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UK Postcode Location Discrepancies

Based on OSM data from 2017‑11‑14 19:27:02 Z, there are 321 addr:postcode tags on objects with location discrepancies. The criteria are for the location in OSM to differ from the Code-Point Open centroid by more than 1000 m and more than 3 times an estimate of the unit ratius for that postal sector. Objects marked as false positives are excluded from the counts, but still appear in the tables below. To mark an object as a false positive, please contact Robert Whittaker. The data below is currently updated sporadically, probably around once a week.

Top 20 Discrepancies by Distance

Postcode Dups OSM Object Discrepancy Notes
LD8 2SH   w285879460 8629 m OT Postcode given to "Radnor Range" but source unclear. Only postcode listed on the Range's website is for an office that isn't the actual range site. Royal Mail doesn't list the range under "LD8 2SH".
SY23 3AG   n3945421861 5650 m OT
TQ12 5AP (69) w228189749 5504 m OT TQ12 5AP seems to be a single PO Box address for "Strategic Management Resources", so isn't right for this post office. Can anyone find an acceptable source for the true postcode here?
BT94 5FD   w120012461 5151 m OT
LE9 8HD   w377592484 4970 m OT
LE9 8HD   w377592485 4930 m OT
LE9 8HD   n3809720352 4896 m OT
LE9 8HD   w377592486 4885 m OT
BT45 5QL   n4237710790 4684 m OT
CA1 2ST   w333073210 4581 m OT
EH40 3DY   w438418327 4317 m OT
SA38 9BX   n3247036291 4223 m OT
NG8 3PE   w256352921 4152 m OT
CW9 7NJ   w317515898 4129 m OT
DE4 3EQ   w80501570 4117 m OT
MK18 5JL   n4382368896 4105 m OT
NG8 3PD   w256352910 4097 m OT
PH22 1QU   w79409051 4060 m OT
BD17 7AY (238) w224788335 4049 m OT PO Box address for "Carnaud Metal Box", geo-located to the Bradford North Delivery Office. But OSM object doesn't have tags to confirm it is this location.
TA3 5RW   w371862133 4000 m OT

Discrepancies by Postal Area

AB Postal Area

Postcode Dups OSM Object Discrepancy Notes
AB12 4SP   w8038364 2085 m OT
AB42 1LT   r3380714 1048 m OT Correct postcode for Peterhead Golf Club.

B Postal Area

Postcode Dups OSM Object Discrepancy Notes
B26 3BB   w236558837 14819 m OT In the 2017-11 edition of Code-Point Open, this postcode's location is inexplicably about 15km out.
B2 4JU (427) w55451180 1916 m OT PO Box address for HSBC, geolocated to Birmingham Mail Centre.
B2 5JS (427) w100620799 1689 m OT
B45 8XJ   w220867663 1624 m OT
B3 1SB (427) w73077758 1563 m OT PO Box address for The Assay Office, geo-located to the Birmingham Mail Centre.
B45 9QZ   w127892337 1397 m OT
B30 2BT   n2165452768 1371 m OT
B4 6NQ (427) w28814005 1358 m OT
B30 2LU (34) w28331875 1342 m OT PO Box address for Cadbury Ltd, geo-located to King's Norton Delivery Office.
B63 4AB   n5118130081 1102 m OT

BA Postal Area

Postcode Dups OSM Object Discrepancy Notes
BA2 1ST   n4793809311 2373 m OT
BA3 2AA   n5073249206 1639 m OT

BD Postal Area

Postcode Dups OSM Object Discrepancy Notes
BD17 7AY (238) w224788335 4049 m OT PO Box address for "Carnaud Metal Box", geo-located to the Bradford North Delivery Office. But OSM object doesn't have tags to confirm it is this location.
BD16 2JS   n341448569 3506 m OT
BD23 1DN (37) r7394413 1313 m OT PO Box address for Skipton Building Society, geo-located to Skipton Delivery Office.
BD23 2HL (37) w204166193 1308 m OT PO Box address for HML, geo-located to Skipton Delivery Office.
BD20 0NL   w95195262 1249 m OT Incorrect postcode given on campsite website, but can't find acceptable source for the correct one.

BH Postal Area

Postcode Dups OSM Object Discrepancy Notes
BH20 5DE   w95954137 3165 m OT
BH6 4EW   n2424101176 1592 m OT
BH15 2BP   w354964707 1429 m OT

BN Postal Area

Postcode Dups OSM Object Discrepancy Notes
BN8 5NP   w463296964 1744 m OT Correct postcode for Chandlers Building Supplies Ltd.
BN14 0RQ   n380889130 1663 m OT Correct postcode for Southdown Gun Club Ltd.
BN2 5RA   w33526916 1113 m OT Correct postcode for golf club.

