Top 100 IT Services Companies in the United Kingdom
The Best of October 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. Having a partner that guarantees the seamless operation of these vital systems is crucial, as it directly impacts a brand's success—a robust and dependable backend results in a user-friendly frontend, enhancing traffic, engagement, and conversions.
The only problem modern companies face is finding such a partner. One with technical expertise and a deep understanding and insight into the company’s industry. This is why The Manifest created and curated a list of the top performers in the IT services development industry in the United Kingdom. Make sure to go through each option and read the user-contributed reviews about them. Choose the agency that best suits your company’s needs and requirements.
Jump to Most Reviewed Companies
List of the Best United Kingdom IT Companies
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1501$25,000+10 - 49 employeesLancashire, EnglandNublue is a cloud consulting & SI company founded in 2005. The team provides cloud consulting & SI and E-Commerce Development.Read More
Industries
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1502Undisclosed10 - 49 employeesLondon, EnglandLocated in London, England and Mumbai, India, Network Science is an AR/VR development company. They specialize in AR/VR development and IoT development.Read More
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1503Undisclosed50 - 249 employeesEdinburgh , ScotlandSoftware development firm Mudano is headquartered in Edinburgh , Scotland. Founded in 2014, the team specializes in Custom Software Development and Artificial Intelligence.Read More
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1504$1,000+Freelancer employeesEast Kilbride, ScotlandHammur IT Services, a web design company, offers Web Design and IT strategy consulting. The firm is in East Kilbride, Scotland.Read More
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1505$10,000+Freelancer employeesEast Ardsley, EnglandNorthern Contrast, an IT strategy consulting company, was established in 2011. The small East Ardsley, United Kingdom-based team provides IT strategy consulting, web design, web development, product design, and more.Read More
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1506$1,000+Freelancer employeesHarrogate, EnglandAndrew Backhouse - Freelance Web Designer Harrogate, an user experience agency, was established in 2015. The small team specializes in UX/UI Design and IT managed services.Read More
Industries
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1507$100,000+50 - 249 employeesSlough, EnglandIntagleo Systems is a midsize Slough, United Kingdom-based custom software development firm. Founded in 2004, the team focuses on custom software development, IT staff augmentation, mobile app development, web development, and more.Read More
Industries
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1508$25,000+50 - 249 employeesLondon, EnglandRead More
300Brains is a web development company. Their midsize team is in Warszawa, Poland; San Francisco, California and Kópavogur, Iceland. Their services include web development, custom software development, mobile app development, IT staff augmentation, and more.
Clients
Deutsche BörseIndustries
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1509Undisclosed10 - 49 employeesBristol, EnglandLocated in Bristol, England, Wattle is a web design agency. The team specializes in Web Design and CRM consulting and SI.Read More
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1510$10,000+250 - 999 employeesLondon, EnglandCodertal is a midsize mobile application development company. They focus on Mobile App Development and Web Development and were launched in 2021.Read More
Industries
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1511$10,000+250 - 999 employeesLondon, EnglandAgencyX is an IT strategy consulting company launched in 2019. The team provides IT strategy consulting and IT staff augmentation and is in London, England.Read More
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1512$1,000+250 - 999 employeesLondon, EnglandBrightBench, a midsize cloud consulting & SI company, is located in London, England and Lahore, Pakistan. The team offers cloud consulting & SI and Custom Software Development.Read More
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1513$25,000+250 - 999 employeesGreater London, EnglandIBU Group is an IT staff augmentation company. Launched in 2012, the team offers IT staff augmentation and IT strategy consulting.Read More
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1514$10,000+10 - 49 employeesLondon, EnglandLaunched in 2022, InnotatzIT Solutions Private Limited is a IT staff augmentation company. Headquartered in Saligao, India; London W2 London W2 6BD, United Kingdom; Kuala Lumpur, Malaysia and Westchester, Illinois, their small team specializes in IT staff augmentation, IT strategy consulting, corporate training, business consulting, and more.Read More
Industries
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1515$1,000+2 - 9 employeesLondon, EnglandIn London, England and Ho Chi Minh, Vietnam, RISESI Limited - Oracle Services & Personnel is a small IT managed services company. The team focuses on IT managed services and cloud consulting & SI.Read More
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1516$5,000+50 - 249 employeesCams Hall Estate, EnglandCobweb Solutions Ltd is an IT managed services company founded in 1996. Headquartered in Cams Hall Estate, United Kingdom, their midsize team specializes in IT managed services, IT strategy consulting, and cloud consulting & SI.Read More
Industries
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1517$1,000+50 - 249 employeesCastleford, EnglandRF-SMART is an ERP consulting and SI company established in 1982. Their services include ERP consulting and SI and Mobile App Development.Read More
Clients
Alamo Group -
1518$5,000+50 - 249 employeesLondon, EnglandRead More
RiskIQ is a cybersecurity company based in San Francisco with a team of just over 150 employees. Established in 2009, they provide cybersecurity, business intelligence, big data consulting, and software integration services to clients in a variety of industries.
