiantes of all the OSM objects with that postcode. (For ways an relations, the centre of the rectangular bounding box is used at the coordinates for the OSM object.) Long lines may indicate missing or incorrect OSM objects for that postcode. In particular, if all the postcodes in a givne unit are correctly mapped, the circle should be located on the nearest delivery point within that postcode to the other end of the blue line.
The OSM data for the number of objects with each unit is usually updated once a day at about 10:15 UTC, with data from about 20:30 UTC the previous day. The data used to compute the OSM mean position is updated less frequently, usually about once a week.
District | Sector | Units | Geo. Units | Mapped | % |
---|---|---|---|---|---|
SW1P | 3 | 98 | 92 | 24 | 26.1% |
All units within this sector:
Unit | PQI | First Seen | Last Seen | Street Name | ML | Mapped |
---|---|---|---|---|---|---|
SW1P 3AA | 10 | Great George Street | 2 | 1 | ||
SW1P 3AB | 10 | 2013‑07 | 0 | |||
SW1P 3AD | 10 | Great George Street | 1 | |||
SW1P 3AE | 10 | Great George Street | 4 | |||
SW1P 3AF | 10 | 2 | 0 | |||
SW1P 3AL | 10 | 2 | 0 | |||
SW1P 3AN | 50 | 2 | 0 | |||
SW1P 3AP | 10 | 2015‑10 | 0 | |||
SW1P 3AQ | 10 | 0 | ||||
SW1P 3AT | 10 | Storey's Gate | 1 | |||
SW1P 3AY | 10 | 0 | ||||
SW1P 3AZ | 10 | Great Smith Street | 7 | 2 | ||
SW1P 3BD | 10 | Parliament Square | 2 | 1 | ||
SW1P 3BH | 10 | 2021‑12 | 285 | 0 | ||
SW1P 3BJ | 10 | 2015‑10 | 0 | |||
SW1P 3BL | 10 | Great Smith Street | 7 | 1 | ||
SW1P 3BN | 10 | Great Smith Street | 7 | 1 | ||
SW1P 3BP | 10 | 0 | ||||
SW1P 3BQ | 10 | 0 | ||||
SW1P 3BT | 10 | Great Smith Street | 1 | |||
SW1P 3BU | 10 | Great Smith Street | 1 | |||
SW1P 3DJ | 10 | Great Smith Street | 7 | 1 | ||
SW1P 3DN | 10 | 7 | 0 | |||
SW1P 3DP | 10 | Marsham Street | 3 | |||
SW1P 3DQ | 10 | 0 | ||||
SW1P 3DR | 10 | Marsham Street | 2 | 1 | ||
SW1P 3DS | 10 | 2 | 0 | |||
SW1P 3DW | 10 | 0 | ||||
SW1P 3EE | 10 | Broad Sanctuary | 1 | |||
SW1P 3EP | 10 | 0 | ||||
SW1P 3ER | 10 | 2 | 0 | |||
SW1P 3EU | 10 | Smith Square | 2 | 1 | ||
SW1P 3GE | 10 | 2018‑10 | 0 | |||
SW1P 3HA | 10 | 0 | ||||
SW1P 3HB | 10 | 0 | ||||
SW1P 3HE | 10 | 0 | ||||
SW1P 3HF | 10 | 0 | ||||
SW1P 3HL | 10 | 0 | ||||
SW1P 3HN | 10 | 0 | ||||
SW1P 3HP | 10 | 0 | ||||
SW1P 3HQ | 10 | 2 | 0 | |||
SW1P 3HS | 10 | 0 | ||||
SW1P 3HT | 10 | 0 | ||||
SW1P 3HX | 10 | 2 | 0 | |||
SW1P 3HZ | 10 | 0 | ||||
SW1P 3JA | 10 | 2 | 0 | |||
SW1P 3JH | 10 | 0 | ||||
SW1P 3JJ | 10 | 2 | 0 | |||
SW1P 3JQ | 10 | 2 | 0 | |||
SW1P 3JR | 10 | 2 | 0 | |||
SW1P 3JS | 10 | 0 | ||||
SW1P 3JT | 10 | 0 | ||||
SW1P 3JU | 10 | 2 | 0 | |||
SW1P 3JX | 10 | 0 | ||||
SW1P 3JY | 10 | 0 | ||||
SW1P 3LA | 10 | 0 | ||||
SW1P 3LB | 10 | 0 | ||||
SW1P 3LD | 10 | 0 | ||||
SW1P 3LL | 10 | 0 | ||||
SW1P 3LN | 10 | 0 | ||||
