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 SE23. 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
SE23 1AA Lewisham 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 97.3%
4G strong-coverage share is 100%, with 5G at 97.3% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
SE23 1AD Lewisham 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 97.3%
4G strong-coverage share is 100%, with 5G at 97.3% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
SE23 1AE Lewisham 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 97.3%
4G strong-coverage share is 100%, with 5G at 97.3% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
SE23 1AF Lewisham 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 97.3%
4G strong-coverage share is 100%, with 5G at 97.3% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
SE23 1AG Lewisham 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 97.3%
4G strong-coverage share is 100%, with 5G at 97.3% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
SE23 1AH Lewisham 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 97.3%
4G strong-coverage share is 100%, with 5G at 97.3% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
SE23 1AL Lewisham 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 97.3%
4G strong-coverage share is 100%, with 5G at 97.3% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
SE23 1AN Lewisham 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 97.3%
4G strong-coverage share is 100%, with 5G at 97.3% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
SE23 1AR Lewisham 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 97.3%
4G strong-coverage share is 100%, with 5G at 97.3% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
SE23 1AS Lewisham 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 97.3%
4G strong-coverage share is 100%, with 5G at 97.3% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
SE23 1AT Lewisham Broadband coverage is mixed
Gigabit availability is 3.3%, with 3.3% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.
 4G 100% · 5G 97.3%
4G strong-coverage share is 100%, with 5G at 97.3% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
SE23 1AU Lewisham 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 97.3%
4G strong-coverage share is 100%, with 5G at 97.3% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
SE23 1AY Lewisham Strong broadband coverage
Gigabit availability is 97%, with 97% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.
 4G 100% · 5G 97.3%
4G strong-coverage share is 100%, with 5G at 97.3% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
SE23 1AZ Lewisham 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 97.3%
4G strong-coverage share is 100%, with 5G at 97.3% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
SE23 1BB Lewisham 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 97.3%
4G strong-coverage share is 100%, with 5G at 97.3% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
SE23 1BD Lewisham 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 97.3%
4G strong-coverage share is 100%, with 5G at 97.3% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
SE23 1BE Lewisham 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 97.3%
4G strong-coverage share is 100%, with 5G at 97.3% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
SE23 1BF Lewisham 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 97.3%
4G strong-coverage share is 100%, with 5G at 97.3% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
SE23 1BQ Lewisham 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 97.3%
4G strong-coverage share is 100%, with 5G at 97.3% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
SE23 1BS Lewisham 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 97.3%
4G strong-coverage share is 100%, with 5G at 97.3% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
SE23 1BT Lewisham 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 97.3%
4G strong-coverage share is 100%, with 5G at 97.3% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
SE23 1BW Lewisham 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 97.3%
4G strong-coverage share is 100%, with 5G at 97.3% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
SE23 1BX Lewisham 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 97.3%
4G strong-coverage share is 100%, with 5G at 97.3% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
SE23 1BZ Lewisham Strong broadband coverage
Gigabit availability is 93.8%, with 93.8% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.
 4G 100% · 5G 97.3%
4G strong-coverage share is 100%, with 5G at 97.3% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
SE23 1DA Lewisham Strong broadband coverage
Gigabit availability is 90%, with 90% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.
 4G 100% · 5G 97.3%
4G strong-coverage share is 100%, with 5G at 97.3% 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.