SL6 4DS maps, stats, and open data
SL6 4DS lies on Underhill Close in Maidenhead. SL6 4DS is located in the Boyn Hill electoral ward, within the unitary authority of Windsor and Maidenhead and the English Parliamentary constituency of Maidenhead. 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 June 1981.
SL6 4DS maps
Source: OS VectorMap District (Ordnance Survey)
Licence: Open Government Licence (requires attribution)
SL6 4DS geodata
| Easting | 488105 |
| Northing | 180905 |
| Latitude | 51.520202 |
| Longitude | -0.731554 |
Where is SL6 4DS?
| Street | Underhill Close |
| Town/City | Maidenhead |
| Country | England |
| Postcode District | SL6 |
SL6 4DS Elevation
Elevation or altitude of SL6 4DS as distance above sea level:
| Metres | Feet | |
|---|---|---|
| Elevation | 40m | 131ft |
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 | Boyn Hill |
|---|---|
| Constituency | Maidenhead |
House Prices
Sales of detached houses in SL6 4DS
2025 6 FEB £600,000 |
2021 28 JUN £870,000 |
3, UNDERHILL CLOSE, MAIDENHEAD, SL6 4DS 2021 12 FEB £735,000 |
2018 22 JUN £860,000 |
2014 28 NOV £635,000 |
2013 3 MAY £595,000 |
2012 9 MAR £599,950 |
2004 12 JAN £485,000 |
1, UNDERHILL CLOSE, MAIDENHEAD, SL6 4DS 2002 14 JUN £355,000 |
2000 28 JAN £315,000 |
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 SL6 4DS
| Boyn Hill Avenue | Maidenhead | 89m |
| Boyn Hill Avenue | Maidenhead | 92m |
| Kings Grove | Maidenhead | 130m |
| Kings Grove | Maidenhead | 130m |
| Castle Hill (Bath Road) | Maidenhead | 260m |
Nearest railway stations to SL6 4DS
| Maidenhead Station | 0.6km |
| Furze Platt Station | 1.4km |
| Taplow Station | 3.5km |
Broadband
Broadband access in SL6 4DS (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 | 54.5% |
| Percentage of properties with Full Fibre Broadband | 0.0% |
Superfast Broadband is between 30Mbps and 300Mbps
Ultrafast Broadband is > 300Mbps
Broadband speed in SL6 4DS (2019 data)
Download
| Median download speed | 55.0Mbps |
| Average download speed | 73.6Mbps |
| Maximum download speed | 296.97Mbps |
Upload
| Median upload speed | 19.5Mbps |
| Average upload speed | 16.0Mbps |
| Maximum upload speed | 44.54Mbps |
Broadband limitations in SL6 4DS (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% |
SL6 4DS gas and electricity consumption
Estimated total energy consumption in SL6 4DS by fuel type, 2015.
Gas
| Consumption (kWh) | 222,416 |
|---|---|
| Meter count | 11 |
| Mean (kWh/meter) | 20,220 |
| Median (kWh/meter) | 19,951 |
Electricity
| Consumption (kWh) | 112,470 |
|---|---|
| Meter count | 11 |
| Mean (kWh/meter) | 10,225 |
| Median (kWh/meter) | 5,554 |
- Consumption: The estimated total energy consumption, in kWh, across all meters in SL6 4DS, for 2015.
- Meter count: The total number of meters in SL6 4DS.
- 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
27.1% of English postcodes are less deprived than SL6 4DS:Food Standards Agency
Three nearest food hygiene ratings to SL6 4DS (metres)
➜ Get more ratings from the Food Standards Agency
Nearest post box to SL6 4DS
| Last Collection | |||
|---|---|---|---|
| Location | Mon-Fri | Sat | Distance |
| Grenfell Road | 17:30 | 11:30 | 266m |
| Castle Hill | 17:30 | 12:00 | 273m |
| High Town Road | 16:30 | 11:30 | 276m |
SL6 4DS ITL and SL6 4DS 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 SL6 4DS:
| 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 |
SL6 4DS 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 SL6 4DS:
| Code | Name | |
|---|---|---|
| OA | E00083492 | |
| LSOA | E01016537 | Windsor and Maidenhead 007B |
| MSOA | E02003427 | Windsor and Maidenhead 007 |
Nearest postcodes to SL6 4DS
| SL6 4ET | Boyn Hill Avenue | 58m |
| SL6 4DD | Lower Boyndon Road | 83m |
| SL6 4DB | Laburnham Road | 87m |
| SL6 4ER | Boyn Hill Avenue | 120m |
| SL6 1EZ | Grenfell Road | 126m |
| SL6 1HA | Grenfell Road | 147m |
| SL6 4DG | Clare Road | 151m |
| SL6 4DF | Lower Boyndon Road | 162m |
| SL6 1YQ | Monycrower Drive | 164m |
| SL6 4DA | Kings Grove | 172m |
- 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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