What C5 Alliance does

C5 Alliance Group Limited is a private, Jersey-registered IT services and consulting firm operating as the sister technology business to BDO Jersey, with approximately 280 professionals across offices in St. Helier (Jersey), St. Peter Port (Guernsey), and Douglas (Isle of Man). The company delivers integrated Advisory, Technology, and Assurance solutions - spanning digital strategy, transformation and change management, application development, cloud and infrastructure, cybersecurity, data platforms, and managed IT services - to regulated industries including financial services, trust and corporate services (TCSPs) and family offices, government and public sector, utilities, healthcare, and education.

The technology backbone is built on the Microsoft ecosystem: Azure, Microsoft 365, Power Platform, Dynamics 365, and Microsoft Fabric, complemented by proprietary offerings such as the locally hosted Island Cloud private infrastructure, NavOne Data Dashboards built for TCSPs, a Co-Managed IT services model using HALO PSA tooling, and immutable ransomware protection. C5 Alliance holds top-tier Microsoft Solutions Partner status with four competency certifications (Infrastructure Azure, Data & AI, Digital & App Innovation, Security), described as more than any other provider in the Channel Islands, alongside ISO 27001, ISO 20000-1, Cyber Essentials, and Cyber Assurance Level 2 certifications.

The business model combines recurring managed IT services (24x7x365 monitoring, SLA-backed support, cybersecurity management), Microsoft Cloud Solution Provider licensing with flexible monthly billing, professional services and consulting, and bespoke application development. Go-to-market is enterprise-focused and consultative, leveraging dedicated client directors and account managers across Crown Dependency regulated buyers, with global reach through the BDO network. Revenue is not publicly disclosed.

Name

C5 Alliance

Legal name

C5 Alliance Group Limited

Website

https://c5alliance.com

Company type

Private

Founded year

1998

Operating status

Operating

Headcount range

101–250 employees

Short description

C5 Alliance is a Jersey-registered IT services and consulting firm serving regulated industries across the Channel Islands and Isle of Man, delivering managed IT, cybersecurity, AI, and Microsoft-based technology solutions through a 280-person team.

Ownership category

akta.pro rank

Product category

Managed IT Services

NAICS

Computer Systems Design and Related Services (54151), Computer Systems Design Services (541512), Computer Systems Design and Related Services (5415), Custom Computer Programming Services (541511)

SIC

Services-Computer Integrated Systems Design (7373), Services-Computer Programming Services (7371), Services-Computer Programming, Data Processing, Etc. (7370)

akta.pro primary industry

Network, Infrastructure & Data Center Integration (BPAEAAAK)

akta.pro secondary industries

Strategy & IT Advisory (BPAEAAAA), IT Governance, Risk & Compliance (IT GRC) Platforms (HDAEALAK), Enterprise Architecture & IT Operating Model (BPAHAEAB), Infrastructure Automation & Configuration Management (IaC) (HDABABAF)

Keywords

• Managed IT services
• IT consulting
• Cybersecurity services
• Cloud infrastructure
• Microsoft solutions

Headquarters

HQ city

St. Helier

Offices3 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Managed IT Services: Ongoing SLA-backed IT services including 24x7x365 monitoring, support desk, cloud management, cybersecurity management, and infrastructure management. Delivered through team of 180+ qualified professionals.
2. Professional Services and Consulting: Advisory, technology implementation, and transformation services including digital strategy, application development, cloud migration, and change management consulting.
3. Microsoft Licensing (CSP): Microsoft Cloud Solution Provider services enabling management of Microsoft licensing, usage, security, and training with flexible monthly billing and potential cost savings of up to 25%.

Pricing tiers

Go-to-market motion2 records

Distribution channels3 records

Marketing channels5 records

Core offering

C5 Alliance provides managed IT services, technology consulting, and cybersecurity solutions to organisations across the Channel Islands (Jersey, Guernsey, Isle of Man). It combines strategic advisory, modern technology implementation, and managed services under a unified Advisory, Technology and Assurance framework, built primarily on the Microsoft ecosystem (Azure, Microsoft 365, Power Platform, Dynamics 365, Microsoft Fabric). Its core offerings include 24x7x365 IT support, cloud and infrastructure management, cybersecurity operations, data and AI platforms, and bespoke application development for regulated industries.

