Best Cybersecurity Companies in London, United Kingdom
The 532 best Cybersecurity companies in London, United Kingdom in 2026, ranked by funding and momentum. Funding, investors, founders, valuation, tech stack and live signals. Top: Quantexa.
Our analysis of 53 Cybersecurity companies
$3.0b in tracked funding; 98% of the stack-profiled cohort runs cloud-native; funding activity peaked in 2024.
Ranked: Best Cybersecurity companies in London
| # | Company | Disclosed funding | Last round | Employees | Founded | Tech stack | Web popularity | Patents & IP focus | Recent signals |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Quantexa 🦄 Developer of decision intelligence software for data analysis and management 78AI top 25%Funding top 26%Tech top 28%News top 28% All 14 signals ▾AItop 25% Fundingtop 26% Techtop 28% Newstop 28% Moattop 28% Growthtop 30% Producttop 30% Talenttop 31% Innovationtop 36% Patentstop 36% Markettop 40% Globaltop 40% Partnersbottom 35% Fin. healthbottom 29% AI: Classified as an AI company · Holds AI/ML patents (G06N-family CPC) Funding: Raised $371M across 6 rounds · 6 rounds over 9 yrs (0.7/yr) rank vs industry peers · Fliar Intelligence Index 78/100 | $371M | 15 mo ago | 552 552 → 893 (+62%) · sector median +30% | 2016 | StoryblokApple iCloud MailMicrosoft 365+30 | Top 5M | 7 patents Graph-based AI for taxonomy induction and knowledge‑graph perspective generation | 1 partnership · 3 awards |
| 2 | Mimecast Provider of email security and human risk management software platforms 87Tech top 19%Market top 20%Partners top 25%Patents top 26% All 15 signals ▾Techtop 19% Markettop 20% Partnerstop 25% Patentstop 26% Fin. healthtop 27% Fundingtop 28% Globaltop 29% Moattop 30% Talenttop 34% Innovationtop 40% Producttop 40% Newstop 41% AItop 45% Growthtop 49% Customersbottom 49% Tech: 69 technologies across 7/8 capability areas · Cloud: Amazon Cloudfront, Amazon S3 Market: 79,693 employees (top 1% of Cybersecurity) · Revenue ~$315M rank vs industry peers · Fliar Intelligence Index 87/100 | $261M | 45 mo ago | 79,693 | 2003 | SitecoreMicrosoft ASP.NETAzure Front Door+29 | Top 500k | 60 patents Email security: phishing, domain impersonation detection, threat analysis, and header data encoding | — |
| 3 | Onfido Provider of identity verification and digital security authentication software solutions 84AI top 15%Tech top 23%Patents top 23%Innovation top 27% All 14 signals ▾AItop 15% Techtop 23% Patentstop 23% Innovationtop 27% Markettop 29% Fundingtop 30% Moattop 32% Fin. healthtop 33% Producttop 40% Talenttop 41% Globaltop 42% Customerstop 47% Growthbottom 47% Newsbottom 36% AI: Holds AI/ML patents (G06N-family CPC) Tech: 50 technologies across 6/8 capability areas · Cloud: Amazon Cloudfront, Amazon S3 rank vs industry peers · Fliar Intelligence Index 84/100 | $242M | 69 mo ago | 516 | 2012 | Node.jsReactNext.js App Router+21 | Top 5M | 66 patents Biometric identity verification and document authentication with fraud and anomaly detection | — |
| 4 | Yoti Provider of digital identity verification and automated age assurance technology 62Tech top 20%AI top 20%Customers top 25%Moat top 28% All 14 signals ▾Techtop 20% AItop 20% Customerstop 25% Moattop 28% Talenttop 28% Fundingtop 40% Innovationtop 44% Newstop 44% Growthtop 45% Producttop 49% Patentstop 50% Marketbottom 48% Globalbottom 48% Fin. healthbottom 14% Tech: 57 technologies across 6/8 capability areas · Cloud: Amazon Cloudfront, Amazon S3 AI: Classified as an AI company rank vs industry peers · Fliar Intelligence Index 62/100 | $210M | 29 mo ago | 318 318 → 457 (+44%) · sector median +30% | 2014 | WordPressApple iCloud MailGoogle Workspace+24 | Top 500k | 26 patents Secure digital identity verification and biometric liveness detection for authentication | 1 award |
