SL4 postcode

Broadband in SL4 2LY

Old Windsor, Windsor and Maidenhead

Gigabit broadband is available at this postcode.

Best speedGigabit (1Gbps+)
StandardSuperfastGigabit
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Free, independent comparison · Ofcom verified data · Updated 16 March 2026

Flood Risk

High

Fibre (FTTP)

No

Best speed

Gigabit (1Gbps+)

Reviewed by Rex BlackwellData last verified: 16 March 2026

Speed Calculator

Adjust the options below to see how much broadband speed your household needs.

2
18

HD uses ~5 Mbps per person. 4K uses ~25 Mbps.

Each person on calls needs around 10 Mbps.

Competitive gaming needs low latency as much as raw speed.

Cameras, thermostats, speakers and similar devices each use a few Mbps.

Estimated speed needed14 Mbps

Gigabit broadband (Gigabit (1Gbps+)) is available at SL4 2LY. That covers your 14 Mbps needs with room to spare.

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Speed Test

Check your current download speed and see how it compares to what is available at SL4 2LY.

The test downloads a 2 MB file from our server and measures how long it takes.

This test measures download speed only. Results vary depending on network conditions.

Broadband availability

Source: Ofcom Connected Nations 2025 (Jul 2025)

TechnologyAvailableCoverageTypical Speed
Standard (ADSL)100%
100%
10-20 Mbps
Superfast (30+ Mbps)100%
100%
30-80 Mbps
Ultrafast (100+ Mbps)100%
100%
100-300 Mbps
Full Fibre (FTTP)0%
0%
300-900 Mbps
Gigabit100%
100%
900-1,000 Mbps

Speed Distribution at SL4 2LY

100%
300+ Mbps (100%)

Source: Ofcom Connected Nations 2025

Mobile coverage

4G & 5G coverage · Ofcom Connected Nations 2025

4G Outdoor

95%

4G Indoor

85%

5G Outdoor

%

Networks with 4G

EEO2ThreeVodafone
Ofcom Connected Nations 2025

Schools nearby

Nearest schools within 5 miles · Ofsted ratings as at Jan 2026

Schools data is currently unavailable.

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Flood risk

🔴

Flood risk: High

This postcode is in undefined — high risk of flooding from rivers and sea.

Flood Zone

Risk Level

High

Environment Agency

Air quality

Particulate matter & nitrogen dioxide levels

air quality

Air quality data not available.

PM2.5 (fine particles) μg/m³

WHO guideline: 15 μg/m³

PM10 (coarse particles) μg/m³

WHO guideline: 45 μg/m³

NO₂ (nitrogen dioxide) μg/m³

WHO guideline: 25 μg/m³

DEFRA UK-AIR · Guidelines: WHO 2021

Transport links

Nearest train stations and towns

Nearest train stations

No train stations found within 15 miles

Network Rail / National Rail · Straight-line distances

Council tax bands

Band distribution for Windsor and Maidenhead

Most common: Band

A
5%£1,381
B
10%£1,611
C
20%£1,841
D
25%£2,071
E
20%£2,531
F
10%£2,991
G
8%£3,452
H
2%£4,142

Annual council tax estimates for , 2024/25

VOA (Valuation Office Agency)

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Living near SL4 2LY

Looking at SL4 2LY in Old Windsor? Here is what the data says. From broadband coverage to crime rates, this is the full picture. All numbers are from official sources. The guide is updated as new data becomes available.

Superfast coverage here stands at 100%. Nationally, 93% of UK premises have access. Coverage at this postcode is strong. Ultrafast broadband (100 Mbps+) reaches 100% of properties. That is solid coverage for bandwidth-heavy households. Gigabit-capable connections cover 100% of premises. Most homes can access gigabit speeds if they choose to.

Here is how broadband speeds break down across premises at SL4 2LY. 100% of connections fall in the 300 Mbps or faster range. No premises here are stuck below 5 Mbps. Every property meets the basic threshold for video calls. Over half of connections exceed 300 Mbps. That supports multiple 4K streams, large file transfers, and cloud gaming without issue.

Translating the numbers at SL4 2LY into daily use gives a clearer picture. Most premises have superfast speeds. Remote working with video calls and cloud tools should be manageable for most households.

FWA broadband has not reached SL4 2LY yet. Satellite services like Starlink or 4G home broadband routers can fill the gap where fixed-line options are limited.

0% of premises at SL4 2LY fall below the Universal Service Obligation of 10 Mbps. Every property here meets the minimum standard. That is not the case everywhere. Next-generation access (NGA) reaches 100% of the area. NGA typically means speeds of 24 Mbps or above.

Flood risk at SL4 2LY is rated High. Check Environment Agency flood maps for detailed information. Specialist flood insurance may be needed.

The three most common bands are D (25%), C (20%), E (20%). Band D corresponds to 1991 property values of £68,001 to £88,000. Current values are typically much higher. The spread across mid-range bands suggests a varied housing stock.

