SL4 4UP maps, stats, and open data
SL4 4UP lies on Illingworth in Windsor. SL4 4UP is located in the Clewer & Dedworth East 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 4UP maps
Source: OS VectorMap District (Ordnance Survey)
Licence: Open Government Licence (requires attribution)
SL4 4UP geodata
| Easting | 494350 |
| Northing | 175594 |
| Latitude | 51.471456 |
| Longitude | -0.642974 |
Where is SL4 4UP?
| Street | Illingworth |
| Town/City | Windsor |
| Country | England |
| Postcode District | SL4 |
SL4 4UP Elevation
Elevation or altitude of SL4 4UP 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 East |
|---|---|
| Constituency | Windsor |
House Prices
Sales of detached houses in SL4 4UP
2025 18 AUG £1,200,000 |
2023 30 JUN £1,090,000 |
2023 21 APR £1,100,000 |
16, ILLINGWORTH, WINDSOR, SL4 4UP 2022 5 DEC £1,060,000 |
2021 15 JUL £1,130,000 |
40, ILLINGWORTH, WINDSOR, SL4 4UP 2021 21 MAY £900,000 |
2021 12 MAR £950,000 |
2021 22 JAN £925,000 |
2020 12 NOV £1,220,000 |
2019 2 AUG £980,000 |
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 4UP
| Camm Avenue (Foster Avenue) | Clewer | 342m |
| Camm Avenue (Foster Avenue) | Clewer | 352m |
| Piner Cottages (Foster Avenue) | Clewer | 356m |
| Poolmans Road (Wolf Lane) | Dedworth | 368m |
| Poolmans Road (Wolf Lane) | Dedworth | 391m |
Nearest railway stations to SL4 4UP
| Windsor & Eton Central Station | 2.6km |
| Windsor & Eton Riverside Station | 3km |
| Datchet Station | 4.6km |
Broadband
Broadband access in SL4 4UP (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 | 0.0% |
| Percentage of properties with Full Fibre Broadband | 0.0% |
Superfast Broadband is between 30Mbps and 300Mbps
Ultrafast Broadband is > 300Mbps
Broadband speed in SL4 4UP (2019 data)
Download
| Median download speed | 39.1Mbps |
| Average download speed | 38.0Mbps |
| Maximum download speed | 80.00Mbps |
Upload
| Median upload speed | 6.2Mbps |
| Average upload speed | 8.0Mbps |
| Maximum upload speed | 20.00Mbps |
Broadband limitations in SL4 4UP (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 4UP gas and electricity consumption
Estimated total energy consumption in SL4 4UP by fuel type, 2015.
Gas
| Consumption (kWh) | 1,909,666 |
|---|---|
| Meter count | 77 |
| Mean (kWh/meter) | 24,801 |
| Median (kWh/meter) | 23,660 |
Electricity
| Consumption (kWh) | 433,616 |
|---|---|
| Meter count | 74 |
| Mean (kWh/meter) | 5,860 |
| Median (kWh/meter) | 4,710 |
- Consumption: The estimated total energy consumption, in kWh, across all meters in SL4 4UP, for 2015.
- Meter count: The total number of meters in SL4 4UP.
- 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 4UP:Food Standards Agency
Three nearest food hygiene ratings to SL4 4UP (metres)
➜ Get more ratings from the Food Standards Agency
Nearest post box to SL4 4UP
| Last Collection | |||
|---|---|---|---|
| Location | Mon-Fri | Sat | Distance |
| Clewer Hill Road | 17:30 | 11:45 | 920m |
| Hatch Lane | 17:30 | 11:45 | 936m |
| Cavalry Crescent | 16:45 | 11:30 | 1,402m |
SL4 4UP ITL and SL4 4UP 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 4UP:
| 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 4UP 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 4UP:
| Code | Name | |
|---|---|---|
| OA | E00083790 | |
| LSOA | E01016597 | Windsor and Maidenhead 015D |
| MSOA | E02003435 | Windsor and Maidenhead 015 |
Nearest postcodes to SL4 4UP
| SL4 4HD | Perrycroft | 97m |
| SL4 4HE | Perrycroft | 127m |
| SL4 4UN | Turnoak Park | 135m |
| SL4 4HB | Perrycroft | 181m |
| SL4 4NR | Washington Drive | 195m |
| SL4 4NW | Camm Avenue | 211m |
| SL4 4NS | Washington Drive | 225m |
| SL4 4NL | Keeler Close | 225m |
| SL4 4HF | Rydings | 234m |
| SL4 4AL | St Leonards Hill | 237m |
- 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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