Tools

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 S43. 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
S43 1AA	Chesterfield	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 54% 4G strong-coverage share is 100%, with 5G at 54% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
S43 1AB	Chesterfield	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 54% 4G strong-coverage share is 100%, with 5G at 54% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
S43 1AD	Chesterfield	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 54% 4G strong-coverage share is 100%, with 5G at 54% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
S43 1AE	Chesterfield	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 54% 4G strong-coverage share is 100%, with 5G at 54% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
S43 1AF	Chesterfield	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 54% 4G strong-coverage share is 100%, with 5G at 54% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
S43 1AG	Chesterfield	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 54% 4G strong-coverage share is 100%, with 5G at 54% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
S43 1AH	Chesterfield	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 54% 4G strong-coverage share is 100%, with 5G at 54% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
S43 1AJ	Chesterfield	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 54% 4G strong-coverage share is 100%, with 5G at 54% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
S43 1AL	Chesterfield	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 54% 4G strong-coverage share is 100%, with 5G at 54% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
S43 1AN	Chesterfield	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 54% 4G strong-coverage share is 100%, with 5G at 54% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
S43 1AP	Chesterfield	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 54% 4G strong-coverage share is 100%, with 5G at 54% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
S43 1AQ	Chesterfield	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 54% 4G strong-coverage share is 100%, with 5G at 54% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
S43 1AR	Chesterfield	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 54% 4G strong-coverage share is 100%, with 5G at 54% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
S43 1AS	Chesterfield	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 54% 4G strong-coverage share is 100%, with 5G at 54% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
S43 1AT	Chesterfield	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 54% 4G strong-coverage share is 100%, with 5G at 54% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
S43 1AU	Chesterfield	Broadband coverage is mixed Gigabit availability is 50%, with 50% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 100% · 5G 54% 4G strong-coverage share is 100%, with 5G at 54% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
S43 1AW	Chesterfield	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 54% 4G strong-coverage share is 100%, with 5G at 54% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
S43 1AX	Chesterfield	Strong broadband coverage Gigabit availability is 87.5%, with 87.5% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 100% · 5G 54% 4G strong-coverage share is 100%, with 5G at 54% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
S43 1AY	Chesterfield	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 54% 4G strong-coverage share is 100%, with 5G at 54% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
S43 1AZ	Chesterfield	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 54% 4G strong-coverage share is 100%, with 5G at 54% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
S43 1BA	Chesterfield	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 54% 4G strong-coverage share is 100%, with 5G at 54% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
S43 1BB	Chesterfield	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 54% 4G strong-coverage share is 100%, with 5G at 54% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
S43 1BD	Chesterfield	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 54% 4G strong-coverage share is 100%, with 5G at 54% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
S43 1BE	Chesterfield	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 54% 4G strong-coverage share is 100%, with 5G at 54% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
S43 1BF	Chesterfield	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 54% 4G strong-coverage share is 100%, with 5G at 54% 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.

Broadband and mobile checker

Research

Plan and learn

Support