Just over the Derbyshire border, Chesterfield blends established town-centre businesses with newer firms out at Markham Vale and along the A61. It is an easy run from our Sheffield base, so Chesterfield businesses get the responsiveness of a local provider with the depth of a full IT, telecoms and security team behind it.
From IT support and phone systems to internet, security and cloud, Chesterfield businesses get everything under one roof from a partner that knows the area.
Across Chesterfield we look after businesses in the town centre, Markham Vale, Whittington Moor and Dunston, and everywhere in between. Whether you need a fast helpdesk, a modern phone system, reliable internet, stronger security or a move to the cloud, you get it all from one local team that knows your setup and answers the phone. Chesterfield is a short trip from our Sheffield base, so on site support is never far away.
Pick the services you need now, and add the rest as you grow.

Fast, friendly IT support from a local team, plus proactive monitoring so less goes wrong in the first place.
Learn more →
Modern cloud phone systems, and AI that answers, routes and handles calls so your team can focus on customers.
Learn more →
Business-grade broadband and leased lines we supply, install and support, with one number to call when it matters.
Learn more →
Always on protection for your business, watched over by real people. From EDR and MDR to identity, MFA and disaster recovery, we keep the threats out and keep you running.
Learn more →
Microsoft 365, cloud backup and migrations done right, so your business works securely from anywhere.
Learn more →
More than picking tools. We help you build an AI strategy, then design, deploy and run the workflows that genuinely save your team time and money.
Learn more →
Off the shelf software not quite fitting? Our in house development team builds the custom apps, dashboards and automations that make your business run better.
Learn more →Yes. We look after Chesterfield businesses remotely every day, and Chesterfield is a short trip from our Sheffield base, so on site support is never far away. Across Chesterfield we look after businesses in the town centre, Markham Vale, Whittington Moor and Dunston, and everywhere in between.
It depends on your team size and the services you need. We price per user with no long lock-ins, so it scales as you grow. See our guide to IT support costs for small businesses, or call 0114 303 7000 for a quick, no obligation ballpark.
Absolutely, and it is usually simpler than people expect. We speak to your current provider, manage the handover and migration, and most Chesterfield businesses are fully switched over in under a day with no downtime.
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.