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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 CM20. 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
CM20 1AA	Harlow	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 73.3% 4G strong-coverage share is 100%, with 5G at 73.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CM20 1AB	Harlow	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 73.3% 4G strong-coverage share is 100%, with 5G at 73.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CM20 1AJ	Harlow	Broadband coverage is mixed Gigabit availability is 0%, with 12.5% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 100% · 5G 73.3% 4G strong-coverage share is 100%, with 5G at 73.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CM20 1AN	Harlow	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 73.3% 4G strong-coverage share is 100%, with 5G at 73.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CM20 1AQ	Harlow	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 73.3% 4G strong-coverage share is 100%, with 5G at 73.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CM20 1AR	Harlow	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 73.3% 4G strong-coverage share is 100%, with 5G at 73.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CM20 1AS	Harlow	Broadband coverage is mixed Gigabit availability is 0%, with 57.1% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 100% · 5G 73.3% 4G strong-coverage share is 100%, with 5G at 73.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CM20 1AT	Harlow	Broadband coverage is mixed Gigabit availability is 0%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 100% · 5G 73.3% 4G strong-coverage share is 100%, with 5G at 73.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CM20 1AU	Harlow	Broadband coverage is mixed Gigabit availability is 34.5%, with 79.3% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 100% · 5G 73.3% 4G strong-coverage share is 100%, with 5G at 73.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CM20 1AW	Harlow	Broadband coverage is mixed Gigabit availability is 24.4%, with 77.8% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 100% · 5G 73.3% 4G strong-coverage share is 100%, with 5G at 73.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CM20 1AY	Harlow	Broadband coverage is mixed Gigabit availability is 52.2%, with 52.2% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 100% · 5G 73.3% 4G strong-coverage share is 100%, with 5G at 73.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CM20 1BA	Harlow	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 73.3% 4G strong-coverage share is 100%, with 5G at 73.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CM20 1BB	Harlow	Broadband coverage is mixed Gigabit availability is 14.3%, with 28.6% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 100% · 5G 73.3% 4G strong-coverage share is 100%, with 5G at 73.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CM20 1BD	Harlow	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 73.3% 4G strong-coverage share is 100%, with 5G at 73.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CM20 1BL	Harlow	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 73.3% 4G strong-coverage share is 100%, with 5G at 73.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CM20 1BU	Harlow	Broadband coverage is mixed Gigabit availability is 0%, with 100% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 100% · 5G 73.3% 4G strong-coverage share is 100%, with 5G at 73.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CM20 1BW	Harlow	Broadband coverage is mixed Gigabit availability is 23.6%, with 25.5% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 100% · 5G 73.3% 4G strong-coverage share is 100%, with 5G at 73.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CM20 1BX	Harlow	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 73.3% 4G strong-coverage share is 100%, with 5G at 73.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CM20 1BZ	Harlow	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 73.3% 4G strong-coverage share is 100%, with 5G at 73.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CM20 1DG	Harlow	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 73.3% 4G strong-coverage share is 100%, with 5G at 73.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CM20 1DR	Harlow	Broadband coverage is mixed Gigabit availability is 47.1%, with 47.1% of premises at at least 300 Mbps and 0% below the Universal Service Obligation.	4G 100% · 5G 73.3% 4G strong-coverage share is 100%, with 5G at 73.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CM20 1DS	Harlow	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 73.3% 4G strong-coverage share is 100%, with 5G at 73.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CM20 1DT	Harlow	Partial connectivity coverage No current broadband summary row matched this postcode.	4G 100% · 5G 73.3% 4G strong-coverage share is 100%, with 5G at 73.3% in the current area-level summary.	Mobile year 2025
CM20 1DU	Harlow	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 73.3% 4G strong-coverage share is 100%, with 5G at 73.3% in the current area-level summary.	Broadband year 2024 · Mobile year 2025
CM20 1DW	Harlow	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 73.3% 4G strong-coverage share is 100%, with 5G at 73.3% 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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