Top 100 IT Services Companies in the United Kingdom

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Top 100 IT Services Companies in the United Kingdom

The Best of February 2025
IT services form the foundation of contemporary businesses. Today, a company's operations entirely rely on computer systems and software, which streamline processes for better efficiency. 
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List of the Best United Kingdom IT Companies

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  • 2
    (51 Reviews) 4.9

    Timeliness

    4.7

    Service Excellence

    4.8

    Value

    4.6

    Would Recommend

    4.9
    $50,000+
    1,000 - 9,999 employees
    Basingstoke, England
    Launched in 1999, Software Mind is an IT strategy consulting company. Their large team is headquartered in Kraków, Poland; Warszawa, Poland; Rzeszów, Poland and Bielsko-Biała, Poland and offers IT strategy consulting, cloud consulting & SI, Cybersecurity, Custom Software Development, and more.
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    Clients

    Backbase Baillie Gifford Branch Callcredit

    Industries

  • 3
    (123 Reviews) 4.9

    Timeliness

    4.8

    Service Excellence

    4.8

    Value

    4.6

    Would Recommend

    4.9
    $50,000+
    1,000 - 9,999 employees
    London, England

    Andersen is an international custom software development company that, among other things, specializes in healthcare software development. Since its founding in 2007, the company has opened more than ten development centers and about ten sales offices worldwide. More than 2700 highly qualified specialists work on developing, customizing corporate IT solutions, web applications, and mobile applications. Andersen has completed over 950 projects and received hundreds of positive reviews from clients worldwide. Today the company is working on over 250 projects. Our technology stack includes .NET, C#, Java, Python, PHP, Node.js, TypeScript, Golang, C++, JavaScript, Angular, React.js, Vue.js, HTML, CSS, Java (Android), Swift / Objective C (iOS), React Native, and more. We also offer manual and automated testing, business and data analysis, UI/UX design, DevOps services, IT security management, and L1, L2, L3 support.

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    Clients

    Samsung

    Industries

  • 4
    (28 Reviews) 4.9

    Timeliness

    4.9

    Service Excellence

    4.9

    Value

    4.8

    Would Recommend

    4.9
    Undisclosed
    50 - 249 employees
    Farnborough, England
    Foresite Cybersecurity, a Cybersecurity company, was founded in 2013. They are in Overland Park, Kansas and Farnborough, England and have a midsize team. Their services include Cybersecurity, Compliance Consulting, cloud consulting & SI, and IT managed services.
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    Industries

  • 5
    (80 Reviews) 4.6

    Timeliness

    4.5

    Service Excellence

    4.6

    Value

    4.6

    Would Recommend

    4.6
    $5,000+
    1,000 - 9,999 employees
    London, England

    Despite only being around since 2002, Dotsquares has nearly 1000 employees across the UK, UAE, US, Australia, India, and France. They offer a staggering variety of services, including web, app, game, and e-commerce development and IT consulting and support.

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    Clients

    Ericsson

    Industries

  • 6
    (29 Reviews) 4.8

    Timeliness

    4.7

    Service Excellence

    4.8

    Value

    4.6

    Would Recommend

    4.9
    $50,000+
    1,000 - 9,999 employees
    London, England
    ELEKS is a custom software development firm. The large team is located in Tallinn, Estonia; L'viv, Ukraine; Berlin, Germany and Rzeszów, Poland. Their services include Custom Software Development, Artificial Intelligence, cloud consulting & SI, Cybersecurity, and more.
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    Clients

    BNY Mellon DPD Acino DRAX

    Industries

  • 7
    (17 Reviews) 4.6

    Timeliness

    4.6

    Service Excellence

    4.8

    Value

    4.4

    Would Recommend

    4.8
    $5,000+
    50 - 249 employees
    London, England
    Located in London, England and Düsseldorf, Germany, Transputec Ltd is a Cybersecurity company. The midsize agency was launched in 1986. Their services include Cybersecurity, IT managed services, Artificial Intelligence, cloud consulting & SI, and more.
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    Industries

  • 8
    (19 Reviews) 4.7

    Timeliness

    4.6

    Service Excellence

    4.6

    Value

    4.3

    Would Recommend

    4.9
    $50,000+
    250 - 999 employees
    London, England
    Opinov8 Digital and Engineering Solutions is a software development company. Established in 2017, the team focuses on Custom Software Development, BI & big data consulting & SI, cloud consulting & SI, and Enterprise App Modernization. Their midsize firm is in London, England; Kyiv, Ukraine; Cairo, Egypt and Weybridge, England.
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    Clients

    Fortune 500 Companies

    Industries

  • 9
    (50 Reviews) 4.9

    Timeliness

    4.9

    Service Excellence

    4.9

    Value

    4.8

    Would Recommend

    4.9
    $10,000+
    250 - 999 employees
    London, England

    TkXel is a mobile app and web development company founded in 2007. With its headquarters in Reston, Va., and an office in Lahore, Pakistan, they have a team of 318 employees. Their services include mobile app development, web development, and custom software development. They primarily serve small and midmarket clients. 

