All Rankings
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.
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