CSI

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.

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

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

• Managed IT services
• Hybrid cloud infrastructure
• IBM Power managed services
• Cybersecurity managed services
• Enterprise storage solutions

Headquarters

HQ city

Birmingham

HQ country

United Kingdom

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Technology or R&D, Infrastructure, Operations, Marketing or Sales

Revenue model

1. 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.
2. 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.
3. 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.
4. Cybersecurity Services: Managed detection and response, endpoint protection, phishing defense, and cyber security managed services provided on subscription basis.

Pricing tiers

Go-to-market motion2 records

Distribution channels4 records

Marketing channels7 records

Core 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

Named customers16 records

Segments8 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

AI capability8 records

Feature10 records

Partnerships

Eight partnerships are on record, tiered core and flagship.

• Apiture (Acquisition)coreStrategic or Co-development Partner · 22 October 2025CSI (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)flagshipTechnology or IntegrationCSI 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 AzurecoreTechnology or IntegrationCSI 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.
• NutanixcoreTechnology or IntegrationCSI 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 HatcoreTechnology or IntegrationCSI 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 TechnologiescoreTechnology or IntegrationCSI 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)coreTechnology or IntegrationCSI 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)coreTechnology or IntegrationCSI'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

Direct 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

• Xx.com/csiltd
• YouTubeyoutube.com/channel/UC9NQEH_CC2a5LoYpDqYENCw
• LinkedInlinkedin.com/company/csi-ltd
• Instagraminstagram.com/csiltd

Compliance3 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles11 records

Funding overview

Funding rounds2 records

Investors3 records

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about CSI