Product overview

C5 Alliance operates as a managed IT services and consulting firm offering an integrated portfolio of Advisory, Technology, and Assurance solutions. Their service layer includes Digital Strategy and Management Consulting, Strategy & Operating Models, Transformation & Change, Training and Adoption, AI & Advanced Analytics, Application Development, Cloud & Infrastructure, Cyber Security, Data Strategy & Platforms, and Managed IT Services. Their product portfolio focuses on Microsoft solutions including Microsoft Business Applications (Dynamics 365, Power Platform), Microsoft Data & Analytics (Azure, SQL Server, Power BI, NavOne Dashboards), Microsoft Windows Desktop Environments (Windows 11, Azure Virtual Desktop, Windows 365), Microsoft Productivity & Collaboration (Teams, SharePoint, Power Automate, Copilot), Microsoft Security & Endpoint Management (Defender suite, Purview, Sentinel, Intune), and a unified Modern Workplace solution. The company acts as a Microsoft Solutions Partner with four competency certifications and serves regulated industries across the Channel Islands (Jersey, Guernsey, Isle of Man).

Differentiator

Problem solved

Functional benefit

Products and services

• Managed IT Services End-to-end managed IT operations including cloud migration, cybersecurity management, modern workplace services, and 24x7x365 support desk; ISO 20000-1 and ITIL-aligned processes delivered by a team of ITIL-trained professionals.
• Cyber Security Services Cyber security advisory, security operations, strategy and implementation including gap analysis, penetration testing, Cyber Essentials certification, and 24x7x365 SOC monitoring.
• Cloud & Infrastructure Services Private cloud infrastructure (Island Cloud), cloud adoption strategy, hybrid cloud deployment, cloud migration, and cloud managed services with 24x7x365 monitoring.
• AI & Advanced Analytics Services AI strategy, Secure GPT and Microsoft Copilot deployment, automation and AI assistants, Microsoft Copilot Studio customisation, and predictive analytics powered by Microsoft Azure AI.
• Application Development Services Bespoke software development, Microsoft Power Platform development (Power Apps, Power Automate, Power BI), and UX/UI design services delivered by certified AI consultants and data scientists.
• Data Strategy & Platforms Services Data strategy and governance, modern data platforms using Microsoft Fabric and Azure, analytics and visualisation with Power BI, in-house Secure GPT, and managed data services.
• Digital Strategy and Management Consulting Management consulting helping business leaders shape pragmatic digital strategies, align IT investments with strategic goals, and build clear paths to digital transformation.
• Strategy & Operating Models Strategic advisory services to define clear outcome-driven strategies aligned to business goals, optimise operating models, and guide transformation delivery.
• Transformation & Change Services Programme and project management, change management, business analysis, and operational improvement services for realising benefits and sustaining lasting change.
• Training and Adoption Services Microsoft 365 training and adoption services covering Excel, Power BI, Copilot, Teams, and e-learning solutions with flexible on-site, virtual, or blended delivery.
• Microsoft Business Applications Microsoft Dynamics 365 (Sales, Customer Service), Power Platform (Power BI, Power Apps, Power Automate, Power Pages), and Microsoft 365 productivity suite implementation and support.
• Microsoft Data & Analytics Azure cloud services, SQL Server database management, Power BI dashboards and reporting, and NavOne Data Dashboards for trust and corporate services firms.
• Microsoft Windows Desktop Environments Windows 11 deployment, Azure Virtual Desktop for cloud-hosted Windows, Windows 365 cloud PC streaming, and physical device deployment with Intune and Defender configuration.
• Microsoft Productivity & Collaboration Microsoft Teams, SharePoint, Power Automate, and Microsoft 365 Copilot implementation; includes Teams Essentials for small businesses and Copilot Studio customisation.
• Microsoft Security & Endpoint Management Microsoft Defender suite (Endpoint, Office 365, Identity, Cloud, Cloud Apps), Microsoft Purview compliance and data governance, Sentinel SIEM/SOAR, and Intune endpoint management.
• Modern Workplace Microsoft 365-based modern workplace solution integrating Teams, SharePoint, Outlook, OneDrive, enterprise device management with Entra ID and Intune, and security with Defender and Purview.
• Co-Managed IT Services Hybrid IT service model combining ITIL-aligned service desk, HALO PSA tooling, and operational governance that augments rather than replaces internal IT teams.
• Microsoft Fabric Real-Time Data Platform Proof-of-concept real-time data platform built on Microsoft Fabric for IoT-based environmental monitoring (humidity, temperature, drainage) with sub-second latency dashboard updates.
• ICCI Digital Broker Portal Digital SME Insurance Broker Portal for the Insurance Corporation of the Channel Islands (ICCI); custom application enabling real-time policy processing, automated underwriting, and broker self-service.

