PO1 broadband and area guide
Ofcom coverage, connection speeds, house prices and local data for 807 postcodes across 5 sectors in Portsmouth.
Full fibre
0%
Gigabit
85%
Superfast
95%
Postcodes
807
PO1 covers 807 postcodes across Portsmouth with excellent gigabit coverage at 84.7%. Full fibre infrastructure, recorded at 0%, indicates gigabit is delivered entirely via cable networks.
Broadband speeds in PO1
Share of PO1 premises by the fastest download speed available, averaged across all 807 postcodes in the district.
Gigabit availability reaches 84.7% of the 807 postcodes across Portsmouth, a strong urban figure. Full fibre is recorded at 0%, meaning all gigabit access is cable-delivered via upgraded HSD or DOCSIS networks. The speed distribution shows 86.3% of postcodes at 300+ Mbps, enabling high-bandwidth household activity. 8.7% sit in the 30-300 Mbps tier, adequate for everyday use. Only 0.3% report sub-10 Mbps speeds. Below-USO postcodes account for 0%, indicating universal coverage to Service Obligation thresholds. Wireless access is absent, confirming cable is the sole high-speed backbone here.
Source: Ofcom Connected Nations. Percentages are district-wide averages of postcode-level availability, so rows may not sum to exactly 100%.
Connectivity in detail
Below 10 Mbps USO
0%
Premises unable to get the 10 Mbps universal service minimum
Fixed wireless
0%
Premises that can use a fixed wireless access service
Broadband by sector
PO1 splits into 5 postcode sectors. Coverage and prices can differ street by street, so open a sector below to find your exact postcode.
| Sector | Postcodes | Superfast | Full fibre | Gigabit |
|---|---|---|---|---|
| PO1 1 | 132 | 94% | 0% | 92% |
| PO1 2 | 161 | 99% | 0% | 78% |
| PO1 3 | 196 | 91% | 0% | 78% |
| PO1 4 | 141 | 92% | 0% | 82% |
| PO1 5 | 177 | 100% | 0% | 95% |
All PO1 1 postcodes (132)
All PO1 2 postcodes (161)
All PO1 3 postcodes (196)
All PO1 4 postcodes (141)
All PO1 5 postcodes (177)
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Living in Portsmouth
Portsmouth residents in PO1 enjoy mature cable infrastructure without fibre dependency. Cable gigabit is reliable, well-distributed, and absence of slow zones shows network planning is thorough.
Remote worker score
54/100
Connectivity and amenities for home working
Family score
50/100
Schools, safety and family amenities
Value score
50/100
What you get for the local price level
PO1 broadband FAQs
Why is this district cable-only for gigabit?
Full fibre is recorded at 0%, so 84.7% gigabit comes entirely from upgraded cable (HSD/DOCSIS). Portsmouth's cable backbone predates fibre rollout plans.
Is gigabit reliable on cable alone?
Yes. Cable networks, when well-maintained, deliver reliable gigabit. 84.7% availability shows investment and network redundancy.
Are there any slow postcodes in PO1?
0.3% report sub-10 Mbps, and 0% sit below USO. Essentially complete coverage. Slow connectivity is extremely rare here.
Does cable gigabit have upload limitations?
Not materially. Modern DOCSIS 3.1 cable systems deliver strong symmetric upload capability. A provider inquiry will confirm your specific connection specs.
Neighbouring districts
Check your exact postcode
Every postcode in PO1 has its own page with broadband speeds, house prices, school ratings and crime stats. You can also compare providers for your address.
Data sources: Broadband data from Ofcom Connected Nations 2025 · House prices from HM Land Registry · Crime from Police.uk · See all data sources