BS Postal Area

Postcode Dups OSM Object Discrepancy Notes
BS35 1RF   w118354830 2405 m OT
BS1 6ZA (2) w512683286 2111 m OT
BS1 6ZA (2) w512669637 2043 m OT
BS10 7SP   w377764520 1751 m OT
BS31 2SZ   w475553351 1600 m OT
BS39 7QF   n4804116411 1114 m OT
BS6 6YJ   w270971671 1063 m OT

BT Postal Area

Postcode Dups OSM Object Discrepancy Notes
BT94 5FD   w120012461 5151 m OT
BT45 5QL   n4237710790 4684 m OT
BT92 1DE   w480438263 3823 m OT
BT51 4UR   w535340598 3481 m OT
BT74 7JZ   w533922204 2751 m OT
BT14 6ST (2) w398481183 2699 m OT Correct postcode for Crumlin Road Gaol. Centroid location appears to be incorrect.
BT14 6ST (2) w398481191 2694 m OT Correct postcode for Crumlin Road Gaol. Centroid location appears to be incorrect.
BT14 6ST (2) w18839044 2643 m OT Correct postcode for Crumlin Road Gaol. Centroid location appears to be incorrect.
BT38 9AB   w402533967 2560 m OT Correct postcode for Woodburn Presbyterian Church.
BT38 9AB   w402533968 2541 m OT Correct postcode for Woodburn Presbyterian Manse.
BT28 2XF (2) w461428190 2508 m OT
BT28 2XF (2) n4569239514 2495 m OT
BT74 7JY   w533920222 2460 m OT
BT35 6BH   n960433657 2049 m OT Correct postcode for Newry Computer Centre, Monaghan Court. Centroid seems misplaced.
BT74 6DN   w180749233 1857 m OT Correct postcode for South West Acute Hospital, but other addresses in the unit are further down the road.
BT3 9DT   w158105578 1406 m OT Correct postcode for Titanic Premier Inn.

CA Postal Area

Postcode Dups OSM Object Discrepancy Notes
CA1 2ST   w333073210 4581 m OT
CA25 5HF   w331385064 1640 m OT

CB Postal Area

Postcode Dups OSM Object Discrepancy Notes
CB24 9NG   w273844446 2147 m OT
CB3 0QZ   w501347027 1439 m OT

CF Postal Area

Postcode Dups OSM Object Discrepancy Notes
CF14 1AE   n581294872 2498 m OT
CF72 8TL   w446367462 1657 m OT
CF83 3DZ   w469531759 1598 m OT
CF83 3DZ   w469531760 1570 m OT
CF3 2ER   n3796917055 1526 m OT
CF83 3DZ   w469531762 1512 m OT
CF37 1TE   n2841444609 1411 m OT
CF64 5SE   w439036079 1267 m OT
CF61 1RF   w422124062 1250 m OT
CF31 3LG   n3200023508 1248 m OT

CH Postal Area

Postcode Dups OSM Object Discrepancy Notes
CH46 7SJ   n4597864960 1489 m OT
CH2 2BL   n4815856705 1308 m OT

CM Postal Area

Postcode Dups OSM Object Discrepancy Notes
CM2 9XB (194) w182520212 3307 m OT PO Box address for BBC Essex, geo-located to Chelmsford Sorting Office.
CM16 6AR   w228460387 2345 m OT Correct postcode for North Weald Golf Club, but this Par 3 course is away from their main site. Should it have a different postcode?
CM1 1LX (194) w93175201 2283 m OT PO Box address for Essex County Council, geo-located to Chelmsford Sorting Office.
CM23 2DR   w479517788 1167 m OT

CO Postal Area

Postcode Dups OSM Object Discrepancy Notes
CO4 5QJ   w503378270 4637 m OT Correct postcode for Braiswick Primary School, but coordinates in Code-Point Open are misplaced.
CO11 2ND   w386362259 3929 m OT
CO16 9AJ   w295090524 2194 m OT
CO16 9AJ   w295090525 2190 m OT

CT Postal Area

Postcode Dups OSM Object Discrepancy Notes
CT13 9NJ (9) n266345732 1490 m OT PO Box address for Pfizer Ltd, geo-located to Royal Mail sorting office.
CT2 7NU   w367118590 1351 m OT

CV Postal Area

Postcode Dups OSM Object Discrepancy Notes
CV35 0AE   w207299276 4027 m OT Correct postcode for The American Barns.

