Connectivity in Cardiff
Welsh councilSouth Wales. 381,516 people in 142 square kilometres.
4 layers about connectivity for Cardiff, each at the level its publisher released it, with its own date and source.
Gigabit coverage by output area
Connected Nations (Ofcom) · January 2026
Cardiff’s 1,115 output areas range from 20.5% to 100.0%.
Gigabit broadband coverage
CouncilIn Cardiff, 94.4% of homes and businesses could get gigabit-capable broadband in January 2026.
For the UK as a whole, the figure was 87.8%.
- Against Wales
- 14% higher83.1%
- Against the UK
- 8% higher87.8%
Full-fibre broadband coverage
CouncilIn Cardiff, 87.0% of homes and businesses could get full-fibre broadband in January 2026.
For the UK as a whole, the figure was 81.0%.
- Against Wales
- 8% higher80.8%
- Against the UK
- 7% higher81.0%
Full-fibre take-up
CouncilIn Cardiff, 45% of the homes and businesses that could get full fibre had a full-fibre connection in January 2026.
For the UK as a whole, the figure was 47%.
- Against Wales
- 15% lower53%
- Against the UK
- 4% lower47%
4G coverage from all four networks
CouncilIn Cardiff, 99.79% of homes and businesses had outdoor 4G coverage from all four mobile networks in January 2026.
For the UK as a whole, the figure was 99.22%.
- Against Wales
- 2% higher97.97%
- Against the UK
- 1% higher99.22%