CSI
CSI (Computer Systems Integration Limited) is a UK-headquartered managed IT services provider and IBM Platinum Partner that designs, builds, and manages hybrid cloud, IBM Power, cybersecurity, and AI infrastructure for mid-to-large regulated enterprises across financial services, healthcare, and education.
- Company typePrivate
- Founded1984
- HeadquartersBirmingham, United Kingdom
- Headcount101–250
- GTM typeB2B
- OfferingServices
What CSI does
CSI (Computer Systems Integration Limited / CSI LTD) is a UK-headquartered managed IT services provider that designs, builds, and manages complex IT infrastructure for mid-to-large enterprises in regulated industries. Founded in 1984, the company holds IBM Platinum Partner status and combines four decades of IBM Power (IBM i, AIX, Linux) expertise with modern hybrid cloud, cybersecurity, enterprise storage, and AI infrastructure capabilities. Its core proprietary platform, CSI PowerCloud, delivers managed private cloud for IBM Power and x86 workloads (the latter powered by Nutanix), complemented by CSI's Helix Cyber Resiliency Service, 24/7 Managed Detection & Response, AI training and inference platforms, and an Application Performance and Control Service built on IBM Turbonomic and Instana.
The company generates revenue through multi-year, bespoke managed services contracts with subscription-style recurring economics, selling directly via senior client directors into C-suite and IT leadership at regulated buyers across financial services, healthcare, education, manufacturing, and the public sector. In 2025 CSI extended its footprint materially through the acquisition of Apiture, an API-first digital banking platform serving more than 250 US banks and credit unions, integrating with CSI's NuPoint core banking platform to create an end-to-end core-and-digital banking proposition for US community and regional banks. The company is currently owned by Park Place Technologies following a 2025 acquisition, with £36M of growth capital previously invested by MML Capital Partners in August 2023 to fund acquisitions and organic expansion.
CSI's go-to-market blends consultative enterprise field sales with deep technology-partner co-marketing (IBM, Microsoft, Red Hat, Nutanix, Dell, Fortra, Veeam), supported by a content hub, case studies, and industry events. The company targets IT modernisation, cloud migration, cybersecurity, data protection, and operational resilience pain points for organisations facing legacy estate management, skills shortages, and regulatory pressures such as DORA, FCA, and ISO 27001/22301 compliance.
CSI firmographics
Firmographics- Name
- CSI
- Legal name
- Computer Systems Integration Limited
- Website
- https://csiltd.co.uk
- Company type
- Private
- Founded year
- 1984
- Operating status
- Operating
- Headcount range
- 101–250 employees
- Short description
- CSI (Computer Systems Integration Limited) is a UK-headquartered managed IT services provider and IBM Platinum Partner that designs, builds, and manages hybrid cloud, IBM Power, cybersecurity, and AI infrastructure for mid-to-large regulated enterprises across financial services, healthcare, and education.
- Ownership category
- akta.pro rank
CSI industry classification
Industry- Product category
- Managed IT Services
- NAICS
- Security Systems Services (56162)
- SIC
- Services-Computer Programming, Data Processing, Etc. (7370)
- akta.pro primary industry
- Security Operations Center (SOC) & Remote Video Guarding (VSOC) (BPABAMAF)
- akta.pro secondary industries
- Security Management Platforms Integration (PSIM/SOC, Command & Control) (BPAKAGAH), Emergency Dispatch Center Services (PSAP/911 Support, Private Dispatch) (BPAKAFAJ)
Keywords
Where CSI is headquartered
LocationHeadquarters
- HQ city
- Birmingham
- HQ country
- United Kingdom
- HQ region
- Europe
Offices2 records
Markets served
CSI business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Technology or R&D, Infrastructure, Operations, Marketing or Sales
Revenue model
- Managed IT Services: CSI generates recurring revenue through long-term managed services contracts delivering secure hybrid cloud, enterprise storage, cybersecurity, and operational resilience services to regulated organizations. Multi-year contracts with mid-to-large-sized companies generate strong recurring earnings.
- Digital Banking Platform (Apiture): Following the acquisition of Apiture, CSI provides a digital banking platform to financial institutions offering API-first digital banking, treasury management, and fintech integration capabilities.
- Cloud Services (Public & Hybrid): Public cloud managed services (Microsoft Azure, AWS), hybrid cloud solutions, and cloud cost optimization generate recurring revenue from cloud adoption and migration engagements.
- Cybersecurity Services: Managed detection and response, endpoint protection, phishing defense, and cyber security managed services provided on subscription basis.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Subscription | Multi-year contract | Bespoke managed services contracts — pricing negotiated based on scope, workload complexity, and contract length |
Go-to-market motion2 records
Distribution channels4 records
Marketing channels7 records
CSI product offering
Product offeringCore offering
CSI is a managed IT services provider delivering hybrid cloud, cybersecurity, enterprise storage, and application modernization services to mid-to-large enterprises in regulated industries. Its proprietary CSI PowerCloud platform and IBM Platinum Partner status underpin recurring managed services contracts covering IBM Power workloads, Azure/public cloud, cybersecurity (MDR/XDR), data protection, and core/digital banking (NuPoint and Apiture platforms).
