CO5 broadband and area guide
Ofcom coverage, connection speeds, house prices and local data for 957 postcodes across 4 sectors in Colchester.
Full fibre
0%
Gigabit
55%
Superfast
95%
Postcodes
957
CO5 encompasses 957 Braintree postcodes with markedly lower gigabit penetration at 55.1%. This district sits at the slower end of Essex broadband provision.
Broadband speeds in CO5
Share of CO5 premises by the fastest download speed available, averaged across all 957 postcodes in the district.
Gigabit availability drops to 55.1%, with 40.2% of postcodes in the 30-300 Mbps range. Superfast (>30 Mbps) coverage reaches 95.3%, ensuring no postcode lacks basic broadband for streaming or work. However, 2% of CO5 falls below 10 Mbps, the highest proportion in this batch, and 0.3% miss uso entirely. Wireless adds 8.4%, reflecting attempts to backfill slower areas with alternative technology. Braintree's CO5 reflects older, less extensively upgraded infrastructure compared to Colchester. The split between gigabit and midspeed reveals a district at a crossroads: half the postcodes have modern high-speed networks, half are constrained to competent but slower speeds. For households choosing addresses, gigabit should not be assumed. Braintree overall lags Colchester in network investment, and CO5 shows it clearly.
Source: Ofcom Connected Nations. Percentages are district-wide averages of postcode-level availability, so rows may not sum to exactly 100%.
Connectivity in detail
Below 10 Mbps USO
<1%
Premises unable to get the 10 Mbps universal service minimum
Fixed wireless
8%
Premises that can use a fixed wireless access service
Broadband by sector
CO5 splits into 4 postcode sectors. Coverage and prices can differ street by street, so open a sector below to find your exact postcode.
| Sector | Postcodes | Superfast | Full fibre | Gigabit |
|---|---|---|---|---|
| CO5 0 | 281 | 97% | 0% | 45% |
| CO5 7 | 170 | 94% | 0% | 89% |
| CO5 8 | 255 | 99% | 0% | 26% |
| CO5 9 | 251 | 91% | 0% | 74% |
All CO5 0 postcodes (281)
All CO5 7 postcodes (170)
All CO5 8 postcodes (255)
All CO5 9 postcodes (251)
Best deals
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Living in Colchester
CO5 is the slowest Braintree district. Most postcodes have adequate superfast coverage, but gigabit is far from guaranteed. Those prioritising speed should investigate alternatives or relocate to Colchester's CO2, CO4 zones.
Remote worker score
54/100
Connectivity and amenities for home working
Family score
50/100
Schools, safety and family amenities
Value score
50/100
What you get for the local price level
CO5 broadband FAQs
Why is CO5 slower than Colchester's postcode districts?
Braintree's infrastructure has lagged behind Colchester's. Cable and fibre deployment here is less extensive.
What can I expect if I do not have gigabit?
40.2% of postcodes sit in the 30-300 Mbps tier, which is adequate for work and streaming but lacks gigabit headroom.
How many postcodes in CO5 are really slow?
2% fall below 10 Mbps, a notable minority. Check your specific address before moving.
Is wireless a reliable backup?
At 8.4% coverage, it is one option for postcodes that miss cable or fibre, though professional assessment is needed.
Neighbouring districts
Check your exact postcode
Every postcode in CO5 has its own page with broadband speeds, house prices, school ratings and crime stats. You can also compare providers for your address.
Data sources: Broadband data from Ofcom Connected Nations 2025 · House prices from HM Land Registry · Crime from Police.uk · See all data sources