CW Postal Area

Postcode Dups OSM Object Discrepancy Notes
CW9 7NJ   w317515898 4129 m OT
CW9 6NA   r4568259 2114 m OT Correct postcode for Arley Estate.
CW9 6NA   w326951263 1990 m OT Correct postcode for Arley Estate.
CW7 2PE   w41121976 1467 m OT

DA Postal Area

Postcode Dups OSM Object Discrepancy Notes
DA11 7NP   w165222847 1044 m OT
DA11 7NP   w165222839 1031 m OT

DD Postal Area

Postcode Dups OSM Object Discrepancy Notes
DD2 4TF   n294999595 1230 m OT

DE Postal Area

Postcode Dups OSM Object Discrepancy Notes
DE4 3EQ   w80501570 4117 m OT
DE3 0EP   w344470059 1688 m OT
DE1 1AP (127) w55083516 1518 m OT
DE7 6DF   w400666375 1500 m OT
DE11 0TL   w453345908 1466 m OT
DE7 8TG   w66745323 1277 m OT
DE55 5TX   n2638058668 1264 m OT
DE21 7BU   w345073213 1016 m OT
DE21 7BU   w345073212 1014 m OT
DE24 9SE   n827647311 1011 m OT

DL Postal Area

Postcode Dups OSM Object Discrepancy Notes
DL5 6EA   w96399792 1107 m OT Correct postcode for golf club.

DN Postal Area

Postcode Dups OSM Object Discrepancy Notes
DN35 0PW   w82863005 1258 m OT Correct postcode for Thorpe Park Caravan Park.

DY Postal Area

Postcode Dups OSM Object Discrepancy Notes
DY11 7EX   w81667685 1077 m OT

E Postal Area

Postcode Dups OSM Object Discrepancy Notes
E11 4DA   w509649570 1126 m OT
E8 4DG   w370369101 1012 m OT

EC Postal Area

Postcode Dups OSM Object Discrepancy Notes
EC2R 8LA (1184) n2642857076 2089 m OT PO Box address for RBS, geo-located to the Mount Pleasant Mail Centre.
EC2P 2EJ (1184) w539320740 1669 m OT
EC3N 1AB   w170205774 1488 m OT
EC4P 4DQ (1184) w161420167 1197 m OT PO Box address for C Hoare & Co, geo-located to the Mount Pleasant Mail Centre
EC2V 7HH   n5079481020 1009 m OT

EH Postal Area

Postcode Dups OSM Object Discrepancy Notes
EH40 3DY   w438418327 4317 m OT
EH10 4HZ (26) n2899465850 1271 m OT
EH39 4BB   w44698834 1207 m OT
EH47 7BW   w98709994 1135 m OT
EH33 1EJ   w107569572 1095 m OT

EN Postal Area

Postcode Dups OSM Object Discrepancy Notes
EN5 4RE   w8044592 1006 m OT Golf course in sparse unit.

FK Postal Area

Postcode Dups OSM Object Discrepancy Notes
FK9 5PY   w85565754 1416 m OT
FK8 1QZ   w216742546 1097 m OT Correct postcode for The Peak leisure centre.

FY Postal Area

Postcode Dups OSM Object Discrepancy Notes
FY6 7LJ   w242320848 1811 m OT
FY6 7LB   n4735893673 1276 m OT

G Postal Area

Postcode Dups OSM Object Discrepancy Notes
G12 0XR   n600374112 1758 m OT
G12 0XR   n4232679791 1750 m OT
G67 3HU   w232115822 1226 m OT
G43 1AT   w32661200 1021 m OT

GU Postal Area

Postcode Dups OSM Object Discrepancy Notes
GU6 7SQ   w281124035 1012 m OT

HA Postal Area

Postcode Dups OSM Object Discrepancy Notes
HA5 4QT   n5109300711 3967 m OT
HA5 4QT   n5178568892 3952 m OT
HA5 4QT   n4770679165 3950 m OT
HA1 3TU   w2257640 1021 m OT

HG Postal Area

Postcode Dups OSM Object Discrepancy Notes
HG3 2FT   w241614717 7676 m OT Appears to be correct postcode for private operators of former Forest Moor site, but postcode centroid is geo-located on a housing estate several km away.

HP Postal Area

Postcode Dups OSM Object Discrepancy Notes
HP9 2RP (2) w518519502 3037 m OT

HR Postal Area

Postcode Dups OSM Object Discrepancy Notes
HR1 1EB   w379511869 1041 m OT

HU Postal Area

Postcode Dups OSM Object Discrepancy Notes
HU15 1UD   w516477590 1669 m OT
HU15 1UD   w516477589 1617 m OT

IG Postal Area

Postcode Dups OSM Object Discrepancy Notes
IG7 4QW   w25925045 1148 m OT Postcode correct, but area occupied by golf club is large.

