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 November 2026
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. 
Jump to Most Reviewed Companies

List of the Best United Kingdom IT Companies

  • 31
    (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 launched in 2021. The small Hildenborough, England-based team specializes in Cybersecurity, Application Testing, and cloud consulting & SI.
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    Industries

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  • 32
    (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

  • 33
    (4 Reviews) 4.9

    Timeliness

    4.8

    Service Excellence

    4.9

    Value

    4.9

    Would Recommend

    4.9
    $10,000+
    50 - 249 employees
    London, England
    AlphaBOLD, a midsize CRM consulting and SI company, is headquartered in Carlsbad, California and London, England. Founded in 2017, the team focuses on CRM consulting and SI, ERP consulting and SI, BI & big data consulting & SI, Custom Software Development, and more.
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    Clients

    MechCo Group LLC Green Project Technologies TaylorMade Golf MechCo Group LLC

    Industries

  • 34
    (17 Reviews) 4.9

    Timeliness

    5.0

    Service Excellence

    5.0

    Value

    4.9

    Would Recommend

    4.9
    $1,000+
    50 - 249 employees
    London, England
    CloudTech24 is an IT managed services company based in London, England; Send, England and Dubai, United Arab Emirates. The midsize team provides IT managed services, Cybersecurity, IT strategy consulting, and other IT consulting and SI. The firm was established in 2016.
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    Industries

  • 35
    (5 Reviews) 4.5

    Timeliness

    4.5

    Service Excellence

    4.4

    Value

    3.3

    Would Recommend

    4.7
    $50,000+
    1,000 - 9,999 employees
    Leeds, England

    Headquartered in Leeds, United Kingdom, BJSS is an IT consultancy with offices in London, New York, and Bristol and Manchester, U.K. Since 1993, their team of 750+ has specialized in custom software development, application testing, IT strategy consulting, and more for enterprise-level and midmarket clients. 

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    Clients

    Euroclear

    Industries

  • 36
    (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 is a small ECM consulting and SI company established in 2016. Their team focuses on ECM consulting and SI, Web Design, unified communications consulting & SI, Low/No Code Development, and more. The firm is headquartered in London, England.
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    Clients

    Warner Bros. Discovery British Red Cross University of Leeds Bauer Media Group

    Industries

  • 37
    (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

  • 38
    (4 Reviews) 5.0

    Timeliness

    4.6

    Service Excellence

    5.0

    Value

    4.5

    Would Recommend

    5.0
    $10,000+
    250 - 999 employees
    London, England

    impakt Advisors is a big data company based in New York. Founded in 2016, this company has 10 employees. Services provided by impakt Advisors include IT strategy consulting, big data consulting, and cloud consulting for businesses of all sizes.

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    Clients

    TD Ameritrade

    Industries

  • 39
    (5 Reviews) 4.9

    Timeliness

    4.8

    Service Excellence

    4.8

    Value

    5.0

    Would Recommend

    2.0
    $25,000+
    250 - 999 employees
    Lytchett Matravers, England
    Insight is a midsize cloud consulting & SI company. Founded in 2000, the company is based in Los Angeles, California; Kerala, India; Yerevan, Armenia and Lytchett Matravers, England. Their team focuses on cloud consulting & SI, unified communications consulting & SI, IT strategy consulting, Custom Software Development, and more.
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    Clients

    Colgate-Palmolive

    Industries

  • 40
    (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

  • 41
    (38 Reviews) 5.0

    Timeliness

    4.9

    Service Excellence

    4.9

    Value

    5.0

    Would Recommend

    5.0
    $25,000+
    50 - 249 employees
    London, England
    Uvik Software is a midsize IT staff augmentation company. In London, England; Kraków, Poland; Praha 8, Czech Republic and Tallinn, Estonia, the agency was established in 2015. Their team focuses on IT staff augmentation, BI & big data consulting & SI, Artificial Intelligence, and Custom Software Development.
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    Clients

    Drakontas LLC Community Connect Labs Vodafone Simple Legal (OnIt)

    Industries

  • 42
    (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

  • 43
    (9 Reviews) 4.9

    Timeliness

    4.9

    Service Excellence

    5.0

    Value

    4.8

    Would Recommend

    4.9
    $10,000+
    2 - 9 employees
    London, England

    Founded in 2017, Lambert Labs is a software development agency that specializes in Python. Their team of fewer than 10 employees is based in London. They also provide web development services and application testing. 

