We share rankings of the top IT services companies in the United Kingdom that provide a broad range of services to support the IT needs of organizations of all types and sizes. Check out their agency profiles, client reviews, past projects, expertise, rates and more to find the most qualified company that can meet your unique requirements and budget.

We Compiled The Best United Kingdom IT Support Companies For You

6 Companies - Rankings updated: September 05, 2026

DesignRush evaluates each agency using expert assessment and client feedback to inform your choices. Some featured agencies have paid placements.

Software & IT Services
$50,000 & Up
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United Kingdom × Software & IT Services × $50,000 & Up × Clear Filters

  • Andersen

    FinTech Unleashed: React Native Excellence by Andersen

    Andersen has provided IT and software development services for 19 years. It has completed 2,000+ projects for clients like Samsung and TUI, with 98% retention. The agency is best for enterprises needing staff augmentation or legacy modernization...

    Top Services:

    • Software Development
    • Web Development
    • UI/UX Design
    • Mobile App Development
    • Product Design
    • Show more
    Location
    London, United Kingdom
    Number of Employees
    1000 & Up
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    18 Projects Listed

    Andersen Services

    • Software Development
    • Web Development
    • UI/UX Design
    • Mobile App Development
    • Product Design
    • AI Development
    • IT Services
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • GlobePayroll
    • Samsung
    • Marvel
    • Media Markt
    • IHS Markit
    Data sourced from the agency's DesignRush profile

    Andersen Reviews & Testimonials

    • Kristian Karimo
      Kristian Karimo CEO at OurCnC
      5.0 ★

      HTML5 Review from Kristian Karimo

      Andersen offers skilled project managers who adhere to the approved development plan, ensuring the implementation of all functionalities on time. It generates clear reports, exhibits excellent communication, and is English fluent. The client communicates with Andersen via Skype and Slack and uses Jira as a tracking system. Andersen organizes the processes well and performs correctly. Its team is always punctual and dedicated to the project. Andersen helped in improving the client's product.

    • Markus Bohl
      Markus Bohl Founder & Advisory Board Member at Laya Technologies
      5.0 ★

      Software Development Review from Markus Bohl

      Andersen has a confident project manager who came through professionally and neatly structured the process. Anderson provided the client with individual resources that are a part of a larger, mostly remote team. With these resources, the client builds the initial product and brings it to a sales-ready stage so that it can be used with clients. Andersen helped with UI/UX design, software development, and Python backend development services (Verified via email)

    • Adalin Cheng
      Adalin Cheng Enterprise Solutions Architect at Neo-Bank
      5.0 ★

      Software Development Review from Adalin Cheng

      One of the most impressive things about Andersen Lab is that the entire team [is fully dedicated] to [the] work they are doing. In the Agile process, where decisions are changed rapidly [...], [the] Andersen Lab team used to react patiently to every single change. Although the teams task is mostly implementation of our requirements, they often [go] the extra mile and [are involved] in the ideation process as well. (Verified via email)

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
    Visit Website View Profile
    4.6 4.6 (4)

  • Intellectsoft

    We integrate, innovate, and elevate enterprise systems.

    Intellectsoft has provided custom software development since 2007. It has built products for 35 Fortune 500 clients, including Disney, Audi, and Eurostar. The IT agency in the UK suits enterprises needing custom software or dedicated development teams...

