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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 CM14. 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
CM14 4AA	Brentwood	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 39% 4G strong-coverage share is 100%, with 5G at 39% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CM14 4AB	Brentwood	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 39% 4G strong-coverage share is 100%, with 5G at 39% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CM14 4AD	Brentwood	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 39% 4G strong-coverage share is 100%, with 5G at 39% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CM14 4AE	Brentwood	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 39% 4G strong-coverage share is 100%, with 5G at 39% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CM14 4AF	Brentwood	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 39% 4G strong-coverage share is 100%, with 5G at 39% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CM14 4AG	Brentwood	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 39% 4G strong-coverage share is 100%, with 5G at 39% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CM14 4AH	Brentwood	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 39% 4G strong-coverage share is 100%, with 5G at 39% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CM14 4AJ	Brentwood	Broadband coverage is mixed Gigabit availability is 15.4%, with 15.4% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 100% · 5G 39% 4G strong-coverage share is 100%, with 5G at 39% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CM14 4AL	Brentwood	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 39% 4G strong-coverage share is 100%, with 5G at 39% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CM14 4AN	Brentwood	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 39% 4G strong-coverage share is 100%, with 5G at 39% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CM14 4AP	Brentwood	Strong broadband coverage Gigabit availability is 94.4%, with 94.4% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 100% · 5G 39% 4G strong-coverage share is 100%, with 5G at 39% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CM14 4AQ	Brentwood	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 39% 4G strong-coverage share is 100%, with 5G at 39% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CM14 4AR	Brentwood	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 39% 4G strong-coverage share is 100%, with 5G at 39% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CM14 4AS	Brentwood	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 39% 4G strong-coverage share is 100%, with 5G at 39% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CM14 4AT	Brentwood	Broadband coverage is mixed Gigabit availability is 63.6%, with 63.6% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 100% · 5G 39% 4G strong-coverage share is 100%, with 5G at 39% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CM14 4AU	Brentwood	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 39% 4G strong-coverage share is 100%, with 5G at 39% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CM14 4AW	Brentwood	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 39% 4G strong-coverage share is 100%, with 5G at 39% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CM14 4AX	Brentwood	Broadband coverage is mixed Gigabit availability is 20%, with 20% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 100% · 5G 39% 4G strong-coverage share is 100%, with 5G at 39% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CM14 4AY	Brentwood	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 39% 4G strong-coverage share is 100%, with 5G at 39% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CM14 4AZ	Brentwood	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 39% 4G strong-coverage share is 100%, with 5G at 39% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CM14 4BA	Brentwood	Broadband coverage is mixed Gigabit availability is 46.7%, with 46.7% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 100% · 5G 39% 4G strong-coverage share is 100%, with 5G at 39% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CM14 4BB	Brentwood	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 39% 4G strong-coverage share is 100%, with 5G at 39% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CM14 4BD	Brentwood	Broadband coverage is mixed Gigabit availability is 30.3%, with 30.3% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 100% · 5G 39% 4G strong-coverage share is 100%, with 5G at 39% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CM14 4BG	Brentwood	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 39% 4G strong-coverage share is 100%, with 5G at 39% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CM14 4BH	Brentwood	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 39% 4G strong-coverage share is 100%, with 5G at 39% 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.

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