PO21 postcode

Broadband in PO21 4AT

Aldwick, Arun

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

Medium

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 PO21 4AT. 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 PO21 4AT.

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)N/A
N/A
300-900 Mbps
Gigabit100%
100%
900-1,000 Mbps

Speed Distribution at PO21 4AT

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: Medium

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

Flood Zone

Risk Level

Medium

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 Arun

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 PO21 4AT

PO21 4AT sits in Aldwick, part of Arun. This guide covers broadband speeds, house prices, schools, and more. Every figure comes from verified public data sources. Use it alongside your own research when comparing areas.

Superfast broadband (30 Mbps+) coverage at PO21 4AT stands at 100%. That is above the UK average of 93%. 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.

The speed distribution at PO21 4AT tells a more detailed story than headline figures alone. 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.

What do the broadband speeds at PO21 4AT mean in practice? 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 PO21 4AT. For properties without fibre, 4G or 5G home broadband from Three, EE, or Vodafone may be an alternative.

0% of premises at PO21 4AT 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 PO21 4AT is rated Medium. 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 PO21 4AT 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 PO21 4AT: remote working 55/100, family 50/100, value 50/100. Remote workers may want to verify actual speeds before committing.

The local authority for PO21 4AT is Arun. The immediate area is Aldwick, a distinct community within the wider district. The PO21 postcode area contains 1334 postcodes on this site. Superfast broadband across PO21 ranges from 0% to 100%. PO21 4AT is close to the area average of 99%.

How does PO21 4AT compare to its neighbours? PO21 4BT (0.06 miles, aldwick) has 100% superfast coverage and 0% gigabit. Coverage is broadly similar across these neighbouring postcodes.

When choosing a broadband provider at PO21 4AT, 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.

Every part of Aldwick has its own feel. This data gives you the factual starting point. A visit fills in the rest.

Pulling the data together for PO21 4AT, here is what stands out. Connectivity at PO21 4AT is a strength. Strong broadband coverage gives flexibility for both working and leisure. The area scores well on that front. Arun 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. Aldwick 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 PO21 4AT. 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 PO21 4AT in Aldwick. 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 PO21 4AT

What are the broadband speeds available at PO21 4AT?

Superfast broadband (30 Mbps+) is available to 100% of premises at PO21 4AT. Ultrafast coverage is at 100%.

What is the average house price near PO21 4AT?

No recent house price data is available for PO21 4AT.

What is the flood risk for properties at PO21 4AT?

PO21 4AT has a Medium flood risk rating. Check Environment Agency maps for detail.

What schools are nearby in the PO21 4AT area?

School data for PO21 4AT is being updated. Check the Get Information About Schools service for the latest.

How does crime rate in PO21 4AT compare to other areas?

Crime data for this area is being updated.

How suitable is PO21 4AT for remote working?

PO21 4AT scores 55/100 for remote working suitability. Speeds may limit video-heavy workflows.

What is the mobile signal like at PO21 4AT?

4G outdoor coverage at PO21 4AT is 95%. Indoor coverage may be lower.

What is the most common energy efficiency rating near PO21 4AT?

EPC data for PO21 4AT is being updated. Check the EPC register for individual property ratings.

What is the council tax band distribution at PO21 4AT?

Council tax band information for PO21 4AT is being updated.

How accessible are GP surgeries near PO21 4AT?

GP surgery data for PO21 4AT is being updated. Check NHS.uk for the latest.

What transport links are available near PO21 4AT?

Transport data for PO21 4AT is being updated.

Is PO21 4AT a suitable area for families?

PO21 4AT scores 50/100 for family suitability. Check school and crime sections above for detail.

What is the air quality like at PO21 4AT?

Air quality data for PO21 4AT is being updated.

How far is the nearest EV charging point from PO21 4AT?

EV charging data for PO21 4AT is being updated. Check Zap-Map for the latest.

Can I get full fibre broadband at PO21 4AT?

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

Area suitability scores

PO21 4AT

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

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Area info

Parish

Aldwick

District

Arun

Region

Constituency

LSOA

E01031380

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