Outsourcing IT consulting is often less about handing work off and more about bringing in the expertise a team does not have in-house. UK companies use external consultants for software delivery, cloud infrastructure, legacy modernization, cybersecurity, data projects, and the less glamorous technical work that still has to be done properly.
The companies in this list approach outsourcing from different angles. Some provide full development teams, while others focus more heavily on strategy, architecture, managed services, or specialist engineering. The useful distinction is not simply who offers the longest service list, but where each provider fits when internal resources, technical complexity, or delivery pressure start to become a problem.
1. Itexus
At Itexus, we provide IT consulting outsourcing services for companies in the UK that need outside technical support for software projects, modernization, cloud work, or new digital products. We help define the technical approach before development moves too far – from architecture and integration choices to product discovery, process digitization, and delivery planning. This can be useful when an internal team understands the business problem but needs extra engineering input to decide what should actually be built and how the work should be structured.
We also step into projects that are already running. That may involve reviewing an existing codebase, restoring missing documentation, checking security and stability, or sorting out a development process that has become difficult to manage. Itexus can extend internal teams with engineers, support cloud transition planning, and work on AI implementation where architecture, data requirements, risk, and compliance need to be considered together.
Key Highlights:
- IT consulting outsourcing support for companies in the UK
- Consulting that covers both new software initiatives and existing systems
- Project audits focused on code quality, documentation, security, and stability
- Technical planning for integrations, cloud transitions, and digital transformation
- AI consulting with attention to architecture, data, risk, and compliance
Services:
- IT consulting outsourcing
- Digital transformation consulting
- Software project audit and rescue
- AI consulting and implementation
- Staff augmentation
- Cloud and DevOps consulting
- Product discovery and technical planning
Contact Information:
- Website: itexus.com
- E-mail: [email protected]
- Facebook: www.facebook.com/itexus
- Twitter: x.com/ItexusSoft
- LinkedIn: www.linkedin.com/company/itexus
- Instagram: www.instagram.com/itexus.soft
- Address: 8, The Green, STE road, Dover, DE 19901
2. Akita
Akita provides outsourced IT support and consulting for organisations across the UK, with coverage centred on London, the South East, and surrounding regions. They work with both fully outsourced and co-managed models, so companies can hand over most IT responsibilities or bring Akita in to cover specific gaps. Their scope goes beyond helpdesk support and includes infrastructure, cyber security, cloud environments, networks, and advice on how IT should develop alongside the business.
For companies keeping an internal IT team, Akita can take on third-line support, infrastructure work, out-of-hours coverage, or specialist consulting without replacing existing staff. They also work with Microsoft business systems such as Dynamics 365, SharePoint, and Power Platform, along with cloud and security services.
Key Highlights:
- Fully outsourced and co-managed IT models
- IT consulting and strategy support for UK organisations
- Coverage across infrastructure, cloud, networks, and cyber security
- Support for companies that need extra capacity alongside an internal IT team
- Microsoft business applications and cloud expertise
Services:
- Outsourced IT support
- IT consultancy and strategy
- Third-line and infrastructure support
- Cyber security services
- Managed cloud services
- Network management
Contact Information:
- Website: www.akita.co.uk
- E-mail: [email protected]
- Facebook: www.facebook.com/AkitaSystems
- Twitter: x.com/akita_limited
- LinkedIn: www.linkedin.com/company/akita-limited
- Address: Unit 15 Nepicar Park, London Road, Wrotham, Kent, TN15 7AF
- Phone: 0330 058 8000
3. Infinity Group
Infinity Group works with businesses that want to outsource all or part of their IT operations. Their model combines managed support with IT consultancy, network management, cyber security, cloud services, and Microsoft technologies. Companies can use them as the main IT function or keep an internal team and bring in outside specialists where extra knowledge or capacity is needed.
Microsoft technology sits close to the centre of Infinity Group’s offering, covering Microsoft 365, Azure, SharePoint, and Dynamics 365. They also provide strategic IT planning through dedicated consultants and account management. Security, infrastructure performance, remote working, and digital transformation can all be handled within the same arrangement.
