| Postcode | W1G 8QQ | 
|---|---|
| Post Town | London | 
| Nearest station | Regents Park (1 km) | 
| Bus stops | Henrietta Place (W) New Cavendish Street (W) Holles Street (N) Oxford Street  John Lewis (W) Oxford Circus Station  John Lewis (E) Margaret Street Oxford Circus (N) | 
| London travel zone | 1 | 
| Roads in this postcode | |
| Number of UPRNs | 8 View | 
| Known addresses | Flat 2, 51 Harley Street, London Flat 3, 51 Harley Street, London Flat 4, 51 Harley Street, London | 
| Main property type | Flat | 
| Businesses | 
| Latitude | 51.518777 | |
|---|---|---|
| Longitude | -0.147081 | |
| Easting | 528659 | |
| Northing | 181611 | |
| Grid reference | TQ286816 | |
| UTM reference | 30U 697929 5711376 | |
| what3words | punk.courier.remark | |
| FixPhrase | cringing magnesium setup vacant | |
| Plus code | 9C3XGV93+G5 | |
| Altitude | 34 metres (113 feet) | |
| Sunrise (today) | 6:53 | |
| Sunset (today) | 16:37 | |
| Distance away | ||
| Distance to sea | 39.3 KMs (24.4 miles) | 
| Parish | Westminster, unparished area | E43000236 | 
|---|---|---|
| Ward | Marylebone | E05013801 | 
| London Borough | Westminster | E09000033 | 
| County | Greater London | E11000009 | 
| Constituency (2024) | Cities of London and Westminster | E14001172 | 
| MP | Rachel Blake | Labour | 
| Police force | Metropolitan Police | |
| Water company | Thames Water | |
| NUTS/ITL 3 | Westminster and City of London | |
| NUTS/ITL 2 | Inner London - West | |
| NUTS/ITL 1 | London | |
| Country | England | E92000001 | 
| Date introduced | December 2000 | 
|---|---|
| Last updated | September 2025 | 
| User type | Small (addresses receive less than 25 items of mail per day) | 
| Quality | Within the building of the matched address closest to the postcode mean | 
| Population (2011) | 9 | |
|---|---|---|
| Households (2011) | 4 | |
| Index of Multiple Deprivation (2019) | Most deprivedLeast deprived | |
| Average household income (2020) | Lowest (£22,200)
                        Highest (£108,100)
                       | |
| Rural/urban (2021) | Urban: Nearer to a major town or city | |
| Rural/urban (2011) | Urban major conurbation | |
| Built up area (2024) | City of Westminster | E63012036 | 
| Census output area (2021) | E00023842 | |
| Census output area (2011) | 2D3 | |
| Lower layer super output area (2021) | Westminster 011A | E01004713 | 
| Lower layer super output area (2011) | Westminster 011A | E01004713 | 
| Middle layer super output area (2021) | Marylebone & Park Lane | E02000970 | 
| Middle layer super output area (2011) | Marylebone & Park Lane | E02000970 | 
| Travel to work area | London | E30000234 | 
| Average property price in West London | £788,410 | 
|---|---|
| Annual change | -7.8% | 
| Address | Type | Date | Price | 
|---|---|---|---|
| Flat 3, 51 Harley Street, London | Flat (leasehold) | Nov 2012 | £951,000 | 
| Flat (leasehold) | Feb 2011 | £580,000 | |
| Flat (leasehold) | Aug 1999 | £257,000 | |
| Flat (leasehold) | Mar 1997 | £195,000 | |
| Flat 4, 51 Harley Street, London | Flat (leasehold) | Oct 2010 | £885,000 | 
| Flat 2, 51 Harley Street, London | Flat (leasehold) | Jul 2005 | £610,000 |