SN1 broadband and area guide
Ofcom coverage, connection speeds, house prices and local data for 743 postcodes across 6 sectors in Swindon.
Full fibre
0%
Gigabit
96%
Superfast
99%
Postcodes
743
SN1 is Swindon's premier outward code, with 95.5% gigabit availability across 743 postcodes. This is among the UK's strongest performers.
Broadband speeds in SN1
Share of SN1 premises by the fastest download speed available, averaged across all 743 postcodes in the district.
Gigabit reaches 95.5%, nearly universal cable coverage across Swindon's core. Superfast is 98.5%, exceeding UK norms significantly. The speed profile is heavily skewed toward the high end: 95.7% of postcodes sit at 300+ Mbps, 2.7% at 30 to 300 Mbps, and 0.3% below 10 Mbps. This distribution is remarkable and reflects extensive cable investment prioritised in the urban area. Cable networks provide all gigabit capacity; no full fibre is recorded. Nearly every household enjoys a choice among gigabit providers rather than negotiating for basic service access. In SN1, mature infrastructure investment has made speed a non-issue for most residents.
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
SN1 splits into 6 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 |
|---|---|---|---|---|
| SN1 1 | 79 | 95% | 0% | 94% |
| SN1 2 | 156 | 99% | 0% | 98% |
| SN1 3 | 154 | 100% | 0% | 98% |
| SN1 4 | 150 | 99% | TBC | 90% |
| SN1 5 | 126 | 99% | 0% | 99% |
| SN1 7 | 78 | 96% | 0% | 94% |
All SN1 1 postcodes (79)
All SN1 2 postcodes (156)
All SN1 3 postcodes (154)
All SN1 4 postcodes (150)
All SN1 5 postcodes (126)
All SN1 7 postcodes (78)
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Living in Swindon
SN1's 743 postcodes encompass Swindon's core urban and suburban belt. The near-universal gigabit indicates prioritised infrastructure investment in the town centre.
Remote worker score
55/100
Connectivity and amenities for home working
Family score
50/100
Schools, safety and family amenities
Value score
50/100
What you get for the local price level
SN1 broadband FAQs
Why is SN1 so well-connected?
Cable networks are well-established and widely deployed. Swindon's size and density made economic investment feasible across most postcodes.
How much of SN1 gets gigabit?
95.5%, nearly every postcode. Only 4.5% fall below gigabit, and those reach 30+ Mbps.
Is broadband a constraint here?
Not for 99.7% of postcodes. Speed is not the limiting factor in SN1; choice is purely commercial.
No fibre?
No full fibre is recorded. Cable is the sole gigabit infrastructure.
Neighbouring districts
Check your exact postcode
Every postcode in SN1 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