IV Postal Area

Postcode Dups OSM Object Discrepancy Notes
IV24 3DP   w130127379 7638 m OT Correct postcode for Carbisdale Castle in sparse unit.

KA Postal Area

Postcode Dups OSM Object Discrepancy Notes
KA9 2PL (3) w97095239 1260 m OT
KA10 6SY   w248434900 1033 m OT

KY Postal Area

Postcode Dups OSM Object Discrepancy Notes
KY12 8AP   w480214039 2094 m OT
KY2 5LT   w128632438 1288 m OT
KY3 9LQ   w384844319 1039 m OT

L Postal Area

Postcode Dups OSM Object Discrepancy Notes
L33 7YN   w314024341 1608 m OT
L9 5AS   w121110632 1031 m OT

LA Postal Area

Postcode Dups OSM Object Discrepancy Notes
LA14 1AF   w92905733 3346 m OT
LA23 1ES   n4248019773 2723 m OT
LA9 6LL   w354311176 1668 m OT
LA9 6LL   n5106424191 1632 m OT
LA9 6LL   n5106424190 1567 m OT
LA9 6LL   w524628438 1555 m OT

LD Postal Area

Postcode Dups OSM Object Discrepancy Notes
LD8 2SH   w285879460 8629 m OT Postcode given to "Radnor Range" but source unclear. Only postcode listed on the Range's website is for an office that isn't the actual range site. Royal Mail doesn't list the range under "LD8 2SH".

LE Postal Area

Postcode Dups OSM Object Discrepancy Notes
LE9 8HD   w377592484 4970 m OT
LE9 8HD   w377592485 4930 m OT
LE9 8HD   n3809720352 4896 m OT
LE9 8HD   w377592486 4885 m OT
LE11 3UE   n815706991 2062 m OT
LE6 0XZ   n2134289682 2033 m OT
LE11 3TU   w258984358 1527 m OT
LE16 9RP   n4884159991 1482 m OT
LE11 3TU   r1020004 1363 m OT
LE11 3TW   w38046982 1356 m OT
LE9 4JA   w214789487 1201 m OT
LE2 5SF   n4719117160 1177 m OT
LE3 3LR   w532690700 1118 m OT
LE2 5SF   n4719117175 1081 m OT
LE2 5SF   n4719117170 1046 m OT

LL Postal Area

Postcode Dups OSM Object Discrepancy Notes
LL28 4UL (2) w401676143 1735 m OT
LL72 8HA   w88732003 1240 m OT

LN Postal Area

Postcode Dups OSM Object Discrepancy Notes
LN3 4HU   w455546982 4110 m OT Correct postcode for Fiskerton CofE Primary School, in a unit covering a large area.
LN6 8NH   n2632172888 2636 m OT

LS Postal Area

Postcode Dups OSM Object Discrepancy Notes
LS17 8NB   w530803731 2714 m OT
LS27 8RD   w286250968 1563 m OT
LS1 1LD (199) n339923493 1117 m OT PO box address for HSBC Leeds, geo-located to Leeds City Delivery Office.
LS18 5BS   n1221670544 1040 m OT

M Postal Area

Postcode Dups OSM Object Discrepancy Notes
M90 1QX (3) r1224469 1420 m OT Correct postcode for Manchester Airport
M13 9PL   w436868788 1259 m OT
M13 9PL   w79714496 1236 m OT

MK Postal Area

Postcode Dups OSM Object Discrepancy Notes
MK17 9WA (168) w204367048 8329 m OT PO Box address for Woburn Abbey, geo-located to Brinklow Sorting Office.
MK18 5JL   n4382368896 4105 m OT
MK40 2LE   w88028950 2042 m OT
MK42 9GP   w95235567 1125 m OT

ML Postal Area

Postcode Dups OSM Object Discrepancy Notes
ML7 4NS   w222199287 1673 m OT
ML5 4HX   n1911766624 1645 m OT
ML5 1RX   w22959777 1192 m OT
ML3 7TU   w338233361 1012 m OT

N Postal Area

Postcode Dups OSM Object Discrepancy Notes
N1 1GB   n3802420331 1503 m OT
N1 1GA (828) n3802420329 1427 m OT PO Box address, geo-located to a former Royal Mail sorting centre, which is now a residential development. Only a box number in the PO Box address, so unable to verify it's correct for this location.
N1 1GD (828) n3802420330 1393 m OT PO Box address, geo-located to a former Royal Mail sorting centre, which is now a residential development. Only a box number in the PO Box address, so unable to verify it's correct for this location.
N16 0EN   n4756747764 1093 m OT

NE Postal Area

Postcode Dups OSM Object Discrepancy Notes
NE5 1NL   w332317673 2235 m OT Correct postcode for Jingling Gate Inn in sparse unit with only two delivery points.
NE65 0UD   w259984434 1191 m OT Incorrect postcode, but cannot find acceptable source for the correct one.

