Three
Three 4G Hub (24m)
Claim up to £200 switching credit.
£15.00a month
Price rises
£18.50 from 1 April 2027
£22.00 from 1 April 2028
10Mavg speed
24mcontract
£0.00set-up
Effective Monthly Cost£18.21
More details about Three 4G Hub (24m)Cardiff broadband
Broadband deals Cardiff
Compare broadband deals across Cardiff from 19 providers, with prices from £15.00/month.
Enter your address to compare broadband deals at your home
Effective Monthly Cost
Every deal ranked on its average monthly price over the contract.
No paid placements
Providers can't pay for a higher spot.
Compare 3 side by side
Line up your shortlist in one view.
2 trees planted per switch
With our partner Ecologi.
Best Environmentally-Focused Comparison Platform 2026, SME News IT AwardsFull Fibre (FTTP)
92.08%
Above UK
Gigabit Broadband
97.49%
Above UK
Average Speed
225Mbps
Prices from
£15.00p/m
Data sources: Pricing & Providers by Switchity | Coverage statistics provided by ThinkBroadband Labs.
Cheapest broadband deals in Cardiff
Virgin Media
M250 Broadband Only
£18.99a month
Price rises
£22.99 from 1 April 2027
£26.99 from 1 April 2028
264Mavg speed
24mcontract
£0.00set-up
Effective Monthly Cost£22.66
More details about M250 Broadband OnlyVirgin Media
M125 Broadband Only
£18.99a month
Price rises
£22.99 from 1 April 2027
£26.99 from 1 April 2028
132Mavg speed
24mcontract
£0.00set-up
Effective Monthly Cost£22.66
More details about M125 Broadband OnlyFastest broadband deals in Cardiff
EE
Full Fibre 1.6GB
£100 Reward Card | Claim up to £200 switching credit.Offer ends 1 Oct
£38.99a month
Price rises
£42.99 from 31 March 2027
£46.99 from 31 March 2028
1.6Gavg speed
24mcontract
£30.00set-up
Effective Monthly Cost£39.74
More details about Full Fibre 1.6GB
Zen
Full Fibre Max
Offer ends 30 Sept
£45.00a month
No mid contract price rises
1.6Gavg speed
24mcontract
£15.00set-up
Effective Monthly Cost£45.63
More details about Full Fibre MaxVirgin Media
Gig1 Broadband Only
£23.99a month
Price rises
£27.99 from 1 April 2027
£31.99 from 1 April 2028
1.1Gavg speed
24mcontract
£0.00set-up
Effective Monthly Cost£27.66
More details about Gig1 Broadband OnlyBest broadband + TV bundles in Cardiff
Sky
Sky Stream, Essential TV & Netflix with Full Fibre 150
Claim up to £300 switching credit.TV
£32.00a month
Prices may rise during your contract
150Mavg speed
24mcontract
£5.00set-up
Effective Monthly Cost£32.21
More details about Sky Stream, Essential TV & Netflix with Full Fibre 150Virgin Media
M125 Broadband + Flex
TV
£28.99a month
Price rises
£32.99 from 1 April 2027
£36.99 from 1 April 2028
132Mavg speed
24mcontract
£0.00set-up
Effective Monthly Cost£32.66
More details about M125 Broadband + FlexSky
Sky Stream, Essential TV & Netflix with Full Fibre Gigafast
Claim up to £300 switching credit.TV
£35.00a month
Prices may rise during your contract
900Mavg speed
24mcontract
£0.00set-up
Effective Monthly Cost£35.00
More details about Sky Stream, Essential TV & Netflix with Full Fibre GigafastAverage speed is the download speed at least half of customers get at peak time (8pm to 10pm). We earn a commission from the provider when you switch through our links, at no extra cost to you. Commission never affects how deals are ranked.
We research the deals for each area using a sample postcode in that area. Enter your postcode to see the deals available at your address, or use our postcode checker for exact speeds.
How Good is Broadband in Cardiff?
