SL4 4NS maps, stats, and open data
SL4 4NS lies on Washington Drive in Windsor. SL4 4NS is located in the Clewer & Dedworth West electoral ward, within the unitary authority of Windsor and Maidenhead and the English Parliamentary constituency of Windsor. The Sub Integrated Care Board (ICB) Location is NHS Frimley ICB - D4U1Y and the police force is Thames Valley. This postcode has been in use since January 1980.
SL4 4NS maps
Source: OS VectorMap District (Ordnance Survey)
Licence: Open Government Licence (requires attribution)
SL4 4NS geodata
| Easting | 494147 |
| Northing | 175692 |
| Latitude | 51.472370 |
| Longitude | -0.645886 |
Where is SL4 4NS?
| Street | Washington Drive |
| Town/City | Windsor |
| Country | England |
| Postcode District | SL4 |
SL4 4NS Elevation
Elevation or altitude of SL4 4NS as distance above sea level:
| Metres | Feet | |
|---|---|---|
| Elevation | 50m | 164ft |
Elevation is measured from the approximate centre of the postcode, to the nearest point on an OS contour line from OS Terrain 50, which has contour spacing of ten vertical metres.
➜ How high above sea level am I? Find the elevation of your current position using your device's GPS.
Politics
| Ward | Clewer & Dedworth West |
|---|---|
| Constituency | Windsor |
House Prices
Sales of detached houses in SL4 4NS
44, WASHINGTON DRIVE, WINDSOR, SL4 4NS 2026 26 JAN £550,000 |
2025 28 MAR £625,000 |
14, WASHINGTON DRIVE, WINDSOR, SL4 4NS 2024 5 JUL £520,000 |
20, WASHINGTON DRIVE, WINDSOR, SL4 4NS 2024 3 JUL £612,500 |
28, WASHINGTON DRIVE, WINDSOR, SL4 4NS 2022 6 SEP £575,000 |
2018 5 JAN £565,000 |
2015 29 MAY £475,000 |
2014 26 SEP £476,000 |
2013 7 OCT £386,600 |
2013 18 JUN £430,000 |
Licence: Contains HM Land Registry data © Crown copyright and database right 2026. This data is licensed under the Open Government Licence v3.0.
Transport
Nearest bus stops to SL4 4NS
| Poolmans Road (Wolf Lane) | Dedworth | 143m |
| Poolmans Road (Wolf Lane) | Dedworth | 167m |
| Piner Cottages (Foster Avenue) | Clewer | 188m |
| Camm Avenue (Foster Avenue) | Clewer | 229m |
| Camm Avenue (Foster Avenue) | Clewer | 230m |
Nearest railway stations to SL4 4NS
| Windsor & Eton Central Station | 2.7km |
| Windsor & Eton Riverside Station | 3.1km |
| Datchet Station | 4.8km |
Broadband
Broadband access in SL4 4NS (2020 data)
| Percentage of properties with Next Generation Access | 100.0% |
| Percentage of properties with Superfast Broadband | 100.0% |
| Percentage of properties with Ultrafast Broadband | 84.8% |
| Percentage of properties with Full Fibre Broadband | 0.0% |
Superfast Broadband is between 30Mbps and 300Mbps
Ultrafast Broadband is > 300Mbps
Broadband speed in SL4 4NS (2019 data)
Download
| Median download speed | 27.4Mbps |
| Average download speed | 53.8Mbps |
| Maximum download speed | 200.00Mbps |
Upload
| Median upload speed | 2.5Mbps |
| Average upload speed | 3.1Mbps |
| Maximum upload speed | 6.88Mbps |
Broadband limitations in SL4 4NS (2020 data)
| Percentage of properties unable to receive 2Mbps | 0.0% |
| Percentage of properties unable to receive 5Mbps | 0.0% |
| Percentage of properties unable to receive 10Mbps | 0.0% |
| Percentage of properties unable to receive 30Mbps | 0.0% |
SL4 4NS gas and electricity consumption
Estimated total energy consumption in SL4 4NS by fuel type, 2015.
Gas
| Consumption (kWh) | 538,063 |
|---|---|
| Meter count | 33 |
| Mean (kWh/meter) | 16,305 |
| Median (kWh/meter) | 16,088 |
Electricity
| Consumption (kWh) | 138,023 |
|---|---|
| Meter count | 31 |
| Mean (kWh/meter) | 4,452 |
| Median (kWh/meter) | 4,099 |
- Consumption: The estimated total energy consumption, in kWh, across all meters in SL4 4NS, for 2015.
- Meter count: The total number of meters in SL4 4NS.
- Mean: The mean average consumption per meter, in kWh.
- Median: The median average consumption per meter, in kWh.
Source: Postcode level electricity estimates: 2015 (experimental)
Licence: Open Government Licence
Deprivation
5.5% of English postcodes are less deprived than SL4 4NS:Food Standards Agency
Three nearest food hygiene ratings to SL4 4NS (metres)
➜ Get more ratings from the Food Standards Agency
Nearest post box to SL4 4NS
| Last Collection | |||
|---|---|---|---|
| Location | Mon-Fri | Sat | Distance |
| Hatch Lane | 17:30 | 11:45 | 1,065m |
| Clewer Hill Road | 17:30 | 11:45 | 1,131m |
| Cavalry Crescent | 16:45 | 11:30 | 1,618m |
SL4 4NS ITL and SL4 4NS LAU
The below table lists the International Territorial Level (ITL) codes (formerly Nomenclature of Territorial Units for Statistics (NUTS) codes) and Local Administrative Units (LAU) codes for SL4 4NS:
| ITL 1 Code | Name |
|---|---|
| TLJ | South East (England) |
| ITL 2 Code | Name |
| TLJ1 | Berkshire, Buckinghamshire and Oxfordshire |
| ITL 3 Code | Name |
| TLJ11 | Berkshire |
| LAU 1 Code | Name |
| E06000040 | Windsor and Maidenhead |
SL4 4NS census areas
The below table lists the Census Output Area (OA), Lower Layer Super Output Area (LSOA), and Middle Layer Super Output Area (MSOA) for SL4 4NS:
| Code | Name | |
|---|---|---|
| OA | E00083789 | |
| LSOA | E01016597 | Windsor and Maidenhead 015D |
| MSOA | E02003435 | Windsor and Maidenhead 015 |
Nearest postcodes to SL4 4NS
| SL4 4NR | Washington Drive | 54m |
| SL4 4NP | Luff Close | 95m |
| SL4 4NW | Camm Avenue | 129m |
| SL4 4AL | St Leonards Hill | 147m |
| SL4 4NZ | Poolmans Road | 175m |
| SL4 4NH | Foster Avenue | 180m |
| SL4 4JB | Wolf Lane | 197m |
| SL4 4NL | Keeler Close | 203m |
| SL4 4NN | Camm Avenue | 206m |
| SL4 4UP | Illingworth | 225m |
- Contains OS data © Crown copyright and database right (2026)
- Contains Royal Mail data © Royal Mail copyright and Database right (2026)
- Contains National Statistics data © Crown copyright and database right (2026)
- Data produced by Land Registry © Crown copyright (2026)
- Contains Environment Agency data licensed under the Open Government Licence v3.0
- Everything else © GetTheData Publishing Limited (2026)
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