Top 100 Cybersecurity Companies in the United Kingdom
The Best of July 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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61$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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62Undisclosed1,000 - 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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63$5,000+50 - 249 employeesLondon, EnglandCovertSwarm is a Cybersecurity company based in London, England and Wilmington, Delaware. Founded in 2020, the team provides Cybersecurity.Read More
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64Undisclosed10 - 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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65$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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66$10,000+10 - 49 employeesLondon, EnglandT3 is an AI Consulting company founded in 2023. The small London, England-based team specializes in AI Consulting, Artificial Intelligence, Generative AI, AI Agents, and more.Read More
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67Undisclosed10 - 49 employeesLondon, EnglandSereno IT Support, a Cybersecurity company, is headquartered in London, England and London, England. Their services include Cybersecurity and IT managed services.Read More
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68Undisclosed250 - 999 employeesNottingham, EnglandLittlefish Group is an IT managed services company. Their midsize team is located in Nottingham, England; Sheffield, England and London, England. The company specializes in IT managed services, Cybersecurity, IT strategy consulting, and cloud consulting & SI.Read More
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69$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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70$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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71$1,000+10 - 49 employeesBishop's Stortford, EnglandRead More
Genmar (UK) Ltd is a small IT managed services company. Founded in 1996, the agency is located in Bishop's Stortford, United Kingdom. Their team focuses on IT managed services, voice services, cloud consulting & SI, cybersecurity, and more.
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72Undisclosed2 - 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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73$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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74$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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75$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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76Undisclosed2 - 9 employeesBirmingham, EnglandPaul Reynolds is a Cybersecurity company. The small Birmingham, England-based team specializes in Cybersecurity. The company was launched in 2025.Read More
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77Undisclosed250 - 999 employeesLondon, EnglandFounded in 1986, Online Business Systems is a Cybersecurity company. The team specializes in Cybersecurity and IT strategy consulting.Read More
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78$10,000+50 - 249 employeesDunstable, EnglandCyberGlobal is a Cybersecurity company. The Dunstable, England-based company was launched in 2017. Their team provides Cybersecurity and AI Consulting.Read More
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79Undisclosed250 - 999 employeesLondon, EnglandProfessional Advantage is a midsize ERP consulting and SI company in North Sydney, Australia and Melbourne, Australia. Their services include ERP consulting and SI and cloud consulting & SI.Read More
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80$10,000+50 - 249 employeesStanmore, EnglandMicromindercs is a Cybersecurity company. Launched in 2018, the team focuses on Cybersecurity and IT managed services.Read More
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81$1,000+10 - 49 employeesBasingstoke, EnglandCybersecurity company Censornet was founded in 2005. Based in Basingstoke, England and Brøndby, Denmark, the team focuses on Cybersecurity.Read More
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82Undisclosed50 - 249 employeesLondon, EnglandCyberOne, a Cybersecurity company, was founded in 2005. The company specializes in Cybersecurity and IT managed services, and is midsize.Read More
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83Undisclosed250 - 999 employeesBirmingham, EnglandIT strategy consulting company Air IT Group was established in 2005. The team provides IT strategy consulting and cloud consulting & SI.Read More
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84$1,000+50 - 249 employeesLondon, EnglandMidsize Cybersecurity company Clear Infosec, is based in Jersey City, New Jersey and Toronto, Canada. The team focuses on Cybersecurity and IT strategy consulting.Read More
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85Undisclosed250 - 999 employeesLondon, EnglandRedscan is a Cybersecurity company founded in 2015. Their team offers Cybersecurity.Read More
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86$1,000+2 - 9 employeesLondon, EnglandForensic Control, a Cybersecurity company, was launched in 2008. The team provides Cybersecurity and Litigation Support Services.Read More
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87$25,000+10 - 49 employeesLondon, EnglandEstablished in 2019, DigiTaiken, a small Product Design company, is headquartered in London, England and Bengaluru, India. Their services include Product Design and Cybersecurity.Read More
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88$250,000+10,000+ employeesLondon, EnglandSpetsnaz Security International Limited is a Business Consulting company. The team is based in London, England, and their services include Business Consulting and Building Security Services.Read More
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89Undisclosed10 - 49 employeesRoyal Leamington Spa, EnglandHacker On Rent is a Cybersecurity company. They were established in 2018, and their services include Cybersecurity.Read More
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90Undisclosed10 - 49 employeesWhitchurch, EnglandInfosec Partners is a Whitchurch, England-based Cybersecurity company. Their services include Cybersecurity.Read More
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