NP25 postcode
Broadband in NP25 5SY
Whitecastle, Monmouthshire
Superfast broadband covers 33.3% of premises here.
Free, independent comparison · Ofcom verified data · Updated 20 March 2026
Flood Risk
Low
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 NP25 5SY 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 NP25 5SY.
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) | 33% | 33% | 10-20 Mbps |
| Superfast (30+ Mbps) | 33% | 33% | 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 NP25 5SY
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 Monmouthshire
Most common: Band
Annual council tax estimates for , 2024/25
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This is the area guide for NP25 5SY, located in Whitecastle (Monmouthshire). 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 33.3%. Nationally, 93% of UK premises have access. Some properties may struggle with speed.
Looking at the full speed profile for NP25 5SY gives a better picture of what to expect. 16.7% of connections fall in the below 2 Mbps range. 33.3% of connections fall in the 2 to 5 Mbps range. 16.7% of connections fall in the 5 to 10 Mbps range. 33.3% of connections fall in the 30 to 300 Mbps range. 50% of premises get less than 5 Mbps. That is not enough for reliable video calls or streaming.
Translating the numbers at NP25 5SY into daily use gives a clearer picture. Superfast coverage is limited here. Streaming HD video should work on one device. Multiple simultaneous streams may struggle during peak hours.
FWA broadband has not reached NP25 5SY yet. Satellite services like Starlink or 4G home broadband routers can fill the gap where fixed-line options are limited.
0% of premises at NP25 5SY 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 NP25 5SY 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.
Outdoor 4G mobile signal at NP25 5SY 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. Strong 4G coverage combined with limited fixed broadband means 4G home broadband could be a practical alternative here.
Suitability scores for NP25 5SY: remote working 35/100, family 50/100, value 50/100. Remote workers may want to verify actual speeds before committing.
The local authority for NP25 5SY is Monmouthshire. The immediate area is Whitecastle, a distinct community within the wider district. The NP25 postcode area contains 569 postcodes on this site. Superfast broadband across NP25 ranges from 0% to 100%. NP25 5SY is below the area average of 86%.
Not every property at NP25 5SY 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.
Every part of Whitecastle has its own feel. This data gives you the factual starting point. A visit fills in the rest.
What does all of this mean for someone considering NP25 5SY? Monmouthshire 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. Whitecastle 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 NP25 5SY, 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.
This covers the key data for NP25 5SY. Broadband, property, schools, safety, and local services all in one place. For area-wide trends, see the Whitecastle 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 NP25 5SY
What are the broadband speeds available at NP25 5SY?
Superfast broadband (30 Mbps+) is available to 33.3% of premises at NP25 5SY.
What is the average house price near NP25 5SY?
No recent house price data is available for NP25 5SY.
What is the flood risk for properties at NP25 5SY?
NP25 5SY has a Low flood risk rating. Check Environment Agency maps for detail.
What schools are nearby in the NP25 5SY area?
School data for NP25 5SY is being updated. Check the Get Information About Schools service for the latest.
How does crime rate in NP25 5SY compare to other areas?
Crime data for this area is being updated.
How suitable is NP25 5SY for remote working?
NP25 5SY scores 35/100 for remote working suitability. Speeds may limit video-heavy workflows.
What is the mobile signal like at NP25 5SY?
4G outdoor coverage at NP25 5SY is 95%. Indoor coverage may be lower.
What is the most common energy efficiency rating near NP25 5SY?
EPC data for NP25 5SY is being updated. Check the EPC register for individual property ratings.
What is the council tax band distribution at NP25 5SY?
Council tax band information for NP25 5SY is being updated.
How accessible are GP surgeries near NP25 5SY?
GP surgery data for NP25 5SY is being updated. Check NHS.uk for the latest.
What transport links are available near NP25 5SY?
Transport data for NP25 5SY is being updated.
Is NP25 5SY a suitable area for families?
NP25 5SY scores 50/100 for family suitability. Check school and crime sections above for detail.
What is the air quality like at NP25 5SY?
Air quality data for NP25 5SY is being updated.
How far is the nearest EV charging point from NP25 5SY?
EV charging data for NP25 5SY is being updated. Check Zap-Map for the latest.
Can I get full fibre broadband at NP25 5SY?
Full fibre availability at NP25 5SY is being updated. Check Openreach for the latest rollout status.
Area suitability scores
NP25 5SYRemote 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
Area info
Parish
Whitecastle
District
Monmouthshire
Region
Constituency
LSOA
W01001568
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