Ofcom data · 1,240 postcodes

SN3 broadband coverage — Swindon

Full-fibre, gigabit and superfast broadband availability across the SN3 postcode district, plus business broadband and leased-line options for Swindon.

Excellent coverage

Superfast (30Mb+)

96.4%

Ultrafast (300Mb+)

94.6%

Gigabit-capable

94.6%

Below USO (10Mb)

0.2%

Check broadband at your exact SN3 postcode

District figures are an average — get the precise availability, full-fibre status and mobile signal for your address.

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Broadband in SN3

Broadband availability in the SN3 postcode district (Swindon) is Excellent — gigabit-capable full fibre is widely available. Across the 1,240 postcodes Ofcom measures in SN3, superfast broadband (30 Mbit/s or faster) reaches 96.4% of premises and gigabit-capable lines are available to 94.6%.

Around 0.2% of premises in SN3 fall below the Universal Service Obligation (a minimum of 10 Mbit/s download and 1 Mbit/s upload), so the overwhelming majority of homes and businesses here can already order a decent fixed line. For a business that depends on its connection, the figures that matter most are gigabit and full-fibre availability — the symmetric, low-contention services we quote leased lines and FTTP against.

Sample postcodes in SN3

Postcode	Superfast	Gigabit
SN3 0AD	100%	100%
SN3 0AE	100%	100%
SN3 0AF	100%	100%
SN3 0AJ	100%	100%
SN3 0AL	100%	100%
SN3 0AN	100%	100%
SN3 0AP	100%	100%
SN3 0AQ	100%	100%
SN3 0AS	100%	100%
SN3 1AA	100%	100%

Business broadband & leased lines in Swindon

Whether the SN3 district has full fibre yet or not, we can connect your business. Where FTTP and gigabit are live we quote ultrafast full-fibre; where they aren't, a leased line still delivers guaranteed, symmetric speeds with an SLA. We also handle mobile coverage and VoIP for the same site.

Get a business broadband quote for SN3

Free, no obligation — full fibre, leased line or FTTC, matched to what's actually available at your postcode.

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Nearby SN districts

SN15 — 62% gigabit SN10 — 40.3% gigabit SN14 — 64.1% gigabit SN8 — 31.6% gigabit SN5 — 91.6% gigabit SN2 — 98.2% gigabit SN25 — 96.6% gigabit SN12 — 60.4% gigabit SN4 — 79.3% gigabit SN11 — 68.8% gigabit

See all Swindon (SN) broadband coverage ›

Frequently asked questions

What broadband speeds are available in the SN3 area (Swindon)?

In the SN3 area (Swindon), superfast broadband (30 Mbit/s+) is available to approximately 96.4% of premises and gigabit-capable broadband to around 94.6%, based on Ofcom Connected Nations data. Exact availability varies by postcode — enter your full postcode in our checker for a precise result.

Can I get full-fibre or gigabit broadband in the SN3 area (Swindon)?

Gigabit-capable coverage in the SN3 area (Swindon) stands at about 94.6% of premises. Where gigabit and full-fibre (FTTP) are live, businesses can order symmetric, low-latency connections — ideal for cloud, VoIP and multi-site working. If full fibre hasn't reached your premises yet, a leased line can still deliver guaranteed gigabit speeds.

How do I check broadband at my exact address in the SN3 area (Swindon)?

Use the free broadband postcode checker on this page: enter your postcode to see fixed-broadband availability, gigabit/full-fibre coverage and mobile signal for all four networks at that location, sourced from official Ofcom data.

Who provides business broadband in the SN3 area (Swindon)?

Most UK providers serve the SN3 area (Swindon) over the Openreach and (where present) CityFibre or Virgin Media networks. Connection Technologies arranges business broadband, full-fibre (FTTP) and leased lines across the area — request a quote to compare options for your postcode.

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.