Top 100 Cybersecurity Companies in London
The Best of March 2026Looking for a top cybersecurity consultant in London?
Check out our list of the best cybersecurity consulting companies to choose a partner that can secure your company. Preventing data breaches should be the top security priority for all businesses in the digital age.
To assist you in your search for a partner, we’ve compiled this list of the top cybersecurity consulting companies in London. Browse descriptions, feedback, and awards to find which can best suit your company’s needs.
List of the Best London Cybersecurity Consultants
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151Undisclosed250 - 999 employeesLondon, EnglandIntegrity360 is a Cybersecurity company. The Dublin 18, Ireland-based firm was founded in 2005. Their team provides Cybersecurity and IT managed services.Read More
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152$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
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153$10,000+10 - 49 employeesLondon, EnglandHeadquartered in München, Germany and London, England, ACATO Europe is a Compliance Consulting company. Their services include Compliance Consulting and Business Consulting.Read More
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154$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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155$5,000+10 - 49 employeesLondon, EnglandWeSeeNow is an IT managed services company. Their team is headquartered in London, England and Leeds, England. The firm focuses on IT managed services and IT strategy consulting.Read More
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156Undisclosed50 - 249 employeesLondon, EnglandFounded in 2001, Infinity Group UK is a midsize Royal Tunbridge Wells, England-based IT managed services company. Their services include IT managed services and ERP consulting and SI.Read More
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157$1,000+50 - 249 employeesLondon, EnglandAkita is an IT managed services company. The team is headquartered in Sevenoaks, England and London, England, and their services include IT managed services and cloud consulting & SI.Read More
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158$1,000+2 - 9 employeesLondon, EnglandMetical Technologies, a Cybersecurity company, is in London, England. Founded in 2021, the team focuses on Cybersecurity and IT strategy consulting.Read More
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159$10,000+10 - 49 employeesLondon, EnglandPeru Consulting Ltd is an Enterprise App Modernization company. They offer Enterprise App Modernization and BI & big data consulting & SI and were founded in 2012.Read More
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160$1,000+10 - 49 employeesKenton, EnglandSazeb Tech Consulting is a Lahore, Pakistan-based IT strategy consulting company. Launched in 2019, the team focuses on IT strategy consulting and BI & big data consulting & SI.Read More
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161$1,000+10 - 49 employeesLondon, EnglandSwenta Solutions is a cloud consulting & SI company. Their team is in London, England. The firm specializes in cloud consulting & SI and Cybersecurity.Read More
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162$1,000+10 - 49 employeesLondon, EnglandLaunched in 2019, Techsub.IT is an IT strategy consulting company. The agency offers IT strategy consulting and cloud consulting & SI, and is small.Read More
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163$1,000+10 - 49 employeesOrpington, EnglandNetNavi is an IT strategy consulting company. Launched in 2022, the agency provides IT strategy consulting and cloud consulting & SI.Read More
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164$5,000+2 - 9 employeesLondon, EnglandStabilise, a big data analytics company, was founded in 2025. The company offers BI & big data consulting & SI and Cybersecurity.Read More
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165$5,000+10 - 49 employeesLondon, EnglandExact Solutions is a London, England-based IT managed services company. Their services include IT managed services and cloud consulting & SI.Read More
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166$100,000+50 - 249 employeesLondon, EnglandCaystard Group Intl is an IT strategy consulting company. They are in New York, New York and Kampala, Uganda. Their team offers IT strategy consulting and cloud consulting & SI.Read More
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167$50,000+250 - 999 employeesLondon, EnglandSoftware development firm G10X was launched in 2018. The agency focuses on Custom Software Development and Blockchain.Read More
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168Undisclosed250 - 999 employeesLondon, EnglandCHEQ is a midsize Compliance Consulting company established in 2016. Their team provides Compliance Consulting and Cybersecurity.Read More
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169Undisclosed250 - 999 employeesCity of London, EnglandNetwrix Corporation is a Frisco, Texas-based IT strategy consulting company. Established in 2006, the team specializes in IT strategy consulting and Cybersecurity.Read More
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170$10,000+10 - 49 employeesLondon, EnglandWisdom Works, an AI development company, was founded in 2020. The team provides Artificial Intelligence and IT strategy consulting.Read More
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171Undisclosed10 - 49 employeesLondon, EnglandAstec Computing (UK) Ltd, an IT managed services company, was established in 1992. The team focuses on IT managed services and cloud consulting & SI.Read More
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172$1,000+2 - 9 employeesLondon, EnglandNovix IT is an IT strategy consulting company. Located in Edinburgh, Scotland and London, England, their team specializes in IT strategy consulting and BI & big data consulting & SI.Read More
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173$1,000+2 - 9 employeesLondon, EnglandBased in London, England, Promax IT Solutions is an IT managed services company. They specialize in IT managed services and Cybersecurity.Read More
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174Undisclosed2 - 9 employeesLondon, EnglandSeltech IT Services Ltd is a cloud consulting & SI company. They were founded in 2011 and focus on cloud consulting & SI and Cybersecurity.Read More
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175$1,000+10 - 49 employeesLondon, EnglandEstablished in 2018, Ictnet Limited is a small IT strategy consulting company. Their team offers IT strategy consulting and BI & big data consulting & SI.Read More
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176$1,000+10 - 49 employeesLondon, EnglandProStep Technologies is a cloud consulting & SI company. Launched in 2021, the team focuses on cloud consulting & SI and Cybersecurity. The agency is headquartered in London, England.Read More
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177Undisclosed10 - 49 employeesLondon, EnglandInteguards LTD is a Market Research company. The London, England-based firm was established in 2025. Their services include Market Research and IT strategy consulting.Read More
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178Undisclosed10 - 49 employeesDartford, EnglandCortec IT, a social media marketing firm, is in Dartford, England. They focus on Social Media Marketing and Search Engine Optimization.Read More
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179$1,000+10 - 49 employeesLondon, EnglandCritical Cloud is a cloud consulting & SI company. Established in 2024, their team focuses on cloud consulting & SI and Cybersecurity.Read More
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180$1,000+10 - 49 employeesLondon, EnglandSEO services firm Cyberonics Limited is located in London, England. Established in 2025, the team specializes in Search Engine Optimization and cloud consulting & SI.Read More
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