CAERPHILLY Broadband Coverage

Westminster parliamentary constituency · Wales · 45,861 premises

Compiled from official public sources by the publisher.

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.

#185 of 650 constituencies (full-fibre)

#314 of 650 for fixed/FWA gap

89.4% full-fibre (FTTP)

89.4%

Full-fibre (FTTP)

89.4%

Gigabit-capable · middle third

99.2%

Superfast (≥30 Mbit/s) · top third

89.6%

Ultrafast (≥300 Mbit/s) · middle third

0.0%

No decent fixed/FWA broadband · middle third

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

Broadband coverage metrics for CAERPHILLY - Ofcom Connected Nations Spring 2026

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)

What to do next

All constituencies · UK rankings · My watchlist

Compare constituencies head-to-head

Source: Source: Ofcom Connected Nations Spring 2026 (January 2026 snapshot, published May 2026 (r1)).

Source: Licence: Open Government Licence v3.0.

Read our methodology : how this data is sourced, computed, and verified.

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).

BIRMINGHAM NORTHFIELD 89.5% · England BARNSLEY NORTH 89.5% · England LEICESTER SOUTH 89.3% · England ALDRIDGE-BROWNHILLS 89.3% · England

Similar gigabit

Nearest other-nation constituencies by gigabit-capable coverage (89.4% here).

EXETER 89.4% · England TELFORD 89.4% · England HARLOW 89.4% · England COWDENBEATH AND KIRKCALDY 89.4% · Scotland

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.

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.

Wales → UK rankings → Methodology → How Ofcom Connected Nations works →

Source: Ofcom Connected Nations Spring 2026, January 2026 release (r1). Published under the Open Government Licence v3.0. Figures represent premises-level coverage availability, not actual subscriptions or speeds experienced.

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.