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    Clients

    ABB

    Industries

  • 10
    (34 Reviews) 4.8

    Timeliness

    4.7

    Service Excellence

    4.7

    Value

    4.3

    Would Recommend

    4.9
    $100,000+
    1,000 - 9,999 employees
    London, England
    N-iX, an IT staff augmentation company, was launched in 2002. The agency provides IT staff augmentation, Custom Software Development, BI & big data consulting & SI, Artificial Intelligence, and more and has a large team. The agency is located in North Miami Beach, Florida; Malmö, Sweden; North Miami Beach, Florida and Kraków, Poland.
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    Clients

    Bosch Siemens eBay Total Energies

    Industries

  • 11
    (39 Reviews) 4.9

    Timeliness

    4.9

    Service Excellence

    4.9

    Value

    4.8

    Would Recommend

    5.0
    $25,000+
    1,000 - 9,999 employees
    London, England

    Founded in 1998 in Denver, Itransition now has multiple offices in the U.S., U.K., E.U., and locations in eastern Europe housing more than 2,200 employees. They help power enterprises and SMBs globally with their digital solutions in the areas of business process automation, AI, data analytics, customer experience, and others. 

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    Clients

    Expedia

    Industries

  • 12
    (2 Reviews) 5.0

    Timeliness

    5.0

    Service Excellence

    5.0

    Value

    5.0

    Would Recommend

    5.0
    $10,000+
    50 - 249 employees
    Coventry , England
    In Saint Helier, Jersey; St Peter Port, Guernsey; Coventry , United Kingdom and Leicester , United Kingdom, Calligo is a cloud consulting & SI company. They offer cloud consulting & SI, Artificial Intelligence, and BI & big data consulting & SI and were established in 2010.
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    Clients

    Microsoft

    Industries

  • 13
    (12 Reviews) 4.7

    Timeliness

    4.5

    Service Excellence

    4.6

    Value

    4.7

    Would Recommend

    4.8
    $75,000+
    1,000 - 9,999 employees
    London, England
    NashTech is a custom software development firm. Launched in 2000, the large firm is headquartered in London, England; Wayne, New Jersey; Sydney, Australia and Singapore, Singapore. Their services include Custom Software Development, cloud consulting & SI, Generative AI, Digital Engineering, and more.
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    Industries

  • 14
    (13 Reviews) 4.8

    Timeliness

    4.7

    Service Excellence

    4.7

    Value

    4.3

    Would Recommend

    5.0
    $10,000+
    250 - 999 employees
    Winnersh, England
    Cloud consulting & SI company Transparity is located in Winnersh, England. The midsize firm was founded in 2015. Their services include cloud consulting & SI, IT managed services, Custom Software Development, Artificial Intelligence, and more.
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    Clients

    Apex NSPCC NHS Lush

    Industries

  • 15
    (13 Reviews) 5.0

    Timeliness

    5.0

    Service Excellence

    5.0

    Value

    5.0

    Would Recommend

    5.0
    $1,000+
    10 - 49 employees
    London, England

    Quema OÜ is a small IT strategy consulting and cloud consulting & SI company. The Tallinn, Estonia-based company was founded in 2022. Their team offers IT strategy consulting and cloud consulting & SI.

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    Clients

    Blyp

    Industries

  • 16
    (5 Reviews) 4.8

    Timeliness

    4.8

    Service Excellence

    4.9

    Value

    4.7

    Would Recommend

    4.8
    $5,000+
    50 - 249 employees
    London, England
    MagicFuse is a CRM consulting and SI company founded in 2019. Based in London, England and L'viv, Ukraine, their midsize team focuses on CRM consulting and SI and Custom Software Development.
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    Industries

  • 17
    (4 Reviews) 4.8

    Timeliness

    4.8

    Service Excellence

    4.8

    Value

    4.4

    Would Recommend

    4.6
    $25,000+
    10 - 49 employees
    London, England

    Silicon Reef are a SharePoint development & Microsoft 365 solutions agency. Founded in 2016, they are located in the United Kingdom with offices in London, Chester, and Bournemouth. They offer a range of services from consultancy, campaign-based web or app development, and front-end creative. They also offer full-blown migration, strategic road-mapping, and full-service development partnerships and partner with medium-sized to enterprise clients. 

