Broadband in Harrow

Superfast coverage is close to blanket at 98.5 per cent of Harrow's 4,743 postcodes, and only 0.4 per cent fall below 10 Mbps. Gigabit-capable availability comes in at 87.5 per cent. Set against that, the full fibre figure of 0.1 per cent looks odd, and the sensible reading is cable network coverage supplying the gigabit numbers rather than fibre being genuinely absent from the area.

One outward code breaks the pattern. NW9 records full fibre across every one of its postcodes, while HA1, HA2, HA3, HA7 and HA8 all show zero in the same field. Eleven outward codes make up the area in total. For an address outside NW9, the recorded route to top speeds is the gigabit-capable network. Inside NW9, fibre appears on the menu as well.

In practice the slow tail is what most movers should weigh up, and Harrow barely has one. A 0.4 per cent share of postcodes below 10 Mbps is a small residue. Households after the fastest tiers can treat the 87.5 per cent gigabit figure as their odds. NW9 sits apart in the fibre data, so anyone specifically wanting a fibre-to-the-premises line will find the recorded picture clearest there.