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Top Cybersecurity Startups in the UK 2026

Private cybersecurity companies headquartered in the United Kingdom, ranked by disclosed lifetime funding, with links to company profiles and funding histories.

Known total funding for 72 of 100 ranked companies: $2.4B.

Showing top 100 matching companies · Ranked by total funding raised · Last updated

Methodology: up to 100 active companies matching this list's filters are ordered by disclosed total funding in USD. Companies whose latest round is one of: Grant, Private Equity, Debt Financing are excluded. Totals include recorded grants and other qualifying funding, not just equity. Open a company profile for its funding summary and available detail. How this data is built.

76
AquilaX

AI-driven application security platform offering security scanners across the DevSecOps lifecycle...

London, United KingdomCybersecurity, Generative AI
Funding undisclosed
77
Arbor Steel

Digital identity security platform providing digital identity citadel for individuals and companies.

United KingdomCybersecurity, SaaS
Funding undisclosed
78
B-Secur

B2B medical software company that develops clinically validated ECG biosensing algorithms for hea...

Belfast, United KingdomBiotech, Cybersecurity
Funding undisclosed
79
Barac

Instant threat detection on Encrypted Traffic without decryption using Metadata & Artificial Inte...

London, United Kingdom1–10Artificial Intelligence, Cybersecurity
SeedDec 2018
80
BeGOOD Solutions
London, United KingdomArtificial Intelligence, Cloud
Funding undisclosed
81
BlockFrauds

Private blockchain-enhanced fraud detection for the insurance industry

London, United Kingdom1–10Cybersecurity, Fintech
Funding undisclosed
82
Catellus

Health data sovereignty company building systems that give individuals control over their persona...

United Kingdom1–10Cybersecurity, Healthcare
Funding undisclosed
83
CFC Underwriting

Financial Services (UK, 2017)

London, United Kingdom1001–5000Cybersecurity, Fintech
Funding undisclosed
84
Cloudseals
London, United KingdomArtificial Intelligence, Cloud
Funding undisclosed
85
Crypta Labs

Crypta Labs is a UK company in the quantum-safe communications market that supplies QRNG products...

London, United Kingdom1–10Cybersecurity, IoT
Series AJul 2019
86
Cryptoquantique

Combining quantum technologies with the best of modern cryptography

London, United Kingdom11–50Cybersecurity, IoT
Funding undisclosed
87
Cydome
London, United Kingdom11–50Compliance, Cybersecurity
Funding undisclosed
88
Drone Defence
United KingdomAerospace, Artificial Intelligence
Funding undisclosed
89
e2e-assure
United KingdomCybersecurity
Funding undisclosed
90
EA Global AI

EthicsGrade is a SaaS platform for rating your supplier's ESG risks. We focus on ESG risks of dig...

St Briavels, United Kingdom1–10Artificial Intelligence, Climate Tech
Venture RoundJan 2022
91
EA-RS Group
Witham, United Kingdom501–1000Compliance, Cybersecurity
Funding undisclosed
92
Ensygnia
Reading, United Kingdom11–50CRM, Cloud
Funding undisclosed
93
ESProfiler

Security investment validation platform with real-time capability view

Manchester, United Kingdom11–50Cybersecurity, SaaS
Funding undisclosed
94
eXate
London, United KingdomCybersecurity
Funding undisclosed
95
Exonar
Reading, United Kingdom11–50Cybersecurity
Funding undisclosed
96
Fieldway Group

UK-based specialist provider of fire safety and compliance services.

Liverpool, United KingdomCompliance, Cybersecurity
Funding undisclosed
97
Galaxkey

Galaxkey is a UK-headquartered data protection platform that helps enterprises secure email, file...

St. Albans, United Kingdom51–200Cybersecurity, Productivity
Funding undisclosed
98
Glasswall
London, United Kingdom51–200Compliance, Cybersecurity
Funding undisclosed
99
Global Screening Services
London, United Kingdom51–200Compliance, Cybersecurity
Funding undisclosed
100
Goldilock
London, United Kingdom11–50Cybersecurity, Identity
Funding undisclosed

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