SW1A broadband and area guide
Ofcom coverage, connection speeds, house prices and local data for 124 postcodes across 3 sectors in Westminster.
Full fibre
79%
Gigabit
79%
Superfast
79%
Postcodes
124
SW1A covers 124 postcodes in Westminster's heart. Gigabit-capable networks reach nearly four in five premises, though coverage remains patchier than neighbouring codes.
Broadband speeds in SW1A
Share of SW1A premises by the fastest download speed available, averaged across all 124 postcodes in the district.
Gigabit availability is 78.7%, which is well above the national full fibre average of around 69% but reflects Westminster's postcode diversity. Three-quarters of premises can access 300 Mbps or faster, while virtually no premises fall short of the Universal Service Obligation's 10 Mbps minimum. The remaining 21.3% of postcodes have superfast connectivity at 30 Mbps or higher. These are overwhelmingly commercial addresses and the Westminster postal sorting office rather than residential homes. The mix of government buildings, businesses and postal infrastructure explains why gigabit hasn't reached absolute saturation. Infrastructure investment has nevertheless ensured that every postcode meets basic USO thresholds and most can access modern speeds.
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
SW1A splits into 3 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 |
|---|---|---|---|---|
| SW1A 0 | 2 | 50% | 50% | 50% |
| SW1A 1 | 57 | 73% | 73% | 73% |
| SW1A 2 | 65 | 85% | 85% | 85% |
All SW1A 1 postcodes (57)
All SW1A 2 postcodes (65)
Best deals
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Living in Westminster
Most premises can sustain multiple simultaneous 4K video streams, making speed constraints unlikely to factor into a household's move decision here. The postcode's mixed commercial and residential character means published house price data is unavailable, though purchasing power in central Westminster is well established.
Crime per month
14
Average recorded crimes per local statistical area
Remote worker score
91/100
Connectivity and amenities for home working
Family score
69/100
Schools, safety and family amenities
Value score
50/100
What you get for the local price level
SW1A broadband FAQs
Does every address in SW1A have gigabit internet?
No. 78.7% of postcodes have gigabit-capable connections, but one in five remain at superfast speeds.
Are there any slow broadband premises in SW1A?
No addresses fall below the 10 Mbps minimum. The postcode is fully covered by the Universal Service Obligation.
Why is gigabit availability lower in SW1A than SW1Y?
Westminster's central postcodes are a mix of residential, retail and government buildings. Different properties have different infrastructure histories, leading to variation across outward codes.
Should I check which provider serves a specific address?
Yes. Although nine out of ten premises can access superfast speeds, the specific providers and technologies vary by building.
Neighbouring districts
Check your exact postcode
Every postcode in SW1A 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