Top 30 Managed SIEM Providers in the United Kingdom
The Best of December 2025Looking for a top managed SIEM service in the United Kingdom?
Managed SIEM providers are essential partners for businesses seeking to outsource their SIEM capabilities and enhance their security operations. By collaborating with managed SIEM providers, businesses can offload the burden of SIEM management, gain access to expert security resources, and strengthen their defenses against cyber threats.
To assist you in your search for a partner, we’ve compiled this list of the top managed SIEM services in United Kingdom. Browse descriptions, feedback, and awards to find which can best suit your company’s needs.
List of the Best United Kingdom SIEM Managed Service Providers
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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$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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3$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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4Undisclosed10 - 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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5Undisclosed250 - 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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6$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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7Undisclosed250 - 999 employeesLondon, EnglandRedscan is a Cybersecurity company founded in 2015. Their team offers Cybersecurity.Read More
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8$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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9Undisclosed50 - 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
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The Met OfficeIndustries
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10Undisclosed10 - 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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11$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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12$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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13Undisclosed10 - 49 employeesBrighton, EnglandIngenio Technologies is an IT managed services company. The Brighton, England-based agency specializes in IT managed services and IT strategy consulting.Read More
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14$5,000+50 - 249 employeesPortishead, EnglandIT strategy consulting company Chorus was established in 1999. The team focuses on IT strategy consulting and Cybersecurity.Read More
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15$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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16Undisclosed50 - 249 employeesEly, EnglandGRC Solutions is an IT strategy consulting company headquartered in Ely, England. They specialize in IT strategy consulting and Cybersecurity.Read More
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17$5,000+250 - 999 employeesCardiff, WalesEstablished in 1995, ARO is an IT managed services company. The company specializes in IT managed services and unified communications consulting & SI, and is midsize.Read More
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18$5,000+50 - 249 employeesGuildford, EnglandRamsac is an IT strategy consulting company. Headquartered in Guildford, England, the firm was founded in 1992. Their team offers IT strategy consulting and cloud consulting & SI.Read More
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19$50,000+10 - 49 employeesBrentford, EnglandFindErnest is a web design company. The firm is based in Hyderabad, India and Brentford, England. Their services include Web Design and UX/UI Design.Read More
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20Undisclosed10 - 49 employeesWalton-on-Thames, EnglandET Works is an IT strategy consulting company based in Walton-on-Thames, England and Hokksund, Norway. Their services include IT strategy consulting and cloud consulting & SI.Read More
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21Undisclosed250 - 999 employeesVerdant, ScotlandQuorum Cyber is a midsize Tampa, Florida-based Cybersecurity company. Their services include Cybersecurity.Read More
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22$1,000+10 - 49 employeesStoke Gifford, EnglandCybersecurity company CloudBound Systems was launched in 2023. The agency focuses on Cybersecurity and IT managed services.Read More
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23$1,000+10 - 49 employeesLeeds, EnglandLaunched in 2011, Sycom Integrated Solutions LTD is a small Leeds, England-based IT strategy consulting company. Their services include IT strategy consulting and cloud consulting & SI.Read More
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24Undisclosed2 - 9 employeesLeigh, EnglandExpress IT is a small IT strategy consulting company. Founded in 2011, the team provides IT strategy consulting and cloud consulting & SI.Read More
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25Undisclosed10 - 49 employeesBromsgrove, EnglandIT strategy consulting company Technical Drive specializes in IT strategy consulting and cloud consulting & SI. They were established in 2008.Read More
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26Undisclosed250 - 999 employeesLondon, EnglandIntegrity360 is a Cybersecurity company. The Dublin 18, Ireland-based firm was founded in 2005. Their team provides Cybersecurity and IT managed services.Read More
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27$5,000+10 - 49 employeesLondon, EnglandExact Solutions is a London, England-based IT managed services company. Their services include IT managed services and cloud consulting & SI.Read More
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28$1,000+Freelancer employeesNewcastle upon Tyne, EnglandEstablished in 2023, Boxwire Technology Solutions is a small IT managed services company in Newcastle upon Tyne, England. Their team provides IT managed services and IT strategy consulting.Read More
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29Undisclosed10 - 49 employeesManchester, EnglandHedgehog Security is a Cybersecurity company. The firm is in Manchester, England. Their services include Cybersecurity.Read More
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30Undisclosed2 - 9 employeesLondon, EnglandMesoform Limited is an IT strategy consulting company headquartered in London, England. They focus on IT strategy consulting and cloud consulting & SI and were launched in 2016.Read More
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