Broadband in Arun

Superfast first. 97% of Arun's 5,046 postcodes can get 30 Mbps or more, and only 0.5% fall below 10 Mbps, so basic connectivity is close to a solved problem across the district's ten outward codes, which include PO18, PO20, PO21 and PO22.

Gigabit is the dividing line. 70.8% of postcodes are passed by gigabit-capable networks, leaving roughly 29% waiting for top-tier availability. That is a real gap rather than a rounding error. Nearly three postcodes in ten cannot yet order the fastest packages. For movers and switchers the implication is straightforward. The floor is high everywhere in Arun, but the ceiling depends on the specific postcode, and two locations in the same outward code can face different maximum speeds.

For most households the 97% superfast floor means everyday use is safe at almost any address. The 70.8% gigabit figure matters mainly to heavy users, such as large households and home workers moving big files. If that describes you, a postcode lookup is worth doing before an offer is accepted, because just under a third of the district cannot yet take the fastest tiers.