Top 100 Cybersecurity Companies in the United Kingdom
The Best of January 2026Looking 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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31$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.
Clients
RIOT GamesIndustries
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32$1,000+10 - 49 employeesLondon, EnglandTWC IT Solutions is an IT managed services company in London, England; Jersey City, New Jersey and Central, Hong Kong. The small team offers IT managed services, IT strategy consulting, cloud consulting & SI, unified communications consulting & SI, and more and was launched in 2011.Read More
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33$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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34$50,000+1,000 - 9,999 employeesPlano, TXRead More
IT strategy consulting and other IT consulting and SI company Black Box is headquartered in. The company provides IT strategy consulting and other IT consulting and SI and is large.The company was established in 1976.
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35$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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36$5,000+50 - 249 employeesScunthorpe, EnglandIT managed services company The HBP Group provides IT managed services and IT strategy consulting. They are in Scunthorpe, England and Peterborough, England.Read More
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R&G Fluid Power Group BetterYou Black Onyx Concepts GCH CorporationIndustries
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37$1,000+10 - 49 employeesEdinburgh, ScotlandRead More
Managed IT Experts Ltd. Is a small CRM consulting and SI company. The Edinburgh, United Kingdom-based company was established in 2005. Their services include CRM consulting and SI, IT managed services, cybersecurity, BI & big data consulting & SI, and more.
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38$25,000+1,000 - 9,999 employeesMilton, EnglandDarktrace is a Milton, England-based Cybersecurity company. Founded in 2013, the team provides Cybersecurity.Read More
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39$10,000+1,000 - 9,999 employeesBourne End, EnglandRead More
Pomeroy is an IT infrastructure solutions company based in Hebron, KY, with offices in Bourne End, UK, Pittsburgh, PA, and New York. Since it was founded in 1982, the team has grown to over 3,00 employees. Pomeroy provides IT managed services, non-voice BPO/back office services, and cybersecurity capabilities.
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40$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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41$1,000+10 - 49 employeesLondon, EnglandRead More
Helpdesk Heroes is an IT managed services company. The small London, United Kingdom-based agency was launched in 2016. Their team focuses on IT managed services, cybersecurity, other IT consulting and SI, and IT staff augmentation.
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42$1,000+10 - 49 employeesLondon, EnglandRead More
Teceze Ltd is a London-based IT company founded in 2012 with more than 10 employees. They are experts in IT strategy consulting, cybersecurity, and IT managed services for clients that work in the industries of business services, consumer products, and more.
Clients
Outsell, Inc.Industries
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43$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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44$1,000+2 - 9 employeesWembley, EnglandVUPAX Solutions Limited, an user experience design company, was founded in 2025. Their small team is based in Wembley, England. Their services include UX/UI Design, cloud consulting & SI, Cybersecurity, Custom Software Development, and more.Read More
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45$1,000+10 - 49 employeesLondon, EnglandRead More
SonicFast is a hosting solutions provider founded in 2015 in London and with about 5 employees on board. Their main services include cybersecurity, cloud consulting and systems integration, IT managed services, and business intelligence. They mostly cater to small businesses in telecommunications, IT, and gaming industries.
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46Undisclosed1,000 - 9,999 employeesHyderabad, IndiaRead More
ValueLabs is a global business technology services and solutions provider based in Hyderabad, India with over 25 offices worldwide in the US, Europe, and Asia. Founded in 1997, ValueLabs' team of over 5,000 employees provides non-voice BPO/back office services and voice/call center capabilities.
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47Undisclosed1,000 - 9,999 employeesLondon, EnglandRead More
BSI Group is an IT firm headquartered in London. Their midsized team specializes in cybersecurity, IT strategy consulting, and business consulting.
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48Undisclosed10 - 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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49Undisclosed10 - 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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50$1,000+10 - 49 employeesManchester, EnglandRead More
Apex Computing Services Ltd is an IT managed services company. Their small team is headquartered in Manchester, United Kingdom and Salford, United Kingdom. The company offers IT managed services, IT strategy consulting, cloud consulting & SI, and cybersecurity. The company was launched in 2003.
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51Undisclosed250 - 999 employeesNottingham, EnglandLittlefish Managed IT Services is an IT managed services company. Their midsize team is located in Nottingham, United Kingdom; Sheffield, United Kingdom and London, United Kingdom. The firm specializes in IT managed services, cybersecurity, cloud consulting & SI, and IT strategy consulting. The firm was established in 2003.Read More
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52$50,000+10 - 49 employeesLondon, EnglandFounded in 2023, Opstergo is a cloud consulting & SI company. The small Zagreb, Croatia-based team specializes in cloud consulting & SI, devops managed services, and cybersecurity.Read More
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53$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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54$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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55Undisclosed2 - 9 employeesNottingham, EnglandCybersecurity company Collective Security is based in Nottingham, England. Their services include Cybersecurity and other IT consulting and SI.Read More
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56$1,000+10 - 49 employeesLondon, EnglandRead More
Altahonos is a digital reputation company based in London with offices in San Francisco and Istanbul. The company, founded in 2017, has a team of more than ten that provides cybersecurity, branding, digital strategy, SEO, and IT strategy consulting services to various clients and companies.
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Jasper's Info TechIndustries
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57$1,000+10 - 49 employeesLondon, EnglandCyberSRC Consultancy LLP is a Cybersecurity company. The team provides Cybersecurity and Application Testing and is headquartered in Noida, India and London, England.Read More
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58$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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59$250,000+2 - 9 employeesLondon, EnglandSanRa is a Cybersecurity company established in 2022. The small team specializes in Cybersecurity.Read More
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60Undisclosed250 - 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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