Top 100 Cybersecurity Companies in the United Kingdom
The Best of December 2025Looking for a top cybersecurity consultant in the United Kingdom?
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 United Kingdom. Browse descriptions, feedback, and awards to find which can best suit your company’s needs.
List of the Best United Kingdom Cybersecurity Consultants
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1Undisclosed50 - 249 employeesFarnborough, EnglandRead More
Midsize Cybersecurity company Foresite Cybersecurity, is located in Overland Park, Kansas and Farnborough, England. Established in 2013, the team provides Cybersecurity, Compliance Consulting, cloud consulting & SI, and IT managed services.
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2$1,000+10 - 49 employeesHildenborough, EnglandRSK Cyber Security is a Cybersecurity company launched in 2021. The small Hildenborough, England-based team specializes in Cybersecurity, Application Testing, and cloud consulting & SI.Read More
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3$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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4$5,000+50 - 249 employeesLondon, EnglandLocated in London, England and Düsseldorf, Germany, Transputec Ltd is a Cybersecurity company. The midsize agency was launched in 1986. Their services include Cybersecurity, IT managed services, Artificial Intelligence, cloud consulting & SI, and more.Read More
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5$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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6$25,000+50 - 249 employeesSalford, EnglandIn Salford, England; London, England and Houston, Texas, Digiryte is a cloud consulting & SI company. They focus on cloud consulting & SI, Mobile App Development, Custom Software Development, Digital Strategy, and more and were founded in 2016.Read More
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NHSIndustries
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7$5,000+10 - 49 employeesEdinburgh, ScotlandLaunched in 2012, Texaport is an IT managed services company. The small team provides IT managed services, Cybersecurity, cloud consulting & SI, IT strategy consulting, and more. The firm is headquartered in Edinburgh, Scotland; Glasgow, Scotland; London, England and Manchester, England.Read More
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8Undisclosed50 - 249 employeesLondon, EnglandBreachLock Inc is an Application Testing company. Launched in 2019, the midsize agency is based in New York, New York; Amsterdam, Netherlands and London, England. Their team offers Application Testing, Cybersecurity, and DevOps Managed Services.Read More
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9$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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10$5,000+1,000 - 9,999 employeesBelrose, AustraliaRead More
ERRNA is a blockchain company founded in 2015. The small San Jose, California-based team provides blockchain, cybersecurity, marketing strategy, mobile app development, and more.
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11$1,000+10 - 49 employeesBradford on Avon, EnglandRead More
Established in 1999, Systemagic Ltd is an IT managed services company. The firm offers IT managed services, cloud consulting & SI, cybersecurity, and IT strategy consulting and has a small team. The firm is located in Bradford on Avon, United Kingdom and London, United Kingdom.
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12$10,000+250 - 999 employeesLondon, EnglandRead More
A1QA logo is a quality assurance and software testing company founded in 2002. Based in Denver, they have a team of 200+ employees that specialize in application testing and cybersecurity. They primarily serve midmarket clients in the IT and telecommunications industries.
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AdidasIndustries
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13$5,000+10 - 49 employeesClayton-le-Woods, EnglandHeadquartered in Clayton-le-Woods, England, FluidOne - Chorley is an IT managed services company. Founded in 2001, the small team offers IT managed services, IT strategy consulting, and Cybersecurity.Read More
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14$1,000+50 - 249 employeesColden Common, EnglandEvalian, a Cybersecurity company, is in Colden Common, England; London, England and Worcester, England. The midsize team specializes in Cybersecurity and was founded in 2017.Read More
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AlliantsIndustries
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15$50,000+1,000 - 9,999 employeesLisboa, PortugalIntellias is a custom software development company established in 2002. Located in Kraków, Poland; L'viv, Ukraine; Chicago, Illinois and Málaga, Spain, their large team specializes in Custom Software Development, Generative AI, BI & big data consulting & SI, Cybersecurity, and more.Read More
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HERE TechnologiesIndustries
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16$50,000+1,000 - 9,999 employeesLeeds, EnglandRead More
Headquartered in Leeds, United Kingdom, BJSS is an IT consultancy with offices in London, New York, and Bristol and Manchester, U.K. Since 1993, their team of 750+ has specialized in custom software development, application testing, IT strategy consulting, and more for enterprise-level and midmarket clients.
