Cloud Consulting Company

Castle Computer Services

UK partner for Microsoft Dynamics, Infor finance software, managed IT, cyber security and business communications

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TrustList summary

Castle Computer Services is a UK technology firm that supplies business and finance software alongside IT infrastructure and support. It says it has been working with customers for more than 40 years and serves organisations of all sizes across a range of industries.

What Castle Computer Services does

Microsoft Dynamics: developing, deploying and supporting Business Central, Dynamics NAV and Dynamics 365 apps for sales, field service, marketing and customer service, plus add-ons such as subscription billing and payroll.
Microsoft Power Platform: Power Apps, Power Automate, Power BI and Power Virtual Agents.
Infor and Pegasus finance: financial management systems including Infor SunSystems, Infor OS and Infor d/EPM.
Managed IT and cyber security: IT support, Cyber Essentials, SentinelOne, security monitoring and staff cyber training.
Cloud and backup: data centre and virtualisation services, Microsoft Azure and the modern workplace, and disaster recovery with Datto and StorageCraft.
Business communications: internet connectivity, WiFi and cabling, business mobiles, VoIP and telephone systems.

Clients

The firm works with enterprises and smaller organisations across many sectors, with customers throughout the UK.

Key facts

Based in: United Kingdom
Experience: more than 40 years
Platforms: Microsoft, Infor, Pegasus

Summary written by TrustList from the business's own published information, Sep 2026.

Gallery

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Categories & features

Castle Computer Services rankings

Castle Computer Services is ranked on 3 TrustList rankings: #12 on 1, #30 on 1 and #46 on 1.

Every ranking orders its listings by their reviews, how complete the profile is and the Trust Score. Castle Computer Services has no reviews yet and 3 of the 10 profile details we look for. Where no listing on a page has been reviewed, the order follows the profiles alone.

Cloud consulting company · 3 rankings

#12of 103
United kingdom
It is the only one of the top 68 here listing SQL and SQL server.
Its profile: “- Based in: United Kingdom - Experience: more than 40 years - Platforms: Microsoft, Infor, Pegasus Castle Computer Services is a UK technology firm that supplies business and finance software alongside IT infrastructure and support.”
Of the top 68 here, 31 also cover cloud and 25 also cover web development; 5 also work in London and 2 also work in Scotland.
Behind Capital Networks Ltd, ahead of Annodata.
#30of 141
Consumer products and services
It is one of 2 here listing SME and one of 4 here listing ERP.
Of the top 82 here, 48 also cover business services and 44 also cover financial services; 2 also work in North America and 2 also work in Houston.
Behind Carrion Group, LLC, ahead of Consilium.
#46of 217
Management
It is one of 6 here listing real estate and one of 8 here listing outsourcing.
Its profile: “- Infor and Pegasus finance: financial management systems including Infor SunSystems, Infor OS and Infor d/EPM.”
Of the top 92 here, 52 also cover security and 24 also cover medical; 5 also work in Florida and 3 also work in Toronto.
Behind CartPilot, ahead of Concord Analytics.