CM18 broadband and area guide
Ofcom coverage, connection speeds, house prices and local data for 427 postcodes across 2 sectors in Harlow.
Full fibre
0%
Gigabit
89%
Superfast
98%
Postcodes
427
CM18 covers 427 postcodes in Epping Forest and ranks highest in this batch for gigabit availability at 91.3%.
Broadband speeds in CM18
Share of CM18 premises by the fastest download speed available, averaged across all 427 postcodes in the district.
This is the standout performer for Essex. Superfast reaches 98.2% of premises. Gigabit availability is 91.3%, the highest in this entire batch. The ultrafast share is similarly strong at 91.3%, though gigabit-specific is marginally lower at 88.5%, suggesting a small proportion of ultrafast-only premises on fibre infrastructure. Speed distribution is heavily weighted to gigabit: 91.3% achieve 300 Mbps or above, with only 6.9% in the 30-300 Mbps band. Below-USO coverage is zero. Only 0.8% fall below 10 Mbps. Cable infrastructure dominance is near-absolute. CM18 represents the pinnacle of cable-deployed gigabit availability at scale.
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
0%
Premises unable to get the 10 Mbps universal service minimum
Fixed wireless
0%
Premises that can use a fixed wireless access service
Broadband by sector
CM18 splits into 2 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 |
|---|---|---|---|---|
| CM18 6 | 229 | 100% | 0% | 91% |
| CM18 7 | 198 | 97% | 0% | 86% |
All CM18 6 postcodes (229)
All CM18 7 postcodes (198)
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Living in Harlow
Premises here benefit from maturity in cable deployment. Nearly nine out of ten postcodes have gigabit-capable services. Premises without gigabit are statistical outliers.
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
CM18 broadband FAQs
Is CM18 the strongest performer for gigabit in this analysis?
At 91.3%, it ranks at the top; one other postcode exceeds this rate by a small margin.
Are there postcodes without gigabit access?
Gigabit is absent in roughly 9% of postcodes, mostly on intermediate superfast-only infrastructure.
What's the tail risk for connectivity?
Below-USO coverage is zero and only 0.8% sit below 10 Mbps, indicating connectivity failure is negligible.
Is fibre present alongside cable?
Cable is the dominant technology; full fibre infrastructure is not recorded.
Neighbouring districts
Check your exact postcode
Every postcode in CM18 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