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    Clients

    Unilever
  • 18
    (5 Reviews) 5.0

    Timeliness

    5.0

    Service Excellence

    5.0

    Value

    4.9

    Would Recommend

    5.0
    $1,000+
    10 - 49 employees
    Hildenborough, England

    RSK Cyber Security is a cybersecurity company. They are headquartered in Hildenborough, United Kingdom and Dubai, United Arab Emirates and have a small team. Their services include cybersecurity, cloud consulting & SI, web development, mobile app development, and more. The company was established in 2021.

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    Industries

  • 19
    (8 Reviews) 5.0

    Timeliness

    4.7

    Service Excellence

    4.9

    Value

    4.7

    Would Recommend

    5.0
    $5,000+
    10 - 49 employees
    London, England

    Digital Litmus is a marketing and digital agency based in London. Founded in 2015, their team of around 10 employees specializes in content marketing, digital strategy, and PPC.

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    Clients

    YuLife

    Industries

  • 20
    (56 Reviews) 4.9

    Timeliness

    4.9

    Service Excellence

    4.9

    Value

    4.9

    Would Recommend

    4.9
    $50,000+
    250 - 999 employees
    London, England
    Custom software development company Computools is based in New York, New York; London, England; Oslo, Norway and Linz, Austria. The midsize team focuses on Custom Software Development, IT managed services, Mobile App Development, IT strategy consulting, and more and was founded in 2013.
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    Clients

    Visa Epson IBM Dior

    Industries

  • 21
    (5 Reviews) 4.9

    Timeliness

    4.9

    Service Excellence

    4.8

    Value

    4.4

    Would Recommend

    4.7
    $5,000+
    1,000 - 9,999 employees
    St Albans, England

    E-commerce development company FCamara was launched in 2006. The large São Paulo, Brazil-based team offers e-commerce development, IT staff augmentation, custom software development, mobile app development, and more.

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    Clients

    Farfetch IPSOS Elfa Group BTG Pactual

    Industries

  • 22
    (19 Reviews) 4.8

    Timeliness

    4.8

    Service Excellence

    4.8

    Value

    4.4

    Would Recommend

    4.9
    $25,000+
    1,000 - 9,999 employees
    London, England

    Keyrus is a digital consulting agency that has been offering BI and Big Data consulting, IT strategy consulting, Cloud consulting, and SI services to their clients in the retail, business services, and financial services industries since 1996. Their 10,000 employees are based out of their offices in London, NYC, LA, D.C., France, and Toronto. 

     

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    Clients

    Dannon

    Industries

  • 23
    (7 Reviews) 4.7

    Timeliness

    4.3

    Service Excellence

    4.6

    Value

    4.3

    Would Recommend

    5.0
    $100,000+
    1,000 - 9,999 employees
    London, England

    CI&T (formerly CINQ Technologies) is software development company based in Curitiba, Brazil with additional offices in Brazil and Miami. Founded in 1992, the team of 271 specializes in custom software development, IT staff augmentation, and UX/UI design. They work primarily with enterprise clients in the transportation and financial services industries.

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    Clients

    SITA

    Industries

  • 24
    (10 Reviews) 4.8

    Timeliness

    4.8

    Service Excellence

    4.8

    Value

    3.9

    Would Recommend

    4.5
    $5,000+
    250 - 999 employees
    London, England

    A Salesforce Partner Innovation Award winner 2020. A full-service Salesforce Platinum consulting, development & outsourcing partner delivering across the entire Salesforce platform. 500+ people, 16 offices in 12 countries, we think globally and delivery locally.

     

    We have been 100% focused on helping transform businesses within the Salesforce ecosystem over the last 10 years. Clients love our flexible, nimble, and cost-effective approach. It's why we receive an average customer satisfaction rating of 4.8 out of 5.

     

    As PDO Experts, Salesforce.org Impact Partners, and Tableau Partners, we are one of a few Salesforce partners to have the technical scale, expertise, and experience to design & deliver core Salesforce implementations & AppExchange apps.