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EuroclearIndustries
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17Undisclosed10 - 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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Monzo -
18$25,000+50 - 249 employeesLondon, EnglandRead More
Esynergy is a big data analytics company. They are headquartered in London, United Kingdom and have a midsize team. Their services include BI & big data consulting & SI, cloud consulting & SI, custom software development, mobile app development, and more.
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19Undisclosed50 - 249 employeesLondon, EnglandRead More
Sagiton is a business-oriented software house located in Wroclaw, Poland. The company was founded in 2010 and now employs a team of 48 people. Sagiton provides custom software development, cybersecurity, mobile app development, IT strategy consulting, marketing strategy, and web design services. Most of their clients are small businesses.
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TapWinWinIndustries
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20$50,000+50 - 249 employeesLondon, EnglandRead More
Vodworks is a London, United Kingdom-based data analytics company. They offer BI & big data consulting & SI, custom software development, broadcast video, IT strategy consulting, and more and were launched in 2011.
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21$1,000+10 - 49 employeesLondon, EnglandRead More
Smartdesc is a London-based IT company with a team of fewer than 50 people. Founded in 2011, they offer IT strategy consulting, cloud consulting, and cybersecurity solutions for small and mid-market businesses, primarily non-profit organizations.
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MindIndustries
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22$1,000+10 - 49 employeesLondon, EnglandArticle Ten, a graphic design agency, was established in 2008. The firm specializes in Graphic Design, Cybersecurity, Video Production, Branding, and more and has a small team. The firm is headquartered in London, England.Read More
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23$1,000+2 - 9 employeesMiddlesbrough, EnglandNorth IT is a Middlesbrough, United Kingdom-based cybersecurity company. The small agency was launched in 2012. Their team specializes in cybersecurity.Read More
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24$1,000+10 - 49 employeesLIVERPOOL, EnglandLaskon Technologies, a Cybersecurity company, was founded in 2020. The firm provides Cybersecurity, Custom Software Development, Artificial Intelligence, Business Consulting, and more and has a small team.Read More
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25$5,000+10 - 49 employeesSheffield, EnglandRead More
PAV I.T. Services is an IT company in Leeds and Burgess Hill, England. Founded in 1988, they have about 33 employees that serve mostly small-business and midmarket clients in the automotive, legal, and financial sectors. Services include IT managed services, cloud consulting, and IT strategy consulting.
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Stevensdrake solicitorsIndustries
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26$25,000+2 - 9 employeesFinchampstead, EnglandRead More
Melmac Solutions Limited is a cybersecurity company. Launched in 1995, the small agency is located in Finchampstead, United Kingdom. Their services include cybersecurity, blockchain, and financial advising & planning.
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27$5,000+250 - 999 employeesManchester, EnglandAress Software is an IT strategy consulting company. Their midsize team is in Nashik, India; Manchester, England; Woburn, Massachusetts and Pune, India and provides IT strategy consulting, cloud consulting & SI, CRM consulting and SI, Cybersecurity, and more. The agency was founded in 1999.Read More
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28$5,000+10 - 49 employeesBillericay, EnglandClear Thinking IT Solutions is an IT managed services company. Launched in 2009, the small firm is headquartered in Billericay, England; Tower Bridge Rd, England; Basildon, England and City of London, England. Their team focuses on IT managed services, Cybersecurity, and IT strategy consulting.Read More
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29$100,000+50 - 249 employeesرأس الخيمة, United Arab EmiratesFounded in 2007, SN SKIES PRIVATE LIMITED is a midsize IT managed services company. Their services include IT managed services, cybersecurity, IT strategy consulting, custom software development, and more. The agency is located in Islamabad, Pakistan; رأس الخيمة, United Arab Emirates; Abbeymead, United Kingdom and Lahore, Pakistan.Read More
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30$10,000+2 - 9 employeesFarnborough, EnglandRead More
ACUMED Consulting Ltd is a data science and business analytics consultancy based in Hook, U.K. The consultancy, founded in 2010, has a team of less than ten that provides BI & big data consulting & SI, cybersecurity, AI, business consulting, and other application development services. ACUMED Consulting serves small and mid-market companies in various industries that include gaming, advertising & marketing, and health care & medical.
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RIOT GamesIndustries
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