Top 100 Cybersecurity Companies in London
The Best of October 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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241$10,000+2 - 9 employeesLondon, EnglandIn London, England, Altidia Consulting is a small IT strategy consulting company. Their services include IT strategy consulting and cloud consulting & SI.Read More
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242$1,000+2 - 9 employeesNew Malden, EnglandVMR Check is a small IT strategy consulting company in New Malden, England and Southall, England. The team specializes in IT strategy consulting and cloud consulting & SI.Read More
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243Undisclosed2 - 9 employeesLondon, EnglandEstablished in 2023, Dream Delegate is a SEO agency. The team offers Search Engine Optimization and Cybersecurity.Read More
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244Undisclosed2 - 9 employeesLondon, EnglandEstablished in 2025, Cloudline Consulting is a Cybersecurity company. The agency provides Cybersecurity and cloud consulting & SI.Read More
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245$5,000+2 - 9 employeesLondon, EnglandIT strategy consulting company Cognoscere Associates Limited is based in London, England. The team specializes in IT strategy consulting and AI Consulting.Read More
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246$5,000+2 - 9 employeesHarrow, EnglandBased in Harrow, England, Server Consultancy Ltd is a small IT managed services company. The team provides IT managed services and cloud consulting & SI.Read More
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247$50,000+50 - 249 employeesLondon, EnglandVast Dreams, a custom software development company, was established in 2020. They provides Custom Software Development and Enterprise App Modernization.Read More
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248Undisclosed50 - 249 employeesCity of London, EnglandCybersecurity company Obrela was founded in 2010. Located in City of London, England, the team specializes in Cybersecurity and BI & big data consulting & SI.Read More
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249Undisclosed50 - 249 employeesCity of London, EnglandRiverSafe Limited, a Cybersecurity company, was established in 2008. The team offers Cybersecurity and cloud consulting & SI.Read More
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250Undisclosed50 - 249 employeesCity of London, EnglandSureCloud is a Cybersecurity company. The team specializes in Cybersecurity and BI & big data consulting & SI, and the agency is in Reading, England and City of London, England.Read More
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251Undisclosed1,000 - 9,999 employeesLondon, EnglandK2 Partnering Solutions is a CRM consulting and SI company. They are headquartered in London, England, and their services include CRM consulting and SI and ERP consulting and SI.Read More
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252$1,000+10 - 49 employeesLondon, EnglandSocium is a small London, England-based IT strategy consulting company. Their services include IT strategy consulting and IT managed services.Read More
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253$5,000+10 - 49 employeesLondon, EnglandBig data company London Data Consuting (LDC) was founded in 2016. The firm offers BI & big data consulting & SI and cloud consulting & SI, and is small.Read More
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254$1,000+10 - 49 employeesLondon, EnglandField Tech Services LTD is an IT managed services company. The firm is located in London, England. Their services include IT managed services and IT strategy consulting.Read More
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255Undisclosed50 - 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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256$1,000+10 - 49 employeesLondon, EnglandCyberSRC Consultancy LLP is a Cybersecurity company. The team provides Cybersecurity and Application Testing and is headquartered in Noida, India and London, England.Read More
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257$1,000+2 - 9 employeesLondon, EnglandStackcrafters Ltd is a software development company. They are based in London, England and have small team of experts. Their services include Custom Software Development and Web Development.Read More
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258$5,000+2 - 9 employeesLondon, EnglandKootek Consulting Ltd is an ERP consulting and SI company founded in 2024. The firm specializes in ERP consulting and SI and IT strategy consulting.Read More
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259$5,000+2 - 9 employeesLondon, EnglandSapena Technologies Ltd is an IT strategy consulting company. Headquartered in London, England, the agency focuses on IT strategy consulting and unified communications consulting & SI.Read More
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260$1,000+2 - 9 employeesLondon, EnglandGrayscaled, a Computer Engineering company, was established in 2026. The team provides Computer Engineering and IT strategy consulting and is located in London, England.Read More
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261$1,000+2 - 9 employeesSidcup, EnglandSpecifek Ltd is a custom software development firm. The firm is based in Sidcup, England. Their services include Custom Software Development and Cybersecurity.Read More
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262$10,000+2 - 9 employeesCanary Wharf, EnglandSoftware Major is a software development company and Cybersecurity company established in 2005. The firm specializes in Custom Software Development and Cybersecurity, and is small.Read More
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263Undisclosed2 - 9 employeesLondon, EnglandTeskaLabs is an IoT development and Cybersecurity company established in 2014. The small team offers IoT development and Cybersecurity.Read More
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264$10,000+10 - 49 employeesLondon, EnglandM Solutions, a small Cybersecurity company, is based in London, England. The team offers Cybersecurity and Custom Software Development.Read More
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265$10,000+10 - 49 employeesLondon, EnglandTetra Technology, an user experience design agency, was launched in 2018. The agency specializes in UX/UI Design and BI & big data consulting & SI.Read More
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266$1,000+10 - 49 employeesDartford, EnglandCloudBunch is a cloud consulting & SI company located in Dartford, England. Launched in 2021, the team provides cloud consulting & SI and IT staff augmentation.Read More
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267Undisclosed50 - 249 employeesCity of London, EnglandIT strategy consulting company Cardonet was launched in 1999. The team offers IT strategy consulting and Cybersecurity.Read More
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268Undisclosed2 - 9 employeesLondon, EnglandBlackgate Tech is a small IT managed services company. The London, England-based firm was established in 2026. Their team specializes in IT managed services, AI Agents, and Cybersecurity.Read More
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269Undisclosed2 - 9 employeesLondon, EnglandArthur Russell Group is a big data analytics company founded in 2024. Their services include BI & big data consulting & SI and cloud consulting & SI.Read More
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270$1,000+2 - 9 employeesLondon, EnglandBlue Verge Digital Ltd is an Email Marketing company. The London, England-based company was established in 2024. Their services include Email Marketing and Search Engine Optimization.Read More
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