    Top Services:

    • Software Development
    • Mobile App Development
    • Wearables
    • Software Testing
    • Blockchain
    • Show more
    Location
    London, United Kingdom
    Number of Employees
    100 - 249
    Average Hourly Rate
    $80/hr
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    12 Projects Listed

    Intellectsoft Services

    • Software Development
    • Mobile App Development
    • Wearables
    • Software Testing
    • Blockchain
    • AI Development
    • UI/UX Design
    • Big Data Analytics
    • IT Services
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Harley-Davidson
    • the London Stock Exchange
    • Ernst & Young
    • Qualcomm
    • Bombardier
    Data sourced from the agency's DesignRush profile

    Intellectsoft Reviews & Testimonials

    • Harshal Chhajed
      Harshal Chhajed Undisclosed at Undisclosed
      4.5 ★

      Software Development Review from Harshal Chhajed

      They have highly skilled support staff for faster resolution which leads to customer satisfaction. Also, it has many features including IoT and blockchain apart from regular software development. If there are any changes in the scope of the project at a later stage, it can prove quite costly and also difficult to accommodate last-minute client-side scripting changes. They are versatile, cost-effective, and offer quick customer support. They offer a very customized software development tool where business needs can be addressed. It is very cost-optimized and hence can help generate good returns for business investment.

    • Vitaly Dyachenko
      Vitaly Dyachenko CEO and Founder at UppLabs LLC
      5.0 ★

      Software Development Review from Vitaly Dyachenko

      Intellectsoft provided a great partnership by delivering quality services and working fast. They helped us to accomplish all the clients' projects on time. The team communicated transparently and showed [] great dedication. They were an ideal partner! (Verified via email)

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
    Visit Website View Profile
    4.3 4.3 (2)

  • Smartym Pro

    Smartym Pro has provided custom software development since 2012. It has completed 80+ projects, including a sales enforcement tool for Heineken sellers. The agency suits startups and enterprises needing mobile, web, or blockchain development...

    Top Services:

    • Software Development
    • Mobile App Development
    • Staff Augmentation
    • Blockchain
    • IT Services
    • Show more
    Location
    London, United Kingdom
    Number of Employees
    50 - 99
    Average Hourly Rate
    $45/hr
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    9 Projects Listed

    Smartym Pro Services

    • Software Development
    • Mobile App Development
    • Staff Augmentation
    • Blockchain
    • IT Services
    • Web Development
    • Software Testing
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Coach-Apps
    • Heineken
    • Automagic
    • Pepsico
    • Sony (retailers)
    Data sourced from the agency's DesignRush profile

    Smartym Pro Reviews & Testimonials

    • Shaun Bennie
      Shaun Bennie Director at in5pire
      5.0 ★

      Software Development Review from Shaun Bennie

      Co-funding’s collaboration with Smartym Pro began from discovery stage and design services for our online investor automation platform. In these initial stages Smartym demonstrated great skill and aptitude which convinced us to appoint them for the full MVP development part of the project. Smartym Pro’s team offered their vision to improve the quality of the delivered product. They met all deadlines and were keen to give great advice. It was a pleasure to work with Smartym Pro’s team.

    • Aleksander Stepanowicz
      Aleksander Stepanowicz CFO, co-founder at D-Factor Sp. z o.o.
      4.8 ★

      Outsourcing Review from Aleksander Stepanowicz

      The Smartym Pro’s team has solid experience in development of web/mobile apps, blockchain platforms and smart contracts. We collaborate with Smartym Pro since June 2018 on 4 projects and are satisfied so far. The team is aware of cutting edge trends in emerging technologies and demonstrate willingness to contribute to the projects in an informal and creative way. And what is very important for us they tend to meet deadlines.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
    Visit Website View Profile
    4.4 4.4 (2)

  • Xenoss

    Building Complex Data-Centric Solutions

    Xenoss is an NYC-based MarTech/AdTech software development company...

    Top Services:

    • Software Development
    • AI Development
    • Cybersecurity
    • IT Services
    • Show more
    Location
    London, United Kingdom
    Number of Employees
    100 - 249
    Average Hourly Rate
    $55/hr
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    3 Projects Listed

    Xenoss Services

    • Software Development
    • AI Development
    • Cybersecurity
    • IT Services
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Havas
    • Intercom
    • Telefonica
    • Sizmek
    • Dentsu
    • Video Intelligence
    • Kochava
    • Smaato
    • PowerLinks
    Data sourced from the agency's DesignRush profile
    Visit Website View Profile
    5.0 5.0 (1)

  • Opinov8

    Globally Recognized Digital and Engineering Solutions Partner.

