South West London broadband coverage (SW)
Full-fibre, gigabit and superfast availability across every SW postcode district in Greater London — plus business broadband and leased lines.
Excellent coverage
Superfast (30Mb+)
91.8%
Ultrafast (300Mb+)
82.8%
Gigabit-capable
80.9%
Below USO (10Mb)
—
Check your exact SW postcode
Area figures average a whole postcode region — get the precise availability, full-fibre status and mobile signal for your address.
Broadband across the SW area
The SW postcode area covers South West London and the surrounding Greater London region, spanning 27 outward-code districts. Overall fixed-broadband provision across SW is excellent: superfast reaches about 91.8% of premises and gigabit-capable connectivity is available to roughly 80.9%.
Availability is never uniform across a whole postcode area — city-centre SW districts are typically further ahead on full fibre than outlying towns and rural fringes. Use the district breakdown below to see how each SW outcode compares, then check an exact postcode for the definitive answer.
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SW districts compared
Each SW outward code ranked by size. Click a district for its full breakdown and a postcode-level check.
| District | Area | Superfast | Gigabit |
|---|---|---|---|
| SW19 | Merton | 98% | 80% |
| SW11 | Wandsworth | 95.9% | 83.2% |
| SW6 | Hammersmith and Fulham | 97.5% | 80% |
| SW16 | Croydon | 98.4% | 87.8% |
| SW15 | Kingston upon Thames | 97.6% | 54.3% |
| SW18 | Merton | 97.5% | 86.9% |
| SW2 | Lambeth | 99% | 89.3% |
| SW17 | Merton | 98.3% | 90.1% |
| SW9 | Lambeth | 97.9% | 88.7% |
| SW4 | Lambeth | 99.2% | 87.1% |
| SW3 | Kensington and Chelsea | 97% | 88.3% |
| SW8 | Lambeth | 95.1% | 80.5% |
| SW7 | Kensington and Chelsea | 92.2% | 82.8% |
| SW12 | Lambeth | 99.4% | 88.6% |
| SW1V | Wandsworth | 95.8% | 83.1% |
| SW20 | Kingston upon Thames | 99.4% | 89.3% |
| SW1P | Wandsworth | 85% | 78.8% |
| SW10 | Hammersmith and Fulham | 99.5% | 89% |
| SW1X | Kensington and Chelsea | 86% | 79.2% |
| SW13 | Richmond upon Thames | 98.5% | 85.6% |
| SW14 | Richmond upon Thames | 99% | 83.6% |
| SW1W | Kensington and Chelsea | 87.8% | 72.1% |
| SW5 | Kensington and Chelsea | 98.6% | 93.1% |
| SW1Y | Wandsworth | 83.7% | 83.7% |
| SW1A | Wandsworth | 35.5% | 35.5% |
| SW1H | Wandsworth | 82.8% | 82.8% |
| SW1E | Wandsworth | 64.4% | 61% |
Business broadband & leased lines in South West London
Connection Technologies arranges business broadband, full-fibre (FTTP) and leased lines right across the SW area. Where gigabit full fibre is live we quote ultrafast symmetric connections; everywhere else a leased line still guarantees the speed and SLA your business needs.
Get a business broadband quote in South West London
Free and no obligation — matched to what's actually available at your postcode.
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Frequently asked questions
What broadband speeds are available in the SW postcode area (South West London)?
Can I get full-fibre or gigabit broadband in the SW postcode area (South West London)?
How do I check broadband at my exact address in the SW postcode area (South West London)?
Who provides business broadband in the SW postcode area (South West London)?
Broadband availability data © 2026 Ofcom (Connected Nations), licensed under the Open Government Licence v3.0. Figures are area averages and predictions; availability at an individual address may differ — always confirm with a postcode-level check.