Product overview
CSI (Computer Services, Inc.) is a financial software and technology provider offering a unified platform combining core banking, digital banking, and financial services. The product portfolio includes the proprietary NuPoint core banking platform, the Apiture API-first digital banking platform (acquired 2025), and AI-powered fraud detection through the Carefull partnership. CSI also operates as CSI LTD (csiltd.co.uk), a UK-based Managed Services Provider offering IBM Power Managed Services, CSI PowerCloud private cloud, public cloud services (Azure), hybrid cloud for x86, cybersecurity services, data protection, enterprise storage, application modernisation, AI platforms, and IT automation. The company maintains technology partnerships with IBM, Microsoft, Red Hat, Nutanix, and other vendors to deliver comprehensive IT solutions to regulated industries.
Differentiator
Problem solved
Functional benefit
Brands
- CSI PowerCloud: Private cloud platform for IBM Power workloads, providing managed Power-as-a-Service.
Products and services
- IBM Power Managed Services Managed services for IBM Power platforms (IBM i, AIX, Linux) providing resilience, security hardening, and cost optimisation for mission-critical workloads in regulated enterprises.
- CSI PowerCloud CSI's proprietary private cloud platform delivering Power-as-a-Service for IBM i, AIX, Linux, and OpenShift workloads with scalable compute capacity and managed infrastructure.
- Public Cloud Managed Services Managed cloud services including Microsoft Azure consulting, migration, cost optimisation, Microsoft 365 management, backup services, and cloud readiness assessments.
- Hybrid Cloud for x86 (Nutanix-powered) Hybrid cloud solution powered by Nutanix providing flexibility to run x86 workloads in private cloud or on-premises with hypervisor choice and built-in data protection.
- Cyber Security Managed Services Comprehensive cybersecurity services including Managed Detection & Response (MDR), Extended Detection & Response (XDR), endpoint protection, phishing defence, and compliance services for regulated enterprises.
- Data Protection Services Backup, recovery, disaster recovery, cloud backup, and data protection solutions ensuring business continuity and ransomware resilience for regulated enterprises.
- Enterprise Storage Solutions Scalable, secure enterprise data storage solutions including IBM Storage, FlashSystem, IBM Storage Scale (ESS) for HPC, and storage lifecycle management for demanding analytics and business-critical workloads.
- Application Modernisation Services Services transforming legacy monolithic applications into modern microservices architectures using containerisation, Kubernetes, and DevOps practices for regulated enterprises.
- Artificial Intelligence Platforms AI infrastructure platforms for training and inference workloads, supporting GPU-based computing on hyperscale public clouds (Azure, AWS with NVIDIA A10G) and on-premises IBM Power 10 servers with Matrix Math Accelerator.
- IT Automation and AIOps AIOps and IT process automation using IBM Cloud Pak for Watson AIOps, enabling proactive IT operations and intelligent incident response, including the Application Performance and Control Service combining IBM Turbonomic and Instana.
- NuPoint Core Banking Platform Core banking platform providing enhanced commercial banking capabilities including profitability insights, flexible pricing tools, and unified customer relationship views for US community and regional banks.
- Apiture Digital Banking Platform API-first digital banking platform providing treasury management tools, integrated payments (Zelle, real-time payments), and access to over 200 fintech partners through open architecture for US financial institutions.
Quantifiable outcome
- 90%+ of CSI team members are in dedicated service delivery roles, ensuring high service quality
- +2 more outcomes
Companies that use CSI
Customer profileNamed customers16 records
Segments8 records
Ideal customer profiles2 records
CSI technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
AI capability8 records
Feature10 records
CSI partnerships and signals
Strategic signalPartnerships
Eight partnerships are on record, tiered core and flagship.
- Apiture (Acquisition)coreCSI (US banking technology provider) completed its acquisition of Apiture, a digital banking provider, in October 2025. The acquisition integrates Apiture's API-first digital banking platform with CSI's core banking solutions, creating an end-to-end platform combining core banking, digital banking, and other financial services for community and regional banks.
- IBM (Platinum Partner)flagshipCSI is an IBM Platinum Partner — the highest tier of IBM partnership — providing IBM Power managed services (IBM i, AIX, Linux), IBM Cloud PowerVS, IBM Storage Solutions, IBM FlashSystem, IBM Power Virtual Tape Library, IBM i Security Services, and technology lifecycle services. CSI has held this partnership for four decades and has been recognised with IBM Beacon Awards.
- Microsoft AzurecoreCSI is a Microsoft solutions partner offering Azure managed services, Azure Cost Optimisation, Azure Readiness assessments, Microsoft 365 migration, and backup services for Azure and Microsoft 365. CSI holds Microsoft specialist designations including for Azure Virtual Desktop.
- NutanixcoreCSI PowerCloud for x86 is powered by Nutanix, providing hybrid cloud solutions for x86 workloads with scalability and efficiency. Nutanix enables the hyperconverged infrastructure underlying CSI's private cloud offerings.