Cardiff benefits from strong broadband availability, with full fibre reaching nearly 92% of homes and gigabit speeds accessible to 97% of premises. Coverage is strongest in the central belt and spreading outwards, though some outer suburbs have patchier availability.
Cathays, Roath, and Heath enjoy excellent full fibre coverage in the central and northern areas, with residents having strong access to fast connections from multiple providers. Canton, Grangetown, and Cardiff Bay in the south have comprehensive coverage from both Openreach FTTP and Virgin Media's cable network, plus some independent fibre competition. Pontprennau, St Mellons, and Llanrumney in the eastern suburbs have good altnet presence alongside mainstream providers, offering competitive choice. Cyncoed and Lisvane in the affluent northeast have Virgin Media's newest 2Gbps technology but more variable FTTP coverage. Radyr and Pentyrch on the rural fringes should check specific addresses, as full fibre availability becomes less consistent.
Broadband providers in Cardiff
Independent customer ratings pulled from Trustpilot.
4th Utility
4.5
Based on 11.6k Trustpilot reviews
View 4th Utility dealsSource: Trustpilot
Checked 11 September 2026
Airband
4.3
Based on 11.9k Trustpilot reviews
View Airband dealsSource: Trustpilot
Checked 11 September 2026
NOW Broadband
1.1
Based on 15.0k Trustpilot reviews
View NOW Broadband dealsSource: Trustpilot
Checked 11 September 2026
Plusnet
1.7
Based on 12.6k Trustpilot reviews
View Plusnet dealsSource: Trustpilot
Checked 11 September 2026
Pop Telecom
4.3
Based on 11.4k Trustpilot reviews
View Pop Telecom dealsSource: Trustpilot
Checked 11 September 2026
Rebel Internet
4.5
Based on 911 Trustpilot reviews
View Rebel Internet dealsSource: Trustpilot
Checked 11 September 2026
Rise Fibre
4.6
Based on 6.6k Trustpilot reviews
View Rise Fibre dealsSource: Trustpilot
Checked 11 September 2026
TalkTalk
2.1
Based on 89.7k Trustpilot reviews
View TalkTalk dealsSource: Trustpilot
Checked 11 September 2026
The One
1.8
Based on 498 Trustpilot reviews
View The One dealsSource: Trustpilot
Checked 11 September 2026
Three
4.6
Based on 67.9k Trustpilot reviews
View Three dealsSource: Trustpilot
Checked 11 September 2026
Virgin Media
1.7
Based on 106.6k Trustpilot reviews
View Virgin Media dealsSource: Trustpilot
Checked 11 September 2026
Vodafone
4.7
Based on 142.0k Trustpilot reviews
View Vodafone dealsSource: Trustpilot
Checked 11 September 2026
Onestream
4.3
Based on 41.9k Trustpilot reviews
View Onestream dealsSource: Trustpilot
Checked 11 September 2026
V4 Consumer
4.4
Based on 1.5k Trustpilot reviews
View V4 Consumer dealsSource: Trustpilot
Checked 11 September 2026
Zen Internet
4.3
Based on 18.4k Trustpilot reviews
View Zen Internet dealsSource: Trustpilot
Checked 11 September 2026
Enter your postcode in our broadband postcode checker to see which providers serve your specific address and compare their available packages.
Alternative broadband providers in Cardiff
Alternative network providers have limited presence in Cardiff at just 10.5% coverage, concentrated mainly in eastern areas like Pontprennau, St Mellons, and Llanrumney, plus southern districts around Canton and Grangetown. Most central and northern suburbs have fewer independent fibre options beyond the major national networks.
Broadband coverage and technology in Cardiff
Here is a breakdown of the network coverage available across 186,674 premises in Cardiff, benchmarked directly against current UK national averages.
