We’re a Sheffield-based managed IT and telecoms provider built around one idea: small and growing businesses deserve IT that just works, and a real person to call when it doesn’t.

Our name says it: tenacity. We stick with our clients through the everyday and the awkward, building solid IT and telecoms, helping you navigate what to do next, and getting you out of trouble when something goes wrong.
We deliberately focus on small and mid-sized businesses across Sheffield, Leeds, Manchester, Nottingham and Derby. That means enterprise-grade IT, sized and priced for teams like yours, from people who know your name and your setup.
You don’t want an IT department. You want IT that just works, and someone to call when it doesn’t.
Based in Sheffield, on the road across the North. When you need hands-on help, we come to you.
No jargon, no condescension. We explain what’s going on in a way that actually makes sense.
We monitor and maintain your systems so problems get fixed before you even notice them.
IT, phones, internet, security and cloud under one roof. One team, one number, one invoice.
Headquartered in Sheffield and supporting businesses across the North and Midlands.
Don’t take our word for it, here’s what clients who’ve worked with us for years have to say.
We have trusted the IT systems of several of our businesses to Liam McNaughton and his brilliant team at Tenacity IT Ltd for over 20 years. During this time Liam has specified and installed several cost effective new server-based, multi-user IT and VOIP telephony systems, as well as maintaining and upgrading systems along the way. Tenacity IT’s technical ability, professionalism and speed of response has always been excellent and we remain a very happy client!
The service and support has been excellent down the years whether it be daily support or project work to improve the system. We trust Tenacity. You can too.
Pick up the phone and talk to a local engineer, no forms, no hold-music marathons.