Top 100 Cybersecurity Companies in London
The Best of July 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.
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List of the Best London Cybersecurity Consultants
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91Undisclosed10 - 49 employeesLondon, EnglandHeadquartered in London, England, Zero Trust Solutions is a Cybersecurity company. Their services include Cybersecurity and Microservices Architecture Services.Read More
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92$1,000+2 - 9 employeesLondon, EnglandBlue Icon IT is a Cybersecurity company. They are located in London, England, and their services include Cybersecurity and IT managed services.Read More
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93$5,000+10 - 49 employeesLondon, EnglandLaunched in 1999, Lucidica is an IT managed services company. The agency offers IT managed services and Cybersecurity.Read More
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94Undisclosed50 - 249 employeesLondon, EnglandStripe OLT is a Cybersecurity company. The company is in Bristol, England and London, England. Their team provides Cybersecurity and IT managed services.Read More
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95$1,000+10 - 49 employeesBeckenham, EnglandGregory Micallef Associates is an IT managed services company. They offer IT managed services and Call Center Services and were launched in 1992.Read More
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96$1,000+2 - 9 employeesLondon, EnglandPxosys Ltd is a Cybersecurity company. The London, England-based firm focuses on Cybersecurity and cloud consulting & SI.Read More
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97$10,000+1,000 - 9,999 employeesLondon, EnglandTelefónica Tech (EN) is a Cybersecurity company. They are in London, England, and their services include Cybersecurity and IT managed services.Read More
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98Undisclosed10 - 49 employeesLondon, EnglandEstablished in 2021, KOBU SMART LTD is a small London, England-based cloud consulting & SI company. Their team specializes in cloud consulting & SI and Cybersecurity.Read More
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99Undisclosed10 - 49 employeesLondon, EnglandLAN Support Systems Ltd is a Godalming, England-based IT managed services company. Their services include IT managed services and Cybersecurity.Read More
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100Undisclosed50 - 249 employeesLondon, EnglandIT managed services company Doherty Associates focuses on IT managed services and Cybersecurity. They are located in London, England.Read More
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101$5,000+1,000 - 9,999 employeesLondon, EnglandEmagine is an IT managed services company established in 2001. The firm offers IT managed services and IT staff augmentation.Read More
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102Undisclosed10 - 49 employeesLondon, EnglandLaunched in 2017, Hazy is a small big data company. Their services include BI & big data consulting & SI and Artificial Intelligence.Read More
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103Undisclosed250 - 999 employeesLondon, EnglandHeadquartered in Singapore, Singapore and Makati, Philippines, Adventus is an IT strategy consulting company. They focus on IT strategy consulting and cloud consulting & SI.Read More
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104$1,000+10 - 49 employeesLondon, EnglandMacnitech is a cloud consulting & SI company. The company is located in London, England. Their services include cloud consulting & SI and Cybersecurity.Read More
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105$5,000+10 - 49 employeesLondon, EnglandLaunched in 2002, zsah Limited is a cloud consulting & SI company. The team offers cloud consulting & SI and BI & big data consulting & SI.Read More
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106$1,000+2 - 9 employeesLondon, EnglandLaunched in 2024, Coreitech is an IT managed services company. The team offers IT managed services and Cybersecurity.Read More
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107Undisclosed2 - 9 employeesLondon, EnglandLaunched in 2021, Social Media Experts Ltd is a small London, England-based Cybersecurity company. Their services include Cybersecurity and Internet & Technology Law.Read More
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108$1,000+10 - 49 employeesFitzrovia, London, EnglandWeb development firm OWA Digital is based in Oxford, England and Fitzrovia, London, England. Their services include Web Development and Mobile App Development.Read More
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109$1,000+10 - 49 employeesLondon, EnglandDr Logic is an IT managed services company. Launched in 2003, the team provides IT managed services and Cybersecurity. The firm is based in London, England.Read More
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110$1,000+2 - 9 employeesLondon, EnglandCybersecurity company Custodia Cyber is headquartered in London, England. The team provides Cybersecurity and IT managed services.Read More
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111Undisclosed2 - 9 employeesBrookmans Park, EnglandLBM Cyber is a Cybersecurity and Corporate Training & Coaching company. The Brookmans Park, England-based firm offers Cybersecurity and Corporate Training & Coaching.Read More
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112Undisclosed50 - 249 employeesLondon, EnglandIT managed services company ITVET is located in Bishop's Stortford, England and London, England. Launched in 2007, the team offers IT managed services and IT strategy consulting.Read More
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113Undisclosed2 - 9 employeesLondon, EnglandStreym Ltd is an IT strategy consulting company headquartered in London, England. They offer IT strategy consulting and Cybersecurity and were founded in 2006.Read More
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114Undisclosed250 - 999 employeesLondon, EnglandZenzero is an IT managed services company. The midsize London, England-based team offers IT managed services and Cybersecurity. The company was established in 2004.Read More
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115$1,000+10 - 49 employeesLondon, EnglandIG-Smart Ltd is a Cybersecurity company. Their team is located in London, England. The company specializes in Cybersecurity and IT managed services.Read More
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116$5,000+50 - 249 employeesLondon, EnglandOryxAlign is a midsize IT strategy consulting company. They provide IT strategy consulting and cloud consulting & SI and were founded in 2006.Read More
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117Undisclosed2 - 9 employeesLondon, EnglandNetworkIQ, an IT strategy consulting company, was established in 2009. The team focuses on IT strategy consulting and Cybersecurity and is in London, England.Read More
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118Undisclosed250 - 999 employeesLondon, EnglandSharp Business Systems UK Plc is an IT managed services company. The East Ardsley, England-based agency was established in 1964. Their services include IT managed services and Cybersecurity.Read More
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119$250,000+50 - 249 employeesShadwell, EnglandSpeedster IT, an IT strategy consulting company, was founded in 2014. The team offers IT strategy consulting and cloud consulting & SI.Read More
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120Undisclosed1,000 - 9,999 employeesLondon, EnglandFORVIS is an Accounting company established in 1923. Their team offers Accounting and Business Consulting.Read More
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