NG Postal Area

Postcode Dups OSM Object Discrepancy Notes
NG8 3PE   w256352921 4152 m OT
NG8 3PD   w256352910 4097 m OT
NG4 3PY   n4929309857 2747 m OT
NG4 3PY   n4929309847 2745 m OT
NG4 3PY   n4929309848 2744 m OT
NG24 4DB   w211154521 2734 m OT
NG4 3PY   n4929309846 2732 m OT
NG4 3PY   n4929309858 2731 m OT
NG4 3PY   n4929309859 2729 m OT
NG4 3PY   n4929309860 2728 m OT
NG4 3PY   n4929309889 2717 m OT
NG4 3PY   n4929309888 2716 m OT
NG4 3PY   n4929309887 2714 m OT
NG24 4DB   w211154522 2680 m OT
NG4 3PY   n4928388449 2676 m OT
NG4 3PY   n4928388441 2675 m OT
NG4 3PY   n4928388222 2673 m OT
NG7 2AY   n1111714857 2626 m OT
NG8 2NH   w38452338 2555 m OT
NG5 9EU   w509850110 2341 m OT
NG5 9EU   w509850109 2334 m OT
NG5 9EU   w509850112 2254 m OT
NG5 9EU   w509850111 2247 m OT
NG12 3HB   w71223887 2068 m OT
NG16 2WX   n5003559296 1844 m OT
NG16 2WX   n5003559293 1834 m OT
NG16 2WX   n5003559297 1834 m OT
NG16 2WX   n5003559292 1828 m OT
NG12 5PR   w292829820 1801 m OT
NG12 3HG   w220593558 1790 m OT
NG16 2WX   n5003524774 1777 m OT
NG2 2DX   n2816160502 1728 m OT
NG2 2DX   n2816160188 1727 m OT
NG16 2JP   n5051595384 1715 m OT
NG16 2WX   n5003524782 1585 m OT
NG16 2WX   n5003524776 1577 m OT
NG16 2WX   n5003524777 1569 m OT
NG16 2WX   n5003559290 1562 m OT
NG5 2BJ   w275958114 1559 m OT
NG16 2WX   n5003559298 1555 m OT
NG16 2WX   n5003559291 1548 m OT
NG5 2BJ   w503113420 1546 m OT
NG16 2WX   n5003559295 1543 m OT
NG16 2WX   n5003524785 1538 m OT
NG5 2BJ   w503113422 1538 m OT
NG5 2BJ   w275958429 1523 m OT
NG16 2WX   n5003524781 1522 m OT
NG16 2WX   n5003559294 1514 m OT
NG16 2WX   n5003524784 1502 m OT
NG16 2WX   n5003524773 1499 m OT
NG16 2WX   n5003524783 1490 m OT
NG16 2WX   n5003524780 1489 m OT
NG16 2WX   n5003524786 1482 m OT
NG3 4QL   n3741787790 1441 m OT
NG3 4QL   n2287071849 1436 m OT
NG16 2WX   n5003524778 1413 m OT
NG9 8GF   w64484724 1352 m OT
NG7 2RD   w23331349 1269 m OT
NG6 8BQ   w58744325 1258 m OT
NG10 2FY   w48333629 1153 m OT
NG2 7PA   w80849725 1140 m OT
NG9 6GX   n307578833 1069 m OT
NG3 5RT   w524048660 1067 m OT
NG1 3PQ (6) w165120090 1044 m OT
NG21 9JF   w263739583 1035 m OT
NG9 3GJ   w64484741 1014 m OT
NG9 3PQ   w88070440 1004 m OT

NN Postal Area

Postcode Dups OSM Object Discrepancy Notes
NN15 5JR (36) w86435409 4294 m OT PO Box address for Weetabix, geo-located to Royal Mail depot.
NN4 9EU   n5204105115 3101 m OT
NN17 9RS (68) r7234451 2402 m OT
NN16 8XF   n1054459165 1399 m OT
NN10 6AN   n813566704 1325 m OT
NN16 8XF   n1363190343 1019 m OT

NP Postal Area

Postcode Dups OSM Object Discrepancy Notes
NP16 7JR   w372743566 1764 m OT
NP12 2BE   w531061330 1593 m OT
NP10 9DW   w367485810 1001 m OT

NR Postal Area

Postcode Dups OSM Object Discrepancy Notes
NR9 5DX (44) w74483046 8817 m OT Postcode is correct, but geo-location is at the Wymondham Royal Mail Delivery Office.
NR1 3NS (298) r7634826 3175 m OT PO Address for Aviva Insurance, geo-located at local delivery office.
NR1 3NG (298) w530858011 3172 m OT PO Address for Aviva Insurance, geo-located at local delivery office.
NR8 6JG   w225581784 1187 m OT Postcode correct, but for an outlying farm, about 1km off the main road.

