3 respected firms. One stronger partner.
Clipeum IT brings together Onyx IT, REACT Computer Partnership and CRIBB Cyber Security. Deep local roots, national reach, and specialists in every part of your technology.
The group
3 firms, one team
Each firm keeps its name, its people and its local roots. Together they share one helpdesk, one 24/7 SOC and one set of standards.
Onyx IT
Strategic IT and business cyber defence, trusted by Norfolk businesses since 1989.
REACT Computer Partnership
Measurably better IT support since 1997, and home to much of our Power Platform expertise.
CRIBB Cyber Security
Our cyber assurance arm: penetration testing, certification and data protection, and a UK government-backed Certification Body since 2016.
Timeline
How we got here
3 firms with decades behind them, and one group built to give every customer all of it.
- 1989
Onyx IT founded in Norwich
Proactive IT support for Norfolk businesses, many of whom are still customers today.
- 1997
REACT Computer Partnership founded in Woodbridge
Measured, professional IT support and consultancy for Suffolk and beyond.
- 2016
CRIBB Cyber Security founded in Hertfordshire
A government-backed Certification Body for Cyber Essentials and IASME Cyber Assurance.
- 2025
Clipeum IT Group
3 firms, one teamOnyx, REACT and CRIBB come together under Clipeum IT: one helpdesk, one 24/7 security operations centre, one set of standards.
- 2025 and 2026
MSP Titans of the Industry finalist
Advanced Cybersecurity category, 2 years running, the only UK firm in the category both years.
- 2026
DCC Level 0 Certification Body
Accredited to certify the defence supply chain under Defence Cyber Certification.
What it means for you
- One team and one helpdesk platform across every office
- A shared 24/7 security operations centre behind every customer
- The same standards and TAM reviews, whichever office looks after you
- Local engineers who can be on site, with national depth behind them
- Specialists in security, automation and governance under one roof
It's that extra level of care from Onyx that we love. Late one night, outside of normal or extended support hours, I couldn't connect to my Wi-Fi. Andrew, one of their lovely engineers (they are all lovely), picked up my ticket and drove out to help. Needless to say, when he tried to connect it did it first time, LoL.
Talk to a person who knows IT, not a script.
Tell us what's frustrating you about your IT or security. We'll give you an honest view of what we'd change, whether or not you work with us.