Quantifiable outcome

• IT incidents resolved 5x faster than EMEA average of 45 hours
• +5 more outcomes

Named customers12 records

Segments6 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration13 records

AI capability9 records

Feature4 records

Partnerships

Six partnerships are on record, tiered core, important and minor.

• MicrosoftcoreTechnology or IntegrationTop-tier Microsoft Solutions Partner with 4 competency certifications (Infrastructure Azure, Data & AI, Digital & App Innovation, Security). Only provider in Channel Islands with Managed Partner Status. Provides early access to Microsoft technologies and exclusive product offerings. Supports Microsoft 365, Azure, Dynamics 365, Power Platform, and security solutions.
• HPE (Hewlett Packard Enterprise)coreTechnology or IntegrationHPE Business Partner providing enterprise-grade hardware, infrastructure solutions, and technology partnerships for client environments.
• SophosimportantTechnology or IntegrationSophos Gold Partner providing cybersecurity solutions, endpoint protection, and security tooling for managed services.
• HaloimportantTechnology or IntegrationPartner for IT service management solution (HALO PSA) - the leading ITSM solution and only PSA currently ranking in Gartner. Provided, configured, and operated for clients under Co-Managed IT services.
• BDO JerseycoreStrategic or Co-development PartnerSister technology business to BDO Jersey. Provides global network backing and access to international capabilities while maintaining local expertise in the Channel Islands.
• ALX TrainingminorImplementation/ SI/ Consulting PartnerTraining partner providing practical Microsoft Teams and M365 training sessions to support user adoption for C5 clients.

Scale indicators7 records

Recent moves7 records

Expansion highlights6 records

Direct peers

• Avanade: Joint venture between Accenture and Microsoft focused exclusively on Microsoft technologies, delivering managed services, cloud, and AI/Copilot solutions to enterprise and regulated clients—directly comparable to C5 Alliance's Microsoft-only stack and Copilot/Fabric positioning.
• Logicalis: Global IT solutions and managed services provider with deep Microsoft partnership delivering infrastructure, cloud, cybersecurity, and data services to enterprise clients; comparable to C5's managed IT, cloud infrastructure (Island Cloud analogue), and Co-Managed IT offerings.
• Trustmarque: UK-based IT services and managed services firm delivering Microsoft-centric cloud, security, and modern workplace solutions to mid-market and enterprise customers; directly comparable in service mix and Microsoft emphasis.
• SCC (Apogee): Major UK/European managed services and workplace provider delivering cloud, security, and Microsoft-based solutions across regulated industries; comparable in offering breadth and Microsoft-led stack.
• Softcat: UK IT infrastructure provider and Microsoft partner offering licensing, managed services, cloud, and security; comparable to C5's CSP licensing motion and Microsoft-led enterprise customer base.
• Northdoor: London-based Microsoft-focused IT services firm specializing in data platforms, security, and managed services for financial services and other regulated sectors—comparable C5-style niche on Microsoft in regulated UK-adjacent financial services.
• Bytes Technology: UK IT services and managed services provider with strong Microsoft partnership and enterprise customer base; comparable on Microsoft licensing distribution and managed services delivery.

Others

• BDO Jersey: Sister entity and parent affiliate in Jersey; not a direct competitor but the most structurally related organization, sharing leadership, channels, and customer access in the Channel Islands.

Broad incumbents

• Capgemini: Global IT services and consulting giant delivering digital, cloud, and managed services across regulated industries; a broad incumbent with overlapping capabilities that could credibly target the Channel Islands market.

Regional players

• PwC Channel Islands: Big-4 professional services firm operating in Jersey, Guernsey, and Isle of Man with adjacent IT advisory and managed services practices serving the same regulated clients in the same geography.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat6 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/C5Alliance

Compliance4 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles11 records

Funding overview

Funding rounds

Investors

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 C5 Alliance