Explore SW1Y 4LB in Westminster through its map and available local datasets. The outline is an approximate boundary derived from address locations, while the information below distinguishes full-postcode records from statistics covering surrounding official areas. Census 2021 records 9 residents and 2 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 4LB |
| Postcode without spaces | SW1Y4LB |
| Status | Active postcode |
| User type | Small user postcode |
| Introduced | January 1983 |
| Directory version | 2026-06 |
| Latitude | 51.5075100 |
| Longitude | -0.1365710 |
| British National Grid | 529,418 E, 180,377 N |
| Country | England |
| Region | London |
| Local authority | Westminster |
| Output Area (2021) | E00023937 |
| 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 | 9 |
| Households | 2 |
| Female residents | 5 |
| Male residents | 4 |
| Residents per household | 4.5 |
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.
Land Registry Price Paid Data transactions matched to this exact full postcode.
| Sale date | Address | Property type | Tenure | Price |
|---|---|---|---|---|
| 19 Dec 2024 | 11, ST JAMES'S SQUARE, LONDON | Other | Freehold | £162,000,000 |
| 10 Jan 2024 | FLAT 10, 18, ST JAMES'S SQUARE, LONDON | Flat or maisonette | Leasehold | £6,800,000 |
Companies House records whose registered-office address uses this exact postcode.
Limited Partnership
Incorporated 30 May 2019
None Supplied
Limited Partnership
Incorporated 30 May 2019
None Supplied
Limited Partnership
Incorporated 29 March 2019
None Supplied
Private Limited Company
Incorporated 29 January 2015
86230 - Dental practice activities
Private Limited Company
Incorporated 17 July 2014
82990 - Other business support service activities n.e.c.
Private Limited Company
Incorporated 14 August 2013
74909 - Other professional, scientific and technical activities n.e.c.
Private Limited Company
Incorporated 19 October 2011
64999 - Financial intermediation not elsewhere classified
Limited Partnership
Incorporated 20 January 2011
None Supplied
Limited Partnership
Incorporated 18 March 2008
None Supplied
Limited Partnership
Incorporated 27 July 2007
None Supplied
Limited Partnership
Incorporated 27 July 2007
None Supplied
Limited Partnership
Incorporated 20 July 2007
None Supplied
Police.uk street-level incidents recorded across the postcode's containing LSOA in May 2026.
Westminster 018C includes SW1Y 4LB 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 4LB is in Westminster, England.
The Census 2021 postcode-level dataset records 9 residents at SW1Y 4LB. This is an exact postcode count.
The deprivation figures describe the containing Lower Layer Super Output Area, not only the individual postcode.
Yes. The sold-price records shown on this page are Land Registry transactions matched to the full SW1Y 4LB postcode.
Vector Maps supplies editable UK postcode area, district and sector map files. For a vector or printed map focused on the full SW1Y 4LB postcode and its approximate address-derived outline, request a custom map.
Explore other full postcodes in the same postcode sector.