Key Highlights:
- Strong focus on the Microsoft technology stack
- Support available for both complete outsourcing and selected IT functions
- IT roadmapping alongside ongoing technical support
Services:
- Fully managed IT outsourcing
- IT consultancy
- Network and infrastructure management
- Cyber security and GDPR consultancy
- Microsoft 365 support
- Azure consulting
Contact Information:
- Website: www.infinitygroup.co.uk
- E-mail: [email protected]
- Facebook: www.facebook.com/infinityts
- Twitter: x.com/infinitygrouptw
- LinkedIn: www.linkedin.com/company/infinity-technology-solutions-limited
- Address: 6th Floor, 2 Kingdom Street, London, W2 6BD
- Phone: 0330 191 6138
4. Syntax Integration
Syntax Integration delivers IT outsourcing and consulting services for organisations that want external support without using a fixed one-size-fits-all setup. They can take responsibility for day-to-day IT or provide additional resources alongside an existing team.
The outsourcing process at Syntax is structured around assessment, transition, and ongoing management. They also account for the organisational side of changing providers, including situations where responsibilities are moving from an internal team or another supplier. Syntax can support Microsoft 365 and Azure environments, remote working setups, Apple devices, servers, and infrastructure, while dedicated technical account management keeps the wider IT setup connected to business needs.
Key Highlights:
- Flexible support for fully outsourced or supplemented internal IT teams
- Structured transition process when changing IT arrangements
- Support for security and compliance requirements
- Microsoft cloud and workplace capabilities
- Experience handling the operational side of outsourcing changes
Services:
- IT consultancy
- Service desk support
- Microsoft 365 services
- IT support and outsourcing
- Microsoft Azure services
- IT security and compliance
Contact Information:
- Website: www.syntax.co.uk
- E-mail: [email protected]
- Address: 15-16 Seymour Mews, London W1H 6BG, United Kingdom
- Phone: 020 7307 5008
5. A-listware
A-listware offers IT consulting and outsourcing services for companies in the UK that need outside technical teams, individual specialists, or broader responsibility for IT delivery. They support several cooperation models, including staff augmentation, autonomous development teams, full-service outsourcing, and co-sourcing with an existing IT department. Their consulting scope connects software development with infrastructure, cloud services, cybersecurity, quality assurance, and digital transformation.
Beyond development capacity, A-listware can help plan new IT work, review how technology supports business operations, and manage areas that require specialist knowledge. They work across technologies such as AI, data science, IoT, computer vision, blockchain, and cloud platforms, while their delivery setup also covers DevOps and IT service management. Clients retain ownership of the development process, which makes the model suitable for businesses that want outside resources without giving up control of how the work is organised.
Key Highlights:
- Full outsourcing, co-sourcing, and staff augmentation models
- Support for both ongoing IT operations and new technology work
- Coverage of infrastructure, security, cloud, QA, and software development
- Ability to work alongside other technology vendors
- Consulting linked with newer areas such as AI, data science, and IoT
Services:
- IT consulting
- IT outsourcing
- Staff augmentation
- Software development outsourcing
- Managed IT services
- Infrastructure services
- Cloud services
- Cybersecurity
- QA and software testing
Contact Information:
- Website: a-listware.com
- E-mail: [email protected]
- Facebook: www.facebook.com/alistware
- LinkedIn: www.linkedin.com/company/a-listware
- Address: St. Leonards-On-Sea, TN37 7TA, UK
- Phone: +44 (0)142 439 01 40
6. Avance Consulting
Avance Consulting approaches IT outsourcing mainly through access to technical professionals who can join and extend a client’s existing technology function. They work with companies in the UK through their London presence and recruit across roles such as software engineering, network administration, IT management, data science, and cybersecurity.
Their involvement can continue after recruitment as well. Avance Consulting provides HR, finance, quality, and process support around outsourced teams, helping external specialists settle into the client’s working environment and remain connected to day-to-day operations. This makes their model closer to managed technical staffing than handing an entire technology function to a separate provider.
Key Highlights:
- Access to specialists across software, infrastructure, data, and security
- Outsourced professionals can be integrated into existing client teams
- HR and operational support provided alongside technical staffing
Services:
- Technical staff outsourcing
- IT outsourcing
- Software engineering resources
- Network and infrastructure specialists
- Data science professionals
Contact Information:
- Website: avanceservices.com
- E-mail: [email protected]
- Facebook: www.facebook.com/AvanceHR
- LinkedIn: www.linkedin.com/company/avance-services
- Instagram: www.instagram.com/avanceconsultingservices
- Address: 1-2 Paris Garden, SE1 8ND, United Kingdom.