| 5 | Privitar Provider of cloud data management software for enterprise information integration | $174M | 74 mo ago | 147 | 2015 | — | — | 39 patents Privacy-preserving data watermarking, tokenization, and anonymized dataset release technologies. | — |
| 6 | Behavox Provider of AI-driven platform for regulatory compliance and risk management 74Partners top 19%Talent top 22%Funding top 29%Fin. health top 30% All 14 signals ▾Partnerstop 19% Talenttop 22% Fundingtop 29% Fin. healthtop 30% Newstop 33% Growthtop 35% Moattop 35% Producttop 39% Markettop 40% AItop 45% Techtop 48% Innovationbottom 47% Globalbottom 37% Patentsbottom 30% Partners: 6 contract events in 12 mo · Named contractor/client in 6 deals Talent: Analyst team rating 5/5 · 4 named leaders on record rank vs industry peers · Fliar Intelligence Index 74/100 | $146M | 19 mo ago | 144 144 → 204 (+42%) · sector median +30% | 2014 | WordPressApple iCloud MailGoogle Workspace+30 | Top 5M | 2 patents Real-time monitoring and visualization of digital communications for compliance analytics | — |
| 7 | ComplyAdvantage Cloud-based AML solutions 64Talent top 28%Moat top 31%Funding top 34%Fin. health top 38% All 10 signals ▾Talenttop 28% Moattop 31% Fundingtop 34% Fin. healthtop 38% Markettop 41% Techtop 44% Producttop 45% Globaltop 48% Growthtop 50% Newsbottom 24% Talent: Analyst team rating 5/5 · 2 named leaders on record Moat: Editorial + unicorn rating 8/10 · Soonicorn rank vs industry peers · Fliar Intelligence Index 64/100 | $137M | 61 mo ago | 31 | 2014 | WordPressSentryApple iCloud Mail+35 | Top 1M | — | 1 launch · 1 award |
| 8 | Kape Provider of personal VPN security solution for secure internet access | $115M | 68 mo ago | 850 | 2003 | WordPressApple iCloud MailGoogle Workspace+21 | Top 5M | — | — |
| 9 | Elliptic Provider of blockchain analytics software for digital asset risk management 83Product top 21%Innovation top 23%Growth top 23%Funding top 25% All 11 signals ▾Producttop 21% Innovationtop 23% Growthtop 23% Fundingtop 25% Fin. healthtop 28% Talenttop 28% Moattop 31% Globaltop 42% Techtop 44% Markettop 48% Newsbottom 42% Product: 8 distinct product lines · Company stage: Series D Innovation: 8 product lines · Deep-tech classification: Blockchain rank vs industry peers · Fliar Intelligence Index 83/100 | $104M | 1 mo ago | 80 | 2013 | HubSpot CMS HubAnimate.cssBootstrap+28 | Top 5M | — | 1 launch |
| 10 | iProov Platform offering digital identity verification services 82AI top 18%Patents top 26%Moat top 28%Innovation top 30% All 13 signals ▾AItop 18% Patentstop 26% Moattop 28% Innovationtop 30% Techtop 31% Growthtop 33% Fin. healthtop 33% Fundingtop 36% Newstop 42% Producttop 44% Markettop 45% Globaltop 49% Talentbottom 49% AI: Classified as an AI company · Holds AI/ML patents (G06N-family CPC) Patents: 76 patents matched (strict assignee match) · 37 filings since 2022 vs 27 in 2017-21 rank vs industry peers · Fliar Intelligence Index 82/100 | $78M | 30 mo ago | 53 | 2011 | WordPressApple iCloud MailGoogle Workspace+39 | Top 5M | 76 patents Secure facial biometric authentication with liveness detection and real-time user guidance | — |
| 11 | Redsift Provider of domain and email security solutions against impersonation attacks | $70M | 51 mo ago | 46 46 → 100 (+117%) · sector median +30% | 2015 | PrismicSentryAtlassian Statuspage+25 | Top 5M | 3 patents Frameworks for guiding large language models in task planning and execution | — |
