Top 100 IT Services Companies in the United Kingdom
The Best of September 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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391$10,000+2 - 9 employeesChester, EnglandBailey & Associates is an IT strategy consulting company. Their team is headquartered in Chester, England. The agency focuses on IT strategy consulting and ERP consulting and SI.Read More
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392$5,000+10 - 49 employeesBristol, EnglandIllumo digital is an IT strategy consulting company. Established in 2004, the agency is located in Bristol, England. Their team offers IT strategy consulting and Digital Strategy.Read More
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393$10,000+10 - 49 employeesNewcastle upon Tyne, EnglandLeaf is a business intelligence company located in Newcastle upon Tyne, England. The small team offers BI & big data consulting & SI, E-Commerce Development, Ecommerce Marketing, Performance Marketing, and more and was launched in 2014.Read More
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394$1,000+10 - 49 employeesLondon, EnglandMacnitech is a cloud consulting & SI company. The company is located in London, England. Their services include cloud consulting & SI and Cybersecurity.Read More
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395$1,000+10 - 49 employeesLondon, EnglandWebtech is a custom software development firm. They specialize in Custom Software Development, Web Development, UX/UI Design, ERP consulting and SI, and more and were founded in 2021. Their small team is in London, England.Read More
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396$5,000+10 - 49 employeesLondon, EnglandLaunched in 2002, zsah Limited is a cloud consulting & SI company. The team offers cloud consulting & SI and BI & big data consulting & SI.Read More
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397$5,000+10 - 49 employeesLondon, EnglandUnified communications consulting & SI company Content Formula was launched in 2005. The company offers unified communications consulting & SI and Custom Software Development, and is small.Read More
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398$10,000+50 - 249 employeesStanmore, EnglandMicromindercs is a Cybersecurity company. Launched in 2018, the team focuses on Cybersecurity and IT managed services.Read More
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399Undisclosed10 - 49 employeesLeeds, EnglandPerform Partners is a small Leeds, England-based IT strategy consulting company. The team focuses on IT strategy consulting and cloud consulting & SI.Read More
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400UndisclosedFreelancer employeesLondon, EnglandRead More
Saines Business Consulting is the solo enterprise of David Saines, an independent consultant based in London. Saines provides business consulting and productivity, collaboration & UC consulting and SI services to enterprise and smaller-sized companies in the financial services, transportation, utilities, and other industries.
Clients
Virgin Atlantic AirwaysIndustries
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401Undisclosed50 - 249 employeesLondon, EnglandCyberOne, a Cybersecurity company, was founded in 2005. The company specializes in Cybersecurity and IT managed services, and is midsize.Read More
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402$25,000+10 - 49 employeesRichmond, EnglandUser experience agency Unified is located in Richmond, England. The company offers UX/UI Design, Conversion Optimization, Digital Strategy, E-Commerce Development, and more and is small.The company was launched in 1993.Read More
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403$10,000+10 - 49 employeesLondon , EnglandRead More
Danger Farms is a London-based digital agency founded in 2012. With their team of over 10 people, they provide custom software development, digital strategy, and UX/UI design solutions primarily to enterprise-level clients. They have experience in business and financial services, as well as retail.
Clients
Lloyd's RegisterIndustries
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404$10,000+50 - 249 employeesLondon, EnglandPlexteq, a custom software development company, was established in 2014. Headquartered in Vinnytsia, Ukraine; Tallinn, Estonia and London, England, their midsize team provides Custom Software Development, Enterprise App Modernization, DevOps Managed Services, BI & big data consulting & SI, and more.Read More
Clients
AVI-SPLIndustries
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405Undisclosed10 - 49 employeesLondon, EnglandWeb Design Agency UK is a SEO services firm. They provide Search Engine Optimization, IT managed services, Web Development, and E-Commerce Development and were launched in 2016. Their small team is in London, England.Read More
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406$1,000+10 - 49 employeesStourbridge, EnglandSuperfast IT is a Cybersecurity company. In Stourbridge, England, the agency specializes in Cybersecurity and IT managed services.Read More
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407$10,000+10 - 49 employeesLondon, EnglandT3 is an AI Consulting company founded in 2023. The small London, England-based team specializes in AI Consulting, Artificial Intelligence, Generative AI, AI Agents, and more.Read More
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408$1,000+2 - 9 employeesHigh Wycombe, EnglandLaunched in 2018, Leadhook Media is an Email Marketing company. They are in High Wycombe, England and have a small team. The firm provides Email Marketing, Advertising, Direct Marketing, Conversion Optimization, and more.Read More
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409$1,000+1,000 - 9,999 employeesLondon, EnglandSify Digital Services Ltd is a large IT staff augmentation company founded in 1995. Their team provides IT staff augmentation and IT managed services.Read More
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410Undisclosed10 - 49 employeesManchester, EnglandNetMonkeys Ltd is a small IT managed services company. Launched in 2003, the agency is based in Manchester, England; Nottingham, England and London, England. Their services include IT managed services, Custom Software Development, Cybersecurity, IT strategy consulting, and more.Read More
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411$1,000+10 - 49 employeesLytchett Matravers, EnglandAptagon Technologies is a small Clearwater, Florida-based software development company. Their services include Custom Software Development and Content Writing Services.Read More
Clients
TestGorillaIndustries
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412$250,000+2 - 9 employeesLondon, EnglandSanRa is a Cybersecurity company established in 2022. The small team specializes in Cybersecurity.Read More
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413$5,000+10 - 49 employeesLondon, EnglandCosonas Ltd, an IT strategy consulting company, is based in London, England. They offer IT strategy consulting, IT staff augmentation, Custom Software Development, Web Development, and more and were founded in 2020.Read More
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414$1,000+10 - 49 employeesGreenford, EnglandIT managed services company Toshost Ltd was launched in 2012. The agency specializes in IT managed services.Read More
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415$1,000+10 - 49 employeesSheffield, EnglandLaunched in 2007, One2Call Ltd is a small IT managed services company. Their services include IT managed services and unified communications consulting & SI.Read More
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416$10,000+50 - 249 employeesHastings, EnglandA-listware, an IT staff augmentation company, is based in Hastings, England. The midsize company was established in 2017. Their services include IT staff augmentation, IT managed services, Custom Software Development, Web Development, and more.Read More
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417$100,000+250 - 999 employeesLondon, EnglandCRM consulting and SI company Exalogic Consulting is based in Dubai, United Arab Emirates and Bengaluru, India. The team provides CRM consulting and SI and Business Consulting.Read More
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418$5,000+2 - 9 employeesStaines-upon-Thames, EnglandCompliance Consulting company KEW DATA was launched in 2023. They are headquartered in Staines-upon-Thames, England and have a small team. Their services include Compliance Consulting, Internet & Technology Law, and Cybersecurity.Read More
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419$10,000+10 - 49 employeesNewbury, EnglandSiaNTech is a small website development firm. Based in Newbury, United Kingdom, the agency was launched in 2021. Their services include web development, mobile app development, web design, IT strategy consulting, and more.Read More
Industries
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420$50,000+2 - 9 employeesLondon, EnglandMVR IT Limited, a data analytics company, was launched in 2014. The firm specializes in BI & big data consulting & SI and cloud consulting & SI, and is small.Read More
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