Covering a full 110KM of Sheffield and the surrounding area, our dark fibre network from CityFibre spans a huge section of Sheffield, ensuring that we can support as many organisations as possible with DarkLight in Sheffield. Explore this site or get in touch with our team at 0345 145 1234 to find out more about DarkLight!
Wondering what it means to be a DarkLight city? Click the video to explore how ultrafast connectivity benefits a huge variety of local organisations, from schools to restaurants, offices and more.
Click here to view the Sheffield map
Wondering how the speeds DarkLight offers measure up in real-world situations? Click one of the buttons below for some demonstrations - keep in mind that these speeds are approximate, with several factors affecting file transfer speeds.
Approximate time to transfer 100 high quality photos (400 MB)
Approximate time to transfer 100 high quality photos (400 MB)
Approximate time to transfer an HD film (4 GB)
Approximate time to transfer a full Blu-Ray disc (50 GB)
Approximate time to transfer an terabyte (1000 GB)