SL4 4BL maps, stats, and open data
SL4 4BL lies on Firs Avenue in Windsor. SL4 4BL is located in the Clewer 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 4BL geodata
| Easting | 494956 |
| Northing | 175828 |
| Latitude | 51.473457 |
| Longitude | -0.634205 |
Where is SL4 4BL?
| Street | Firs Avenue |
| Town/City | Windsor |
| Country | England |
| Postcode District | SL4 |
SL4 4BL Elevation
Elevation or altitude of SL4 4BL as distance above sea level:
| Metres | Feet | |
|---|---|---|
| Elevation | 30m | 98ft |
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 East |
|---|---|
| Constituency | Windsor |
House Prices
Sales of detached houses in SL4 4BL
2013 11 JAN £348,000 |
7, FIRS AVENUE, WINDSOR, SL4 4BL 2005 14 DEC £275,000 |
6, FIRS AVENUE, WINDSOR, SL4 4BL 2002 6 DEC £225,000 |
6, FIRS AVENUE, WINDSOR, SL4 4BL 1999 16 SEP £160,000 |
12, FIRS AVENUE, WINDSOR, SL4 4BL 1997 30 JUL £122,000 |
1996 11 OCT £96,000 |
1995 28 APR £90,000 |
Licence: Contains HM Land Registry data © Crown copyright and database right 2025. This data is licensed under the Open Government Licence v3.0.
Transport
Nearest bus stops to SL4 4BL
| Hatch Lane (Clewer Hill Road) | Clewer | 102m |
| Hatch Lane (Clewer Hill Road) | Clewer | 110m |
| Manor Farm Close (Clewer Hill Road) | Clewer | 259m |
| Addington Close (Clewer Hill Road) | Clewer | 260m |
| Bell View | Clewer | 336m |
Nearest railway stations to SL4 4BL
| Windsor & Eton Central Station | 2km |
| Windsor & Eton Riverside Station | 2.4km |
| Datchet Station | 4km |
Broadband
Broadband access in SL4 4BL (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 | 94.7% |
| Percentage of properties with Full Fibre Broadband | 0.0% |
Superfast Broadband is between 30Mbps and 300Mbps
Ultrafast Broadband is > 300Mbps
Broadband speed in SL4 4BL (2019 data)
Download
| Median download speed | 47.3Mbps |
| Average download speed | 87.0Mbps |
| Maximum download speed | 350.00Mbps |
Upload
| Median upload speed | 9.7Mbps |
| Average upload speed | 8.5Mbps |
| Maximum upload speed | 20.00Mbps |
Broadband limitations in SL4 4BL (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 4BL gas and electricity consumption
Estimated total energy consumption in SL4 4BL by fuel type, 2015.
Gas
| Consumption (kWh) | 241,052 |
|---|---|
| Meter count | 18 |
| Mean (kWh/meter) | 13,392 |
| Median (kWh/meter) | 12,358 |
Electricity
| Consumption (kWh) | -8,848 |
|---|---|
| Meter count | 19 |
| Mean (kWh/meter) | -466 |
| Median (kWh/meter) | 2,486 |
- Consumption: The estimated total energy consumption, in kWh, across all meters in SL4 4BL, for 2015.
- Meter count: The total number of meters in SL4 4BL.
- 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
2.1% of English postcodes are less deprived than SL4 4BL:Food Standards Agency
Three nearest food hygiene ratings to SL4 4BL (metres)
➜ Get more ratings from the Food Standards Agency
Nearest post box to SL4 4BL
| Last Collection | |||
|---|---|---|---|
| Location | Mon-Fri | Sat | Distance |
| Hatch Lane | 17:30 | 11:45 | 342m |
| Clewer Hill Road | 17:30 | 11:45 | 418m |
| Cavalry Crescent | 16:45 | 11:30 | 888m |
SL4 4BL ITL and SL4 4BL 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 4BL:
| 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 4BL 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 4BL:
| Code | Name | |
|---|---|---|
| OA | E00083562 | |
| LSOA | E01016548 | Windsor and Maidenhead 014A |
| MSOA | E02003434 | Windsor and Maidenhead 014 |
Nearest postcodes to SL4 4BL
| SL4 4EF | Cleves Court | 48m |
| SL4 3RL | Hatch Lane | 70m |
| SL4 4DA | Clewer Hill Road | 82m |
| SL4 4DB | Clewer Hill Road | 103m |
| SL4 3RW | Hatch Lane | 105m |
| SL4 3RQ | Nelson Road | 120m |
| SL4 4BY | Clewer Hill Road | 131m |
| SL4 3RJ | Hatch Lane | 141m |
| SL4 4RB | Mayfield Drive | 145m |
| SL4 3RG | Gordon Road | 177m |
- Contains OS data © Crown copyright and database right (2025)
- Contains Royal Mail data © Royal Mail copyright and Database right (2025)
- Contains National Statistics data © Crown copyright and database right (2025)
- Data produced by Land Registry © Crown copyright (2025)
- Contains Environment Agency data licensed under the Open Government Licence v3.0
- Everything else © GetTheData Publishing Limited (2025)
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