Outdoor 4G mobile signal at SL4 2LY is available across 95% of the area. Indoor 4G drops to 85%. Some signal loss indoors is normal. Most calls and data should still work inside. Coverage data covers EE, O2, Three, Vodafone. Check each operator individually, as coverage varies by network.

Suitability scores for SL4 2LY: remote working 55/100, family 50/100, value 50/100. Remote workers may want to verify actual speeds before committing.

The local authority for SL4 2LY is Windsor and Maidenhead. The immediate area is Old Windsor, a distinct community within the wider district. The SL4 postcode area contains 1282 postcodes on this site. Superfast broadband across SL4 ranges from 0% to 100%. SL4 2LY is above the area average of 93%.

How does SL4 2LY compare to its neighbours? SL4 2LS (0.05 miles, old-windsor) has 100% superfast coverage and 100% gigabit. SL4 2LX (0.06 miles, old-windsor) has 100% superfast coverage and 100% gigabit. Coverage is broadly similar across these neighbouring postcodes.

When choosing a broadband provider at SL4 2LY, check what technology reaches your specific address. Availability varies by street and sometimes by building. If fibre is unavailable, consider 4G home broadband or satellite as alternatives. Speeds may still be adequate for most uses. Compare contract lengths, total costs over the term, and exit fees. The cheapest monthly rate is not always the best deal.

Old Windsor offers a mix of residential properties and local amenities. The character of any area is best judged in person.

Looking at the overall picture for SL4 2LY, a few things are worth highlighting. Connectivity at SL4 2LY is a strength. Strong broadband coverage gives flexibility for both working and leisure. The area scores well on that front. Windsor and Maidenhead as a local authority area has its own planning priorities, council services, and infrastructure investment plans. Check the council website for the latest. The data covers what can be measured. Old Windsor has its own character that numbers alone cannot capture. Use these figures as a filter, then visit to get the full picture.

Data sources include Ofcom (broadband and mobile), Land Registry (house prices), Police.uk (crime), Ofsted (schools), Environment Agency (flood risk), and Open-Meteo (air quality). Council tax data comes from the Valuation Office Agency. EPC data is from DLUHC. Transport data uses NaPTAN. Speed distribution figures are from Ofcom Connected Nations. All figures are the latest available at the time of writing.

Numbers tell part of the story for SL4 2LY. Visit at different times of day. Talk to neighbours. Check mobile signal indoors. Walk the route to the nearest school or station. Test the broadband speed from inside the property. These things do not show up in data.

This covers the key data for SL4 2LY. Broadband, property, schools, safety, and local services all in one place. For area-wide trends, see the Old Windsor hub page. Bookmark this page and check back as new data arrives.

More local data is being added for this postcode

This page already has postcode-specific content, and more data-backed sections will appear as the remaining local datasets finish processing.

Frequently asked questions about SL4 2LY

What are the broadband speeds available at SL4 2LY?

Superfast broadband (30 Mbps+) is available to 100% of premises at SL4 2LY. Ultrafast coverage is at 100%.

What is the average house price near SL4 2LY?

No recent house price data is available for SL4 2LY.

What is the flood risk for properties at SL4 2LY?

SL4 2LY has a High flood risk rating. Check Environment Agency maps for detail.

What schools are nearby in the SL4 2LY area?

School data for SL4 2LY is being updated. Check the Get Information About Schools service for the latest.

How does crime rate in SL4 2LY compare to other areas?

Crime data for this area is being updated.

How suitable is SL4 2LY for remote working?

SL4 2LY scores 55/100 for remote working suitability. Speeds may limit video-heavy workflows.

What is the mobile signal like at SL4 2LY?

4G outdoor coverage at SL4 2LY is 95%. Indoor coverage may be lower.

What is the most common energy efficiency rating near SL4 2LY?

EPC data for SL4 2LY is being updated. Check the EPC register for individual property ratings.

What is the council tax band distribution at SL4 2LY?

Council tax band information for SL4 2LY is being updated.

How accessible are GP surgeries near SL4 2LY?

GP surgery data for SL4 2LY is being updated. Check NHS.uk for the latest.

What transport links are available near SL4 2LY?

Transport data for SL4 2LY is being updated.

Is SL4 2LY a suitable area for families?

SL4 2LY scores 50/100 for family suitability. Check school and crime sections above for detail.

What is the air quality like at SL4 2LY?

Air quality data for SL4 2LY is being updated.

How far is the nearest EV charging point from SL4 2LY?

EV charging data for SL4 2LY is being updated. Check Zap-Map for the latest.

Can I get full fibre broadband at SL4 2LY?

Ultrafast broadband (100 Mbps+) reaches 100% of premises. Check Openreach and local operators for FTTP availability.

Area suitability scores

SL4 2LY

Remote Worker

55

Based on superfast broadband coverage, FTTP %, and 4G mobile outdoor coverage.

Family

50

Based on Ofsted school ratings, crime rate, flood risk, and GP surgery proximity.

Value for Money

50

Based on broadband quality relative to average house price in the area.

Map

Area info

Parish

Old Windsor

District

Windsor and Maidenhead

Region

Constituency

LSOA

E01016589

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