Full Fibre (FTTP)
92.08%
Above UK
Virgin Media
81.05%
Above UK
Gigabit
97.49%
Above UK
Altnets
13.25%
Below UK
Part-Fibre (FTTC)
99.62%
UK average
Copper ADSL
0.36%
Above UK
Cardiff's broadband infrastructure performs well above UK averages, with the 97% gigabit availability figure reflecting where Virgin Media's cable network fills gaps left by FTTP rollout. This means nearly all residents can access speeds of 1Gbps or faster. The main limitation is the relatively low altnet presence at 10.5%, meaning fewer independent providers competing for custom compared to other cities. While connection speeds are rarely an issue, the range of provider choice varies considerably depending on which neighbourhood you live in, particularly affecting residents in western and northern suburbs.
Data sources: Coverage statistics provided by ThinkBroadband Labs (Correct as of September 2026).
How to choose the best broadband deal in Cardiff
The four things worth checking before you commit to a 24-month contract.
Best value broadband deal
Cardiff's 19 active broadband providers keep prices competitive. Right now the best value deal is Three's Three 4G Hub (24m) at £15.00 a month for 10Mbps on a 24-month contract. Compare the effective monthly cost (including any setup fees and rewards) to find the true cheapest deal.
Best deal for speed
The fastest full-fibre broadband deal in Cardiff is EE's Full Fibre 1.6GB at 1600Mbps for £38.99 a month. Ideal for households running multiple 4K streams, video calls or large file transfers.
One Touch Switch
Thanks to Ofcom’s One Touch Switch, changing providers in Cardiff requires just a single request. Simply sign up with your new supplier and they will manage the cancellation of your old contract automatically.
No more retention calls; just a seamless switch.
In contract? Calculate before you switch
Check your Early Termination Fee (ETF) with our calculator to see if switching saves you money overall. Some providers will even pay this fee for you. Alternatively, use your estimate to haggle a better deal with your current provider.
ETF calculatorPrices and packages for Cardiff come from our live deal feed, covering 19+ UK providers, and are researched using a sample postcode in the area.
Eco impact
Switch smarter & make a difference in Cardiff
Every successful switch through Switchity plants two trees through our verified reforestation partner, Ecologi. A mature tree takes up about 22 kg of CO₂ a year, according to the European Environment Agency. Once grown, the 450 trees our switchers have funded could absorb around 9,900 kg of CO₂ a year.
450 / 1000 trees45% to goal
2
Trees per switch
9,900 kg
CO₂ a year, once grown
£19,000+
Customer savings
Savings estimated for broadband switches, from the typical bill our exit-fee calculator users report against comparable deals on our panel.
Broadband in Cardiff — common questions
Currently, the fastest option in Cardiff reaches speeds of 1600Mbps. You can get this speed with the EE Full Fibre 1.6GB package.
Prices in the area currently start from £15.00 per month. Our data shows that Three Three 4G Hub (24m) offers the best value for money right now.
Yes, combining internet and entertainment is a great way to save money in Cardiff. Currently, our top-rated bundle is Sky Sky Stream, Essential TV & Netflix with Full Fibre 150 — just £32.00 per month.
Competition is high in Cardiff. We found 19 different providers serving the area, including major networks like Sky and BT, plus independent Altnets.
Yes, Full Fibre coverage is currently at 92.08%. This technology delivers the most reliable connection for streaming and gaming compared to older copper connections.
Virgin Media's cable network currently covers 81.05% of the Cardiff area. If you fall outside this coverage zone, you can likely still access high speeds via the Openreach network.
Switching providers in Cardiff is now easier than ever thanks to One Touch Switch. You don't need to contact your old provider to cancel, simply choose a new deal from the 19 available ISPs and they'll handle the cancellation for you.
Our community impact
Every switch through Switchity supports reforestation and saves our community money on their broadband.
450
Trees grown together
£19,000
Saved by community
£105
Typical yearly saving
550
Trees to go to goal
Savings are estimates: the typical bill our exit-fee calculator users report against comparable deals on our panel, applied per confirmed broadband switch. Ofcom finds in-contract broadband customers pay £7 to £9 a month less than out-of-contract customers (February 2026). How we work this out
Written by Claudia Constantin, Co-Founder & Managing EditorPublished · Updated
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