CM77 broadband and area guide
Ofcom coverage, connection speeds, house prices and local data for 451 postcodes across 3 sectors in Braintree.
Full fibre
0%
Gigabit
86%
Superfast
92%
Postcodes
451
CM77 serves Braintree with gigabit availability slightly below its neighbouring postcode districts. Cable networks provide the bulk of high-speed coverage across 451 postcodes.
Broadband speeds in CM77
Share of CM77 premises by the fastest download speed available, averaged across all 451 postcodes in the district.
Gigabit infrastructure covers 86.2% of the 451 postcodes, translating to approximately 390 postcodes with 300+ Mbps capability. The remaining coverage splits between intermediate speeds and below-USO shortfalls. Superfast reaches 92%, meaning one in twelve premises cannot access 30 Mbps. The slower end, below 10 Mbps, accounts for 3.4%, a notably higher proportion than rural counterparts: this affects about 15 postcodes directly. Mid-range speeds between 30 and 300 Mbps cover just 5.8% (26 postcodes). The data reveals concentration in primary routes served by cable, with secondary areas more likely to receive intermediate speeds. This pattern reflects commercial cable deployment strategies where rollout prioritizes density and early returns.
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
5%
Premises that can use a fixed wireless access service
Broadband by sector
CM77 splits into 3 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 |
|---|---|---|---|---|
| CM77 6 | 86 | 89% | 0% | 85% |
| CM77 7 | 138 | 97% | 0% | 93% |
| CM77 8 | 227 | 90% | 0% | 83% |
All CM77 6 postcodes (86)
All CM77 7 postcodes (138)
All CM77 8 postcodes (227)
Best deals
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Living in Braintree
The concentration at the high end masks a small but notable tail of underserved postcodes. For those in the 3.4% without basic modern speeds, local infrastructure investment or alternative solutions may be necessary before routine upgrades.
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
CM77 broadband FAQs
Does CM77 have full fibre gigabit availability?
No, full fibre is unavailable (0%), but cable gigabit reaches 86.2% of postcodes instead.
What's the limitation for the slowest-connected postcodes in CM77?
3.4% of postcodes fall below 10 Mbps, affecting approximately 15 premises dependent on alternative solutions.
How does superfast coverage compare to gigabit in CM77?
Superfast reaches 92% of postcodes; gigabit covers 86.2%, showing a 5.8 percentage-point gap mainly reflecting mid-range cable speeds.
What share of CM77 sits on intermediate speeds?
5.8% occupy the 30 to 300 Mbps superfast range, serving households adequately for streaming and working.
Neighbouring districts
Check your exact postcode
Every postcode in CM77 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