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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 CM18. 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
CM18 6AA	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
CM18 6AB	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
CM18 6AD	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
CM18 6AE	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
CM18 6AF	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
CM18 6AG	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
CM18 6AH	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
CM18 6AJ	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
CM18 6AL	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
CM18 6AN	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
CM18 6AP	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
CM18 6AQ	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
CM18 6AR	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
CM18 6AS	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
CM18 6AT	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
CM18 6AU	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
CM18 6AW	Harlow	Strong broadband coverage Gigabit availability is 96.6%, with 96.6% 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
CM18 6BA	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
CM18 6BB	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
CM18 6BD	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
CM18 6BE	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
CM18 6BG	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
CM18 6BJ	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
CM18 6BL	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
CM18 6BN	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

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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