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    Clients

    Accenture

    Industries

  • 44
    (8 Reviews) 5.0

    Timeliness

    4.9

    Service Excellence

    5.0

    Value

    5.0

    Would Recommend

    5.0
    $5,000+
    10 - 49 employees
    Market Deeping, England
    Secret Source is a CRM consulting and SI company founded in 2015. Their small team is in Market Deeping, England and Thousand Oaks, California. Their services include CRM consulting and SI.
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    Industries

  • 45
    (6 Reviews) 5.0

    Timeliness

    4.8

    Service Excellence

    4.9

    Value

    5.0

    Would Recommend

    5.0
    $1,000+
    10 - 49 employees
    London, England
    Pixcell.io | HubSpot RevOps & AI Consultancy UK 🇬🇧 is a small CRM consulting and SI company. The London, England-based firm was established in 2022. Their services include CRM consulting and SI.
    Read More

    Clients

    Bioniq - Health - www.bioniq.com Xapien - SaaS - www.xapien.com Intruder - SaaS - www.intruder.io GrainPro - Food Production - www.grainpro.com

    Industries

  • 46
    (6 Reviews) 5.0

    Timeliness

    5.0

    Service Excellence

    5.0

    Value

    5.0

    Would Recommend

    5.0
    $10,000+
    2 - 9 employees
    Dundee, Scotland
    Data Understood is a big data analytics company. They specialize in BI & big data consulting & SI and Data Annotation Services and were launched in 2018. The company is located in Dundee, Scotland.
    Read More

    Industries

  • 47
    (1 Reviews) 5.0

    Timeliness

    5.0

    Service Excellence

    5.0

    Value

    4.5

    Would Recommend

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

    Smartdesc is a London-based IT company with a team of fewer than 50 people. Founded in 2011, they offer IT strategy consulting, cloud consulting, and cybersecurity solutions for small and mid-market businesses, primarily non-profit organizations.

    Read More

    Clients

    Mind

    Industries

  • 48
    (16 Reviews) 4.9

    Timeliness

    4.8

    Service Excellence

    4.8

    Value

    4.7

    Would Recommend

    4.7
    $50,000+
    50 - 249 employees
    London, England
    Sigli is a custom software development firm based in Antwerpen, Belgium; Vilnius, Lithuania and London, England. The midsize company was established in 2015. Their services include Custom Software Development, IT strategy consulting, Low/No Code Development, BI & big data consulting & SI, and more.
    Read More

    Clients

    Sensotec NV

    Industries

  • 49
    (55 Reviews) 4.8

    Timeliness

    4.7

    Service Excellence

    4.8

    Value

    4.7

    Would Recommend

    4.9
    $50,000+
    250 - 999 employees
    Farnborough, England
    One Beyond is an UX design company. Their midsize team is headquartered in Farnborough, England; Madrid, Spain; Budapest, Hungary and Szeged, Hungary. The firm focuses on UX/UI Design, IT strategy consulting, cloud consulting & SI, IT staff augmentation, and more.
    Read More

    Clients

    Smith & Nephew

    Industries

  • 50
    (58 Reviews) 4.8

    Timeliness

    4.6

    Service Excellence

    4.8

    Value

    4.5

    Would Recommend

    4.9
    $50,000+
    250 - 999 employees
    London, England
    Infinum, a custom software development company, was established in 2005. They are in New York, New York; San Francisco, California; Zagreb, Croatia and Ljubljana, Slovenia and have a midsize team. Their services include Custom Software Development, Web Development, Mobile App Development, UX/UI Design, and more.
    Read More

    Clients

    Philips

    Industries

  • 51
    (51 Reviews) 5.0

    Timeliness

    4.9

    Service Excellence

    5.0

    Value

    4.9

    Would Recommend

    4.9
    $1,000+
    10 - 49 employees
    Woodstock, England
    Located in Woodstock, England and London, England, Vidi Corp LTD is a small business intelligence company. Established in 2021, the team specializes in BI & big data consulting & SI, Robotics Process Automation, other IT consulting and SI, Other Application Development, and more.
    Read More

    Industries

  • 52
    (6 Reviews) 5.0

    Timeliness

    5.0

    Service Excellence

    5.0

    Value

    4.8

    Would Recommend

    4.9
    $1,000+
    10 - 49 employees
    London, England
    Digitalis.io is a cloud consulting & SI company established in 2015. They are in London, England and have a small team. Their services include cloud consulting & SI, IT managed services, DevOps Managed Services, IT staff augmentation, and more.
    Read More

    Industries

  • 53
    (4 Reviews) 4.9

    Timeliness

    4.8

    Service Excellence

    5.0

    Value

    4.8

    Would Recommend

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

    Software Solved is an Exeter, United Kingdom-based custom software development company. They specialize in custom software development, BI & big data consulting & SI, cloud consulting & SI, Artificial Intelligence, and more and were launched in 1998.

