SG12 postcode
Broadband in SG12 9SR
Great Amwell, East Hertfordshire
Superfast broadband covers 60% of premises here.
Free, independent comparison · Ofcom verified data · Updated 25 March 2026
Flood Risk
High
Fibre (FTTP)
No
Best speed
~30 Mbps
Speed Calculator
Adjust the options below to see how much broadband speed your household needs.
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.
The best available speed at SG12 9SR is ~30 Mbps. That covers your 14 Mbps estimate.
Speed Test
Check your current download speed and see how it compares to what is available at SG12 9SR.
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)
| Technology | Available | Coverage | Typical Speed |
|---|---|---|---|
| Standard (ADSL) | 60% | 60% | 10-20 Mbps |
| Superfast (30+ Mbps) | 60% | 60% | 30-80 Mbps |
| Ultrafast (100+ Mbps) | 0% | 0% | 100-300 Mbps |
| Full Fibre (FTTP) | N/A | N/A | 300-900 Mbps |
| Gigabit | 0% | 0% | 900-1,000 Mbps |
Speed Distribution at SG12 9SR
Source: Ofcom Connected Nations 2025
Mobile coverage
4G & 5G coverage · Ofcom Connected Nations 2025
4G Outdoor
4G Indoor
5G Outdoor
Networks with 4G
Schools nearby
Nearest schools within 5 miles · Ofsted ratings as at Jan 2026
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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
Air quality
Particulate matter & nitrogen dioxide levels
air quality
Air quality data not available.
WHO guideline: 15 μg/m³
WHO guideline: 45 μg/m³
WHO guideline: 25 μg/m³
Transport links
Nearest train stations and towns
Nearest train stations
No train stations found within 15 miles
Council tax bands
Band distribution for East Hertfordshire
Most common: Band
Annual council tax estimates for , 2024/25
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Check Deals →Living near SG12 9SR
Great Amwell is home to SG12 9SR. Whether you live here or plan to move, the data below paints a clear picture. Broadband, schools, crime, house prices, and local services all follow. The numbers speak for themselves.
Superfast coverage here stands at 60%. Nationally, 93% of UK premises have access. Some properties may struggle with speed.
The speed distribution at SG12 9SR tells a more detailed story than headline figures alone. 40% of connections fall in the 10 to 30 Mbps range. 60% of connections fall in the 30 to 300 Mbps range. No premises here are stuck below 5 Mbps. Every property meets the basic threshold for video calls.
Here is how the broadband at SG12 9SR maps against common household needs.
Fixed Wireless Access is not currently available at SG12 9SR. For properties without fibre, 4G or 5G home broadband from Three, EE, or Vodafone may be an alternative.
0% of premises at SG12 9SR 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 SG12 9SR 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.
4G outdoor coverage at SG12 9SR reaches 95%. 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. Strong 4G coverage combined with limited fixed broadband means 4G home broadband could be a practical alternative here.
Suitability scores for SG12 9SR: remote working 35/100, family 50/100, value 50/100. Remote workers may want to verify actual speeds before committing.
The local authority for SG12 9SR is East Hertfordshire. The immediate area is Great Amwell, a distinct community within the wider district. The SG12 postcode area contains 908 postcodes on this site. Superfast broadband across SG12 ranges from 0% to 100%. SG12 9SR is below the area average of 94%.
How does SG12 9SR compare to its neighbours? SG12 9SU (0.03 miles, great-amwell) has 0% superfast coverage and 0% gigabit. SG12 9SJ (0.04 miles, great-amwell) has 0% superfast coverage and 0% gigabit. SG12 9SR has better superfast coverage than its immediate neighbours.
Not every property at SG12 9SR gets the same speeds. Run a postcode check with each provider before signing up. Headline speeds are not guarantees. 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.
Life in Great Amwell depends on what matters to you. Broadband, transport, and local services vary by street.
Looking at the overall picture for SG12 9SR, a few things are worth highlighting. East Hertfordshire 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. Great Amwell 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.
Before making a decision about SG12 9SR, visit in person. Check the commute at rush hour. Try the mobile signal indoors. Look at local shops and green spaces. Ask about broadband reliability, not just speed. Data sets the scene, but real life fills in the gaps.
That is the full data picture for SG12 9SR in Great Amwell. Use it alongside your own research. For the most current broadband speeds, run a live speed test from this page. Check back periodically as data is refreshed with new releases.
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 SG12 9SR
What are the broadband speeds available at SG12 9SR?
Superfast broadband (30 Mbps+) is available to 60% of premises at SG12 9SR.
What is the average house price near SG12 9SR?
No recent house price data is available for SG12 9SR.
What is the flood risk for properties at SG12 9SR?
SG12 9SR has a High flood risk rating. Check Environment Agency maps for detail.
What schools are nearby in the SG12 9SR area?
School data for SG12 9SR is being updated. Check the Get Information About Schools service for the latest.
How does crime rate in SG12 9SR compare to other areas?
Crime data for this area is being updated.
How suitable is SG12 9SR for remote working?
SG12 9SR scores 35/100 for remote working suitability. Speeds may limit video-heavy workflows.
What is the mobile signal like at SG12 9SR?
4G outdoor coverage at SG12 9SR is 95%. Indoor coverage may be lower.
What is the most common energy efficiency rating near SG12 9SR?
EPC data for SG12 9SR is being updated. Check the EPC register for individual property ratings.
What is the council tax band distribution at SG12 9SR?
Council tax band information for SG12 9SR is being updated.
How accessible are GP surgeries near SG12 9SR?
GP surgery data for SG12 9SR is being updated. Check NHS.uk for the latest.
What transport links are available near SG12 9SR?
Transport data for SG12 9SR is being updated.
Is SG12 9SR a suitable area for families?
SG12 9SR scores 50/100 for family suitability. Check school and crime sections above for detail.
What is the air quality like at SG12 9SR?
Air quality data for SG12 9SR is being updated.
How far is the nearest EV charging point from SG12 9SR?
EV charging data for SG12 9SR is being updated. Check Zap-Map for the latest.
Can I get full fibre broadband at SG12 9SR?
Full fibre availability at SG12 9SR is being updated. Check Openreach for the latest rollout status.
Area suitability scores
SG12 9SRRemote Worker
35Based on superfast broadband coverage, FTTP %, and 4G mobile outdoor coverage.
Family
50Based on Ofsted school ratings, crime rate, flood risk, and GP surgery proximity.
Value for Money
50Based on broadband quality relative to average house price in the area.
Map
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Area info
Parish
Great Amwell
District
East Hertfordshire
Region
Constituency
LSOA
E01023468
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