CB23 postcode

Broadband in CB23 8AY

Caldecote, South Cambridgeshire

Gigabit broadband is available at this postcode.

Best speedGigabit (1Gbps+)
StandardSuperfastGigabit
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Free, independent comparison · Ofcom verified data · Updated 26 March 2026

Flood Risk

Medium

Fibre (FTTP)

No

Best speed

Gigabit (1Gbps+)

Reviewed by Arthur TuringData last verified: 26 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 CB23 8AY. 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 CB23 8AY.

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)71%
71%
10-20 Mbps
Superfast (30+ Mbps)71%
71%
30-80 Mbps
Ultrafast (100+ Mbps)71%
71%
100-300 Mbps
Full Fibre (FTTP)N/A
N/A
300-900 Mbps
Gigabit71%
71%
900-1,000 Mbps

Speed Distribution at CB23 8AY

10–30 Mbps (29%)
300+ Mbps (71%)

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 South Cambridgeshire

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 CB23 8AY

This is the area guide for CB23 8AY, located in Caldecote (South Cambridgeshire). It covers connectivity, property, safety, and local services. Every claim links back to a specific data point. Read on for the detail.

71.4% of premises at CB23 8AY can access superfast broadband. The UK average is 93%. There is room for improvement here. Ultrafast broadband (100 Mbps+) reaches 71.4% of properties. Over half of premises have access to faster tiers. Gigabit-capable connections cover 71.4% of premises. Gigabit is available but not yet widespread at this postcode.

The speed distribution at CB23 8AY tells a more detailed story than headline figures alone. 28.6% of connections fall in the 10 to 30 Mbps range. 71.4% 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.

Translating the numbers at CB23 8AY into daily use gives a clearer picture.

Fixed Wireless Access is not currently available at CB23 8AY. 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 CB23 8AY, 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 71.4% of the area. NGA typically means speeds of 24 Mbps or above.

Flood risk at CB23 8AY 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.

Outdoor 4G mobile signal at CB23 8AY 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 CB23 8AY: remote working 35/100, family 50/100, value 50/100. Remote workers may want to verify actual speeds before committing.

CB23 8AY falls within the South Cambridgeshire local authority area. The immediate area is Caldecote, a distinct community within the wider district. The CB23 postcode area contains 861 postcodes on this site. Superfast broadband across CB23 ranges from 0% to 100%. CB23 8AY is below the area average of 94%.

How does CB23 8AY compare to its neighbours? CB23 8BF (0.02 miles, caldecote) has 16.7% superfast coverage and 16.7% gigabit. CB23 8AY has better superfast coverage than its immediate neighbours.

When choosing a broadband provider at CB23 8AY, 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 Caldecote 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 CB23 8AY? South Cambridgeshire 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. Caldecote 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 CB23 8AY. 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 CB23 8AY in Caldecote. 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 CB23 8AY

What are the broadband speeds available at CB23 8AY?

Superfast broadband (30 Mbps+) is available to 71.4% of premises at CB23 8AY. Ultrafast coverage is at 71.4%.

What is the average house price near CB23 8AY?

No recent house price data is available for CB23 8AY.

What is the flood risk for properties at CB23 8AY?

CB23 8AY has a Medium flood risk rating. Check Environment Agency maps for detail.

What schools are nearby in the CB23 8AY area?

School data for CB23 8AY is being updated. Check the Get Information About Schools service for the latest.

How does crime rate in CB23 8AY compare to other areas?

Crime data for this area is being updated.

How suitable is CB23 8AY for remote working?

CB23 8AY scores 35/100 for remote working suitability. Speeds may limit video-heavy workflows.

What is the mobile signal like at CB23 8AY?

4G outdoor coverage at CB23 8AY is 95%. Indoor coverage may be lower.

What is the most common energy efficiency rating near CB23 8AY?

EPC data for CB23 8AY is being updated. Check the EPC register for individual property ratings.

What is the council tax band distribution at CB23 8AY?

Council tax band information for CB23 8AY is being updated.

How accessible are GP surgeries near CB23 8AY?

GP surgery data for CB23 8AY is being updated. Check NHS.uk for the latest.

What transport links are available near CB23 8AY?

Transport data for CB23 8AY is being updated.

Is CB23 8AY a suitable area for families?

CB23 8AY scores 50/100 for family suitability. Check school and crime sections above for detail.

What is the air quality like at CB23 8AY?

Air quality data for CB23 8AY is being updated.

How far is the nearest EV charging point from CB23 8AY?

EV charging data for CB23 8AY is being updated. Check Zap-Map for the latest.

Can I get full fibre broadband at CB23 8AY?

Ultrafast broadband (100 Mbps+) reaches 71.4% of premises. Check Openreach and local operators for FTTP availability.

Area suitability scores

CB23 8AY

Remote Worker

35

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

Caldecote

District

South Cambridgeshire

Region

Constituency

LSOA

E01018231

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