Use this guide to understand SW1Y 4HH 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. Census 2021 records 15 residents and 11 households at the exact postcode.
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Create a Custom MapCore details from the ONS Postcode Directory. Geography codes identify the official areas containing this postcode.
| Postcode | SW1Y 4HH |
| Postcode without spaces | SW1Y4HH |
| Status | Active postcode |
| User type | Small user postcode |
| Introduced | January 1980 |
| Directory version | 2026-06 |
| Latitude | 51.5089000 |
| Longitude | -0.1305770 |
| British National Grid | 529,830 E, 180,542 N |
| Country | England |
| Region | London |
| Local authority | Westminster |
| Output Area (2021) | E00023935 |
| LSOA (2021) | E01004736 |
| 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.
These Census figures are matched directly to the full postcode, rather than inferred from a wider neighbourhood.
| Residents | 15 |
| Households | 11 |
| Female residents | 6 |
| Male residents | 9 |
| Residents per household | 1.4 |
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 2 June 2026
62012 - Business and domestic software development
Private Limited Company
Incorporated 26 May 2026
62012 - Business and domestic software development
Private Limited Company
Incorporated 20 May 2026
64209 - Activities of other holding companies n.e.c.
Private Limited Company
Incorporated 20 May 2026
64209 - Activities of other holding companies n.e.c.
Private Limited Company
Incorporated 20 May 2026
62020 - Information technology consultancy activities
Private Limited Company
Incorporated 29 April 2026
64209 - Activities of other holding companies n.e.c.
Private Limited Company
Incorporated 29 November 2024
64209 - Activities of other holding companies n.e.c.
Private Limited Company
Incorporated 10 April 2023
64209 - Activities of other holding companies n.e.c.
Private Limited Company
Incorporated 31 March 2023
64209 - Activities of other holding companies n.e.c.
Public Limited Company
Incorporated 10 February 2023
64209 - Activities of other holding companies n.e.c.
Private Limited Company
Incorporated 23 December 2021
93199 - Other sports activities
Private Limited Company
Incorporated 24 June 2021
64209 - Activities of other holding companies n.e.c.
Police.uk street-level incidents recorded across the postcode's containing LSOA in May 2026.
Westminster 018C includes SW1Y 4HH and other nearby postcodes.
| Crime type | Incidents |
|---|---|
| Other theft | 104 |
| Theft from the person | 95 |
| Violence and sexual offences | 79 |
| Anti-social behaviour | 65 |
| Public order | 35 |
| Shoplifting | 20 |
| Drugs | 14 |
| Robbery | 12 |
| Vehicle crime | 11 |
| Possession of weapons | 8 |
| Bicycle theft | 5 |
| Burglary | 2 |
| Other crime | 2 |
Answers use the geographic scope stated with each dataset above.
SW1Y 4HH is in Westminster, England.
The Census 2021 postcode-level dataset records 15 residents at SW1Y 4HH. This is an exact postcode count.
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 4HH postcode and its approximate address-derived outline, request a custom map.
Explore other full postcodes in the same postcode sector.