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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181Undisclosed250 - 999 employeesCity of London, EnglandLaunched in 2014, Contino is a cloud consulting & SI and Cybersecurity company. The company focuses on cloud consulting & SI and Cybersecurity, and is midsize.Read More
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182Undisclosed50 - 249 employeesLondon , EnglandDarkbeam is a midsize Cybersecurity company launched in 2017. Their team specializes in Cybersecurity.Read More
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183Undisclosed2 - 9 employeesLondon, EnglandLaunched in 2015, Cobwebs Technologies is a small Cybersecurity company. Their services include Cybersecurity and Artificial Intelligence.Read More
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184Undisclosed10 - 49 employeesLondon, EnglandOrpheus Cyber, a Cybersecurity company, is based in London, England and McLean, Virginia. The team focuses on Cybersecurity.Read More
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185Undisclosed250 - 999 employeesLondon, EnglandCamms is a Cybersecurity and Business Consulting company. Established in 1996, the agency specializes in Cybersecurity and Business Consulting.Read More
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186Undisclosed250 - 999 employeesCity of London, EnglandCybersecurity company Adarma Security is located in Edinburgh, Scotland and City of London, England. Their services include Cybersecurity and BI & big data consulting & SI.Read More
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187Undisclosed50 - 249 employeesLondon, EnglandOccamSec, a midsize Cybersecurity company, is in New York, New York and London, England. Their services include Cybersecurity.Read More
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188Undisclosed250 - 999 employeesLondon, EnglandQuorum Cyber is a midsize Tampa, Florida-based Cybersecurity company. Their services include Cybersecurity.Read More
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189Undisclosed10 - 49 employeesLondon, EnglandLaunched in 2014, ConvergentDS LLC is a small Cybersecurity company. Their services include Cybersecurity and IT strategy consulting.Read More
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190Undisclosed250 - 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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191$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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192$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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193$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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194$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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195$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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196$1,000+2 - 9 employeesLondon, EnglandSmall Compliance Consulting company Locked Stack Inc, is in London, England. Their services include Compliance Consulting and Cybersecurity.Read More
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197$50,000+2 - 9 employeesLondon, EnglandLocated in London, England, International Cyber Asset Recovery (ICAR) is a Cybersecurity company. Founded in 2015, the team specializes in Cybersecurity and Finance Law.Read More
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198$1,000+2 - 9 employeesLondon, EnglandSmall IT strategy consulting company Northstar IT & Cyber Advisory Limited, is headquartered in Kennington, England and London, England. The team focuses on IT strategy consulting and Cybersecurity.Read More
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199$10,000+2 - 9 employeesLondon, EnglandBased in London, England, IrongateSolutions is a Cybersecurity company. The team specializes in Cybersecurity and Manufacturing Consulting.Read More
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200$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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201$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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202$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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203$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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204$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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205$5,000+10 - 49 employeesLondon, EnglandLaunched in 2026, Intersite Studios, a small IT strategy consulting company, is in London, England. Their team offers IT strategy consulting and Cybersecurity.Read More
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206$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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207$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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208$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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209Undisclosed10 - 49 employeesLondon, EnglandAdvantage Business Systems is an ERP consulting and SI company founded in 1999. The team focuses on ERP consulting and SI and CRM consulting and SI.Read More
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210$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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