Top 100 Cybersecurity Companies in London
The Best of December 2025Looking 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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241Undisclosed50 - 249 employeesLondon, EnglandAzeemi Technologies, a midsize IT strategy consulting company, is based in New York, New York and London, England. Their services include IT strategy consulting and ERP consulting and SI.Read More
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242Undisclosed50 - 249 employeesLondon, EnglandUBDS Digital is a cloud consulting & SI company in London, England. Their services include cloud consulting & SI and Cybersecurity.Read More
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243Undisclosed50 - 249 employeesLiverpool, EnglandMidsize Cybersecurity company IriusRisk, is headquartered in Alpharetta, Georgia and Liverpool, England. The team specializes in Cybersecurity and Artificial Intelligence.Read More
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244Undisclosed50 - 249 employeesLondon, EnglandEstablished in 2019, Ingentive, a midsize Cybersecurity company, is headquartered in London, England. Their team specializes in Cybersecurity and IT managed services.Read More
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245Undisclosed10 - 49 employeesMoorgate, EnglandNg experts, an IT managed services company, provides IT managed services and Cybersecurity. The company is in Moorgate, England.Read More
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246$10,000+1,000 - 9,999 employeesBourne End, EnglandRead More
Pomeroy is an IT infrastructure solutions company based in Hebron, KY, with offices in Bourne End, UK, Pittsburgh, PA, and New York. Since it was founded in 1982, the team has grown to over 3,00 employees. Pomeroy provides IT managed services, non-voice BPO/back office services, and cybersecurity capabilities.
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247$1,000+2 - 9 employeesBarnet, EnglandCloud consulting & SI company Gclouds IT Consultancy Ltd provides cloud consulting & SI and IT strategy consulting. They are in Barnet, England.Read More
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248Undisclosed2 - 9 employeesRadlett, EnglandAmazing Support is an IT strategy consulting company. They are located in Radlett, England. Their team focuses on IT strategy consulting and cloud consulting & SI.Read More
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249Undisclosed2 - 9 employeesCity of London, EnglandSonar IT is an IT strategy consulting company. The City of London, England-based firm was established in 2019. Their team focuses on IT strategy consulting and cloud consulting & SI.Read More
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250Undisclosed2 - 9 employeesCroydon, EnglandEstablished in 2001, Ingenious Ltd is a small IT strategy consulting company headquartered in Croydon, England. Their team focuses on IT strategy consulting and cloud consulting & SI.Read More
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251Undisclosed2 - 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
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252Undisclosed2 - 9 employeesLondon, EnglandKalita Partners is a Cybersecurity company. Their team is based in London, England and Paris, France and specializes in Cybersecurity and Business Consulting.Read More
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253Undisclosed2 - 9 employeesLondon, EnglandEstablished in 2020, Emergent Consulting is a small London, England-based Cybersecurity company. Their services include Cybersecurity and Blockchain.Read More
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254Undisclosed2 - 9 employeesRomford, EnglandIT Department is a Romford, England-based IT strategy consulting company. Their services include IT strategy consulting and unified communications consulting & SI.Read More
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255$5,000+10 - 49 employeesLondon, EnglandCapita Cyber Security is an IT managed services company located in London, England. The team focuses on IT managed services and Cybersecurity.Read More
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256Undisclosed10 - 49 employeesLondon, EnglandReckon Digital is an artificial intelligence company. The London, England-based firm offers Artificial Intelligence and UX/UI Design.Read More
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257Undisclosed10 - 49 employeesLondon, EnglandIoT development company floLIVE is located in London, England. Established in 2015, the team provides IoT development and cloud consulting & SI.Read More
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258Undisclosed10 - 49 employeesCity of London, EnglandComputers in the City is an IT strategy consulting company. The team provides IT strategy consulting and IT managed services, and the agency is headquartered in City of London, England.Read More
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259Undisclosed10 - 49 employeesLondon, EnglandCompliance Consulting company Goldilock was established in 2020. The small team offers Compliance Consulting and BI & big data consulting & SI.Read More
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260Undisclosed10 - 49 employeesLondon, EnglandOpen Search Network is a big data company. Their small team of employees is located in London, England. Their team focuses on BI & big data consulting & SI and Cybersecurity.Read More
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261Undisclosed10 - 49 employeesLondon, EnglandBlinx Technology Ltd is an IT strategy consulting company. They are located in London, England and New York, New York and have small team. They focus on IT strategy consulting and IT managed services.Read More
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262Undisclosed10 - 49 employeesLondon, EnglandBramfitt Technology Labs is a London, England-based Cybersecurity company. Their services include Cybersecurity and UX/UI Design.Read More
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263Undisclosed10 - 49 employeesLondon, EnglandFounded in 2014, Aligne is a big data analytics company. The agency offers BI & big data consulting & SI and Cybersecurity, and is small.Read More
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264Undisclosed10 - 49 employeesLondon, EnglandMicrobyte Solutions Limited is a small Portland, Oregon-based cloud consulting & SI company. The team specializes in cloud consulting & SI and IT managed services.Read More
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265$1,000+Freelancer employeesLondon, EnglandFounded in 2025, veyaworks ltd is an IT strategy consulting company. The firm provides IT strategy consulting and Digital Strategy.Read More
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266$5,000+250 - 999 employeesLondon, EnglandIT Lab, an IT managed services company, was launched in 1998. The team offers IT managed services and other IT consulting and SI and is headquartered in London, England and Woking, England.Read More
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267Undisclosed250 - 999 employeesLondon, EnglandTPXimpact Ltd is a London, England-based SEO company. The team provides Search Engine Optimization and UX/UI Design.Read More
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268Undisclosed250 - 999 employeesCity of London, EnglandSparta Global, an Application Testing company, was established in 2014. The midsize team specializes in Application Testing and Market Research.Read More
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269Undisclosed250 - 999 employeesLondon, EnglandRED Global is a cloud consulting & SI company. The team is in London, England and Frankfurt am Main, Germany, and their services include cloud consulting & SI and Cybersecurity.Read More
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270Undisclosed50 - 249 employeesFarnborough, EnglandRead More
Midsize Cybersecurity company Foresite Cybersecurity, is located in Overland Park, Kansas and Farnborough, England. Established in 2013, the team provides Cybersecurity, Compliance Consulting, cloud consulting & SI, and IT managed services.
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