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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 SA1. 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
SA1 1AA	Swansea	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 99% · 5G 19.1% 4G strong-coverage share is 99%, with 5G at 19.1% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SA1 1AD	Swansea	Partial connectivity coverage No current broadband summary row matched this postcode.	4G 99% · 5G 19.1% 4G strong-coverage share is 99%, with 5G at 19.1% in the current area-level summary.	Mobile year 2025
SA1 1AF	Swansea	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99% · 5G 19.1% 4G strong-coverage share is 99%, with 5G at 19.1% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SA1 1AU	Swansea	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99% · 5G 19.1% 4G strong-coverage share is 99%, with 5G at 19.1% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SA1 1AZ	Swansea	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99% · 5G 19.1% 4G strong-coverage share is 99%, with 5G at 19.1% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SA1 1BP	Swansea	Partial connectivity coverage No current broadband summary row matched this postcode.	4G 99% · 5G 19.1% 4G strong-coverage share is 99%, with 5G at 19.1% in the current area-level summary.	Mobile year 2025
SA1 1DE	Swansea	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99% · 5G 19.1% 4G strong-coverage share is 99%, with 5G at 19.1% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SA1 1DF	Swansea	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99% · 5G 19.1% 4G strong-coverage share is 99%, with 5G at 19.1% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SA1 1DG	Swansea	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99% · 5G 19.1% 4G strong-coverage share is 99%, with 5G at 19.1% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SA1 1DP	Swansea	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99% · 5G 19.1% 4G strong-coverage share is 99%, with 5G at 19.1% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SA1 1DW	Swansea	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99% · 5G 19.1% 4G strong-coverage share is 99%, with 5G at 19.1% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SA1 1DX	Swansea	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99% · 5G 19.1% 4G strong-coverage share is 99%, with 5G at 19.1% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SA1 1DY	Swansea	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99% · 5G 19.1% 4G strong-coverage share is 99%, with 5G at 19.1% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SA1 1DZ	Swansea	Broadband coverage is mixed Gigabit availability is 38.5%, with 38.5% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99% · 5G 19.1% 4G strong-coverage share is 99%, with 5G at 19.1% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SA1 1EB	Swansea	Broadband coverage is mixed Gigabit availability is 20%, with 20% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99% · 5G 19.1% 4G strong-coverage share is 99%, with 5G at 19.1% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SA1 1ED	Swansea	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99% · 5G 19.1% 4G strong-coverage share is 99%, with 5G at 19.1% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SA1 1EE	Swansea	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99% · 5G 19.1% 4G strong-coverage share is 99%, with 5G at 19.1% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SA1 1EF	Swansea	Broadband coverage is mixed Gigabit availability is 42.9%, with 42.9% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99% · 5G 19.1% 4G strong-coverage share is 99%, with 5G at 19.1% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SA1 1EG	Swansea	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99% · 5G 19.1% 4G strong-coverage share is 99%, with 5G at 19.1% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SA1 1EH	Swansea	Partial connectivity coverage No current broadband summary row matched this postcode.	4G 99% · 5G 19.1% 4G strong-coverage share is 99%, with 5G at 19.1% in the current area-level summary.	Mobile year 2025
SA1 1EJ	Swansea	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99% · 5G 19.1% 4G strong-coverage share is 99%, with 5G at 19.1% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SA1 1EP	Swansea	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99% · 5G 19.1% 4G strong-coverage share is 99%, with 5G at 19.1% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SA1 1EQ	Swansea	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99% · 5G 19.1% 4G strong-coverage share is 99%, with 5G at 19.1% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SA1 1FY	Swansea	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 99% · 5G 19.1% 4G strong-coverage share is 99%, with 5G at 19.1% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SA1 1FZ	Swansea	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99% · 5G 19.1% 4G strong-coverage share is 99%, with 5G at 19.1% 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.

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