City in Wales, United Kingdom
Internet in Cardiff: speed, SIM cards and coworking
Is the internet good in Cardiff?
Median fixed broadband in United Kingdom is 184 Mbps and mobile is 75 Mbps (Speedtest Global Index, 2026-08). Café wifi is reliable; the center has several work-friendly cafés.
Getting online in Cardiff
| Details | |
|---|---|
| Home fibre | Full fibre widespread via Openreach and Virgin Media; about £25–40 a month. |
| Cafés and coworking | Café wifi is reliable; the center has several work-friendly cafés. |
| Tourist SIM | Supermarkets, newsagents and phone shops sell prepaid SIMs (giffgaff, Lebara, Three, Vodafone); £10–20 buys a month of generous data. No ID needed. |
| eSIM | Local carriers sell eSIMs to visitors. |
| Carriers | EE, O2, Vodafone, Three |
| Monthly data plan | £10–20 ($13–26) |
Coworking spaces in Cardiff
Spaces we checked are open in 2026. Prices change; confirm on their sites.
| Space | Area | Day pass |
|---|---|---|
| Tramshed Tech | Pontcanna | — |
Internet speeds in Europe
National medians, Speedtest Global Index.
| Country | Fixed | Mobile |
|---|---|---|
| France | 332 Mbps | 133 Mbps |
| Iceland | 283 Mbps | — |
| Switzerland | 281 Mbps | 120 Mbps |
| Denmark | 278 Mbps | 161 Mbps |
| Romania | 276 Mbps | 83 Mbps |
| Hungary | 271 Mbps | 94 Mbps |
| Spain | 263 Mbps | 84 Mbps |
| Portugal | 252 Mbps | 128 Mbps |
| Andorra | 244 Mbps | — |
| Netherlands | 226 Mbps | 158 Mbps |
| Luxembourg | 221 Mbps | 173 Mbps |
| Poland | 215 Mbps | 109 Mbps |
Quick answers
Is the internet fast in Cardiff?
Median fixed broadband in United Kingdom is 184 Mbps and mobile is 75 Mbps (Speedtest Global Index, 2026-08). Café wifi is reliable; the center has several work-friendly cafés.
Which SIM card should I get in Cardiff?
Supermarkets, newsagents and phone shops sell prepaid SIMs (giffgaff, Lebara, Three, Vodafone); £10–20 buys a month of generous data. No ID needed.
Can I use an eSIM in United Kingdom?
Yes. Local carriers sell eSIMs to visitors, and travel eSIMs work too.
Are there coworking spaces in Cardiff?
Yes: Tramshed Tech.
More about Cardiff
Going to Cardiff solo?
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Sources
- Speedtest Global Index: United Kingdom
- EE
- O2
- Vodafone
- Three
- Visit Cardiff
- Transport for Wales
- Cardiff Airport
- Cardiff and Vale University Health Board
Speeds are medians from Ookla's Speedtest Global Index, cited for reference. Compiled and reviewed by SoloSquare. How we compile and score this. Spotted something out of date? Tell us.