SO21 postcode
Broadband in SO21 1UA
Colden Common, Winchester
Superfast broadband covers 100% of premises here.
Free, independent comparison · Ofcom verified data · Updated 17 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 SO21 1UA 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 SO21 1UA.
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) | 100% | 100% | 10-20 Mbps |
| Superfast (30+ Mbps) | 100% | 100% | 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 SO21 1UA
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
Compare broadband in SO21 1UA
Find the best broadband packages available at your address.
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 Winchester
Most common: Band
Annual council tax estimates for , 2024/25
Ready to switch? See what's available at your address.
Check Deals →Living near SO21 1UA
This is the area guide for SO21 1UA, located in Colden Common (Winchester). It covers connectivity, property, safety, and local services. Every claim links back to a specific data point. Read on for the detail.
Superfast coverage here stands at 100%. Nationally, 93% of UK premises have access. Coverage at this postcode is strong.
The speed distribution at SO21 1UA tells a more detailed story than headline figures alone. 100% 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.
Translating the numbers at SO21 1UA 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.
Fixed Wireless Access is not currently available at SO21 1UA. For properties without fibre, 4G or 5G home broadband from Three, EE, or Vodafone may be an alternative.
0% of premises at SO21 1UA 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 SO21 1UA 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 SO21 1UA 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.
Suitability scores for SO21 1UA: remote working 55/100, family 50/100, value 50/100. Remote workers may want to verify actual speeds before committing.
SO21 1UA falls within the Winchester local authority area. The immediate area is Colden Common, a distinct community within the wider district. The SO21 postcode area contains 732 postcodes on this site. Superfast broadband across SO21 ranges from 0% to 100%. SO21 1UA is above the area average of 79%.
How does SO21 1UA compare to its neighbours? SO21 1UJ (0.04 miles, colden-common) has 100% superfast coverage and 0% gigabit. SO21 1TT (0.05 miles, colden-common) has 100% superfast coverage and 82.4% gigabit. Coverage is broadly similar across these neighbouring postcodes.
Broadband availability varies by provider and by property. At SO21 1UA, check individual coverage tools from BT, Sky, Virgin Media, and local operators. 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.
Colden Common offers a mix of residential properties and local amenities. The character of any area is best judged in person.
Pulling the data together for SO21 1UA, here is what stands out. Connectivity at SO21 1UA is a strength. Strong broadband coverage gives flexibility for both working and leisure. The area scores well on that front. Winchester 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. Colden Common 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.
Data is a starting point for Colden Common. Walk the streets at different times. Test your mobile signal. Check parking, noise levels, and the feel of the neighbourhood. Run a speed test on the actual connection. Some things only a visit can reveal.
This covers the key data for SO21 1UA. Broadband, property, schools, safety, and local services all in one place. For area-wide trends, see the Colden Common 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 SO21 1UA
What are the broadband speeds available at SO21 1UA?
Superfast broadband (30 Mbps+) is available to 100% of premises at SO21 1UA.
What is the average house price near SO21 1UA?
No recent house price data is available for SO21 1UA.
What is the flood risk for properties at SO21 1UA?
SO21 1UA has a High flood risk rating. Check Environment Agency maps for detail.
What schools are nearby in the SO21 1UA area?
School data for SO21 1UA is being updated. Check the Get Information About Schools service for the latest.
How does crime rate in SO21 1UA compare to other areas?
Crime data for this area is being updated.
How suitable is SO21 1UA for remote working?
SO21 1UA scores 55/100 for remote working suitability. Speeds may limit video-heavy workflows.
What is the mobile signal like at SO21 1UA?
4G outdoor coverage at SO21 1UA is 95%. Indoor coverage may be lower.
What is the most common energy efficiency rating near SO21 1UA?
EPC data for SO21 1UA is being updated. Check the EPC register for individual property ratings.
What is the council tax band distribution at SO21 1UA?
Council tax band information for SO21 1UA is being updated.
How accessible are GP surgeries near SO21 1UA?
GP surgery data for SO21 1UA is being updated. Check NHS.uk for the latest.
What transport links are available near SO21 1UA?
Transport data for SO21 1UA is being updated.
Is SO21 1UA a suitable area for families?
SO21 1UA scores 50/100 for family suitability. Check school and crime sections above for detail.
What is the air quality like at SO21 1UA?
Air quality data for SO21 1UA is being updated.
How far is the nearest EV charging point from SO21 1UA?
EV charging data for SO21 1UA is being updated. Check Zap-Map for the latest.
Can I get full fibre broadband at SO21 1UA?
Full fibre availability at SO21 1UA is being updated. Check Openreach for the latest rollout status.
Area suitability scores
SO21 1UARemote Worker
55Based 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
Explore nearby postcodes
Area info
Parish
Colden Common
District
Winchester
Region
Constituency
LSOA
E01023228
Best deals
Compare broadband deals in SO21 1UA
Find the best packages from UK providers in minutes.
Broadband deals for SO21 1UA
Compare Deals