OL Postal Area

Postcode Dups OSM Object Discrepancy Notes
OL5 0EX   w96926865 8231 m OT Error in Code-Point Open coordinates for this postcode. According to Royal Mail its for Chapel Street Mossley, but coordinates are for Chapel Street, Hyde.
OL14 8RY   w237000762 1305 m OT Postcode correct, but in sparse unit.

OX Postal Area

Postcode Dups OSM Object Discrepancy Notes
OX11 8SL   w517642219 2257 m OT

PA Postal Area

Postcode Dups OSM Object Discrepancy Notes
PA48 7UE   w99433632 4055 m OT Correct postcode for Port Mhor Centre in sparse unit.
PA23 8JJ   w197974819 3773 m OT
PA2 6LL   w160623729 1356 m OT

PE Postal Area

Postcode Dups OSM Object Discrepancy Notes
PE28 9HS   w435108313 3678 m OT
PE28 9HS   n4330640280 3660 m OT
PE28 9HS   w128494595 3605 m OT
PE37 8DA   w196959552 3070 m OT According to Royal Mail, this is the correct postcode for St Andrew's School. But Royal Mail lists the other addresses with this postcode (and places the geo-location) on South Pickenham Road, Swaffham. The school is on South Pickenham Road, North Pickenham.
PE37 7TZ   w135407939 2800 m OT
PE7 3UN   w167589699 2735 m OT
PE28 9HL   n4330640647 1962 m OT
PE16 6RY   w378287100 1894 m OT
PE28 4NJ   w371360198 1754 m OT
PE27 3LY   n4019830057 1507 m OT
PE28 4WX   w218746835 1434 m OT
PE27 4NB   w217129260 1429 m OT Correct postcode for St Ives Golf Club.
PE25 1JU   w230893732 1403 m OT
PE27 3LY   n4377480722 1044 m OT

PH Postal Area

Postcode Dups OSM Object Discrepancy Notes
PH33 6SA   w210645381 5189 m OT Correct postcode for Lochleven Shellfish in sparse unit.
PH33 6SA   w210645379 4606 m OT Correct postcode for Loch Leven Chalets, in sparse unit.
PH22 1QU   w79409051 4060 m OT
PH3 1LL   w507053327 3140 m OT
PH3 1LL   w507053325 3053 m OT
PH3 1LL   w507053328 3022 m OT
PH3 1LL   w507053323 2980 m OT
PH3 1LL   w507053322 2905 m OT
PH3 1PP   w506085684 2761 m OT
PH3 1PP   w506085683 2742 m OT

PL Postal Area

Postcode Dups OSM Object Discrepancy Notes
PL19 9NB   w398891422 2676 m OT
PL25 3RD   r3883235 1213 m OT
PL7 2DE   w180921071 1202 m OT

PO Postal Area

Postcode Dups OSM Object Discrepancy Notes
PO20 8AJ   n319431144 3301 m OT
PO34 5EJ   w99174633 2185 m OT
PO36 9HT   n4614280256 2035 m OT
PO33 1GD   n4391429873 1079 m OT
PO12 1EJ   n3529203584 1058 m OT
PO12 1EJ   n3529203585 1053 m OT

PR Postal Area

Postcode Dups OSM Object Discrepancy Notes
PR8 9LZ (99) w376386706 3283 m OT
PR8 6XU   w370190662 2481 m OT
PR8 2LU   w25720410 1207 m OT

RG Postal Area

Postcode Dups OSM Object Discrepancy Notes
RG30 3BR   w68825275 3281 m OT
RG6 3BH   w112390602 2924 m OT
RG1 1SX (290) n2964955569 2730 m OT
RG1 5HE   w80965299 2477 m OT
RG6 6AH (89) n4751291621 2018 m OT PO Box address for University of Reading, geo-located to Royal Mail Office.
RG6 6AH (89) w87312375 1759 m OT PO Box address for University of Reading, geo-located to Royal Mail Office.
RG22 4NB   w22767558 1081 m OT

