High performance, secure managed IT services that make you competitive, compliant & cutting-edge.

For 40 years, CSI has maintained a reputation as an award-winning, market leader in the design and management of mission-critical IT solutions, supporting regulated industries on their modernisation journeys to the cloud.

As an accredited, global Managed IT Services Provider (MSP), we specialise in the delivery of Hybrid Multi-Cloud, Data Protection and Cyber Security to industries that need innovation now more than ever.

40 Years

Our Managed IT Services Are Trusted By

virgin money
Domestic and General
Buckinghamshire Building Society logo
Darlington Building Society
The Mortgage Lender
Fleet Mortgages

Secure, modernise & transform with our fully managed IT services.

We help global businesses to achieve meaningful transformation from the inside out. Working with a network of strategic partners, we combine expertise with cutting-edge technologies to power and secure some of the world’s most challenging IT environments.

Our managed IT solutions are powered by exciting ISVs and tailored to international businesses operating across the market. We simplify IT for clients where workloads are complex and highly regulated.

Speak to the teamOur work

cloud excellence awards 2022 finalist logo
Dell Gold Partner of the Year
British Bank Awards
IBM Beacon Award
Alert Logic Partner of the Year
Cloud Excellence award hybrid cloud product of the year
Cloud Excellence award cloud development platform
Cloud Excellence Awards 2019 Finalist
innovation award
UK Managed Services Awards 2019
UK Managed Services Awards 2018 winner

CSI is an IBM Power platinum partner.

Four Decades of Unbeatable IBM Power Partnership.

As one of IBM’s strategic Platinum Partners of choice, we understand all the benefits of reliable, efficient, performant, and secure IBM infrastructure. For support, insight and upgrades, we’ve helped countless customers to rapidly unlock the most value from their IBM investments.

Learn More


The CSI Difference

0 +

clients and partners that have trusted our cloud and IT services.

0 +

years of experience in delivering innovative solutions to the global marketplace.

0 %

of our team are in dedicated service delivery roles, ensuring an unrivalled partner experience.

Find the Support You Need

My industry is

and I have a challenge with

A Trusted Partner in IT Excellence

Dell gold partner
Red Hat
Veeam CSP
Cisco Partner
CSI offers managed IT services.

Managed IT Support

Transforming global business for 40 years.

From talent shortages to cyber threats, CSI’s managed IT services are flexible and tailored to address your most pressing challenges today.

Innovative solution delivery is in our DNA – and our team uses a consultative approach that tightly aligns cutting-edge technologies with your business goals and desired outcomes. Even more critical to our team is a high level of service and customer experience.

Work with us where you need:

  • IT Automation
  • Management
  • Tool configuration
  • Cost optimisation
  • Security advice
  • Modernisation

This amazing new SAN technology and CSI’s superb business support have enabled us to exploit new security features and significantly improve our processing environment and system recovery capability, through a cost-neutral exercise. It was a no-brainer to adopt the technology and work with CSI again.

Ian Ward, Head of Access Management, Domestic & General Read more