Top 100 Cybersecurity Companies in London
The Best of April 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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121$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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122$1,000+10 - 49 employeesPurfleet, EnglandIT managed services company Euro Systems offers IT managed services and cloud consulting & SI. They were founded in 2009.Read More
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123$50,000+10 - 49 employeesBrentford, EnglandFindErnest is a web design company. The firm is based in Hyderabad, India and Brentford, England. Their services include Web Design and UX/UI Design.Read More
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124Undisclosed2 - 9 employeesLondon, EnglandEstablished in 2025, Fig Group is a small London, England-based Cybersecurity company. Their team offers Cybersecurity and IT strategy consulting.Read More
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125$1,000+10 - 49 employeeslondon, EnglandLucidica IT Support London, an IT managed services company, is headquartered in london, England. The team offers IT managed services and IT strategy consulting.Read More
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126Undisclosed10 - 49 employeesLondon, EnglandSolid Systems is an IT managed services company. Located in Cape Town, South Africa and Johannesburg, South Africa, their team focuses on IT managed services and cloud consulting & SI.Read More
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127Undisclosed10 - 49 employeesLondon, EnglandFounded in 2017, Astec IT Consultancy LTD is a cloud consulting & SI company. The small team offers cloud consulting & SI and Cybersecurity.Read More
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128$10,000+10 - 49 employeesLondon, EnglandRead More
Awesome Resources Ltd is a PR firm founded in 2010 with more than 10 employees. They offer digital strategy, social media marketing, and PR solutions from their office in London. They work with clients ranging from small startups to large companies.
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129$25,000+10 - 49 employeesLondon, EnglandSmall Architectural Design company Lyon Tech, is headquartered in London, England. Their services include Architectural Design and cloud consulting & SI.Read More
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130$5,000+50 - 249 employeesLondon, EnglandRead More
Suntel Analytics, LLC is a West Palm Beach, Florida-based AI development company. Launched in 2022, the small team focuses on Artificial Intelligence, business consulting, corporate training, ai consulting, and more.
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131$5,000+50 - 249 employeesLondon, EnglandRead More
RiskIQ is a cybersecurity company based in San Francisco with a team of just over 150 employees. Established in 2009, they provide cybersecurity, business intelligence, big data consulting, and software integration services to clients in a variety of industries.
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132$5,000+250 - 999 employeesLondon, EnglandBased in San Francisco, California and Reston, Virginia, Lookout is a Cybersecurity company. They specialize in Cybersecurity.Read More
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133$5,000+50 - 249 employeesLondon, EnglandIOActive is a Cybersecurity company. Located in Seattle, Washington and London, England, the agency was launched in 1998. Their team focuses on Cybersecurity.Read More
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134$10,000+250 - 999 employeesSlough, EnglandGuidance Software is a Cybersecurity company. Their midsize team is based in Pasadena, California and New York, New York. Their services include Cybersecurity and IT strategy consulting.Read More
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135$10,000+250 - 999 employeesLondon, EnglandCybereason is a Cybersecurity company. They are in Boston, Massachusetts and London, England, and their services include Cybersecurity and BI & big data consulting & SI.Read More
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136$10,000+250 - 999 employeesLondon, EnglandDigital Guardian, a midsize IT managed services company, is in Waltham, Massachusetts and Reston, Virginia. The team specializes in IT managed services and Cybersecurity.Read More
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137$10,000+250 - 999 employeesLondon, EnglandVeracode is a Cybersecurity company located in Burlington, Massachusetts and London, England. They focus on Cybersecurity and Application Testing and were established in 2006.Read More
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138$1,000+1,000 - 9,999 employeesLondon, EnglandEmagine Consulting is a big data analytics company headquartered in London, England and Nanterre, France. They focus on BI & big data consulting & SI and Cybersecurity and were launched in 1994.Read More
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139$5,000+50 - 249 employeesLondon, EnglandLaunched in 2011, Digital Shadows is a Cybersecurity company. The midsize team specializes in Cybersecurity.Read More
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140Undisclosed50 - 249 employeesLondon, EnglandRavelin Technology is an AI company and Cybersecurity company. They were launched in 2014, and their services include Artificial Intelligence and Cybersecurity.Read More
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141Undisclosed10 - 49 employeesCity of London, EnglandISTARI, a Cybersecurity company, was established in 2020. The team provides Cybersecurity and IT managed services.Read More
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142Undisclosed2 - 9 employeesCity of London, EnglandCybersecurity company Identiom Limited is headquartered in City of London, England. Their services include Cybersecurity and IT managed services.Read More
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143Undisclosed50 - 249 employeesCity of London, EnglandCrossword Cybersecurity Plc is a Cybersecurity company. The City of London, England-based agency was founded in 2014. Their team offers Cybersecurity and IT managed services.Read More
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144Undisclosed1,000 - 9,999 employeesLondon, EnglandEstablished in 1999, Secureworks is a large Atlanta, Georgia-based Cybersecurity company. Their services include Cybersecurity.Read More
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145Undisclosed50 - 249 employeesLondon, EnglandLaunched in 2011, ThreatSpike Labs is a midsize Cybersecurity company based in London, England. Their team specializes in Cybersecurity.Read More
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146Undisclosed10 - 49 employeesLondon, EnglandHeadquartered in London, England, Darklabs is a small Cybersecurity company. Their services include Cybersecurity.Read More
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147Undisclosed250 - 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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148Undisclosed50 - 249 employeesLondon , EnglandDarkbeam is a midsize Cybersecurity company launched in 2017. Their team specializes in Cybersecurity.Read More
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149Undisclosed2 - 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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150Undisclosed10 - 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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