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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121Undisclosed1,000 - 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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122Undisclosed50 - 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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123Undisclosed10 - 49 employeesLondon, EnglandHeadquartered in London, England, Darklabs is a small Cybersecurity company. Their services include Cybersecurity.Read More
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124Undisclosed250 - 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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125Undisclosed50 - 249 employeesLondon , EnglandDarkbeam is a midsize Cybersecurity company launched in 2017. Their team specializes in Cybersecurity.Read More
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126Undisclosed10 - 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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127Undisclosed250 - 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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128Undisclosed250 - 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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129Undisclosed50 - 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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130Undisclosed250 - 999 employeesLondon, EnglandQuorum Cyber is a midsize Tampa, Florida-based Cybersecurity company. Their services include Cybersecurity.Read More
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131Undisclosed10 - 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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132Undisclosed250 - 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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133$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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134$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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135$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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136Undisclosed50 - 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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137$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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138$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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139$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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140$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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141$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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142$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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143$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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144$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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145$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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146$1,000+10 - 49 employeesLondon, EnglandIT managed services company CloudTech24 is based in Send, England and London, England. They focus on IT managed services and Cybersecurity and were launched in 2016.Read More
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147$50,000+250 - 999 employeesKakkanad, IndiaSoftware development firm G10X was launched in 2018. The agency focuses on Custom Software Development and Blockchain.Read More
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148Undisclosed250 - 999 employeesLondon, EnglandCHEQ is a midsize Compliance Consulting company established in 2016. Their team provides Compliance Consulting and Cybersecurity.Read More
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149Undisclosed250 - 999 employeesCity of London, EnglandNetwrix Corporation is a Frisco, Texas-based IT strategy consulting company. Established in 2006, the team specializes in IT strategy consulting and Cybersecurity.Read More
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150$10,000+10 - 49 employeesLondon, EnglandWisdom Works, an AI development company, was founded in 2020. The team provides Artificial Intelligence and IT strategy consulting.Read More
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