- Phone: +44 203 053 4281
7. GLOBAX TECHNOLOGY
GLOBAX TECHNOLOGY is a IT services company that handles outsourced technology work ranging from software development to the management of wider IT environments. They can take over selected technical responsibilities or provide broader operational support.
Companies using GLOBAX TECHNOLOGY can also bring in outside IT expertise when internal staff need to stay focused on other business areas. Their outsourcing model is built around adjusting technical resources as requirements change rather than maintaining every skill internally. Software, hardware, data storage, digital security, and IT support sit within the same service range, which can reduce the need to coordinate several separate suppliers for connected IT tasks.
Key Highlights:
- UK-based provider of IT outsourcing and technology services
- Outsourcing can cover individual IT functions or wider operations
- Combination of software, infrastructure, support, and security services
- Technical capacity can be adjusted as business requirements change
- Support for both ongoing system management and technology development
Services:
- IT consulting
- IT outsourcing
- Software development
- IT infrastructure management
- System maintenance
- Support desk services
- Digital security
Contact Information:
- Website: globax.uk
- E-mail: [email protected]
- Facebook: www.facebook.com/GlobaxTeknoloji
- Twitter: x.com/GlobaxTech
- LinkedIn: www.linkedin.com/company/globaxtechnology
- Instagram: www.instagram.com/globaxtech
- Address: 25 Town Square, Stevenage, SG1 1BP, England, United Kingdom
- Phone: +44 20 3286 5577
8. Proxar
Proxar provides IT outsourcing and consulting services for businesses across the UK, with a strong presence in London. They can take over day-to-day IT management, provide outsourced support, manage infrastructure, or step in as an external IT representative when a business needs technical guidance without building a larger internal team.
Their contracts are designed around the level of support a company actually needs, from ongoing maintenance to round-the-clock assistance. Proxar also covers cloud security, infrastructure management, office moves, and IT consultancy, which gives businesses the option to keep several connected IT functions under one provider.
Key Highlights:
- Flexible contracts that can change as IT requirements develop
- Initial assessment of the existing IT environment before transition
- Coverage of infrastructure, cloud security, and outsourced support
Services:
- IT outsourcing
- IT consultancy
- Outsourced IT management
- IT support outsourcing
- Cloud security outsourcing
- IT office move outsourcing
- IT representation outsourcing
Contact Information:
- Website: www.proxar.co.uk
- E-mail: [email protected]
- Address: Unit 1, 205 London Rd, Sevenoaks, Kent, TN13 1DW
- Phone: 0203 196 6566
9. Valto
Valto handles outsourced IT support for businesses that want to move either all or part of their technology management outside the company. Their team can provide remote support, onsite assistance, managed services, and infrastructure consulting, while dedicated account managers remain involved in the ongoing relationship. They also review existing hardware, software, and networks before recommending changes, which gives the outsourcing arrangement a clearer technical starting point.
Microsoft tools form a large part of Valto’s wider service range, including Azure, Microsoft 365, Power Platform, SharePoint, Teams, and security products. Businesses can therefore combine everyday IT support with cloud work, infrastructure planning, automation, and Microsoft consulting rather than treating each area separately.
Key Highlights:
- Option to outsource a complete IT function or only selected areas
- Remote and onsite technical support
- Existing systems are reviewed before support plans are developed
- Dedicated account management with longer-term infrastructure planning
- Microsoft-focused consulting across cloud, workplace, and business applications
Services:
- Outsourced IT support
- Managed IT services
- Remote IT support
- Onsite IT support
- IT infrastructure consulting
- Managed cloud services
- Microsoft 365 consulting
Contact Information:
- Website: valto.co.uk
- E-mail: [email protected]
- LinkedIn: www.linkedin.com/company/valto-ltd
- Address: Kemp House, 152 – 160 City Road, London, EC1V 2NX
- Phone: +44 (0)1244 7477129
10. Opus Tech
Opus Tech delivers outsourced IT support and consultancy for SME and mid-market organisations in the UK. They allow businesses to outsource as much or as little of the IT function as needed, covering areas such as technical support, networks, cloud infrastructure, cybersecurity, backup, and continuity planning.
