Broadband and mobile checker

Search a postcode or postcode area against the current live broadband and mobile coverage seams.

Source: Ofcom broadband and mobile coverage. Coverage: Live connectivity rows matched postcode area SW1V. Broadband is postcode level and mobile coverage remains area-level only in the current public seam.. Freshness: Broadband year 2024 · Mobile year 2025. Matches: 25.
Postcode Area Broadband Mobile Freshness
SW1V 1AA Westminster Strong broadband coverage
Gigabit availability is 90.1%, with 90.1% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.
 4G 100% · 5G 100%
4G strong-coverage share is 100%, with 5G at 100% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
SW1V 1AD Westminster Partial connectivity coverage
No current broadband summary row matched this postcode.
 4G 100% · 5G 100%
4G strong-coverage share is 100%, with 5G at 100% in the current area-level summary.
 Mobile year 2025
SW1V 1AE Westminster Strong broadband coverage
Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.
 4G 100% · 5G 100%
4G strong-coverage share is 100%, with 5G at 100% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
SW1V 1AF Westminster Strong broadband coverage
Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.
 4G 100% · 5G 100%
4G strong-coverage share is 100%, with 5G at 100% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
SW1V 1AG Westminster Strong broadband coverage
Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.
 4G 100% · 5G 100%
4G strong-coverage share is 100%, with 5G at 100% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
SW1V 1AJ Westminster Strong broadband coverage
Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.
 4G 100% · 5G 100%
4G strong-coverage share is 100%, with 5G at 100% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
SW1V 1AN Westminster Broadband coverage is mixed
Gigabit availability is 7.1%, with 7.1% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.
 4G 100% · 5G 100%
4G strong-coverage share is 100%, with 5G at 100% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
SW1V 1AP Westminster Broadband coverage is mixed
Gigabit availability is 0%, with 0% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.
 4G 100% · 5G 100%
4G strong-coverage share is 100%, with 5G at 100% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
SW1V 1AU Westminster Strong broadband coverage
Gigabit availability is 92.3%, with 92.3% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.
 4G 100% · 5G 100%
4G strong-coverage share is 100%, with 5G at 100% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
SW1V 1BB Westminster Broadband coverage is mixed
Gigabit availability is 57.1%, with 57.1% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.
 4G 100% · 5G 100%
4G strong-coverage share is 100%, with 5G at 100% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
SW1V 1BP Westminster Broadband coverage is mixed
Gigabit availability is 0%, with 0% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.
 4G 100% · 5G 100%
4G strong-coverage share is 100%, with 5G at 100% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
SW1V 1BS Westminster Broadband coverage is mixed
Gigabit availability is 9.1%, with 9.1% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.
 4G 100% · 5G 100%
4G strong-coverage share is 100%, with 5G at 100% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
SW1V 1BX Westminster Partial connectivity coverage
No current broadband summary row matched this postcode.
 4G 100% · 5G 100%
4G strong-coverage share is 100%, with 5G at 100% in the current area-level summary.
 Mobile year 2025
SW1V 1BZ Westminster Strong broadband coverage
Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.
 4G 100% · 5G 100%
4G strong-coverage share is 100%, with 5G at 100% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
SW1V 1DE Westminster Strong broadband coverage
Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.
 4G 100% · 5G 100%
4G strong-coverage share is 100%, with 5G at 100% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
SW1V 1DL Westminster Strong broadband coverage
Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.
 4G 100% · 5G 100%
4G strong-coverage share is 100%, with 5G at 100% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
SW1V 1DN Westminster Broadband coverage is mixed
Gigabit availability is 66.7%, with 66.7% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.
 4G 100% · 5G 100%
4G strong-coverage share is 100%, with 5G at 100% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
SW1V 1DP Westminster Strong broadband coverage
Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.
 4G 100% · 5G 100%
4G strong-coverage share is 100%, with 5G at 100% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
SW1V 1DT Westminster Strong broadband coverage
Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.
 4G 100% · 5G 100%
4G strong-coverage share is 100%, with 5G at 100% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
SW1V 1DU Westminster Broadband coverage is mixed
Gigabit availability is 0%, with 0% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.
 4G 100% · 5G 100%
4G strong-coverage share is 100%, with 5G at 100% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
SW1V 1DW Westminster Broadband coverage is mixed
Gigabit availability is 28%, with 28% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.
 4G 100% · 5G 100%
4G strong-coverage share is 100%, with 5G at 100% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
SW1V 1DX Westminster Strong broadband coverage
Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.
 4G 100% · 5G 100%
4G strong-coverage share is 100%, with 5G at 100% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
SW1V 1DZ Westminster Broadband coverage is mixed
Gigabit availability is 60%, with 60% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.
 4G 100% · 5G 100%
4G strong-coverage share is 100%, with 5G at 100% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
SW1V 1EJ Westminster Broadband coverage is mixed
Gigabit availability is 21.4%, with 21.4% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.
 4G 100% · 5G 100%
4G strong-coverage share is 100%, with 5G at 100% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
SW1V 1EL Westminster Strong broadband coverage
Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.
 4G 100% · 5G 100%
4G strong-coverage share is 100%, with 5G at 100% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025

Known caveats

  • Mobile coverage is still served at area level in the public seam, so treat it as a shortlist signal rather than a street-level verdict.
  • Connectivity rows do not replace a final provider and address-level availability check before you commit to a property.
  • If you search a postcode area, neighbouring postcode rows can differ enough that the exact postcode follow-up still matters.