Ofcom data · 742 postcodes

WD23 broadband coverage — Harrow

Full-fibre, gigabit and superfast broadband availability across the WD23 postcode district, plus business broadband and leased-line options for Harrow.

Excellent coverage

Superfast (30Mb+)

98.3%

Ultrafast (300Mb+)

82.6%

Gigabit-capable

81.9%

Below USO (10Mb)

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District figures are an average — get the precise availability, full-fibre status and mobile signal for your address.

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Broadband in WD23

Broadband availability in the WD23 postcode district (Harrow) is Excellent — gigabit-capable full fibre is widely available. Across the 742 postcodes Ofcom measures in WD23, superfast broadband (30 Mbit/s or faster) reaches 98.3% of premises and gigabit-capable lines are available to 81.9%.

Around 0% of premises in WD23 fall below the Universal Service Obligation (a minimum of 10 Mbit/s download and 1 Mbit/s upload), so the overwhelming majority of homes and businesses here can already order a decent fixed line. For a business that depends on its connection, the figures that matter most are gigabit and full-fibre availability — the symmetric, low-contention services we quote leased lines and FTTP against.

Sample postcodes in WD23

Postcode	Superfast	Gigabit
WD23 1AA	100%	0%
WD23 1AB	100%	100%
WD23 1AD	100%	93.3%
WD23 1AE	100%	100%
WD23 1AG	100%	100%
WD23 1AH	100%	100%
WD23 1AJ	100%	100%
WD23 1AL	100%	100%
WD23 1AN	100%	100%
WD23 1AP	100%	100%

Business broadband & leased lines in Harrow

Whether the WD23 district has full fibre yet or not, we can connect your business. Where FTTP and gigabit are live we quote ultrafast full-fibre; where they aren't, a leased line still delivers guaranteed, symmetric speeds with an SLA. We also handle mobile coverage and VoIP for the same site.

Get a business broadband quote for WD23

Free, no obligation — full fibre, leased line or FTTC, matched to what's actually available at your postcode.

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Nearby WD districts

WD3 — 85.8% gigabit WD6 — 74.4% gigabit WD19 — 97.4% gigabit WD25 — 81.3% gigabit WD18 — 89.4% gigabit WD17 — 86.1% gigabit WD24 — 90.6% gigabit WD7 — 68.7% gigabit WD4 — 72.6% gigabit WD5 — 88.1% gigabit

See all Watford (WD) broadband coverage ›

Frequently asked questions

What broadband speeds are available in the WD23 area (Harrow)?

In the WD23 area (Harrow), superfast broadband (30 Mbit/s+) is available to approximately 98.3% of premises and gigabit-capable broadband to around 81.9%, based on Ofcom Connected Nations data. Exact availability varies by postcode — enter your full postcode in our checker for a precise result.

Can I get full-fibre or gigabit broadband in the WD23 area (Harrow)?

Gigabit-capable coverage in the WD23 area (Harrow) stands at about 81.9% of premises. Where gigabit and full-fibre (FTTP) are live, businesses can order symmetric, low-latency connections — ideal for cloud, VoIP and multi-site working. If full fibre hasn't reached your premises yet, a leased line can still deliver guaranteed gigabit speeds.

How do I check broadband at my exact address in the WD23 area (Harrow)?

Use the free broadband postcode checker on this page: enter your postcode to see fixed-broadband availability, gigabit/full-fibre coverage and mobile signal for all four networks at that location, sourced from official Ofcom data.

Who provides business broadband in the WD23 area (Harrow)?

Most UK providers serve the WD23 area (Harrow) over the Openreach and (where present) CityFibre or Virgin Media networks. Connection Technologies arranges business broadband, full-fibre (FTTP) and leased lines across the area — request a quote to compare options for your postcode.

Broadband availability data © 2026 Ofcom (Connected Nations), licensed under the Open Government Licence v3.0. Figures are area averages and predictions; availability at an individual address may differ — always confirm with a postcode-level check.