Ofcom data · 799 postcodes

SN4 broadband coverage — Swindon

Full-fibre, gigabit and superfast broadband availability across the SN4 postcode district, plus business broadband and leased-line options for Swindon.

Strong coverage

Superfast (30Mb+)

87.8%

Ultrafast (300Mb+)

79.7%

Gigabit-capable

79.3%

Below USO (10Mb)

1.6%

Check broadband at your exact SN4 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 SN4

Broadband availability in the SN4 postcode district (Swindon) is Strong — superfast is near-universal and gigabit is rolling out. Across the 799 postcodes Ofcom measures in SN4, superfast broadband (30 Mbit/s or faster) reaches 87.8% of premises and gigabit-capable lines are available to 79.3%.

Around 1.6% of premises in SN4 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 SN4

Postcode	Superfast	Gigabit
SN4 0AA	83.3%	83.3%
SN4 0AB	100%	100%
SN4 0AD	93.3%	93.3%
SN4 0AE	100%	100%
SN4 0AF	100%	100%
SN4 0AG	100%	100%
SN4 0AH	100%	100%
SN4 0AJ	100%	100%
SN4 0AL	100%	100%
SN4 0AN	94.4%	94.4%

Business broadband & leased lines in Swindon

Whether the SN4 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 SN4

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

SN3 — 94.6% gigabit 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 SN11 — 68.8% gigabit

See all Swindon (SN) broadband coverage ›

Frequently asked questions

What broadband speeds are available in the SN4 area (Swindon)?

In the SN4 area (Swindon), superfast broadband (30 Mbit/s+) is available to approximately 87.8% of premises and gigabit-capable broadband to around 79.3%, 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 SN4 area (Swindon)?

Gigabit-capable coverage in the SN4 area (Swindon) stands at about 79.3% 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 SN4 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 SN4 area (Swindon)?

Most UK providers serve the SN4 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.