CF10 postcode
Broadband in CF10 3EW
Castle, Cardiff
Standard broadband is the main option at this postcode.
Compare Broadband Deals →Free, independent comparison · Ofcom verified data · Updated 26 March 2026
Flood Risk
Low
Fibre (FTTP)
No
Best speed
Data pending
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.
Your household needs approximately 14 Mbps. We don't have speed data for CF10 3EW yet.
Speed Test
Check your current download speed and see how it compares to what is available at CF10 3EW.
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) | 0% | 0% | 10-20 Mbps |
| Superfast (30+ Mbps) | 0% | 0% | 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 CF10 3EW
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: Low
This postcode is in undefined — low risk of flooding from rivers and sea.
Flood Zone
Risk Level
Low
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 Cardiff
Most common: Band
Annual council tax estimates for , 2024/25
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Looking at CF10 3EW in Castle? 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 broadband (30 Mbps+) coverage at CF10 3EW stands at 0%. That is below the UK average of 93%.
Looking at the full speed profile for CF10 3EW gives a better picture of what to expect. 100% of connections fall in the 10 to 30 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 CF10 3EW maps against common household needs. With no superfast coverage, streaming is limited. Standard definition video may work, but HD and 4K are unlikely to run smoothly. Downloading large files will take significantly longer than average. Limited superfast coverage means remote workers should test their connection carefully. Video calls may drop or pixelate. A mobile hotspot can serve as a backup.
Fixed Wireless Access is not currently available at CF10 3EW. For properties without fibre, 4G or 5G home broadband from Three, EE, or Vodafone may be an alternative.
The USO guarantees every UK home at least 10 Mbps. At CF10 3EW, 0% of properties do not meet this threshold. Every property here meets the minimum standard. That is not the case everywhere. Next-generation access (NGA) reaches 0% of the area. NGA typically means speeds of 24 Mbps or above.
Flood risk at CF10 3EW is rated Low. Minor precautions may be worth considering. Check with insurers about any loading on premiums.
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 CF10 3EW 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 CF10 3EW: remote working 50/100, family 50/100, value 50/100. Remote workers may want to verify actual speeds before committing.
CF10 3EW falls within the Cardiff local authority area. The immediate area is Castle, a distinct community within the wider district. The CF10 postcode area contains 566 postcodes on this site. Superfast broadband across CF10 ranges from 0% to 100%.
How does CF10 3EW compare to its neighbours? CF10 3ET (0.03 miles, castle) has 0% superfast coverage and 0% gigabit.
When choosing a broadband provider at CF10 3EW, 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.
Life in Castle depends on what matters to you. Broadband, transport, and local services vary by street.
Looking at the overall picture for CF10 3EW, a few things are worth highlighting. Broadband is the main concern at CF10 3EW. With no superfast coverage, check what alternatives exist before committing. 4G home broadband, satellite, or community fibre schemes may fill the gap. Cardiff 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. Castle 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 CF10 3EW. 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.
That is the full data picture for CF10 3EW in Castle. 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 CF10 3EW
What are the broadband speeds available at CF10 3EW?
Broadband is available at CF10 3EW. Contact local providers for specific speed information.
What is the average house price near CF10 3EW?
No recent house price data is available for CF10 3EW.
What is the flood risk for properties at CF10 3EW?
CF10 3EW has a Low flood risk rating. Check Environment Agency maps for detail.
What schools are nearby in the CF10 3EW area?
School data for CF10 3EW is being updated. Check the Get Information About Schools service for the latest.
How does crime rate in CF10 3EW compare to other areas?
Crime data for this area is being updated.
How suitable is CF10 3EW for remote working?
CF10 3EW scores 50/100 for remote working suitability. Speeds may limit video-heavy workflows.
What is the mobile signal like at CF10 3EW?
4G outdoor coverage at CF10 3EW is 95%. Indoor coverage may be lower.
What is the most common energy efficiency rating near CF10 3EW?
EPC data for CF10 3EW is being updated. Check the EPC register for individual property ratings.
What is the council tax band distribution at CF10 3EW?
Council tax band information for CF10 3EW is being updated.
How accessible are GP surgeries near CF10 3EW?
GP surgery data for CF10 3EW is being updated. Check NHS.uk for the latest.
What transport links are available near CF10 3EW?
Transport data for CF10 3EW is being updated.
Is CF10 3EW a suitable area for families?
CF10 3EW scores 50/100 for family suitability. Check school and crime sections above for detail.
What is the air quality like at CF10 3EW?
Air quality data for CF10 3EW is being updated.
How far is the nearest EV charging point from CF10 3EW?
EV charging data for CF10 3EW is being updated. Check Zap-Map for the latest.
Can I get full fibre broadband at CF10 3EW?
Full fibre availability at CF10 3EW is being updated. Check Openreach for the latest rollout status.
Area suitability scores
CF10 3EWRemote Worker
50Based 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
Castle
District
Cardiff
Region
Constituency
LSOA
W01002019
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