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 BN18. 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
BN18 0AA	Arun	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.8% · 5G 35.7% 4G strong-coverage share is 99.8%, with 5G at 35.7% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
BN18 0AB	Arun	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 99.8% · 5G 35.7% 4G strong-coverage share is 99.8%, with 5G at 35.7% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
BN18 0AD	Arun	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 99.8% · 5G 35.7% 4G strong-coverage share is 99.8%, with 5G at 35.7% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
BN18 0AE	Arun	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 99.8% · 5G 35.7% 4G strong-coverage share is 99.8%, with 5G at 35.7% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
BN18 0AF	Arun	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.8% · 5G 35.7% 4G strong-coverage share is 99.8%, with 5G at 35.7% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
BN18 0AG	Arun	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 99.8% · 5G 35.7% 4G strong-coverage share is 99.8%, with 5G at 35.7% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
BN18 0AH	Arun	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 99.8% · 5G 35.7% 4G strong-coverage share is 99.8%, with 5G at 35.7% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
BN18 0AJ	Arun	Below-USO risk present Gigabit availability is 0%, with 0% of premises at at least 300 Mbps and 66.7% below the Universal Service Obligation.	4G 99.8% · 5G 35.7% 4G strong-coverage share is 99.8%, with 5G at 35.7% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
BN18 0AL	Arun	Below-USO risk present Gigabit availability is 0%, with 0% of premises at at least 300 Mbps and 100% below the Universal Service Obligation.	4G 99.8% · 5G 35.7% 4G strong-coverage share is 99.8%, with 5G at 35.7% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
BN18 0AN	Arun	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 99.8% · 5G 35.7% 4G strong-coverage share is 99.8%, with 5G at 35.7% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
BN18 0AP	Arun	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 99.8% · 5G 35.7% 4G strong-coverage share is 99.8%, with 5G at 35.7% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
BN18 0AQ	Arun	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 99.8% · 5G 35.7% 4G strong-coverage share is 99.8%, with 5G at 35.7% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
BN18 0AR	Arun	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 99.8% · 5G 35.7% 4G strong-coverage share is 99.8%, with 5G at 35.7% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
BN18 0AS	Arun	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 99.8% · 5G 35.7% 4G strong-coverage share is 99.8%, with 5G at 35.7% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
BN18 0AT	Arun	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.8% · 5G 35.7% 4G strong-coverage share is 99.8%, with 5G at 35.7% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
BN18 0AU	Arun	Broadband coverage is mixed Gigabit availability is 33.3%, with 33.3% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.8% · 5G 35.7% 4G strong-coverage share is 99.8%, with 5G at 35.7% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
BN18 0AW	Arun	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 99.8% · 5G 35.7% 4G strong-coverage share is 99.8%, with 5G at 35.7% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
BN18 0AX	Arun	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 99.8% · 5G 35.7% 4G strong-coverage share is 99.8%, with 5G at 35.7% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
BN18 0AY	Arun	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.8% · 5G 35.7% 4G strong-coverage share is 99.8%, with 5G at 35.7% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
BN18 0AZ	Arun	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.8% · 5G 35.7% 4G strong-coverage share is 99.8%, with 5G at 35.7% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
BN18 0BA	Arun	Broadband coverage is mixed Gigabit availability is 19.5%, with 19.5% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.8% · 5G 35.7% 4G strong-coverage share is 99.8%, with 5G at 35.7% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
BN18 0BB	Arun	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 99.8% · 5G 35.7% 4G strong-coverage share is 99.8%, with 5G at 35.7% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
BN18 0BD	Arun	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 99.8% · 5G 35.7% 4G strong-coverage share is 99.8%, with 5G at 35.7% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
BN18 0BE	Arun	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.8% · 5G 35.7% 4G strong-coverage share is 99.8%, with 5G at 35.7% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
BN18 0BF	Arun	Broadband coverage is mixed Gigabit availability is 4.8%, with 4.8% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 99.8% · 5G 35.7% 4G strong-coverage share is 99.8%, with 5G at 35.7% 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.