Top 100 Cybersecurity Companies in London
The Best of August 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.
Jump to Most Reviewed Companies
List of the Best London Cybersecurity Consultants
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271$1,000+Freelancer employeesLondon, EnglandFifth Ace is a Cybersecurity company. They provide Cybersecurity and were founded in 2025.Read More
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272$5,000+10 - 49 employeesLondon, EnglandLineal is a small Business Consulting company based in London, England and Hong Kong, Hong Kong. Their services include Business Consulting and Cybersecurity.Read More
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273Undisclosed250 - 999 employeesLondon, EnglandKekst CNC, a PR firm, was founded in 2018. The midsize team specializes in Public Relations and Litigation Support Services.Read More
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274Undisclosed250 - 999 employeesCity of London, EnglandInnoWave is a Cybersecurity company launched in 2008. Their team focuses on Cybersecurity and UX/UI Design.Read More
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275Undisclosed250 - 999 employeesLondon, EnglandRoboyo is a midsize London, England-based Cybersecurity company. The team focuses on Cybersecurity and IT managed services.Read More
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276Undisclosed250 - 999 employeesCity of London, EnglandIn City of London, England and Birmingham, England, Computer Futures is a cloud consulting & SI company. Founded in 1986, the team provides cloud consulting & SI and CRM consulting and SI.Read More
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277Undisclosed50 - 249 employeesLondon, EnglandFounded in 2014, Auxesis Group is a Blockchain company. Based in Mumbai, India and London, England, the team focuses on Blockchain and Cybersecurity.Read More
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278Undisclosed50 - 249 employeesCity of London, EnglandRidgewall, a midsize IT managed services company, is in City of London, England. The team specializes in IT managed services and cloud consulting & SI.Read More
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279Undisclosed50 - 249 employeesCity of London, EnglandWizard Cyber is a Cybersecurity company. Launched in 2017, the firm is headquartered in City of London, England. Their team offers Cybersecurity and cloud consulting & SI.Read More
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280Undisclosed10 - 49 employeesCity of London, EnglandPriority One IT is a cloud consulting & SI company. Their team is based in City of London, England and specializes in cloud consulting & SI and Cybersecurity.Read More
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281$1,000+10 - 49 employeesHildenborough, EnglandRSK Cyber Security is a Cybersecurity company launched in 2021. The small Hildenborough, England-based team specializes in Cybersecurity, Application Testing, and cloud consulting & SI.Read More
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282Undisclosed2 - 9 employeesLondon, EnglandLaunched in 2015, Imperial Security is a Cybersecurity and Business Consulting company. The team specializes in Cybersecurity and Business Consulting.Read More
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283$50,000+1,000 - 9,999 employeesGuildford, EnglandIntellias is a custom software development company established in 2002. Located in Kraków, Poland; L'viv, Ukraine; Chicago, Illinois and Málaga, Spain, their large team specializes in Custom Software Development, Generative AI, BI & big data consulting & SI, Cybersecurity, and more.Read More
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HERE TechnologiesIndustries
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284Undisclosed10 - 49 employeesLondon, EnglandFounded in 2018, Principle Networks Ltd, a small Cybersecurity company, is located in London, England. Their services include Cybersecurity and cloud consulting & SI.Read More
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Hill Dickinson LLP Iris Software Hargreaves Services Plc Buzz BingoIndustries
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285Undisclosed2 - 9 employeesCity of London, EnglandIn City of London, England and Phoenix, Arizona, Dasuni Limited is a Cybersecurity company. They specialize in Cybersecurity and IT managed services and were founded in 2005.Read More
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286Undisclosed2 - 9 employeesLondon, EnglandHeadquartered in London, England, Realize Security is a small cloud consulting & SI company. Their services include cloud consulting & SI and Cybersecurity.Read More
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287$5,000+10 - 49 employeesLondon, EnglandForation Limited is a London, England-based cloud consulting & SI company. They provide cloud consulting & SI and Cybersecurity.Read More
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288Undisclosed10 - 49 employeesLondon, EnglandAimBrain is an AI company. Established in 2014, the firm is in London, England. Their services include Artificial Intelligence and Cybersecurity.Read More
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289Undisclosed10 - 49 employeesCity of London, EnglandHeadquartered in City of London, England and Dehradun, India, RedHunt Labs is a small Cybersecurity company. Their services include Cybersecurity and BI & big data consulting & SI.Read More
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290Undisclosed50 - 249 employeesLondon, EnglandFeaturespace is an artificial intelligence company. Launched in 2008, the firm is based in Cambridge, England and London, England. Their services include Artificial Intelligence and Cybersecurity.Read More
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291Undisclosed50 - 249 employeesCity of London, EnglandHeadquartered in City of London, England, UK IT SERVICE is a midsize IT strategy consulting company. Their services include IT strategy consulting and cloud consulting & SI.Read More
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292Undisclosed50 - 249 employeesCity of London, EnglandTribeca Technology Group is an IT strategy consulting company. They focus on IT strategy consulting and Cybersecurity and were launched in 2006.Read More
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293$1,000+2 - 9 employeesLondon, EnglandBaycop, a small IT managed services company, is located in London, England and Colombo, Sri Lanka. The team specializes in IT managed services and Cybersecurity.Read More
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294UndisclosedFreelancer employeesLondon, EnglandLocated in London, England, Cysnova is a Cybersecurity company. Launched in 2025, the team specializes in Cybersecurity and IT strategy consulting.Read More
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295Undisclosed2 - 9 employeesOxted, Surrey, EnglandFounded in 2019, Tech Results Ltd. Is a small IT managed services company. Their services include IT managed services and Cybersecurity.Read More
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296Undisclosed2 - 9 employeesCity of London, EnglandJAW Consulting UK is a Cybersecurity company. They were launched in 2008, and their services include Cybersecurity and IT managed services.Read More
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297Undisclosed2 - 9 employeesCity of London, EnglandCybersecurity company Defensity was launched in 2019. The team specializes in Cybersecurity and IT strategy consulting.Read More
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298Undisclosed10 - 49 employeesCity of London, EnglandIT strategy consulting company Neos-IT was founded in 2001. The agency focuses on IT strategy consulting and cloud consulting & SI.Read More
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299Undisclosed10 - 49 employeesCity of London, EnglandLabyrinth Technology is an IT strategy consulting company. Established in 2001, the firm provides IT strategy consulting and cloud consulting & SI.Read More
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300Undisclosed10 - 49 employeesCity of London, EnglandPortman Tech, an IT strategy consulting company, was founded in 2004. The company specializes in IT strategy consulting and cloud consulting & SI.Read More
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