Top 90 Cybersecurity Consulting Services in London
The Best of December 2025Looking for a top cybersecurity consultant in London?
With their comprehensive approach to security, including vulnerability assessments, penetration testing, and security awareness training, cybersecurity consulting services help businesses identify and address security vulnerabilities before they can be exploited. By collaborating with cybersecurity consultants, businesses can maintain an edge over their competitors by keeping risks to finances and reputation at bay.
To assist you in your search for a partner, we’ve compiled this list of the top cybersecurity consulting firms 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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1$25,000+1,000 - 9,999 employeesLondon, EnglandRead More
ELEKS is a custom software development firm established in 1991. Their large team is in Tallinn, Estonia; L'viv, Ukraine; Berlin, Germany and Rzeszów, Poland. Their services include Custom Software Development, BI & big data consulting & SI, cloud consulting & SI, Cybersecurity, and more.
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BNY Mellon DPD Acino DRAXIndustries
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2$10,000+250 - 999 employeesGdynia, PolandRead More
Link Group Global, inc. Is an Austin, Texas-based human resources agency. The midsize company was established in 2015. Their services include HR services, IT managed services, and IT staff augmentation.
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DanoneIndustries
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3$1,000+10 - 49 employeesLondon, EnglandStingrai Inc. Is a Toronto, Canada-based Cybersecurity company. The small firm was founded in 2021. Their team offers Cybersecurity.Read More
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ClicktransIndustries
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4Undisclosed10 - 49 employeesLondon, EnglandRead More
HewardMills is a Data Protection Office (DPO) services company based in London with offices in Dublin, San Francisco, Berlin, and Zurich. The company has a team of more than 30 that provides business consulting, cybersecurity, and corporate training services to various companies.
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5$25,000+2 - 9 employeesLondon, EnglandHeadquartered in London, England, Line20 Digital is a website development firm. They offer Web Development, Cybersecurity, Web Design, and UX/UI Design and were launched in 2016.Read More
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IGN Entertainment - Ziff DavisIndustries
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6$10,000+10 - 49 employeesStaines-upon-Thames, EnglandIntelance – Enterprise Architecture & Cybersecurity Consultancy is an IT strategy consulting company launched in 2017. The agency provides IT strategy consulting, Cybersecurity, IT managed services, Custom Software Development, and more and has a small team. The agency is located in Staines-upon-Thames, England.Read More
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7$25,000+10,000+ employeesParis, FrancePersistent Systems is a data analytics company. Established in 1990, the large agency is headquartered in Pune, India; Santa Clara, California; Paris, France and Lyne, England. Their services include BI & big data consulting & SI, cloud consulting & SI, Cybersecurity, Custom Software Development, and more.Read More
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8Undisclosed250 - 999 employeesLake Oswego, ORFounded in 1986, Online Business Systems is a Cybersecurity company. The team specializes in Cybersecurity and IT strategy consulting.Read More
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9$25,000+50 - 249 employeesCity of London, EnglandOpus Technology is a Cybersecurity company. The company is in Reigate, England and City of London, England. Their services include Cybersecurity and IT managed services.Read More
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Which? The consumer champion All Saints Fred Olsen Dignity Funerals PLCIndustries
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10$25,000+1,000 - 9,999 employeesLondon, EnglandNetsol Technologies Inc. Is a Cybersecurity company. Based in Los Angeles, California and London, England, the team specializes in Cybersecurity and cloud consulting & SI.Read More
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11$1,000+1,000 - 9,999 employeesLondon, EnglandIT strategy consulting company Beryl Technologies Ltd is headquartered in London, United Kingdom and Multan, Pakistan. The firm focuses on IT strategy consulting, cybersecurity, and IT managed services and is large.The firm was launched in 2023.Read More
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12$10,000+250 - 999 employeesLondon, EnglandExponential-e, a Cybersecurity company, specializes in Cybersecurity and cloud consulting & SI. The firm is based in London, England.Read More
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13Undisclosed10 - 49 employeesLondon, EnglandGoAllSecure is a Cybersecurity company launched in 2022. The firm provides Cybersecurity and cloud consulting & SI.Read More
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14Undisclosed250 - 999 employeesLondon, EnglandRedscan is a Cybersecurity company founded in 2015. Their team offers Cybersecurity.Read More
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15$5,000+10 - 49 employeesLondon, EnglandCovertSwarm is a Cybersecurity company. Based in London, England and Wilmington, Delaware, their team offers Cybersecurity.Read More
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16$50,000+2 - 9 employeesLondon, EnglandMonsevo, a Cybersecurity company, provide Cybersecurity. They were launched in 2023.Read More
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17$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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18$1,000+10 - 49 employeesLondon, EnglandSecore Information Security Ltd is a Cybersecurity company. The London, England-based agency was launched in 2023. Their team specializes in Cybersecurity.Read More
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19Undisclosed2 - 9 employeesCity of London, EnglandCyPro, a Cybersecurity company, was established in 2021. Headquartered in City of London, England, the team focuses on Cybersecurity.Read More
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20Undisclosed10 - 49 employeesCity of London, EnglandLaunched in 2004, Cubit Technology is a small City of London, England-based IT strategy consulting company. Their services include IT strategy consulting and cloud consulting & SI.Read More
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21Undisclosed1,000 - 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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22Undisclosed250 - 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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23$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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24$250,000+50 - 249 employeesLondon, EnglandFounded in 2019, ParsBiz is an advertising company. Their midsize team is in Santa Monica, California; Paris, France; München, Germany and Madrid, Spain. Their team provides advertising, branding, social media marketing, content marketing, and more.Read More
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25$5,000+10 - 49 employeesTwickenham, England2mghealthcare is a small Twickenham, England-based Cybersecurity company. The team focuses on Cybersecurity and IT strategy consulting.Read More
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26$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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27Undisclosed10 - 49 employeesLondon, EnglandKaizen IT Solutions Ltd is an IT strategy consulting company. The team is located in Sheffield, England and London, England, and their services include IT strategy consulting and IT managed services.Read More
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28$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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29Undisclosed10 - 49 employeesLondon, EnglandHeadquartered in London, England, Darklabs is a small Cybersecurity company. Their services include Cybersecurity.Read More
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30Undisclosed10 - 49 employeesLondon, EnglandCaptavio Technologies Limited is a London, England-based Cybersecurity company. They focus on Cybersecurity and Custom Software Development and were established in 2021.Read More
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