    Named Best AI Company and Software Development Company by The Netty Awards, Opinov8 is a global technology firm with development hubs across the United States, Europe, and Egypt...

    Top Services:

    • Software Development
    • Mobile App Development
    • UI/UX Design
    • Web Development
    • Big Data Analytics
    • Show more
    Location
    London, United Kingdom
    Number of Employees
    250 - 499
    Average Hourly Rate
    $42/hr
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    3 Projects Listed

    Opinov8 Services

    • Software Development
    • Mobile App Development
    • UI/UX Design
    • Web Development
    • Big Data Analytics
    • Staff Augmentation
    • Cloud Consulting
    • DevOps Consulting
    • IT Services
    • AI Development
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Renault
    • WELD Health
    • Hastee
    • Instamotion
    • HR DataHub
    • Beacon
    • United Language Group
    • German Society for International Cooperation
    Data sourced from the agency's DesignRush profile
    Visit Website View Profile
    5.0 5.0 (6)

  • Persistent

    See Beyond, Rise Above.

    Persistent Systems, a renowned global leader in software product development and technology services. Delve into our innovative offerings to stay ahead in the ever-evolving landscape of technology...

    Top Services:

    • AI Development
    • Software Development
    • Web Development
    • Mobile App Development
    • Blockchain
    • Show more
    Location
    London, United Kingdom
    Number of Employees
    1000 & Up
    Average Hourly Rate
    $100/hr
    Minimal Budget
    $50,000 & Up

    Persistent Services

    • AI Development
    • Software Development
    • Web Development
    • Mobile App Development
    • Blockchain
    • Cybersecurity
    • Managed Services
    • IT Services
    • Big Data Analytics
    • Cloud Consulting
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • GB Bank
    • Qapita
    • Vermont
    Data sourced from the agency's DesignRush profile

    Persistent Reviews & Testimonials

    • Sundeep Patel
      Sundeep Patel Review from Google
      5.0 ★

      Sundeep Patel's Review Sourced from Google

      Persistent Systems Ltd is a global software company that provides innovative software solutions to clients worldwide. The Bhageerath office is one of the company's offices located in Pune, India. As an employee of Persistent Systems Ltd, I have had the opportunity to work at this office and experience its work culture, facilities, and environment. Work Culture: The work culture at Persistent Systems Ltd Bhageerath office is excellent. The company values its employees and provides a supportive environment that encourages creativity, innovation, and collaboration. The office has an open-door policy, and employees are encouraged to share their ideas and opinions freely. The management is approachable and provides ample opportunities for career growth and development. Facilities: The Bhageerath office has excellent facilities that cater to the needs of its employees. The office is spacious and well-equipped with state-of-the-art technology and infrastructure. The office has a modern cafeteria that serves a variety of delicious food and beverages. The office also has a gymnasium, a recreation room, and a meditation center, which are available to employees to use during their free time. Environment: The environment at Persistent Systems Ltd Bhageerath office is conducive to work. The office is located in a peaceful and quiet area, away from the hustle and bustle of the city. The office is surrounded by lush greenery and has a beautiful view of the nearby hills. The office has an eco-friendly policy and encourages its employees to adopt sustainable practices. Employee Experience: As an employee of Persistent Systems Ltd Bhageerath office, my experience has been excellent. The company provides a supportive and inclusive work environment that values its employees. The facilities and amenities provided by the company are top-notch, which makes it a great place to work. The company also provides ample opportunities for career growth and development. Conclusion: In conclusion, Persistent Systems Ltd Bhageerath office is a great place to work. The work culture is excellent, and the company values its employees. The facilities and amenities provided by the company are top-notch, which makes it a comfortable and enjoyable place to work. The environment is conducive to work, which makes it an ideal location for an office. Overall, it is a highly recommended place to work.

