Top 100 IT Services Companies in the United Kingdom
The Best of July 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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901Undisclosed2 - 9 employeesColchester, EnglandPcRefix, an IT managed services company, was established in 2010. The firm offers IT managed services and other IT consulting and SI, and is small.Read More
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902$1,000+10 - 49 employeesCity of London, EnglandFounded in 2015, Magnetar IT is an IT managed services company. The team offers IT managed services and cloud consulting & SI and is in City of London, England and Royal Leamington Spa, England.Read More
Industries
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903Undisclosed10 - 49 employeesTyne and Wear , EnglandZenos Technology is a web design agency. The Tyne and Wear , England-based firm was established in 2012. Their team offers Web Design and IT strategy consulting.Read More
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904Undisclosed2 - 9 employeesLeigh, EnglandExpress IT is a small IT strategy consulting company. Founded in 2011, the team provides IT strategy consulting and cloud consulting & SI.Read More
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905$5,000+10 - 49 employeesLondon, EnglandEstablished in 2020, Securityium is a Cybersecurity company. The team offers Cybersecurity and IT strategy consulting.Read More
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906$10,000+50 - 249 employeesNewcastle upon Tyne, EnglandEstablished in 2013, Malleum is a midsize Ottawa, Canada-based cloud consulting & SI company. Their services include cloud consulting & SI and Cybersecurity.Read More
Industries
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907$1,000+50 - 249 employeesWembley, EnglandIT managed services company Affinity Smart is located in Wembley, England. They provide IT managed services and other IT consulting and SI.Read More
Industries
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908$1,000+2 - 9 employeesGreenfield, EnglandBased in Greenfield, England, KEEP Information Security Services is a Cybersecurity company. They provide Cybersecurity and IT strategy consulting and were launched in 2014.Read More
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909$5,000+10 - 49 employeesRotherham, EnglandBalliante is an IT strategy consulting company founded in 2019. In Rotherham, England and Middlesbrough, England, the team specializes in IT strategy consulting and BI & big data consulting & SI.Read More
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910$10,000+10 - 49 employeesEdinburgh, ScotlandOptima Connect is a CRM consulting and SI company. The Edinburgh, Scotland-based team offers CRM consulting and SI and BI & big data consulting & SI.Read More
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911$5,000+50 - 249 employeesHigh Wycombe, EnglandLaunched in 2010, Anya Consultancy Services is an IT strategy consulting company. The midsize team offers IT strategy consulting and BI & big data consulting & SI.Read More
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912$10,000+2 - 9 employeesLiverpool, EnglandHalcyon IT Services ltd is a Cybersecurity company founded in 2023. In Liverpool, England, the team provides Cybersecurity and IT managed services.Read More
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913Undisclosed2 - 9 employeesChesterfield, EnglandBlack Swan Cyber Security Solutions, a Cybersecurity company, was established in 2006. They provides Cybersecurity.Read More
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914$1,000+2 - 9 employeesReading, EnglandIn Reading, England and Reading, England, Dead Simple Computing is an IT strategy consulting company. They offer IT strategy consulting and cloud consulting & SI.Read More
Industries
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915$10,000+10 - 49 employeesLondon, EnglandEstablished in 2019, Technology Transformation Group is a web design company. Headquartered in London, England, the team specializes in Web Design and cloud consulting & SI.Read More
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916$1,000+250 - 999 employeesLondon, EnglandIn London, England, ServiceJi is an IT strategy consulting company. The team provides IT strategy consulting and cloud consulting & SI.Read More
Industries
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917$1,000+10 - 49 employeesNorthampton, EnglandHeadquartered in Northampton, England, Thoughtlogik is a CRM consulting and SI company. Their services include CRM consulting and SI and ERP consulting and SI.Read More
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918$5,000+10 - 49 employeesCarshalton, EnglandGoodChoice IT Ltd is a small IT managed services company headquartered in Carshalton, England. The team focuses on IT managed services and Cybersecurity.Read More
Industries
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919$5,000+10 - 49 employeesOxford, EnglandIn Oxford, England, Cantata Limited is a small CRM consulting and SI company. Their services include CRM consulting and SI and other IT consulting and SI.Read More
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920UndisclosedFreelancer employeesLondon, EnglandPhenomlab Ltd is a Cybersecurity company. Based in London, England, the team provides Cybersecurity.Read More
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921Undisclosed50 - 249 employeesLondon, EnglandLabdex equipment Ltd is an unified communications consulting & SI company. Their team is in London, England. The agency provides unified communications consulting & SI and CRM consulting and SI.Read More
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922Undisclosed10 - 49 employeesManchester, EnglandAxiom 360, a small IT managed services and Cybersecurity company, is in Whitby, Canada and Manchester, England. Their services include IT managed services and Cybersecurity.Read More
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923$1,000+2 - 9 employeesLondon, EnglandFounded in 2023, WhizzIT is a small IT managed services company in London, England and Stevenage, England. Their team offers IT managed services and Cybersecurity.Read More
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924Undisclosed50 - 249 employeesFleet, EnglandIntouch Tech - Telecoms, IT & Cyber Solutions is an IT strategy consulting company established in 2012. Their team offers IT strategy consulting and Cybersecurity.Read More
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925Undisclosed2 - 9 employeesNewmarket, EnglandBackup Data Ltd TA GSDIT is an other IT consulting and SI company. Launched in 2011, their team specializes in other IT consulting and SI and IT managed services.Read More
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926$25,000+10 - 49 employeesLondon, EnglandBusiness intelligence company 173tech is based in London, England. Established in 2019, the team specializes in BI & big data consulting & SI and AI Consulting.Read More
Industries
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927Undisclosed10 - 49 employeesLondon, EnglandHeadquartered in London, England, Zero Trust Solutions is a Cybersecurity company. Their services include Cybersecurity and Microservices Architecture Services.Read More
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928$1,000+2 - 9 employeesLondon, EnglandLaunched in 2024, Coreitech is an IT managed services company. The team offers IT managed services and Cybersecurity.Read More
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929Undisclosed2 - 9 employeesNewark-on-Trent, EnglandOtter IT. Is a small Newark-on-Trent, England-based IT managed services company. The team focuses on IT managed services and Cybersecurity.Read More
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930Undisclosed50 - 249 employeesLeatherhead, EnglandWD Assist is an ERP consulting and SI company based in Leatherhead, England. Established in 2018, the team focuses on ERP consulting and SI and Business Consulting.Read More
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