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 SW1P. 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
SW1P 1AA 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
SW1P 1AB 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
SW1P 1AE 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
SW1P 1AG Wandsworth Partial connectivity coverage
No current broadband summary row matched this postcode.
 4G 100% · 5G 98.1%
4G strong-coverage share is 100%, with 5G at 98.1% in the current area-level summary.
 Mobile year 2025
SW1P 1AU 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
SW1P 1BB Westminster Strong broadband coverage
Gigabit availability is 85.7%, with 85.7% 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
SW1P 1BD Wandsworth Partial connectivity coverage
No current broadband summary row matched this postcode.
 4G 100% · 5G 98.1%
4G strong-coverage share is 100%, with 5G at 98.1% in the current area-level summary.
 Mobile year 2025
SW1P 1BE 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
SW1P 1BJ Wandsworth Partial connectivity coverage
No current broadband summary row matched this postcode.
 4G 100% · 5G 98.1%
4G strong-coverage share is 100%, with 5G at 98.1% in the current area-level summary.
 Mobile year 2025
SW1P 1BS 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
SW1P 1BT 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
SW1P 1BU 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
SW1P 1DA Wandsworth Partial connectivity coverage
No current broadband summary row matched this postcode.
 4G 100% · 5G 98.1%
4G strong-coverage share is 100%, with 5G at 98.1% in the current area-level summary.
 Mobile year 2025
SW1P 1DB Wandsworth Partial connectivity coverage
No current broadband summary row matched this postcode.
 4G 100% · 5G 98.1%
4G strong-coverage share is 100%, with 5G at 98.1% in the current area-level summary.
 Mobile year 2025
SW1P 1DE 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
SW1P 1DH 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
SW1P 1DL Wandsworth Partial connectivity coverage
No current broadband summary row matched this postcode.
 4G 100% · 5G 98.1%
4G strong-coverage share is 100%, with 5G at 98.1% in the current area-level summary.
 Mobile year 2025
SW1P 1DN 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
SW1P 1DP 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
SW1P 1DQ Wandsworth Partial connectivity coverage
No current broadband summary row matched this postcode.
 4G 100% · 5G 98.1%
4G strong-coverage share is 100%, with 5G at 98.1% in the current area-level summary.
 Mobile year 2025
SW1P 1DR 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
SW1P 1DS 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
SW1P 1DT 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
SW1P 1DU 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
SW1P 1DW 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.