     

    You benefit from our industry knowledge and experience by implementing a best practice solution within your business. Quickly & efficiently. Our specialist certified consultants & developers have delivered over 1000 projects to more than 350 clients.

     

    We work hand-in-hand with stakeholders to create achievable roadmaps, deliver benefits quickly & maximize Salesforce investments. We have the technical expertise & experience to deliver solutions across all Salesforce clouds, for all sizes of companies, in many industries.

     

    With 500+ Salesforce professionals located in our regional offices and central delivery hubs, we utilize best practice Salesforce technology and dev ops, enabling our customers to realize the benefits quickly.

     

    We have the scale to provide dedicated teams of developers and consultants to our GSI and ISV partners. Since 2013, Salesforce Services has used VRP’s development expertise on over 20 of their most strategic, enterprise accounts. As one of the few PDO experts, we have helped ISVs with ideation, design, development, and support with AppExchange apps.

     

    Our dedicated Managed Service team provides support, admin & small enhancements to clients via flexible, responsive & cost-effective monthly packages of hours.

     

    Key clients:  Rolls Royce, Welk Resorts, BVT Sweden, Felm, Beyond Better Foods, Digital Genius

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    Clients

    Rolls Royce

    Industries

  • 25
    (26 Reviews) 4.9

    Timeliness

    4.9

    Service Excellence

    4.9

    Value

    4.5

    Would Recommend

    4.9
    $100,000+
    1,000 - 9,999 employees
    London , England

    DataArt is a software engineering firm in München, Germany; Zug, Switzerland; London, England; and New York. Founded in 1997, they have about 3,000 employees that serve mainly midmarket and small-business clients in the financial, healthcare, and IT sectors. Services include custom software development, enterprise app modernization, and UI/UX design.

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    Clients

    Ocado Technology Metro Markets Nasdaq Invesco

    Industries

  • 26
    (4 Reviews) 5.0

    Timeliness

    5.0

    Service Excellence

    5.0

    Value

    5.0

    Would Recommend

    5.0
    $1,000+
    10 - 49 employees
    Bradford on Avon, England

    Established in 1999, Systemagic Ltd is an IT managed services company. The firm offers IT managed services, cloud consulting & SI, cybersecurity, and IT strategy consulting and has a small team. The firm is located in Bradford on Avon, United Kingdom and London, United Kingdom.

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    Industries

  • 27
    (4 Reviews) 4.9

    Timeliness

    4.9

    Service Excellence

    4.6

    Value

    4.4

    Would Recommend

    5.0
    Undisclosed
    50 - 249 employees
    London, England
    Abacus Cambridge Partners, an ERP consulting and SI company, is based in London, England; Dubai, United Arab Emirates; Riyadh, Saudi Arabia and New York, New York. They focus on ERP consulting and SI, BI & big data consulting & SI, Custom Software Development, Call Center Services, and more and were founded in 2017.
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    Clients

    Hafilat Industry LLC

    Industries

  • 28
    (3 Reviews) 4.8

    Timeliness

    4.2

    Service Excellence

    5.0

    Value

    4.5

    Would Recommend

    4.7
    $25,000+
    50 - 249 employees
    London, England

    Esynergy is a big data analytics company. They are headquartered in London, United Kingdom and have a midsize team. Their services include BI & big data consulting & SI, cloud consulting & SI, custom software development, mobile app development, and more.

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    Industries

  • 29
    (11 Reviews) 5.0

    Timeliness

    4.9

    Service Excellence

    4.9

    Value

    4.9

    Would Recommend

    5.0
    $5,000+
    250 - 999 employees
    London, England

    Coders Dev is a web design and mobile app development company based in London with offices in Singapore and Abu Dhabi, U.A.E. The company, founded in 2010, has more than 500 employees and provides web development and AI services. Coders Dev serves small and larger-sized companies in the health care & medical, hospitality & leisure, consumer products & services, financial services, gaming, telecommunications, automotive, manufacturing, and e-commerce industries. 

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    Clients

    British Telecom

    Industries

  • 30
    (3 Reviews) 5.0

    Timeliness

    5.0

    Service Excellence

    5.0

    Value

    5.0

    Would Recommend

    5.0
    $5,000+
    50 - 249 employees
    Marlow, England

    Atech Support Ltd is a cloud-services company based in High Wycombe, United Kingdom. Founded in 2006, their team of around 35 employees provides cloud and IT strategy consulting and IT managed services.

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    Clients

    Octopus Investments

    Industries

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Most Reviewed IT Services Company in United Kingdom

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