Top 100 Cybersecurity Companies in London
The Best of February 2026Looking for a top cybersecurity consultant in London?
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 London. Browse descriptions, feedback, and awards to find which can best suit your company’s needs.
List of the Best London Cybersecurity Consultants
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61$50,000+2 - 9 employeesLondon, EnglandMonsevo, a Cybersecurity company, provide Cybersecurity. They were launched in 2023.Read More
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62$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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63$5,000+1,000 - 9,999 employeesLondon, EnglandSigma Software Security, a Compliance Consulting company, is in London, England and Warszawa, Poland. Their services include Compliance Consulting and Cybersecurity.Read More
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64$1,000+2 - 9 employeesLondon, EnglandCybersecurity company AttackIUM is in London, England. They provide Cybersecurity.Read More
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65$25,000+10 - 49 employeesLondon, EnglandSnatchDigital is an IT staff augmentation company. The team focuses on IT staff augmentation and Application Testing and is in London, England and San francisco, California.Read More
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66$10,000+10 - 49 employeesLondon, EnglandOTIFYD is a Cybersecurity company in London, England and Dubai, United Arab Emirates. They specialize in Cybersecurity and IT strategy consulting.Read More
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67$5,000+10 - 49 employeesLondon, EnglandLaunched in 1999, Lucidica is an IT managed services company. The agency offers IT managed services and Cybersecurity.Read More
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68Undisclosed50 - 249 employeesLondon, EnglandStripe OLT is a Cybersecurity company. The company is in Bristol, England and London, England. Their team provides Cybersecurity and IT managed services.Read More
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69$1,000+10 - 49 employeesBeckenham, EnglandGregory Micallef Associates is an IT managed services company. They offer IT managed services and Call Center Services and were launched in 1992.Read More
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70$1,000+2 - 9 employeesLondon, EnglandPxosys Ltd is a Cybersecurity company. The London, England-based firm focuses on Cybersecurity and cloud consulting & SI.Read More
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71$10,000+1,000 - 9,999 employeesLondon, EnglandTelefónica Tech (EN) is a Cybersecurity company. They are in London, England, and their services include Cybersecurity and IT managed services.Read More
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72Undisclosed10 - 49 employeesLondon, EnglandEstablished in 2021, KOBU SMART LTD is a small London, England-based cloud consulting & SI company. Their team specializes in cloud consulting & SI and Cybersecurity.Read More
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73$5,000+1,000 - 9,999 employeesLondon, EnglandEmagine is an IT managed services company established in 2001. The firm offers IT managed services and IT staff augmentation.Read More
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74Undisclosed10 - 49 employeesLondon, EnglandLaunched in 2017, Hazy is a small big data company. Their services include BI & big data consulting & SI and Artificial Intelligence.Read More
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75Undisclosed250 - 999 employeesLondon, EnglandAdventus is a midsize IT strategy consulting company launched in 2005. Their services include IT strategy consulting and cloud consulting & SI.Read More
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76Undisclosed10 - 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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77$1,000+10 - 49 employeesLondon, EnglandMacnitech is a cloud consulting & SI company. The company is located in London, England. Their services include cloud consulting & SI and Cybersecurity.Read More
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78$5,000+10 - 49 employeesLondon, EnglandLaunched in 2002, zsah Limited is a cloud consulting & SI company. The team offers cloud consulting & SI and BI & big data consulting & SI.Read More
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79$5,000+10 - 49 employeesLeatherhead, EnglandComputer Care is a small Leatherhead, England-based IT strategy consulting company. Their services include IT strategy consulting and cloud consulting & SI.Read More
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80Undisclosed50 - 249 employeesStaines-upon-Thames, EnglandTDM Group is an IT managed services company. The Staines-upon-Thames, England-based agency was launched in 1997. Their team provides IT managed services and Cybersecurity.Read More
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81$1,000+10 - 49 employeesFitzrovia, London, 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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82$1,000+10 - 49 employeesLondon, EnglandDr Logic is an IT managed services company. They are located in London, England and have small team. They specialize in IT managed services and Cybersecurity.Read More
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83$1,000+2 - 9 employeesLondon, EnglandCybersecurity company Custodia Cyber is headquartered in London, England. The team provides Cybersecurity and IT managed services.Read More
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84Undisclosed50 - 249 employeesLondon, EnglandIT managed services company ITVET is located in Bishop's Stortford, England and London, England. Launched in 2007, the team offers IT managed services and IT strategy consulting.Read More
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85Undisclosed2 - 9 employeesLondon, EnglandStreym Ltd is an IT strategy consulting company headquartered in London, England. They offer IT strategy consulting and Cybersecurity and were founded in 2006.Read More
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86$1,000+10 - 49 employeesLondon, EnglandIG-Smart Ltd is a Cybersecurity company. Their team is located in London, England. The company specializes in Cybersecurity and IT managed services.Read More
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87$5,000+50 - 249 employeesLondon, EnglandOryxAlign is a midsize IT strategy consulting company. They provide IT strategy consulting and cloud consulting & SI and were founded in 2006.Read More
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88Undisclosed2 - 9 employeesLondon, EnglandNetworkIQ, an IT strategy consulting company, was established in 2009. The team focuses on IT strategy consulting and Cybersecurity and is in London, England.Read More
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89Undisclosed250 - 999 employeesLondon, EnglandSharp Business Systems UK Plc is an IT managed services company. The East Ardsley, England-based agency was established in 1964. Their services include IT managed services and Cybersecurity.Read More
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90$250,000+50 - 249 employeesShadwell, EnglandSpeedster IT, an IT strategy consulting company, was founded in 2014. The team offers IT strategy consulting and cloud consulting & SI.Read More
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