Top 100 Network Security Companies in the United Kingdom
The Best of December 2025Looking for a top network security firm in the United Kingdom?
Network security is critical for businesses. Protecting sensitive data and preserving trust are top priorities. Network security companies offer services like threat detection, encryption, assessments, and incident response planning. By partnering with these experts, businesses can fortify their defenses and maintain their reputation in the face of evolving cyber threats.
To assist you in your search for a partner, we’ve compiled this list of the top network security service providers in United Kingdom. Browse descriptions, feedback, and awards to find which can best suit your company’s needs.
List of the Best United Kingdom Network Security Providers
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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.
Clients
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$5,000+50 - 249 employeesScunthorpe, EnglandThe HBP Group is a midsize IT managed services company based in Scunthorpe, England and Peterborough, England. The team offers IT managed services and IT strategy consulting.Read More
Clients
R&G Fluid Power Group BetterYou Black Onyx Concepts GCH CorporationIndustries
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8$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
Clients
IGN Entertainment - Ziff DavisIndustries
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9$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
Industries
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10$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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11$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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12Undisclosed10 - 49 employeesBarlborough, EnglandAAG is an IT managed services company. Their small team is in Barlborough, United Kingdom and Sheffield, United Kingdom and focuses on IT managed services, IT strategy consulting, and cybersecurity. The firm was established in 2009.Read More
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13$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
Industries
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14$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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15Undisclosed10 - 49 employeesHarrogate, EnglandData Connect Group is a Cybersecurity company. Their small team is located in Harrogate, England. Their services include Cybersecurity.Read More
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16$25,000+10 - 49 employeesSaltire Centre, ScotlandEmber is a small mobile application development company founded in 2016. Their services include Mobile App Development and API Development.Read More
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17$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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18Undisclosed250 - 999 employeesLondon, EnglandRedscan is a Cybersecurity company founded in 2015. Their team offers Cybersecurity.Read More
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19$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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20Undisclosed250 - 999 employeesRoyal Leamington Spa, EnglandLRQA Nettitude is a Cybersecurity company. The New York, New York-based company specializes in Cybersecurity and IT managed services.Read More
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21$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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22$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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23Undisclosed10 - 49 employeesCamberley, EnglandPR agency Riven Associates was founded in 2003. The agency focuses on Public Relations and CRM consulting and SI, and is small.Read More
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24Undisclosed50 - 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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25$5,000+50 - 249 employeesLondon, EnglandCybersecurity company Cybernoq LTD is headquartered in London, England. Their services include Cybersecurity and IT managed services.Read More
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26Undisclosed50 - 249 employeesExeter, EnglandNexus Open Systems Ltd is a midsize IT strategy consulting company. They offer IT strategy consulting and cloud consulting & SI and were launched in 1998.Read More
Clients
The Met OfficeIndustries
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27$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
Clients
SonyIndustries
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28$1,000+10 - 49 employeesFrome, EnglandNETITUDE is an IT managed services company established in 2001. In Frome, England and Bristol, England, the team offers IT managed services and IT strategy consulting.Read More
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29$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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30Undisclosed10 - 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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