Opus Tech works across platforms from Microsoft, Cisco Meraki, Mimecast, Acronis, and other providers. Their consulting work also covers IT strategy and roadmapping, so outsourced support can include planning for future infrastructure and security changes rather than dealing only with current faults. Managed cloud, disaster recovery, business continuity, and cyber compliance can sit alongside general IT support.
Key Highlights:
- Outsourced IT and consultancy services for UK SME and mid-market organisations
- Flexible model for partial or full IT outsourcing
- Strategic IT roadmapping alongside ongoing support
- Coverage of cybersecurity, compliance, continuity, and infrastructure
- Dedicated account management for ongoing service coordination
Services:
- Outsourced IT support
- Managed IT infrastructure
- IT consultancy
- Managed cloud services
- Cybersecurity consultancy
- Cyber Essentials support
Contact Information:
- Website: www.opustech.co.uk
- Address: 2nd Floor, 63 Saint Mary Axe, London, EC3A 8AA
- LinkedIn: uk.linkedin.com/company/opustechnology
- Phone: 0800 316 7566
11. Focus Group
Focus Group provides outsourced IT support and consulting for businesses across the UK that want either additional capacity around an internal IT team or external management of a larger part of their technology environment. Their scope covers technical support, data management, cyber security, infrastructure, cloud services, and digital transformation.
IT consulting sits alongside the managed support offering rather than being treated as a separate service. Focus Group consultants can review existing technology, identify where new systems or integrations may help, and shape IT plans around wider business goals. Security work can include monitoring, threat detection, incident response, compliance support, and staff awareness, while data services cover storage, backup, access, and management.
Key Highlights:
- Full outsourcing or additional capacity for existing IT teams
- IT consulting connected with infrastructure and digital transformation
- Remote support with onsite engineering when required
- Data management and cyber security covered within the wider service
- Dedicated account management and support case tracking
Services:
- Outsourced IT support
- IT consulting
- Technical support
- Data management
- Cyber security
- Cloud services
- IT infrastructure support
Contact Information:
- Website: focusgroup.co.uk
- E-mail: [email protected]
- Facebook: www.facebook.com/focusgrp.uk
- Twitter: x.com/focusgrp_uk
- LinkedIn: www.linkedin.com/company/focus-group-uk
- Instagram: www.instagram.com/thisisfocusgroup
- Address: Unit 1 Elstree Way, Borehamwood WD6 1JD, United Kingdom
- Phone: +44 20 3819 3300
12. eSaloni
eSaloni works across IT services, consulting, software testing, business intelligence, governance, risk, and compliance. Their outsourcing offer is less centred on taking over a helpdesk and more on supplying technical services and resources that companies may not want to maintain internally. eSaloni provides talent enablement and resource recruitment, giving businesses another way to add specialist capacity without building every capability in-house. Cloud-based solutions and managed testing also sit within their service range. The combination makes them closer to a consulting and technical resource provider than a traditional managed IT support company.
Key Highlights:
- Combination of technical outsourcing and resource support
- Coverage of software testing, business intelligence, and GRC
- Cloud-based solutions available alongside consulting services
- Resource recruitment for companies needing additional technical skills
Services:
- Consulting services
- Software testing
- IT services
- Managed testing
- Business intelligence services
- GRC services
Contact Information:
- Website: esaloni.co.uk
- E-mail: [email protected]
- Address: SPACES Office 244, Building 1, Chalfont Park, Gerrards Cross SL9 0BG
- Phone: 01753 972473
13. Pulsion Technology
Pulsion Technology focuses its outsourcing work on software development rather than general office IT support. UK companies can outsource an entire software build, add a dedicated development team, or bring in individual developers to work alongside existing staff. Their involvement can start with discovery and requirements gathering and continue through design, development, testing, deployment, and maintenance.
Different engagement models allow Pulsion Technology to fit around the level of internal capability already available. Their technical scope covers custom software, mobile and web applications, APIs, cloud computing, software integration, machine learning, UI/UX, and enterprise systems. They also provide digital strategy consulting, so outsourcing can begin before coding when the technical direction still needs to be worked out.
