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 SN1. 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
SN1 1AE	Swindon	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.9% · 5G 43.5% 4G strong-coverage share is 99.9%, with 5G at 43.5% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SN1 1AF	Swindon	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.9% · 5G 43.5% 4G strong-coverage share is 99.9%, with 5G at 43.5% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SN1 1AG	Swindon	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.9% · 5G 43.5% 4G strong-coverage share is 99.9%, with 5G at 43.5% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SN1 1AH	Swindon	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.9% · 5G 43.5% 4G strong-coverage share is 99.9%, with 5G at 43.5% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SN1 1AL	Swindon	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.9% · 5G 43.5% 4G strong-coverage share is 99.9%, with 5G at 43.5% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SN1 1AP	Swindon	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.9% · 5G 43.5% 4G strong-coverage share is 99.9%, with 5G at 43.5% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SN1 1AQ	Swindon	Partial connectivity coverage No current broadband summary row matched this postcode.	4G 99.9% · 5G 43.5% 4G strong-coverage share is 99.9%, with 5G at 43.5% in the current area-level summary.	Mobile year 2025
SN1 1BA	Swindon	Broadband coverage is mixed Gigabit availability is 10%, with 10% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.9% · 5G 43.5% 4G strong-coverage share is 99.9%, with 5G at 43.5% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SN1 1BB	Swindon	Strong broadband coverage Gigabit availability is 82.4%, with 82.4% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.9% · 5G 43.5% 4G strong-coverage share is 99.9%, with 5G at 43.5% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SN1 1BD	Swindon	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 99.9% · 5G 43.5% 4G strong-coverage share is 99.9%, with 5G at 43.5% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SN1 1BE	Swindon	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.9% · 5G 43.5% 4G strong-coverage share is 99.9%, with 5G at 43.5% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SN1 1BF	Swindon	Broadband coverage is mixed Gigabit availability is 66.7%, with 66.7% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.9% · 5G 43.5% 4G strong-coverage share is 99.9%, with 5G at 43.5% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SN1 1BL	Swindon	Strong broadband coverage Gigabit availability is 75%, with 75% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.9% · 5G 43.5% 4G strong-coverage share is 99.9%, with 5G at 43.5% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SN1 1BP	Swindon	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 99.9% · 5G 43.5% 4G strong-coverage share is 99.9%, with 5G at 43.5% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SN1 1BT	Swindon	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.9% · 5G 43.5% 4G strong-coverage share is 99.9%, with 5G at 43.5% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SN1 1BU	Swindon	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.9% · 5G 43.5% 4G strong-coverage share is 99.9%, with 5G at 43.5% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SN1 1BY	Swindon	Partial connectivity coverage No current broadband summary row matched this postcode.	4G 99.9% · 5G 43.5% 4G strong-coverage share is 99.9%, with 5G at 43.5% in the current area-level summary.	Mobile year 2025
SN1 1DA	Swindon	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 99.9% · 5G 43.5% 4G strong-coverage share is 99.9%, with 5G at 43.5% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SN1 1DG	Swindon	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 99.9% · 5G 43.5% 4G strong-coverage share is 99.9%, with 5G at 43.5% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SN1 1DH	Swindon	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.9% · 5G 43.5% 4G strong-coverage share is 99.9%, with 5G at 43.5% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SN1 1DP	Swindon	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.9% · 5G 43.5% 4G strong-coverage share is 99.9%, with 5G at 43.5% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SN1 1DQ	Swindon	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.9% · 5G 43.5% 4G strong-coverage share is 99.9%, with 5G at 43.5% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SN1 1DR	Swindon	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.9% · 5G 43.5% 4G strong-coverage share is 99.9%, with 5G at 43.5% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SN1 1DS	Swindon	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.9% · 5G 43.5% 4G strong-coverage share is 99.9%, with 5G at 43.5% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SN1 1DT	Swindon	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.9% · 5G 43.5% 4G strong-coverage share is 99.9%, with 5G at 43.5% 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.