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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 CM13. 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
CM13 1AB	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
CM13 1AD	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
CM13 1AE	Brentwood	Broadband coverage is mixed Gigabit availability is 70.6%, with 70.6% 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
CM13 1AF	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
CM13 1AG	Brentwood	Strong broadband coverage Gigabit availability is 75%, with 75% 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
CM13 1AH	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
CM13 1AJ	Brentwood	Strong broadband coverage Gigabit availability is 84.2%, with 84.2% 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
CM13 1AN	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
CM13 1AP	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
CM13 1AQ	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
CM13 1AR	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
CM13 1AS	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
CM13 1AT	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
CM13 1AU	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
CM13 1AX	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
CM13 1AY	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
CM13 1AZ	Brentwood	Strong broadband coverage Gigabit availability is 93.3%, with 93.3% 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
CM13 1BA	Brentwood	Broadband coverage is mixed Gigabit availability is 66.7%, with 66.7% 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
CM13 1BD	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
CM13 1BE	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
CM13 1BG	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
CM13 1BH	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
CM13 1BJ	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
CM13 1BL	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
CM13 1BN	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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