    • Harshad N
      Harshad N Review from Google
      5.0 ★

      Harshad N's Review Sourced from Google

      Well known IT company in Pune. Founded and managed by Dr Deshpande. Persistent family known for their social service along with the core business in IT sector..

    • Praveen Soni
      Praveen Soni Review from Google
      5.0 ★

      Praveen Soni's Review Sourced from Google

      One of the best IT company in pune. Location and offices are best. Personally I likes the name of buildings.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
    Visit Website View Profile
    4.6 4.6 (730)

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Why Companies Trust DesignRush

Rated 4.8 on Google and 4.7 on Trustpilot, DesignRush Agency Directory is a reliable resource for finding IT services companies in the United Kingdom. We owe this to our executive selection team, which follows a strict screening process when featuring agencies on the platform, assessing key performance indicators, like portfolio, client reviews, and industry reputation.

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Agencies can also reach out to DesignRush and must go through the verification process prior to being listed.

Frequently Asked Questions

What are the core specializations of IT services companies in the United Kingdom?

IT services companies in the United Kingdom offer a full suite of digital transformation and operational support services, focused on accelerating business growth, ensuring regulatory compliance, and strengthening security. In addition to core functions like managed IT, cloud hosting, and help desk support, key specializations include: 

  • IT consulting 
  • Digital strategy 
  • Managed security services (MSS) 
  • Cloud services 
  • Network infrastructure and unified communications 
  • Data backup and recovery 
  • System modernization 

What certifications should an IT support company have?

For IT support companies, certifications signal adherence to global and local best practices. ISO/IEC 27001 is essential, crucial for complying with the UK's high data protection standards, including GDPR. Staff-level certifications like ITIL Foundation are also important, as well as Cyber Essentials for cybersecurity.  

For assessing technical proficiency, look for vendor accreditations like Microsoft Gold Partner or high-level certifications like CISSP (Certified Information Systems Security Professional) for senior staff. 

What information do I need to provide to an IT services company?

To initiate a successful partnership with an IT services company, you must be prepared to share detailed information across three critical tiers. Initially, outline your business context: including key growth objectives, the total count of users and endpoints, budget constraints, and a clear list of current IT challenges or 'pain points.' 

Secondly, you’ll need to supply technical documentation, i.e., a complete inventory of hardware, existing licensed software and their keys, a network topology map, and details on any critical legacy systems. Lastly, you'll need to provide a statement of all mandatory compliance requirements and the necessary access credentials for core systems, such as firewalls, cloud tenants, and primary servers. 

What factors affect IT services agency pricing?

Pricing for IT services in the UK is heavily influenced by the scope and inherent complexity of the required support, which determines the necessary staffing and skillset. Factors that directly impact costs include: the size and scale of the organization (number of users and managed devices), the stringency of the Service Level Agreement (SLA) required, especially for 24/7 or mission-critical support, and the technical maturity of the existing IT estate. 

Additionally, stringent regulatory compliance will increase pricing, as well as the agency's location within the UK (London-based services typically cost more due to higher labor rates). 

What questions should I ask United Kingdom IT support company before hiring?

Before committing to a United Kingdom IT support company, pose these questions to thoroughly assess its suitability, expertise, and operational alignment with your business: 

  1. What are your guaranteed response and resolution times as per your Service Level Agreement (SLA)? 
  2. How do you ensure full compliance with GDPR and other UK-specific data protection legislation? 
  3. Do you operate a 24/7/365 UK-based service desk or is support outsourced after hours? 
  4. What is your defined process for handling a high-priority cyber-security incident or major outage? 
  5. Can you provide an example of how you've helped a client leverage cloud technology for a business outcome? 
  6. How frequently do you conduct proactive security testing, patching, and hardware life-cycle reviews? 

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