RH Postal Area

Postcode Dups OSM Object Discrepancy Notes
RH13 9BD   w254035118 1852 m OT
RH2 9JP   n60965760 1719 m OT
RH4 1DW   w27555754 1396 m OT
RH1 6HQ   n479799855 1357 m OT
RH10 3EQ   w444058218 1188 m OT

S Postal Area

Postcode Dups OSM Object Discrepancy Notes
S9 1JD (115) w138210187 5559 m OT PO Box address for Firth Rixson, geo-located to Royal Mail depot.
S26 5PQ   n2361868737 2365 m OT
S63 7FD   w301832317 1883 m OT
S36 2DT   n2812307166 1771 m OT
S25 3QW   n2081227053 1679 m OT
S26 5PQ   r4254388 1424 m OT
S11 8PP   w265387743 1190 m OT
S80 1NU   w28540439 1171 m OT
S1 2AR   r7333624 1083 m OT

SA Postal Area

Postcode Dups OSM Object Discrepancy Notes
SA38 9BX   n3247036291 4223 m OT
SA1 1QT (105) w146489836 3434 m OT
SA62 6YD   w308479532 3325 m OT
SA69 9DB   n1041025459 2224 m OT
SA4 3US   w129111420 1377 m OT
SA73 3ER   w524963613 1352 m OT
SA4 3US   w129111419 1344 m OT
SA4 3UP   w129312088 1328 m OT
SA3 3DD   w89731971 1169 m OT
SA3 3DD   w89731993 1163 m OT
SA3 3DD   w89731979 1158 m OT

SE Postal Area

Postcode Dups OSM Object Discrepancy Notes
SE9 2BD   n1210283144 1491 m OT

SK Postal Area

Postcode Dups OSM Object Discrepancy Notes
SK12 2NS   w41225189 2044 m OT

SL Postal Area

Postcode Dups OSM Object Discrepancy Notes
SL4 6QP   w220747309 1940 m OT

SN Postal Area

Postcode Dups OSM Object Discrepancy Notes
SN3 3LD (168) n2942642707 2567 m OT
SN13 9NR   w260475659 2539 m OT

SO Postal Area

Postcode Dups OSM Object Discrepancy Notes
SO16 3PB   n2644416004 2526 m OT
SO14 3ET   n668141899 1522 m OT
SO50 7HD   n245492025 1434 m OT Correct postcode for petrol station, in unit that covers a long length of road.
SO50 7HD   n4167385014 1431 m OT Correct postcode for Tesco Express, in unit that covers a long length of road.
SO16 8HY   n4345157193 1395 m OT
SO52 9DF   w464352010 1310 m OT Correct postcode for Bridge House. Unit covers a long length of the road.
SO52 9DF   w464352009 1295 m OT Correct postcode for 2 Flexford Road. Unit covers a long length of the road.
SO52 9DF   w464352011 1282 m OT Correct postcode for Cenarth House. Unit covers a long length of the road.
SO52 9DF   w464352018 1251 m OT Correct postcode for Flexford Cottage. Unit covers a long length of the road.
SO30 2EY   n4794842225 1239 m OT
SO52 9DF   w464352019 1211 m OT Correct postcode for Luckyland. Unit covers a long length of the road.
SO40 7AA   w380728762 1131 m OT
SO40 7AA   n1241413252 1128 m OT
SO52 9DF   w464352020 1094 m OT Correct postcode for house on Flexford Road. Unit covers a long length of the road.
SO15 4JT   w380560287 1033 m OT

SP Postal Area

Postcode Dups OSM Object Discrepancy Notes
SP3 4DX   w37118074 2910 m OT

ST Postal Area

Postcode Dups OSM Object Discrepancy Notes
ST11 9LJ   w257747869 3219 m OT
ST5 0QX (20) w334100136 2346 m OT
ST9 9EA   w400675584 1752 m OT
ST3 1HD   w308110446 1731 m OT
ST1 6BT   w255392417 1708 m OT
ST15 8UX   w513022268 1626 m OT
ST6 4DL   w333887168 1518 m OT
ST5 4EB   w261968225 1272 m OT
ST4 2LJ   w230254603 1254 m OT
ST5 7JS   w71045028 1221 m OT
ST13 5RG (22) w37651454 1150 m OT
ST13 5RG (22) w37651455 1109 m OT

SY Postal Area

Postcode Dups OSM Object Discrepancy Notes
SY23 3AG   n3945421861 5650 m OT
SY21 7LG   w303093490 2014 m OT
SY21 7HG   w302308562 1785 m OT

TA Postal Area

Postcode Dups OSM Object Discrepancy Notes
TA3 5RW   w371862133 4000 m OT
TA6 7BY   w528210877 1392 m OT
TA8 2PE   w134774103 1347 m OT
TA6 4GZ   w257183654 1248 m OT

TF Postal Area

Postcode Dups OSM Object Discrepancy Notes
TF4 3BT   w402702981 1119 m OT Correct postcode for Horsehay Village Golf Centre.