| 12 | VoxSmart Compliance management solutions for banks 74Talent top 15%AI top 18%Moat top 26%Patents top 31% All 12 signals ▾Talenttop 15% AItop 18% Moattop 26% Patentstop 31% Innovationtop 32% Fundingtop 32% Producttop 35% Growthtop 45% Globaltop 49% Techbottom 47% Marketbottom 46% Newsbottom 27% Talent: Analyst team rating 5/5 AI: Classified as an AI company · Holds AI/ML patents (G06N-family CPC) rank vs industry peers · Fliar Intelligence Index 74/100 | $62M | 38 mo ago | 70 70 → 64 (-9%) · sector median +30% | 2006 | WebflowAmazon Web ServicesTypekit+15 | Top 50M | 11 patents Patents concentrated in electrical & electronics | — |
| 13 | Ripjar Provider of risk management intelligence products for screening and threat investigation 57Talent top 28%Moat top 31%Funding top 34%Product top 41% All 12 signals ▾Talenttop 28% Moattop 31% Fundingtop 34% Producttop 41% Growthtop 43% Newstop 44% Fin. healthtop 44% AItop 45% Techtop 50% Marketbottom 49% Globalbottom 43% Innovationbottom 37% Talent: 3 named leaders on record · 3 C-suite/founder profiles curated Moat: Editorial + unicorn rating 8/10 · Soonicorn rank vs industry peers · Fliar Intelligence Index 57/100 | $60M | 0 mo ago | 95 95 → 104 (+9%) · sector median +30% | 2012 | WordPressApple iCloud MailMicrosoft 365+29 | Top 5M | — | 1 award |
| 14 | Napier Provider of an AI platform for anti-money laundering compliance 40Moat top 35%Talent top 37%News top 42%Fin. health top 42% All 12 signals ▾Moattop 35% Talenttop 37% Newstop 42% Fin. healthtop 42% Growthtop 45% Producttop 46% Fundingtop 48% Marketbottom 47% Techbottom 44% Globalbottom 40% Patentsbottom 38% Innovationbottom 30% Moat: Editorial + unicorn rating 8/10 · IP moat: 3 patents Talent: 2 named leaders on record · 2 C-suite/founder profiles curated rank vs industry peers · Fliar Intelligence Index 40/100 | $57M | 29 mo ago | 29 | 2018 | WebflowTypekitLinkedin Insight Tag+16 | Top 5M | 3 patents Design and manufacturing of clothing hanger and hanging system components | 1 launch · 2 awards |
| 15 | Element Decentralized team messaging app for enterprises | $52M | 58 mo ago | 128 128 → 107 (-16%) · sector median +30% | 2016 | BootstrapAmazon Web ServicesAtlassian Statuspage+17 | Top 500k | — | — |
| 16 | GSS Provider of sanctions screening services using industry-defined standards and shared platform | $47M | 40 mo ago | 5 | 2021 | WordPress Block EditorElementorWordPress+26 | Top 50M | — | — |
| 17 | SteelEye Provider of data-driven solutions for financial regulatory compliance and reporting | $43M | 45 mo ago | 37 | 2017 | Cart FunctionalityHubSpot CMS HubAnimate.css+17 | Top 10M | — | 2 awards |
| 18 | CybSafe Developer of software for managing human risk in cybersecurity environments | $40M | 48 mo ago | 4 | 2015 | WordPressApple iCloud MailGoogle Workspace+23 | Top 5M | — | — |
| 19 | Cado Security Provider of cloud investigation and response automation platform for security teams | $32M | 39 mo ago | 53 | 2020 | HubSpot CMS HubApple iCloud MailGoogle Workspace+24 | Top 5M | 10 patents Automated cloud/container forensics and security analysis for Kubernetes and serverless environments | — |
| 20 | Maze Provider of AI agents that identify and resolve cloud vulnerabilities 53Funding top 37%Talent top 45%Global bottom 48%Tech bottom 40% All 4 signals ▾Fundingtop 37% Talenttop 45% Globalbottom 48% Techbottom 40% Funding: Raised $30.6M across 2 rounds · 2 rounds over 2 yrs (1.0/yr) Talent: 2 named leaders on record rank vs industry peers · Fliar Intelligence Index 53/100 | $31M | 12 mo ago | — | 2024 | SkolengoApple iCloud MailMariaDB+19 | Top 10M | — | 2 launchs |
| 21 | Token Security Provider of machine-first identity security solutions 48Growth top 35%Funding top 38%Talent top 38%Tech top 48% All 6 signals ▾Growthtop 35% Fundingtop 38% Talenttop 38% Techtop 48% Globalbottom 45% Marketbottom 35% Growth: Fresh capital in last 24 mo Funding: Raised $27.0M across 2 rounds · 2 rounds over 2 yrs (1.0/yr) rank vs industry peers · Fliar Intelligence Index 48/100 | $27M | 16 mo ago | — | 2018 | Webflow EcommerceWebflowAmazon Web Services+23 | Top 10M | — | 2 launchs |
