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 SL5. 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
SL5 0AA Windsor and Maidenhead 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 76.9%
4G strong-coverage share is 100%, with 5G at 76.9% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
SL5 0AB Windsor and Maidenhead 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 76.9%
4G strong-coverage share is 100%, with 5G at 76.9% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
SL5 0AD Windsor and Maidenhead 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 76.9%
4G strong-coverage share is 100%, with 5G at 76.9% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
SL5 0AE Windsor and Maidenhead 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 76.9%
4G strong-coverage share is 100%, with 5G at 76.9% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
SL5 0AF Windsor and Maidenhead 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 76.9%
4G strong-coverage share is 100%, with 5G at 76.9% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
SL5 0AG Windsor and Maidenhead 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 76.9%
4G strong-coverage share is 100%, with 5G at 76.9% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
SL5 0AH Windsor and Maidenhead 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 76.9%
4G strong-coverage share is 100%, with 5G at 76.9% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
SL5 0AJ Windsor and Maidenhead Partial connectivity coverage
No current broadband summary row matched this postcode.
 4G 100% · 5G 76.9%
4G strong-coverage share is 100%, with 5G at 76.9% in the current area-level summary.
 Mobile year 2025
SL5 0AL Windsor and Maidenhead Strong broadband coverage
Gigabit availability is 95.5%, with 95.5% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.
 4G 100% · 5G 76.9%
4G strong-coverage share is 100%, with 5G at 76.9% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
SL5 0AN Windsor and Maidenhead 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 76.9%
4G strong-coverage share is 100%, with 5G at 76.9% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
SL5 0AP Windsor and Maidenhead 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 76.9%
4G strong-coverage share is 100%, with 5G at 76.9% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
SL5 0AR Windsor and Maidenhead 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 76.9%
4G strong-coverage share is 100%, with 5G at 76.9% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
SL5 0AS Windsor and Maidenhead 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 76.9%
4G strong-coverage share is 100%, with 5G at 76.9% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
SL5 0AT Windsor and Maidenhead 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 76.9%
4G strong-coverage share is 100%, with 5G at 76.9% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
SL5 0AU Windsor and Maidenhead 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 76.9%
4G strong-coverage share is 100%, with 5G at 76.9% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
SL5 0AW Windsor and Maidenhead 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 76.9%
4G strong-coverage share is 100%, with 5G at 76.9% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
SL5 0AX Windsor and Maidenhead 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 76.9%
4G strong-coverage share is 100%, with 5G at 76.9% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
SL5 0AY Windsor and Maidenhead 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 76.9%
4G strong-coverage share is 100%, with 5G at 76.9% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
SL5 0AZ Windsor and Maidenhead 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 76.9%
4G strong-coverage share is 100%, with 5G at 76.9% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
SL5 0BA Windsor and Maidenhead 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 76.9%
4G strong-coverage share is 100%, with 5G at 76.9% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
SL5 0BB Windsor and Maidenhead 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 76.9%
4G strong-coverage share is 100%, with 5G at 76.9% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
SL5 0BD Windsor and Maidenhead 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 76.9%
4G strong-coverage share is 100%, with 5G at 76.9% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
SL5 0BE Windsor and Maidenhead 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 76.9%
4G strong-coverage share is 100%, with 5G at 76.9% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
SL5 0BF Windsor and Maidenhead 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 76.9%
4G strong-coverage share is 100%, with 5G at 76.9% in the current area-level summary.
 Broadband year 2024 · Mobile year 2025
SL5 0BG Windsor and Maidenhead 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 76.9%
4G strong-coverage share is 100%, with 5G at 76.9% 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.