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 SL9. 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
SL9 0AA	Buckinghamshire	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 98.7% · 5G 29.1% 4G strong-coverage share is 98.7%, with 5G at 29.1% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SL9 0AB	Buckinghamshire	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 98.7% · 5G 29.1% 4G strong-coverage share is 98.7%, with 5G at 29.1% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SL9 0AD	Buckinghamshire	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 98.7% · 5G 29.1% 4G strong-coverage share is 98.7%, with 5G at 29.1% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SL9 0AE	Buckinghamshire	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 98.7% · 5G 29.1% 4G strong-coverage share is 98.7%, with 5G at 29.1% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SL9 0AF	Buckinghamshire	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 98.7% · 5G 29.1% 4G strong-coverage share is 98.7%, with 5G at 29.1% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SL9 0AG	Buckinghamshire	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 98.7% · 5G 29.1% 4G strong-coverage share is 98.7%, with 5G at 29.1% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SL9 0AH	Buckinghamshire	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 98.7% · 5G 29.1% 4G strong-coverage share is 98.7%, with 5G at 29.1% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SL9 0AJ	Buckinghamshire	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 98.7% · 5G 29.1% 4G strong-coverage share is 98.7%, with 5G at 29.1% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SL9 0AL	Buckinghamshire	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 98.7% · 5G 29.1% 4G strong-coverage share is 98.7%, with 5G at 29.1% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SL9 0AP	Buckinghamshire	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 98.7% · 5G 29.1% 4G strong-coverage share is 98.7%, with 5G at 29.1% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SL9 0AQ	Buckinghamshire	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 98.7% · 5G 29.1% 4G strong-coverage share is 98.7%, with 5G at 29.1% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SL9 0AR	Buckinghamshire	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 98.7% · 5G 29.1% 4G strong-coverage share is 98.7%, with 5G at 29.1% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SL9 0AS	Buckinghamshire	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 98.7% · 5G 29.1% 4G strong-coverage share is 98.7%, with 5G at 29.1% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SL9 0AT	Buckinghamshire	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 98.7% · 5G 29.1% 4G strong-coverage share is 98.7%, with 5G at 29.1% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SL9 0AU	Buckinghamshire	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 98.7% · 5G 29.1% 4G strong-coverage share is 98.7%, with 5G at 29.1% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SL9 0AW	Buckinghamshire	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 98.7% · 5G 29.1% 4G strong-coverage share is 98.7%, with 5G at 29.1% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SL9 0AX	Buckinghamshire	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 98.7% · 5G 29.1% 4G strong-coverage share is 98.7%, with 5G at 29.1% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SL9 0AY	Buckinghamshire	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 98.7% · 5G 29.1% 4G strong-coverage share is 98.7%, with 5G at 29.1% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SL9 0AZ	Buckinghamshire	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 98.7% · 5G 29.1% 4G strong-coverage share is 98.7%, with 5G at 29.1% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SL9 0BA	Buckinghamshire	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 98.7% · 5G 29.1% 4G strong-coverage share is 98.7%, with 5G at 29.1% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SL9 0BB	Buckinghamshire	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 98.7% · 5G 29.1% 4G strong-coverage share is 98.7%, with 5G at 29.1% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SL9 0BD	Buckinghamshire	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 98.7% · 5G 29.1% 4G strong-coverage share is 98.7%, with 5G at 29.1% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SL9 0BG	Buckinghamshire	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 98.7% · 5G 29.1% 4G strong-coverage share is 98.7%, with 5G at 29.1% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SL9 0BH	Buckinghamshire	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 98.7% · 5G 29.1% 4G strong-coverage share is 98.7%, with 5G at 29.1% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
SL9 0BJ	Buckinghamshire	Strong broadband coverage Gigabit availability is 100%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 98.7% · 5G 29.1% 4G strong-coverage share is 98.7%, with 5G at 29.1% 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.