Clients
AmazonIndustries
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1519$5,000+250 - 999 employeesLondon, EnglandBased in San Francisco, California and Reston, Virginia, Lookout is a Cybersecurity company. They specialize in Cybersecurity.Read More
Industries
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1520$5,000+50 - 249 employeesLondon, EnglandIOActive is a Cybersecurity company. Located in Seattle, Washington and London, England, the agency was launched in 1998. Their team focuses on Cybersecurity.Read More
Industries
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1521$10,000+250 - 999 employeesLondon , EnglandECommera is an e-commerce development firm. Launched in 2007, the company is located in Sofia, Bulgaria and London , England. Their team focuses on E-Commerce Development and cloud consulting & SI.Read More
Industries
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1522$10,000+250 - 999 employeesSlough, EnglandGuidance Software is a Cybersecurity company. Their midsize team is based in Pasadena, California and New York, New York. Their services include Cybersecurity and IT strategy consulting.Read More
Clients
BoxIndustries
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1523$10,000+1,000 - 9,999 employeesTheale, EnglandRapid7 is a Cybersecurity company. Their large team is in Boston, Massachusetts and Manhattan Beach, California. Their services include Cybersecurity and IT managed services.Read More
Industries
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1524$10,000+250 - 999 employeesLondon, EnglandCybereason is a Cybersecurity company. They are in Boston, Massachusetts and London, England, and their services include Cybersecurity and BI & big data consulting & SI.Read More
Industries
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1525$10,000+250 - 999 employeesLondon, EnglandDigital Guardian, a midsize IT managed services company, is in Waltham, Massachusetts and Reston, Virginia. The team specializes in IT managed services and Cybersecurity.Read More
Industries
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1526$10,000+250 - 999 employeesLondon, EnglandVeracode is a Cybersecurity company located in Burlington, Massachusetts and London, England. They focus on Cybersecurity and Application Testing and were established in 2006.Read More
Industries
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1527$5,000+1,000 - 9,999 employeesBristol, EnglandFounded in 1971, Merkle is a large CRM consulting and SI company. Their team focuses on CRM consulting and SI and Digital Strategy.Read More
Clients
DellIndustries
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1528$5,000+10 - 49 employeesHamilton, ScotlandSmall IT managed services and other IT consulting and SI company Provista UK, is in Hamilton, Scotland and Aberdeen City, Scotland. The team offers IT managed services and other IT consulting and SI.Read More
Industries
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1529$5,000+10 - 49 employeesAldermaston, EnglandIn Aldermaston, England, Voyager Networks is an IT managed services company. Their services include IT managed services and Enterprise App Modernization.Read More
Industries
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1530$5,000+10 - 49 employeesBletchley, EnglandFounded in 1988, Lynx Networks is a small IT managed services company. Their team focuses on IT managed services.Read More
Industries
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