Next-generation connectivity for Sheffield Schools and Businesses
Sheffield DarkLight

DarkLight® Internet comes to Sheffield

Whether they're using Cloud storage and software, transmitting large amounts of data, or integrating new technologies and online services, modern-day schools and businesses need truly reliable and high-quality Internet services to run at the best possible level. Here at Exa Networks, we've provided organisations across the UK with bespoke Internet services for over 10 years, and we're proud to introduce DarkLight, the biggest step for Internet connectivity since Broadband.

DarkLight is the last Internet connection you'll ever need to install. Completely future proofed, DarkLight ensures that you always get the Internet speeds you're looking for - you can upgrade your speeds at absolutely any time. Our speeds (uploads and downloads are both just as fast) start off at an ultrafast 300 Mbps, with world-class 10 Gbps performance available today.

With all of our DarkLight connections coming with a 99.9% Service Level Agreement, you can be absolutely certain of absolutely reliable performance, all backed up by our award-winning customer service team.

Sheffield DarkLight

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

DarkLight Speed Comparison

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.

DarkLight - 10 Gbps
0.3 seconds
DarkLight - Gigabit
3.4 seconds
DarkLight - 300 Mbps
11.3 seconds
Average UK downloads (2016) - 28.9 Mbps
1 minute, 56 seconds
Average UK uploads (2016) - 3.7 Mbps
14 minutes

Approximate time to transfer 100 high quality photos (400 MB)

DarkLight - 10 Gbps
~0.3 seconds
DarkLight - Gigabit
~3.4 seconds
DarkLight - 300 Mbps
~11.3 seconds
Average UK downloads (2016) - 28.9 Mbps
~1 minute, 56 seconds
Average UK uploads (2016) - 3.7 Mbps
~14 minutes

Approximate time to transfer 100 high quality photos (400 MB)

DarkLight - 10 Gbps
~3.4 seconds
DarkLight - Gigabit
~34 seconds
DarkLight - 300 Mbps
~1 minute, 55 seconds
Average UK downloads (2016) - 28.9 Mbps
~19 minutes, 45 seconds
Average UK uploads (2016) - 3.7 Mbps
~2 hours, 23 minutes and 10 seconds

Approximate time to transfer an HD film (4 GB)

DarkLight - 10 Gbps
~43 seconds
DarkLight - Gigabit
~7 minutes, 9 seconds
DarkLight - 300 Mbps
~23 minutes, 51 seconds
Average UK downloads (2016) - 28.9 Mbps
~4 hours, 6 minutes and 50 seconds
Average UK uploads (2016) - 3.7 Mbps
~1 day, 5 hours, 49 minutes, 34 seconds

Approximate time to transfer a full Blu-Ray disc (50 GB)

DarkLight - 10 Gbps
~14 minutes, 40 seconds
DarkLight - Gigabit
~2 hours, 26 minutes and 36 seconds
DarkLight - 300 Mbps
~7 hours, 57 minutes and 13 seconds
Average UK downloads (2016) - 28.9 Mbps
~3 days, 12 hours and 15 minutes
Average UK uploads (2016) - 3.7 Mbps
~25 days, 10 hours and 50 minutes

Approximate time to transfer an terabyte (1000 GB)

Speeding Up Sheffield

As it becomes one of our latest DarkLight Gigabit Cities, schools and businesses around Sheffield will soon be able to get truly world class internet connectivity. Our network stretches through most major areas in the city, from the centre out to the Sheffield Arena and far more. Our dark fibre network also stretches through Doncaster as well as Rotherham - check out those pages for more information.

Wondering how DarkLight can help you? Call our team today at 0345 145 1234 to discuss your requirements - and how DarkLight can support you.

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