Use this guide to understand SW1Y 4AJ in Westminster. Start with the interactive location and approximate postcode outline, then browse the available facts and local-area indicators. Labels show which figures relate to the exact postcode and which cover a larger geography.
High-quality vector file formats. Instant download. Next-day prints.
Create a Custom MapChoose the type of postcode map that matches the level of detail and editing control you need.
Download layered UK postcode area, district and sector maps in formats including Adobe Illustrator, PDF and SVG. Individual boundaries can be coloured and edited for reports, presentations and print.
Browse Vector Map Files
Create sales territories, delivery zones or heat maps without specialist mapping software. Try the postcode sector map tool, then save and export maps with full access.
Try the Sector Map ToolReady-made vector files cover postcode areas, districts and sectors. For a map focused on the full SW1Y 4AJ postcode or its approximate address-derived outline, ask us about custom digital and printed options.
Create a Custom MapCore details from the ONS Postcode Directory. Geography codes identify the official areas containing this postcode.
| Postcode | SW1Y 4AJ |
| Postcode without spaces | SW1Y4AJ |
| Status | Active postcode |
| User type | Small user postcode |
| Introduced | February 2017 |
| Directory version | 2026-06 |
| Latitude | 51.5099500 |
| Longitude | -0.1309520 |
| British National Grid | 529,801 E, 180,658 N |
| Country | England |
| Region | London |
| Local authority | Westminster |
| Output Area (2021) | E00023929 |
| LSOA (2021) | E01004734 |
| MSOA (2021) | E02000977 |
| Electoral ward | E05013806 |
| Westminster constituency | E14001172 |
The postcode is assigned to these official political geographies. Names and election results will be added when the ElectionMaps datasets are connected.
A detailed vector map covering a 500 metre radius around the postcode.
Deprivation is published for the postcode's containing Lower Layer Super Output Area, a neighbourhood geography covering more than one postcode.
Companies House records whose registered-office address uses this exact postcode.
Private Limited Company
Incorporated 22 September 2025
62020 - Information technology consultancy activities
Private Limited Company
Incorporated 11 December 2024
64209 - Activities of other holding companies n.e.c.
Private Limited Company
Incorporated 25 March 2024
58290 - Other software publishing
Private Limited Company
Incorporated 22 December 2023
64209 - Activities of other holding companies n.e.c.
Private Limited Company
Incorporated 30 October 2023
52220 - Service activities incidental to water transportation
Private Limited Company
Incorporated 16 May 2023
52220 - Service activities incidental to water transportation
Private Limited Company
Incorporated 16 May 2023
52220 - Service activities incidental to water transportation
Private Limited Company
Incorporated 15 May 2023
74909 - Other professional, scientific and technical activities n.e.c.
Private Limited Company
Incorporated 10 May 2023
52220 - Service activities incidental to water transportation
Private Limited Company
Incorporated 10 May 2023
52220 - Service activities incidental to water transportation
Private Limited Company
Incorporated 2 March 2023
52220 - Service activities incidental to water transportation
Private Limited Company
Incorporated 27 February 2023
52220 - Service activities incidental to water transportation
Police.uk street-level incidents recorded across the postcode's containing LSOA in May 2026.
Westminster 018A includes SW1Y 4AJ and other nearby postcodes.
| Crime type | Incidents |
|---|---|
| Other theft | 132 |
| Violence and sexual offences | 132 |
| Theft from the person | 97 |
| Anti-social behaviour | 51 |
| Public order | 45 |
| Drugs | 37 |
| Shoplifting | 30 |
| Robbery | 18 |
| Vehicle crime | 15 |
| Bicycle theft | 6 |
| Possession of weapons | 4 |
| Burglary | 3 |
| Other crime | 2 |
Answers use the geographic scope stated with each dataset above.
SW1Y 4AJ is in Westminster, England.
The deprivation figures describe the containing Lower Layer Super Output Area, not only the individual postcode.
Vector Maps supplies editable UK postcode area, district and sector map files. For a vector or printed map focused on the full SW1Y 4AJ postcode and its approximate address-derived outline, request a custom map.
Explore other full postcodes in the same postcode sector.