Top 70 Application Security Companies in the United Kingdom
The Best of December 2025Looking for a top application security company in the United Kingdom?
With their in-depth knowledge of application security principles, penetration testing techniques, and security compliance standards, application security services help businesses identify and address security vulnerabilities before malicious actors exploit them. By collaborating with application security professionals, companies can enhance the resilience of their software infrastructure, build trust with their customers, and maintain a strong security posture in today's digital age.
To assist you in your search for a partner, we’ve compiled this list of the top application security vendors in United Kingdom. Browse descriptions, feedback, and awards to find which can best suit your company’s needs.
List of the Best United Kingdom Application Security Services
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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$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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3Undisclosed50 - 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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4$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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5$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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6$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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7$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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8$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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9$1,000+50 - 249 employeesLondon, EnglandWQsoftwares, a Marketing Strategy company, was established in 2014. The midsize team provides Marketing Strategy and cloud consulting & SI.Read More
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10$10,000+10 - 49 employeesLeeds, EnglandRead More
Founded in 2010, NewRedo Ltd. is a software development company headquartered in Leeds, England. Their team of under 10 serves businesses of all sizes in industries such as healthcare, financial services, and government. Services include custom software development, IT managed services, and mobile app development.
Clients
RaceBestIndustries
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11$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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12$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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13$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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14Undisclosed250 - 999 employeesLondon, EnglandRedscan is a Cybersecurity company founded in 2015. Their team offers Cybersecurity.Read More
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15$1,000+250 - 999 employeesLondon, EnglandZenith Business Solutions is a Digital Strategy company. They are based in Al Kuwayt, Kuwait and Hyderabad, India. Their team offers Digital Strategy and IT strategy consulting.Read More
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16$1,000+10 - 49 employeesLondon, EnglandSectricity is a Cybersecurity company established in 2021. In Merelbeke-Melle, Belgium and London, England, the team specializes in Cybersecurity.Read More
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17$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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18$5,000+10 - 49 employeesLondon, EnglandEstablished in 2020, Securityium is a Cybersecurity company. The team offers Cybersecurity and IT strategy consulting.Read More
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19Undisclosed50 - 249 employeesNewcastle upon Tyne, EnglandCybit is a Cybersecurity company launched in 1991. Located in Newcastle upon Tyne, England and Thatcham, England, the team specializes in Cybersecurity and IT managed services.Read More
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20$50,000+2 - 9 employeesLondon, EnglandMonsevo, a Cybersecurity company, provide Cybersecurity. They were launched in 2023.Read More
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21Undisclosed10 - 49 employeesManchester, EnglandNetMonkeys Ltd is a small IT managed services company established in 2003. Their services include IT managed services and Cybersecurity.Read More
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22$1,000+50 - 249 employeesGloucester, EnglandCloud9 Data Solutions is a Cybersecurity company. Launched in 2018, the company specializes in Cybersecurity and Compliance Consulting.Read More
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SonyIndustries
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23$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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24$1,000+2 - 9 employeesAltrincham, EnglandCyphere is a small Application Testing company. Launched in 2020, the team focuses on Application Testing and Cybersecurity.Read More
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25$1,000+10 - 49 employeesOxford, 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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26Undisclosed50 - 249 employeesLondon , EnglandPenguin Commercial Limited, a Corporate Travel Management company, is located in London , England. The team focuses on Corporate Travel Management and IT managed services.Read More
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27$1,000+2 - 9 employeesAnlaby, EnglandHeadquartered in Anlaby, England, Pera Prometheus Consulting Ltd is a Cybersecurity and Business Continuity Management company. The team offers Cybersecurity and Business Continuity Management.Read More
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28$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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29$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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30$1,000+10 - 49 employeesManchester, EnglandHavilah Blockchain Studios is a Blockchain company. Located in Awka, Nigeria, their small team specializes in Blockchain and Branding. The agency was established in 2022.Read More
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