Top 100 Cybersecurity Companies in London
The Best of October 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.
Jump to Most Reviewed Companies
List of the Best London Cybersecurity Consultants
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61$10,000+10 - 49 employeesLondon , EnglandTurgensec is a small Cybersecurity company headquartered in London , England. Their services include Cybersecurity.Read More
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62$1,000+10 - 49 employeesLondon, EnglandSectricity is a Cybersecurity company established in 2021. In Merelbeke-Melle, Belgium and London, England, the team specializes in Cybersecurity.Read More
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63Undisclosed2 - 9 employeesCity of London, EnglandCyPro, a Cybersecurity company, was established in 2021. Headquartered in City of London, England, the team focuses on Cybersecurity.Read More
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64Undisclosed2 - 9 employeesLondon, EnglandSES Escrow is a Cybersecurity company. The Handforth, England-based agency was founded in 2008. Their services include Cybersecurity.Read More
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65$1,000+2 - 9 employeesLondon, EnglandHeadquartered in London, England, Cynance is a Cybersecurity company. Established in 2019, the team specializes in Cybersecurity.Read More
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66$1,000+50 - 249 employeesLondon, EnglandSafetech Innovations Global Services LTD is a Cybersecurity company headquartered in London, England and Frederick, Maryland. Established in 2022, the team provides Cybersecurity.Read More
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67$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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68$5,000+10 - 49 employeesLondon, EnglandEstablished in 2021, Kloudwerk is a Cybersecurity company. The small team specializes in Cybersecurity.Read More
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69$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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70Undisclosed250 - 999 employeesLondon, EnglandHeadquartered in London, England, IntelligenceX is a Cybersecurity company. Established in 2025, the team offers Cybersecurity and cloud consulting & SI.Read More
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71$5,000+250 - 999 employeesLondon , EnglandSoitron is a Bratislava 25, Slovakia-based IT managed services company. The team provides IT managed services and IT staff augmentation.Read More
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72Undisclosed2 - 9 employeesLondon, EnglandCybersecurity company Cyber Legion was launched in 2021. Located in London, England, the team offers Cybersecurity and Application Testing.Read More
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73$5,000+250 - 999 employeesBorehamwood, EnglandRaygain Technologies is a cloud consulting & SI company. Located in Borehamwood, England and New Delhi, India, their team focuses on cloud consulting & SI and Cybersecurity.Read More
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74Undisclosed10 - 49 employeesLondon, EnglandGoAllSecure is a Cybersecurity company launched in 2022. The firm provides Cybersecurity and cloud consulting & SI.Read More
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75Undisclosed10 - 49 employeesLondon, EnglandSURFSecurity is a Cybersecurity company. They are headquartered in London, England and have small team. They offer Cybersecurity.Read More
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76Undisclosed2 - 9 employeesLondon, EnglandRockSec Group, a small Cybersecurity company, is located in London, England. Their services include Cybersecurity and cloud consulting & SI.Read More
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77$1,000+10 - 49 employeesLondon, EnglandSecore Information Security Ltd is a Cybersecurity company. The London, England-based agency was launched in 2023. Their team specializes in Cybersecurity.Read More
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78Undisclosed2 - 9 employeesLondon, EnglandFounded in 2020, Cyber Sense Limited is a Cybersecurity company. The team offers Cybersecurity and Application Testing.Read More
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79$10,000+10 - 49 employeesLondon, EnglandGlobal Protect Risk is a Cybersecurity company. Their team is in London, England and provides Cybersecurity.Read More
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80Undisclosed10 - 49 employeesLondon, EnglandBlack Smith Security, a small Cybersecurity company, is in London, England. Their services include Cybersecurity.Read More
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81$5,000+10 - 49 employeesLondon, EnglandEJN Labs, a Cybersecurity company, offer Cybersecurity and AI Consulting. They were founded in 2025.Read More
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82$5,000+10 - 49 employeesLondon, EnglandCybersecurity company REDSECLABS was established in 2023. Based in London, England, their small team specializes in Cybersecurity.Read More
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83Undisclosed250 - 999 employeesLondon, EnglandBased in London, England, Marshall Info Tech is a midsize IT managed services company. The team specializes in IT managed services and Cybersecurity.Read More
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84Undisclosed50 - 249 employeesLondon, EnglandIT managed services company TDM Group is in London, England and Staines-upon-Thames, England. The team offers IT managed services and Cybersecurity.Read More
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85Undisclosed10 - 49 employeesLondon, EnglandFounded in 2013, First Response is a Cybersecurity and IT managed services company. The team focuses on Cybersecurity and IT managed services.Read More
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86Undisclosed50 - 249 employeesLondon, EnglandTelana Limited is a midsize AI Agents company. Launched in 2003, the team focuses on AI Agents and AI Consulting.Read More
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87$5,000+50 - 249 employeesLondon, EnglandLightrove Technology is a midsize Cybersecurity company founded in 2020. Their services include Cybersecurity and IT staff augmentation.Read More
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88$50,000+2 - 9 employeesLondon, EnglandMonsevo, a Cybersecurity company, provide Cybersecurity. They were launched in 2023.Read More
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89$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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90$1,000+2 - 9 employeesLondon, EnglandCybersecurity company AttackIUM is in London, England. They provide Cybersecurity.Read More
Industries
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