- Red HatcoreCSI is a Red Hat Advanced Certified Cloud Provider (CCSP) partner, delivering container orchestration platforms built on Red Hat OpenShift. CSI also partners with Red Hat Ansible Automation Platform for automation inside and outside Kubernetes clusters.
- Dell TechnologiescoreCSI is a Dell Gold Partner and was awarded Dell Gold Partner of the Year. CSI offers Dell PowerEdge and Dell enterprise storage solutions as part of its managed services portfolio, including GPU-based options for AI workloads.
- Fortra (Alert Logic)coreCSI partners with Fortra and its Alert Logic cybersecurity platform to deliver managed detection and response (MDR) services. CSI was named Alert Logic Partner of the Year. Alert Logic provides vulnerability scanning and security analytics underpinning CSI's SOC services.
- IBM (Turbonomic & Instana)coreCSI's Application Performance and Control Service is powered by IBM Turbonomic (application resource management) and IBM Instana (application performance monitoring/APM). Instana was named a Leader in Gartner Magic Quadrant for APM in 2022. Turbonomic enables automated actions to maintain cost-effective performance.
Scale indicators5 records
Recent moves7 records
Expansion highlights6 records
CSI competitors and assessment
Company assessmentDirect peers
- Kyndryl: IBM-managed-services spinoff that runs mission-critical IBM Power, mainframe, and hybrid cloud estates for large enterprises — the most direct large-scale analogue to CSI's IBM Power managed services practice.
- Logicalis: Global IT managed services and solutions provider with strong IBM and Cisco partnerships, serving mid-market and enterprise customers across regulated industries — directly comparable GTM and technology stack.
- SCC: Europe's largest independent IT services group, delivering managed services, hybrid cloud, and security to enterprise and public-sector clients in the UK — a direct UK mid-market competitor.
Broad incumbents
- Computacenter: Large UK-listed enterprise IT infrastructure provider with deep managed services, security, and hybrid cloud capabilities — broader portfolio but overlapping target market and IBM/partner ecosystem.
- Softcat: UK-focused IT reseller and managed services provider to mid-market and enterprise customers — overlapping customer base though more infrastructure-resale-led than CSI's IBM-led managed services.
- Sopra Steria: European IT services and managed services firm with strong UK financial-services vertical presence — competes for similar regulated-industry modernisation and managed-services deals.
- DXC Technology: Global IT services and managed infrastructure provider with significant IBM heritage and large financial-services client base — comparable technology stack and customer profile.
- Capgemini: Global IT services firm with substantial UK managed services, cloud, and cybersecurity practice targeting regulated industries — competes for similar mid-market and enterprise transformation mandates.
Regional players
- Bytes Technology: UK IT solutions and managed services business serving enterprise and public sector — comparable mid-market UK customer overlap, with similar vendor-partner ecosystem.
- Netcompany: Northern European IT services and digital transformation provider with growing UK presence in financial services and public sector — comparable vertical focus and managed services growth profile.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat6 records
Key risks6 records
Key highlights7 records
Customer concentration
CSI social profiles
Digital presenceCSI compliance and trust
Trust signalCompliance3 records
CSI financial estimates
Financial estimateRevenue estimate
Valuation estimate
CSI leadership team
Management profileNumber of profiles
Profiles11 records
CSI funding detail
Funding detailFunding overview
Funding rounds2 records
Investors3 records
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
CSI M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about CSI
What does CSI do?
CSI is a managed IT services provider delivering hybrid cloud, cybersecurity, enterprise storage, and application modernization services to mid-to-large enterprises in regulated industries. Its proprietary CSI PowerCloud platform and IBM Platinum Partner status underpin recurring managed services contracts covering IBM Power workloads, Azure/public cloud, cybersecurity (MDR/XDR), data protection, and core/digital banking (NuPoint and Apiture platforms).
Is CSI a public or private company?
CSI is a private company. It is classified as private equity controlled and is currently operating.
When was CSI founded?
CSI was founded in 1984. It employs 101 to 250 people.
Where is CSI based?
CSI is headquartered in Birmingham, United Kingdom, in the Europe region.
How does CSI make money?
Four revenue lines are on record. Managed IT Services are the primary driver. The others are digital Banking Platform (Apiture), cloud Services (Public & Hybrid) and cybersecurity Services.
Who are CSI's main competitors?
Direct peers on record are Kyndryl, Logicalis and SCC. Broad incumbents are Computacenter, Softcat, Sopra Steria, DXC Technology and Capgemini. Regional players are Bytes Technology and Netcompany.
Does CSI have an API?
No public API is recorded for CSI.
What industry is CSI in?
CSI's product category is Managed IT Services. Its primary akta.pro industry code is BPABAMAF, Security Operations Center (SOC) & Remote Video Guarding (VSOC), with a secondary code of BPAKAGAH, Security Management Platforms Integration (PSIM/SOC, Command & Control). Its NAICS code is 56162 and its SIC code is 7370.