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Broadband in Cardiff (Caerdydd)

93% of homes in Cardiff can get gigabit broadband, 4 points below the Cardiff average of 96% and 8 points above the Wales figure of 85%. 98% can get superfast speeds of 30Mbps or more.

Most homes in Cardiff can get gigabit broadband.

  • Gigabit
    1,000Mbps or faster
    93%
  • Ultrafast
    300Mbps or faster
    93%
  • Fast
    100Mbps or faster
    94%
  • Superfast
    30Mbps or faster
    98%
  • No decent service
    Under 10Mbps from fixed lines or wireless
    0%
Average share of homes able to get each speed across 6,957 postcodes in Cardiff (CF14, CF5, CF24, CF23, CF3, CF11, CF10, CF15, CF99). Source: Ofcom Connected Nations, January 2026.

Street by street

88%
of Cardiff's postcodes have gigabit broadband for every home
5%
of postcodes have no gigabit broadband at all yet
0%
of postcodes include homes that can't get decent broadband

How Cardiff compares

AreaGigabit300Mbps+Superfast
Cardiff93%93%98%
Cardiff96%97%99%
Wales85%85%97%
United Kingdom89%89%98%

Nearby towns

Choosing a provider in Cardiff

Most addresses in Cardiff can order from providers on the Openreach network. If Openreach has built full fibre to your street, all of them can sell it to you, so the choice comes down to price, the yearly price rise and customer service.

Virgin Media and independent full fibre networks only cover the streets they have built. If one of them covers you, it can be worth comparing, as they often sell faster speeds for similar money.

  • BTRises £4.00 a month each year
  • EERises £4.00 a month each year
  • SkyYearly rise not fixed at sale
  • TalkTalkRises £4.00 a month each year
  • VodafoneRises £3.50 a month each year
  • PlusnetRises £4.00 a month each year
  • NOW BroadbandYearly rise not fixed at sale
  • Zen InternetNo mid-contract rises

Questions

Can I get full fibre in Cardiff?
Most homes in Cardiff can get gigabit-capable broadband (93%), which in practice means full fibre or Virgin Media's cable network. Across Cardiff as a whole, 89% of homes can get full fibre. Coverage changes street by street, so check your own postcode.
What is the fastest broadband in Cardiff?
Gigabit speeds of 1,000Mbps or more are available to 93% of homes. Some providers sell faster packages again, up to several gigabits, on their own networks.
Which broadband providers cover Cardiff?
Providers that use the Openreach network, including BT, EE, Sky, Plusnet, Vodafone, TalkTalk and NOW, can sell to most addresses. Where Openreach has built full fibre they sell that too. Virgin Media and independent full fibre networks only cover the streets they have built.
Are there homes in Cardiff that can't get decent broadband?
No. Every postcode in Cardiff has decent broadband (at least 10Mbps download) available from a fixed line or wireless network.

Figures are averages of the share of homes able to get each speed in every postcode Ofcom lists for Cardiff, from Ofcom Connected Nations (January 2026). Postcodes are matched to towns using Ordnance Survey OS Open Names. Contains OS data © Crown copyright and database right. How we calculate this.