SE18 broadband and area guide
Ofcom coverage, connection speeds, house prices and local data for 1,385 postcodes across 8 sectors in Greenwich.
Full fibre
91%
Gigabit
91%
Superfast
99%
Postcodes
1,385
SE18 (Greenwich, 1,385 postcodes) is London's largest postcode in this batch. Despite its scale, 90.8% reach full fibre gigabit.
Broadband speeds in SE18
Share of SE18 premises by the fastest download speed available, averaged across all 1,385 postcodes in the district.
SE18 is a case study in scaling gigabit infrastructure. Over 1,300 postcodes yet 90.8% full fibre and 90.8% gigabit, with a minor divergence: ultrafast reaches 93.8%, hinting at approximately 3 percentage points of cable-delivered gigabit supplementing fibre capacity. The speed distribution is 92.1% at 300+ Mbps (slightly higher than the fibre percentage, reflecting cable's contribution), with 6.6% at 30-300 Mbps. Superfast sits at 98.7%, nearly universal. SE18's combination of massive scale and high connectivity suggests Greenwich's systematic gigabit rollout has blanketed this entire postcode region. Upload characteristics and latency on fibre premises enable professional work as readily as consumer services.
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
SE18 splits into 8 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 |
|---|---|---|---|---|
| SE18 1 | 193 | 100% | 98% | 98% |
| SE18 2 | 184 | 100% | 99% | 99% |
| SE18 3 | 189 | 100% | 93% | 93% |
| SE18 4 | 147 | 99% | 76% | 76% |
| SE18 5 | 182 | 99% | 88% | 88% |
| SE18 6 | 291 | 96% | 86% | 86% |
| SE18 7 | 198 | 100% | 95% | 95% |
| SE18 9 | 1 | 0% | 0% | 0% |
All SE18 1 postcodes (193)
All SE18 2 postcodes (184)
All SE18 3 postcodes (189)
All SE18 4 postcodes (147)
All SE18 5 postcodes (182)
All SE18 6 postcodes (291)
All SE18 7 postcodes (198)
All SE18 9 postcodes (1)
Best deals
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Living in Greenwich
SE18 proves London can deploy full-fibre gigabit across 1,300+ dense residential postcodes.
Crime per month
2
Average recorded crimes per local statistical area
Remote worker score
99/100
Connectivity and amenities for home working
Family score
80/100
Schools, safety and family amenities
Value score
50/100
What you get for the local price level
SE18 broadband FAQs
What's my broadband odds in SE18?
90.8% gigabit (mostly fibre, partly cable), 7.4% superfast. Universally fast by any measure.
Why does ultrafast exceed fibre here?
Cable networks in parts of SE18 deliver gigabit speeds without being full-fibre infrastructure, inflating the ultrafast percentage.
Are there slow zones?
No postcodes below superfast; 1.3% lack full gigabit but still sit above 30 Mbps.
Is SE18 London's best-connected postcode by scale?
Yes. Balancing 1,385 postcodes with 90.8% gigabit is a rare achievement, matched by few sectors.
Neighbouring districts
Check your exact postcode
Every postcode in SE18 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