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    Industries

  • 54
    (2 Reviews) 5.0

    Timeliness

    5.0

    Service Excellence

    5.0

    Value

    5.0

    Would Recommend

    5.0
    $5,000+
    1,000 - 9,999 employees
    London, England
    Sigma Software Security is a large Cybersecurity company. Headquartered in London, England and Warszawa, Poland, the company was founded in 2002. Their services include Cybersecurity, Compliance Consulting, Application Testing, and IT managed services.
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    Industries

  • 55
    (6 Reviews) 4.6

    Timeliness

    4.5

    Service Excellence

    4.8

    Value

    4.4

    Would Recommend

    4.5
    $25,000+
    250 - 999 employees
    London, England
    Web design agency IT Labs is headquartered in Palm Beach Gardens, Florida; London, England; Noordwijk, Netherlands and Skopje, North Macedonia. The midsize team focuses on Web Design, BI & big data consulting & SI, UX/UI Design, IT strategy consulting, and more and was launched in 2005.
    Read More

    Industries

  • 56
    (22 Reviews) 4.7

    Timeliness

    4.8

    Service Excellence

    4.7

    Value

    4.5

    Would Recommend

    4.8
    $50,000+
    250 - 999 employees
    London, England
    VentureDive is a midsize software development firm. The Mountain View, California-based agency was established in 2012. Their services include Custom Software Development, Mobile App Development, CRM consulting and SI, Application Testing, and more.
    Read More

    Clients

    Careem

    Industries

  • 57
    (40 Reviews) 4.9

    Timeliness

    4.9

    Service Excellence

    4.9

    Value

    4.7

    Would Recommend

    4.9
    $250,000+
    1,000 - 9,999 employees
    Belfast, Northern Ireland
    Unosquare, LLC is a custom software development firm. They specialize in Custom Software Development, Digital Engineering, IT staff augmentation, IT managed services, and more and were launched in 2009. Their large team is Portland, Oregon-based.
    Read More

    Clients

    Axos Financial, Green Dot Bank, GTreasury, G2 Risk Solutions and Blue Owl Private Equity Stitch Fix and IDX Harvard and McGraw Hill Athena Health and Foundation Medicine

    Industries

  • 58
    (7 Reviews) 4.7

    Timeliness

    4.4

    Service Excellence

    4.5

    Value

    4.1

    Would Recommend

    5.0
    $10,000+
    1,000 - 9,999 employees
    London, England
    Xebia is a large cloud consulting & SI company launched in 2001. Their team provides cloud consulting & SI, IT strategy consulting, Custom Software Development, BI & big data consulting & SI, and more. The agency is in Wrocław, Poland; Rzeszów, Poland; Gdańsk, Poland and Atlanta, Georgia.
    Read More

    Clients

    Yell

    Industries

  • 59
    (78 Reviews) 5.0

    Timeliness

    5.0

    Service Excellence

    5.0

    Value

    5.0

    Would Recommend

    5.0
    $1,000+
    50 - 249 employees
    Rochdale, England
    PlutoSec Cybersecurity is a Cybersecurity company. They provide Cybersecurity, Application Testing, and IT managed services and were launched in 2021. The firm is in Newark, New Jersey; Toronto, Canada and Rochdale, England.
    Read More

    Industries

  • 60
    (111 Reviews) 5.0

    Timeliness

    4.9

    Service Excellence

    4.9

    Value

    5.0

    Would Recommend

    4.9
    $25,000+
    250 - 999 employees
    London, England
    Computools is a software development company. Launched in 2013, the midsize agency is in New York, New York; London, England; Flekkefjord, Norway and Linz, Austria. Their services include Custom Software Development, Artificial Intelligence, AI Agents, AI Consulting, and more.
    Read More

    Clients

    Visa Epson IBM Dior

    Industries

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