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 BT20. 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
BT20 3AA	ARDS AND NORTH DOWN	Strong broadband coverage Gigabit availability is 80%, with 80% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.7% · 5G 9.9% 4G strong-coverage share is 99.7%, with 5G at 9.9% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
BT20 3AB	ARDS AND NORTH DOWN	Strong broadband coverage Gigabit availability is 98.4%, with 98.4% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.7% · 5G 9.9% 4G strong-coverage share is 99.7%, with 5G at 9.9% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
BT20 3AD	ARDS AND NORTH DOWN	Strong broadband coverage Gigabit availability is 97.1%, with 97.1% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.7% · 5G 9.9% 4G strong-coverage share is 99.7%, with 5G at 9.9% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
BT20 3AE	ARDS AND NORTH DOWN	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.7% · 5G 9.9% 4G strong-coverage share is 99.7%, with 5G at 9.9% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
BT20 3AF	ARDS AND NORTH DOWN	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.7% · 5G 9.9% 4G strong-coverage share is 99.7%, with 5G at 9.9% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
BT20 3AG	ARDS AND NORTH DOWN	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.7% · 5G 9.9% 4G strong-coverage share is 99.7%, with 5G at 9.9% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
BT20 3AH	ARDS AND NORTH DOWN	Strong broadband coverage Gigabit availability is 98%, with 98% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.7% · 5G 9.9% 4G strong-coverage share is 99.7%, with 5G at 9.9% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
BT20 3AJ	ARDS AND NORTH DOWN	Partial connectivity coverage No current broadband summary row matched this postcode.	4G 99.7% · 5G 9.9% 4G strong-coverage share is 99.7%, with 5G at 9.9% in the current area-level summary.	Mobile year 2025
BT20 3AL	ARDS AND NORTH DOWN	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.7% · 5G 9.9% 4G strong-coverage share is 99.7%, with 5G at 9.9% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
BT20 3AQ	ARDS AND NORTH DOWN	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.7% · 5G 9.9% 4G strong-coverage share is 99.7%, with 5G at 9.9% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
BT20 3AU	ARDS AND NORTH DOWN	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.7% · 5G 9.9% 4G strong-coverage share is 99.7%, with 5G at 9.9% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
BT20 3AW	ARDS AND NORTH DOWN	Strong broadband coverage Gigabit availability is 96.3%, with 96.3% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.7% · 5G 9.9% 4G strong-coverage share is 99.7%, with 5G at 9.9% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
BT20 3AY	ARDS AND NORTH DOWN	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.7% · 5G 9.9% 4G strong-coverage share is 99.7%, with 5G at 9.9% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
BT20 3AZ	ARDS AND NORTH DOWN	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.7% · 5G 9.9% 4G strong-coverage share is 99.7%, with 5G at 9.9% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
BT20 3BA	ARDS AND NORTH DOWN	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.7% · 5G 9.9% 4G strong-coverage share is 99.7%, with 5G at 9.9% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
BT20 3BB	ARDS AND NORTH DOWN	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.7% · 5G 9.9% 4G strong-coverage share is 99.7%, with 5G at 9.9% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
BT20 3BD	ARDS AND NORTH DOWN	Strong broadband coverage Gigabit availability is 96.2%, with 96.2% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.7% · 5G 9.9% 4G strong-coverage share is 99.7%, with 5G at 9.9% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
BT20 3BE	ARDS AND NORTH DOWN	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.7% · 5G 9.9% 4G strong-coverage share is 99.7%, with 5G at 9.9% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
BT20 3BG	ARDS AND NORTH DOWN	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.7% · 5G 9.9% 4G strong-coverage share is 99.7%, with 5G at 9.9% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
BT20 3BH	ARDS AND NORTH DOWN	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.7% · 5G 9.9% 4G strong-coverage share is 99.7%, with 5G at 9.9% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
BT20 3BJ	ARDS AND NORTH DOWN	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.7% · 5G 9.9% 4G strong-coverage share is 99.7%, with 5G at 9.9% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
BT20 3BQ	ARDS AND NORTH DOWN	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.7% · 5G 9.9% 4G strong-coverage share is 99.7%, with 5G at 9.9% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
BT20 3BU	ARDS AND NORTH DOWN	Strong broadband coverage Gigabit availability is 75%, with 75% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.7% · 5G 9.9% 4G strong-coverage share is 99.7%, with 5G at 9.9% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
BT20 3BX	ARDS AND NORTH DOWN	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.7% · 5G 9.9% 4G strong-coverage share is 99.7%, with 5G at 9.9% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
BT20 3BY	ARDS AND NORTH DOWN	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.7% · 5G 9.9% 4G strong-coverage share is 99.7%, with 5G at 9.9% 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.