TQ Postal Area

Postcode Dups OSM Object Discrepancy Notes
TQ12 5AP (69) w228189749 5504 m OT TQ12 5AP seems to be a single PO Box address for "Strategic Management Resources", so isn't right for this post office. Can anyone find an acceptable source for the true postcode here?
TQ5 0LA   r3618561 1080 m OT

TR Postal Area

Postcode Dups OSM Object Discrepancy Notes
TR16 4BQ   n5228337510 1214 m OT

W Postal Area

Postcode Dups OSM Object Discrepancy Notes
W1A 2LQ (1184) w25016088 3218 m OT US Embassy address, geo-located to Mount Pleasant Mail Centre.
W1A 1EX (1184) n4114911452 2525 m OT PO Box address for John Lewis, geo-located to the Mount Pleasant Mail Centre.

WA Postal Area

Postcode Dups OSM Object Discrepancy Notes
WA14 1JY (2) w496985908 1565 m OT
WA7 3AB   w290196520 1008 m OT

WC Postal Area

Postcode Dups OSM Object Discrepancy Notes
WC2R 0EU (1184) w95199889 1714 m OT PO Box address for the Savoy Hotel, geo-located to the Mount Pleasant Dorting Office.
WC2B 4EJ (1184) n311416051 1283 m OT PO Box address, geo-located to Mount Pleasant Mail Centre.

WD Postal Area

Postcode Dups OSM Object Discrepancy Notes
WD4 8UD (2) w308644612 10703 m OT Error in Code-Point Open coordinates, which put the location in the 10km away in HP4 district.

WR Postal Area

Postcode Dups OSM Object Discrepancy Notes
WR5 2PU   w392837189 3082 m OT According to Royal Mail, this postcode is incorrect. But I can't find an OSM-compatible source to fix it.
WR11 2RB   w275289291 1720 m OT According to Royal Mail, this postcode is incorrect. But I can't find an OSM-compatible source to fix it.

YO Postal Area

Postcode Dups OSM Object Discrepancy Notes
YO32 9TE   w351752613 1406 m OT Correct postcode; unit just covers a large area.
YO32 9TE   w351752614 1391 m OT Correct postcode; unit just covers a large area.
YO32 9TD   w129553602 1345 m OT Postcode correct; unit covers a large area.
YO1 9YN (87) w379376060 1255 m OT PO Box address, with postcode centroid at Royal Mail Delivery Office.
YO10 5DY   r3344724 1229 m OT Correct postcode for golf course.

A total of 73 instances have been marked as false positives.

Postcodes flagged as having Location Errors in Code-Point Open

Postcode Dups OSM Object Discrepancy Notes
B26 3BB   w236558837 14819 m OT In the 2017-11 edition of Code-Point Open, this postcode's location is inexplicably about 15km out.
WD4 8UD (2) w308644612 10703 m OT Error in Code-Point Open coordinates, which put the location in the 10km away in HP4 district.
OL5 0EX   w96926865 8231 m OT Error in Code-Point Open coordinates for this postcode. According to Royal Mail its for Chapel Street Mossley, but coordinates are for Chapel Street, Hyde.
HG3 2FT   w241614717 7676 m OT Appears to be correct postcode for private operators of former Forest Moor site, but postcode centroid is geo-located on a housing estate several km away.
CO4 5QJ   w503378270 4637 m OT Correct postcode for Braiswick Primary School, but coordinates in Code-Point Open are misplaced.
BT14 6ST (2) w398481183 2699 m OT Correct postcode for Crumlin Road Gaol. Centroid location appears to be incorrect.
BT14 6ST (2) w398481191 2694 m OT Correct postcode for Crumlin Road Gaol. Centroid location appears to be incorrect.
BT14 6ST (2) w18839044 2643 m OT Correct postcode for Crumlin Road Gaol. Centroid location appears to be incorrect.
BT35 6BH   n960433657 2049 m OT Correct postcode for Newry Computer Centre, Monaghan Court. Centroid seems misplaced.

Data derived from OpenStreetMap data, © OpenStreetMap Contributors, licensed under Open Data Commons Open Database License (ODbL). OSM data obtained via Overpass API. Data derived in part using Code-Point Open under the Open Government Licence v3; Contains OS data © Crown copyright and database right 2016; Contains Royal Mail data © Royal Mail copyright and Database right 2016; Contains National Statistics data © Crown copyright and database right 2016.