Cisilion is an award-winning global systems integrator and managed service provider, working with clients in over 70 countries across five continents. We partner with leading technology vendors including Cisco, Microsoft and Dell Technologies.
Throughout the lifecycle of our projects, Cisilion has the capability to provide access to expert resources from design through to implementation and post-commissioning.

Through our global presence and proven capability, Cisilion offer a full suite of Professional and Managed Services that help protect your business.
#Named to MSP50 UK Award

Each year, the cloudtango awards recognize the most successful MSPs around the world in what has become a global reference due to its independent approach, and in-depth analysis. The selection of Cisilion for the MSP50 UK award, confirms its technical excellence, customer focus, and innovation within the industry.

20+ SME LE Cisco GoldAzure 50 ISO 27001


As Lockton’s strategic partner, Cisilion utilised our Cisco Gold Partner and Master […]


The solution met all requirements and was within the agreed budget. Cisilion’s price […]

Virtualization, Cloud Migration, Cybersecurity, Data Storage, DevOps... and 12 more
VMware, Dell, EMC², HP, HPE, +14 […] more
London, United Kingdom
Branches: New York and 2 more

Cisilion Reviews

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Everything Cisilion has done for us has been successful, with all deployments resulting in cost savings or improved performance – in most cases both.

Chay Bartlett, IT Asset Controller

Cisilion have been the most efficient and reliable partner we have chosen to date and I would have no hesitation in recommending them to anyone else. I thoroughly look forward to working with them again in the future.

Peter Singleton, VP Infrastructure Manager
Lockton Insurance

Cisilion are a very reliable partner with good expertise within the education sector. They have delivered our projects on time without any problems. Cisilion have taken us to a whole new level & we look forward to what the future brings!

Gareth Evans, Head of IT Services
The Royal Alexandra and Albert School

Cisilion showed a great understanding of our business requirements, they also demonstrated expertise in all areas. That gave us great confidence when working with them going forward.

Derek Walklate, Service Delivery Manager

Cisilion won with the lowest cost and highest quality tender. We were reassured by their extensive knowledge in the Public Sector.

David Reese, ICT Infrastructure Team Leader

Cisilion’s size was able to give us a personal and reactive service. Cisilion initially won the TelePresence project due to their proven track record with previous projects they had deployed for us and their expertise within the field.

Dean Fuller, Security & Networks Operation Mgr

Cisilion did a great job with our Microsoft Skype for Business deployment. It is clear they are experts within Collaboration and Unified Communications and this project was delivered within budget and on time.

Simon Marlow, IT Manager
Marketing Sciences

We really love working with Cisilion. They understand the way the law firm works, they understand the way infrastructure and unified collaboration works.

karen Jacks, IT Director
Bird & Bird

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