Portsmouth South Broadband Coverage
Westminster parliamentary constituency · England · 50,825 premises
At 76.3%, full-fibre coverage here falls short of the 77.5% UK national average.
Broadband Coverage in Portsmouth South
50,825 premises make up the Portsmouth South constituency in England. Its full-fibre availability of 76.3% is broadly in line with national trends; add in gigabit-capable cable upgrades and that figure rises to 95.3%. Superfast broadband (30 Mbit/s or more) is available to 99.2% of premises, with 96.0% able to reach ultrafast (300 Mbit/s or more) speeds.
On connectivity for all households, barely any premises in Portsmouth South, under 1%, miss the 10 Mbit/s Universal Service Obligation floor. Future Connected Nations releases may set a higher bar for "ultrafast" as gigabit coverage keeps expanding.
Where these figures come from
Figures are drawn from Ofcom's Connected Nations 2025 report (July 2025, r01), which aggregates postcode-sector data to constituency level. They represent coverage availability from at least one network operator, not the proportion of households that have subscribed to a given speed tier, nor the typical or guaranteed speeds that customers actually receive. Nearby constituencies in England with comparable full-fibre coverage are listed below.
Coverage Metrics
Full Metrics
| Metric | % of Premises |
|---|---|
| Full-fibre (FTTP) | 76.3% |
| Gigabit-capable broadband | 95.3% |
| Superfast (≥30 Mbit/s) | 99.2% |
| Ultrafast (≥300 Mbit/s) | 96.0% |
| Below USO (10 Mbit/s) | 0.0% |
| Total premises | 50,825 |
Related
Source: Ofcom Connected Nations 2025, July 2025 release (r01). Published under the Open Government Licence v3.0. Figures represent premises-level coverage availability, not actual subscriptions or speeds experienced.
Every figure on PlainBroadband is rendered directly from Ofcom Connected Nations data, no number is typed in by an editor. This constituency's figures are computed directly from Ofcom Connected Nations data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.