SW1P 3LR | 10 | 0 | ||||
SW1P 3LT | 10 | 0 | ||||
SW1P 3LW | 10 | 0 | ||||
SW1P 3LX | 10 | 2013‑07 | 2 | 0 | ||
SW1P 3LZ | 10 | 0 | ||||
SW1P 3NB | 10 | 0 | ||||
SW1P 3NE | 10 | 0 | ||||
SW1P 3NG | 10 | 0 | ||||
SW1P 3NL | 10 | 0 | ||||
SW1P 3NP | 10 | 0 | ||||
SW1P 3NQ | 10 | 0 | ||||
SW1P 3NR | 10 | 0 | ||||
SW1P 3NY | 10 | Dean's Yard | 1 | |||
SW1P 3NZ | 10 | 7 | 0 | |||
SW1P 3PA | 10 | Dean's Yard | 2 | |||
SW1P 3PB | 10 | 0 | ||||
SW1P 3PD | 10 | 0 | ||||
SW1P 3PF | 10 | 1 | ||||
SW1P 3PG | 10 | 0 | ||||
SW1P 3PH | 10 | 0 | ||||
SW1P 3PJ | 10 | 0 | ||||
SW1P 3PL | 10 | 0 | ||||
SW1P 3PP | 10 | 2017‑01 | 0 | |||
SW1P 3PQ | 10 | 0 | ||||
SW1P 3PS | 10 | Great Smith Street | 7 | 2 | ||
SW1P 3QA | 10 | 0 | ||||
SW1P 3QB | 10 | 0 | ||||
SW1P 3QE | 10 | 0 | ||||
SW1P 3QH | 10 | 0 | ||||
SW1P 3QL | 10 | 0 | ||||
SW1P 3QN | 10 | 2013‑07 | 0 | |||
SW1P 3QS | 10 | 2013‑07 | 2 | 0 | ||
SW1P 3QX | 10 | 0 | ||||
SW1P 3QY | 10 | Tufton Street | 1 | |||
SW1P 3QZ | 10 | Tufton Street | 1 | |||
SW1P 3RA | 10 | 0 | ||||
SW1P 3RB | 10 | Tufton Street | 2 | |||
SW1P 3RD | 10 | 0 | ||||
SW1P 3RE | 10 | Romney Street | 0 | |||
SW1P 3RF | 10 | Romney Street | 1 | |||
SW1P 3RT | 10 | 0 | ||||
SW1P 3RX | 10 | Great College Street | 1 | |||
SW1P 3SA | 10 | 2017‑10 | 0 | |||
SW1P 3SE | 10 | 0 | ||||
SW1P 3SF | 10 | 2 | 0 | |||
SW1P 3SH | 10 | 0 | ||||
SW1P 3SJ | 10 | 2015‑10 | 2 | 0 | ||
SW1P 3WA | 10 | 4 | 0 | |||
SW1P 3WB | 10 | 2019‑01 | 0 | |||
SW1P 3WH | 10 | 2019‑01 | 0 | |||
SW1P 3WJ | 10 | 2019‑01 | 0 | |||
SW1P 3WP | 10 | 285 | 0 | |||
SW1P 3WQ | 10 | 2020‑07 | 285 | 0 | ||
SW1P 3WR | 10 | 2018‑10 | 0 | |||
SW1P 3WS | 10 | 2020‑07 | 285 | 0 | ||
SW1P 3WT | 10 | 285 | 0 | |||
SW1P 3XA | 10 | 285 | 0 | |||
SW1P 3XB | 10 | 2013‑07 | 0 | |||
SW1P 3XE | 10 | 2019‑01 | 0 | |||
SW1P 3XF | 10 | 4 | 0 | |||
SW1P 3XG | 10 | 2019‑01 | 0 | |||
SW1P 3XH | 10 | 2019‑01 | 0 | |||
SW1P 3XJ | 10 | 2019‑01 | 0 | |||
SW1P 3XN | 10 | 2019‑01 | 0 | |||
SW1P 3XP | 10 | 2019‑01 | 0 | |||
SW1P 3XQ | 10 | 285 | 0 | |||
SW1P 3XR | 10 | 2016‑10 | 2 | 0 | ||
SW1P 3XT | 10 | 2015‑10 | 0 | |||
SW1P 3YB | 10 | 2015‑10 | 0 | |||
SW1P 3ZB | 10 | 2013‑07 | 0 | |||
SW1P 3ZS | 10 | 2013‑07 | 0 | |||
SW1P 3ZU | 10 | 4 | 0 |
Units with street mismatches in this sector:
Unit | Mapped | Dominant Street | OSM Object | Tagged Street |
---|---|---|---|---|
SW1P 3AZ | 2 | Great␣Smith␣Street | w359221823 | |
SW1P 3AZ | 2 | Great␣Smith␣Street | w359221826 | |
SW1P 3BN | 1 | Great␣Smith␣Street | w359221836 | |
SW1P 3DJ | 1 | Great␣Smith␣Street | w359221819 | |
SW1P 3PA | 2 | Dean's␣Yard | w359221844 | |
SW1P 3PF | 1 | r9346126 | ||
SW1P 3PS | 2 | Great␣Smith␣Street | w359221829 | |
SW1P 3PS | 2 | Great␣Smith␣Street | w359221833 | |
SW1P 3QY | 1 | Tufton␣Street | w359221853 | |
SW1P 3QZ | 1 | Tufton␣Street | w359221840 |