Caerphilly Broadband Coverage
Westminster parliamentary constituency · Wales · 45,861 premises
89.4% full-fibre puts Caerphilly ahead of the 81% UK average.
The verdict
Caerphilly ranks #185 of 650 constituencies for full-fibre (89.4%) and #314 for the fixed/FWA availability gap (0.0%) - those two corpus maps diverge.
Broadband Coverage in Caerphilly
On the Ofcom register, Caerphilly (Wales) lists 45,861 premises. 89.4% can order full-fibre broadband today, a figure that is above-average. Counting gigabit-capable cable upgrades alongside full-fibre lifts coverage to 89.4%; superfast (30 Mbit/s or more) reaches 99.2% of premises and ultrafast (300 Mbit/s or more) reaches 89.6%.
On connectivity for all households, Caerphilly has near-universal fixed and fixed-wireless broadband availability: fewer than 1% of premises cannot receive a decent service. Full-fibre sits in the top third of UK seats at 89.4%, and Ofcom's Spring 2026 measure shows every measured premise can receive decent fixed or fixed-wireless broadband.
Where these figures come from
Figures are drawn from Ofcom's Connected Nations Spring 2026 report (January 2026 snapshot, published May 2026 (r1)), 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 Wales with comparable full-fibre coverage are listed below.
Coverage Metrics
Where Caerphilly Sits Nationally
Caerphilly vs every UK parliamentary constituency
Full-fibre coverage distribution across all 650 UK constituencies. Caerphilly's 89.4% places it in the highlighted band.
89.4% Top 29% higher than 71% of 650 UK constituencies
every UK parliamentary constituency, bucketed by value
Each bar is a band; taller bars hold more UK constituencies. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source Ofcom Connected Nations Spring 2026 · January 2026 snapshot, published May 2026 (r1)
Related
Source: Source: Ofcom Connected Nations Spring 2026 (January 2026 snapshot, published May 2026 (r1)).
Nationwide constituencies with similar full-fibre or gigabit coverage
Two Ofcom peer sets for Caerphilly (top-third full-fibre at 89.4%), both outside Wales so the neighborhoods are not the same-nation Nearby block above.
Similar full-fibre
Nearest other-nation constituencies by full-fibre coverage (89.4% here; floor ≥5,000 premises).
Similar gigabit
Nearest other-nation constituencies by gigabit-capable coverage (89.4% here).
What 89.4% full-fibre means for Caerphilly
Caerphilly is 8.4pp ahead of the 81% UK average, but coverage still varies street by street.
- Check your own address, a constituency average can hide big street-by-street differences in coverage. Check your postcode
- See how Caerphilly ranks against every other UK constituency, not just the national average. Full UK rankings
- Understand what full-fibre actually gets you before switching. How Ofcom Connected Nations works
Coverage figures are Ofcom Connected Nations availability data, not a guarantee of service at any single address; always check before switching.
Frequently Asked Questions
How does Caerphilly's full-fibre coverage compare with other UK constituencies?
Ofcom Connected Nations Spring 2026 puts full-fibre (FTTP) at 89.4% of premises in Caerphilly, ranked #185 of 650 UK constituencies (higher than 464 of them). The UK average is 81%.
Is the fixed/FWA availability gap closed in Caerphilly?
Ofcom's Spring 2026 measure shows every measured premise in Caerphilly can receive decent broadband from a fixed line or fixed-wireless network.
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.