SE21 broadband and area guide
Ofcom coverage, connection speeds, house prices and local data for 281 postcodes across 2 sectors in Southwark.
Full fibre
86%
Gigabit
86%
Superfast
99%
Postcodes
281
SE21 (Lambeth, 281 postcodes) combines south-of-the-Thames density with 85.8% full fibre access.
Broadband speeds in SE21
Share of SE21 premises by the fastest download speed available, averaged across all 281 postcodes in the district.
Lambeth SE21, despite modest size (281 postcodes), sustains 85.8% full fibre and 86.1% gigabit. Superfast reaches 98.6%, leaving barely 1% on older copper. The speed mix splits between 86.1% gigabit and 12.5% in the 30-300 band. SE21's fibre percentage is slightly lower than nearby SE17 (88.9%) but substantially higher than SE25's 86.7%, reflecting Lambeth's uneven deployment across postcode sectors. This is still London elite: 85%+ full fibre at any scale marks hyperconnected infrastructure. Upload symmetry on fibre premises suits professional work as much as domestic streaming. The concentration of gigabit across 281 postcodes reflects intensive residential development prioritized for early fibre rollout.
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
SE21 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 |
|---|---|---|---|---|
| SE21 7 | 91 | 100% | 66% | 66% |
| SE21 8 | 190 | 98% | 95% | 95% |
All SE21 7 postcodes (91)
All SE21 8 postcodes (190)
Best deals
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Living in Southwark
SE21 shows how residential Lambeth maintains high gigabit penetration even in moderately sized 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
SE21 broadband FAQs
Will SE21 offer full fibre?
85.8%, among Lambeth's better-connected sectors. The rest sit mostly between 30-300 Mbps.
How does SE21 compare to other Lambeth postcodes?
SE21's 85.8% fibre sits comfortably within Lambeth's strong range, where most postcodes exceed 85% gigabit capacity.
Is 12.5% without gigabit acceptable?
In Lambeth, yes. Those postcodes access 30-300 Mbps, far above the UK average.
What speeds should residents expect?
Most homes sit on fibre with gigabit capability; a minority enjoy superfast speeds above 30 Mbps.
Neighbouring districts
Check your exact postcode
Every postcode in SE21 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