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 SG1. 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
SG1 1AA	Stevenage	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 71.3% 4G strong-coverage share is 100%, with 5G at 71.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SG1 1AB	Stevenage	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 71.3% 4G strong-coverage share is 100%, with 5G at 71.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SG1 1AF	Stevenage	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 71.3% 4G strong-coverage share is 100%, with 5G at 71.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SG1 1AP	Stevenage	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 71.3% 4G strong-coverage share is 100%, with 5G at 71.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SG1 1AR	Stevenage	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 71.3% 4G strong-coverage share is 100%, with 5G at 71.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SG1 1AS	Stevenage	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 71.3% 4G strong-coverage share is 100%, with 5G at 71.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SG1 1AT	Stevenage	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 71.3% 4G strong-coverage share is 100%, with 5G at 71.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SG1 1AU	Stevenage	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 71.3% 4G strong-coverage share is 100%, with 5G at 71.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SG1 1AW	Stevenage	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 71.3% 4G strong-coverage share is 100%, with 5G at 71.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SG1 1AX	Stevenage	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 71.3% 4G strong-coverage share is 100%, with 5G at 71.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SG1 1AY	Stevenage	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 71.3% 4G strong-coverage share is 100%, with 5G at 71.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SG1 1AZ	Stevenage	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 71.3% 4G strong-coverage share is 100%, with 5G at 71.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SG1 1BF	Stevenage	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 71.3% 4G strong-coverage share is 100%, with 5G at 71.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SG1 1BH	Stevenage	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 71.3% 4G strong-coverage share is 100%, with 5G at 71.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SG1 1BL	Stevenage	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 71.3% 4G strong-coverage share is 100%, with 5G at 71.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SG1 1BP	Stevenage	Broadband coverage is mixed Gigabit availability is 8.3%, with 8.3% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 100% · 5G 71.3% 4G strong-coverage share is 100%, with 5G at 71.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SG1 1BS	Stevenage	Broadband coverage is mixed Gigabit availability is 6.3%, with 6.3% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 100% · 5G 71.3% 4G strong-coverage share is 100%, with 5G at 71.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SG1 1BX	Stevenage	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 71.3% 4G strong-coverage share is 100%, with 5G at 71.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SG1 1BY	Stevenage	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 71.3% 4G strong-coverage share is 100%, with 5G at 71.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SG1 1DA	Stevenage	Broadband coverage is mixed Gigabit availability is 6.7%, with 6.7% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 100% · 5G 71.3% 4G strong-coverage share is 100%, with 5G at 71.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SG1 1DB	Stevenage	Broadband coverage is mixed Gigabit availability is 6.3%, with 6.3% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 100% · 5G 71.3% 4G strong-coverage share is 100%, with 5G at 71.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SG1 1DD	Stevenage	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 71.3% 4G strong-coverage share is 100%, with 5G at 71.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SG1 1DG	Stevenage	Partial connectivity coverage No current broadband summary row matched this postcode.	4G 100% · 5G 71.3% 4G strong-coverage share is 100%, with 5G at 71.3% in the current area-level summary.	Mobile year 2025
SG1 1DH	Stevenage	Broadband coverage is mixed Gigabit availability is 5.3%, with 5.3% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 100% · 5G 71.3% 4G strong-coverage share is 100%, with 5G at 71.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SG1 1DJ	Stevenage	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 71.3% 4G strong-coverage share is 100%, with 5G at 71.3% 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.