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 W1C. 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
W1C 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
W1C 1AS 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
W1C 1AT 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
W1C 1AX 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
W1C 1AY 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
W1C 1AZ 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
W1C 1BA 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
W1C 1BB 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
W1C 1BE 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
W1C 1BF 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
W1C 1BG 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
W1C 1BH 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
W1C 1BQ 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
W1C 1BY 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
W1C 1DA 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
W1C 1DB 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
W1C 1DD 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
W1C 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
W1C 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
W1C 1DJ 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
W1C 1DL 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
W1C 1DN 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
W1C 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
W1C 1DR 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
W1C 1DS 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

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.