Key Highlights:
- Work can cover the full software lifecycle from discovery to maintenance
- Suitable for companies that need specialist development skills without permanent hiring
- Digital strategy and requirements work can be included before development
- Coverage of cloud, integrations, machine learning, and enterprise software
- Dedicated team options for longer software engagements
Services:
- Software development outsourcing
- Custom software development
- Digital strategy consulting
- Dedicated development teams
- Mobile app development
- Web app development
- API development
Contact Information:
- Website: www.pulsion.co.uk
- E-mail: [email protected]
- LinkedIn: www.linkedin.com/company/pulsion-technology
- Address: 5 Eagle Street, Craighall Business Park, Glasgow, G4 9XA
- Phone: +44 (0)141 352 2280
14. Adecco
Adecco approaches outsourcing from a workforce and business-process angle rather than as a traditional managed IT consultancy. In the UK, they provide outsourced teams and employed consultants that can support organisations needing additional people, operational capacity, or specialist skills. IT is one of the sectors they work with, so the model can fit companies that need external technology professionals without expanding permanent headcount.
Their outsourcing structure also covers business process outsourcing and ongoing workforce management. Adecco handles recruitment, employment, and support around the outsourced workforce, while clients retain access to people who work within their operations. For IT departments, this is more relevant to resourcing and delivery capacity than to handing over infrastructure, cloud, or software strategy to a dedicated technical consultancy.
Key Highlights:
- IT is one of the industries covered by their workforce services
- Employed consultants can be added to existing business and technology teams
- Recruitment and workforce management sit within the outsourcing model
Services:
- Employed consultancy
- Business process outsourcing
- IT workforce outsourcing
- Talent sourcing and recruitment
- Workforce management
- Industrial process outsourcing
Contact Information:
- Website: www.adecco.com
- E-mail: [email protected]
- Facebook: www.facebook.com/AdeccoIN
- Twitter: x.com/adeccoin
- LinkedIn: www.linkedin.com/company/adecco
- Instagram: www.instagram.com/adeccoin
- Address: 10 Bishops Square, London E1 6EG
- Phone: +44 20 7300 9000
15. Square Root Solutions UK
Square Root Solutions UK concentrates on software development outsourcing from its London-based delivery setup. They can provide a complete development team, extend an existing engineering department, or supply individual developers when a company is missing a particular technical skill. Before development starts, their process covers discovery, technical consulting, resource planning, and requirements work.
Software can then be handled through design, development, testing, deployment, documentation, and post-launch support. Square Root Solutions UK works across web and mobile applications, SaaS platforms, APIs, cloud systems, legacy modernisation, and AI or machine learning development. Teams work in sprints with regular reviews, while companies can choose between staff augmentation, dedicated teams, and fully managed delivery depending on how much responsibility they want to keep internally.
Key Highlights:
- Technical consulting and discovery before development
- Staff augmentation, dedicated team, and fully managed engagement models
- Support for new products as well as legacy system modernisation
- Sprint-based development with regular reviews and documentation
- Post-launch support available after deployment
Services:
- IT and technical consulting
- Dedicated development teams
- Staff augmentation
- Software development outsourcing
- Custom software development
- SaaS development
- Mobile and web development
Contact Information:
- Website: square-root.co.uk
- E-mail: [email protected]
- Facebook: www.facebook.com/squareroot.ie
- Twitter: x.com/squareroot_ie
- LinkedIn: www.linkedin.com/company/square-root-solutions
- Address: 55 Lordship Rd, London N16 0QJ, United Kingdom
- Phone: +44 20 3468 8802
Conclusion
IT consulting outsourcing in the UK covers quite a wide range of needs. Some companies focus on managed support, infrastructure, cloud, and cyber security, while others are closer to software development partners or specialist staffing providers. That difference matters. A business looking for help with day-to-day IT operations will need a very different setup from one that wants to outsource product development, modernise legacy software, or add a few experienced engineers to an internal team.
The sensible choice comes down to scope, ownership, and how closely the provider needs to work with the existing team. It is worth looking beyond the service list and checking how each company handles transition, communication, security, documentation, and ongoing support. Outsourcing works better when responsibilities are clear from the start and the external team fits the way the business already operates.