Top 100 IT Services Companies in the United Kingdom
The Best of December 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. 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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$1,000+50 - 249 employeesNaperville, ILRead More
BetterWorld Technology is a midsize IT managed services company launched in 2003. Their services include IT managed services, Cybersecurity, IT strategy consulting, and Compliance Consulting. The company is headquartered in Naperville, Illinois; Naperville, Illinois; Winter Park, Florida and Denver, Colorado.
Industries
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1771Undisclosed10 - 49 employeesBelfast, Northern IrelandAllsop Intelligent Software is a small data analytics company. Founded in 1996, the team offers BI & big data consulting & SI and cloud consulting & SI.Read More
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1772Undisclosed250 - 999 employeesBelfast, Northern IrelandSilverSky is a Cybersecurity company. They are headquartered in Morrisville, North Carolina and Milford, Connecticut. Their team offers Cybersecurity.Read More
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1773Undisclosed1,000 - 9,999 employeesLondon, EnglandEstablished in 1999, Secureworks is a large Atlanta, Georgia-based Cybersecurity company. Their services include Cybersecurity.Read More
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1774Undisclosed50 - 249 employeesBelfast, Northern IrelandLaunched in 2002, Blue Zinc IT Ltd is a midsize Belfast, Northern Ireland-based data analytics company. Their services include BI & big data consulting & SI.Read More
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1775Undisclosed50 - 249 employeesLondon, EnglandLaunched in 2011, ThreatSpike Labs is a midsize Cybersecurity company based in London, England. Their team specializes in Cybersecurity.Read More
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1776Undisclosed250 - 999 employeesLondon, EnglandUX design company Avensia, Inc. Was launched in 1998. The team focuses on UX/UI Design and IT strategy consulting.Read More
Industries
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1777Undisclosed50 - 249 employeesLondon, EnglandWestbrook International Ltd is a cloud consulting & SI and CRM consulting and SI company. The company is in London, England. Their services include cloud consulting & SI and CRM consulting and SI.Read More
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1778Undisclosed2 - 9 employeesLondon, EnglandCloud consulting & SI and CRM consulting and SI company CloudAnalysts is headquartered in London, England. The team offers cloud consulting & SI and CRM consulting and SI.Read More
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1779Undisclosed50 - 249 employeesBletchley, EnglandAculab, a cloud consulting & SI company, was launched in 1978. The team specializes in cloud consulting & SI and unified communications consulting & SI.Read More
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1780Undisclosed250 - 999 employeesOxford, EnglandNominet is an Oxford, England-based Cybersecurity company. Launched in 1996, the team specializes in Cybersecurity.Read More
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1781Undisclosed2 - 9 employeesPier Head, EnglandCloudJungle is a CRM consulting and SI company. Their small team is in Pier Head, England. Their services include CRM consulting and SI.Read More
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1782Undisclosed10 - 49 employeesLondon, EnglandFounded in 2015, Silver Softworks is a small CRM consulting and SI company based in London, England. Their team provides CRM consulting and SI.Read More
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1783Undisclosed10 - 49 employeesLondon, EnglandHeadquartered in London, England, Darklabs is a small Cybersecurity company. Their services include Cybersecurity.Read More
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1784Undisclosed250 - 999 employeesOldbury, EnglandA&O IT Group is a Cybersecurity company headquartered in Oldbury, England. They focus on Cybersecurity and were founded in 1963.Read More
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1785$1,000+Freelancer employeesLondon, EnglandBased in London, England, ALPN Digital is a CRM consulting and SI company. Established in 2023, the team provides CRM consulting and SI and Marketing Strategy.Read More
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1786Undisclosed2 - 9 employeesThorpe-le-Soken, EnglandAuxilium Curo Ltd is an IT managed services company. They specialize in IT managed services and Cybersecurity and were established in 2020.Read More
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1787Undisclosed50 - 249 employeesChorleywood, EnglandEXTENDED SOFTWARE TECHNOLOGIES LTD is a Direct Marketing company launched in 2010. Their team focuses on Direct Marketing and other IT consulting and SI.Read More
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1788Undisclosed2 - 9 employeesCity of London, EnglandMagnetar IT is an IT strategy consulting company headquartered in City of London, England and Royal Leamington Spa, England. The team focuses on IT strategy consulting and cloud consulting & SI.Read More
Industries
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1789Undisclosed50 - 249 employeesLondon , EnglandE-commerce development firm Pierce Washington was established in 2005. The team specializes in E-Commerce Development and IT strategy consulting.Read More
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1790Undisclosed10 - 49 employeesLondon, EnglandShiftlogic.io is a cloud consulting & SI company. Based in London, England, their small team offers cloud consulting & SI and CRM consulting and SI. The agency was launched in 2022.Read More
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1791Undisclosed250 - 999 employeesCity of London, EnglandLaunched in 2014, Contino is a cloud consulting & SI and Cybersecurity company. The company focuses on cloud consulting & SI and Cybersecurity, and is midsize.Read More
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1792Undisclosed250 - 999 employeesLondon, EnglandKocho is a Cybersecurity and IT managed services company founded in 2001. The midsize team offers Cybersecurity and IT managed services.Read More
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1793Undisclosed10 - 49 employeesCity of London, EnglandAppsecco is a Cybersecurity company launched in 2015. The company provides Cybersecurity.Read More
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1794Undisclosed50 - 249 employeesLondon, EnglandBilligence is a Chatswood, Australia-based business intelligence company. Their services include BI & big data consulting & SI and cloud consulting & SI.Read More
Industries
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1795Undisclosed50 - 249 employeesLondon , EnglandDarkbeam is a midsize Cybersecurity company launched in 2017. Their team specializes in Cybersecurity.Read More
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1796Undisclosed10 - 49 employeesLondon, EnglandC2 Risk is a London, England-based big data company and Cybersecurity company. They focus on BI & big data consulting & SI and Cybersecurity.Read More
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1797Undisclosed50 - 249 employeesStokenchurch, EnglandDifferentia Consulting is an ERP consulting and SI company. They are headquartered in Stokenchurch, England. Their team offers ERP consulting and SI and IT strategy consulting.Read More
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1798Undisclosed2 - 9 employeesCity of London, EnglandEstablished in 2013, Cyber Sentinel is a Cybersecurity company. The agency specializes in Cybersecurity, and is small.Read More
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1799Undisclosed2 - 9 employeesFrankfurt am Main, GermanyLaunched in 2015, Cobwebs Technologies is a small Cybersecurity company. Their services include Cybersecurity and Artificial Intelligence.Read More
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1800Undisclosed50 - 249 employeesSW1E 6AD, EnglandFounded in 2005, redk is a midsize CRM consulting and SI company in SW1E 6AD, England. Their team focuses on CRM consulting and SI.Read More
Industries
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Check out an IT Services Company in United Kingdom with the most new reviews in the past 12 months.
Most Reviewed
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