| 22 | Keyless Developer of biometric authentication platform providing passwordless multi-factor authentication solutions 48Funding top 32%Innovation top 33%Product top 33%Global top 42% All 10 signals ▾Fundingtop 32% Innovationtop 33% Producttop 33% Globaltop 42% Talenttop 43% Growthtop 48% Moattop 48% Newsbottom 47% Techbottom 46% Marketbottom 29% Funding: Raised $26.0M across 8 rounds · 8 rounds over 8 yrs (1.0/yr) Innovation: 10 product lines rank vs industry peers · Fliar Intelligence Index 48/100 | $26M | 16 mo ago | 15 | 2018 | StoryblokZohoNode.js+17 | Top 10M | — | — |
| 23 | Metomic Provider of data security posture management and compliance solutions for SaaS | $26M | 39 mo ago | 16 16 → 19 (+19%) · sector median +30% | 2018 | Webflow EcommerceWebflowSentry+28 | Top 5M | — | — |
| 24 | ThreatAware Platform to monitor and manage cybersecurity and compliance 40Talent top 34%Funding top 37%Patents top 44%Innovation top 47% All 8 signals ▾Talenttop 34% Fundingtop 37% Patentstop 44% Innovationtop 47% Techbottom 48% Moatbottom 48% Globalbottom 36% Marketbottom 34% Talent: Analyst team rating 4/5 · 2 named leaders on record Funding: Raised $25.0M across 1 rounds · 1 rounds over 1 yrs (1.0/yr) rank vs industry peers · Fliar Intelligence Index 40/100 | $25M | 3 mo ago | 37 37 → 41 (+11%) · sector median +30% | 2007 | TurbopackNode.jsHeadless UI+17 | Top 50M | 3 patents Device fingerprinting using time‑synchronization patterns for network security identification | — |
| 25 | Cyber Smart Cloud-based solutions for risk and vulnerability assessment | $25M | 39 mo ago | 39 39 → 74 (+90%) · sector median +30% | 2013 | WordPress Block EditorWordPressMySQL+30 | Top 10M | — | — |
| 26 | Glasswall Platform offering deployment security software 60Growth top 28%Patents top 33%Moat top 35%Funding top 39% All 10 signals ▾Growthtop 28% Patentstop 33% Moattop 35% Fundingtop 39% Innovationtop 42% Markettop 48% Globalbottom 49% Techbottom 44% Productbottom 39% Newsbottom 27% Growth: Headcount 101 → 125 (+24%) across vintages · Fresh capital in last 24 mo Patents: 110 patents matched (strict assignee match) · 17 filings since 2022 vs 41 in 2017-21 rank vs industry peers · Fliar Intelligence Index 60/100 | $24M | 13 mo ago | 125 | 2010 | WebflowApple iCloud MailMicrosoft 365+17 | Top 5M | 110 patents File risk assessment and sanitization via content disarm and reconstruction using AI | — |
| 27 | Obscuro Platform offering security solutions for blockchain infrastructure 11Funding top 45%Global bottom 39%Market bottom 28% All 3 signals ▾Fundingtop 45% Globalbottom 39% Marketbottom 28% Funding: Raised $22.4M across 3 rounds · 3 rounds over 3 yrs (1.0/yr) Global: Investors from 6 countries beyond United Kingdom rank vs industry peers · Fliar Intelligence Index 11/100 | $22M | 27 mo ago | 13 | 2022 | — | — | — | — |
| 28 | OutThink Provider of cloud based human risk intelligence solutions | $22M | 40 mo ago | 11 | 2015 | SanityApple iCloud MailMicrosoft 365+23 | Top 10M | 2 patents Detecting and preventing phishing attacks in email and web communications | 2 job openings |
| 29 | PQ Solutions Post quantum encryption based data and communication security | $17M | 33 mo ago | 12 12 → 7 (-42%) · sector median +30% | 2009 | WordPressApple iCloud MailGoogle Workspace+20 | Top 50M | — | — |
| 30 | LoopUp Provider of cloud-based voice solutions for Microsoft Teams telephony consolidation 53Talent top 38%Moat top 39%Market top 40%Funding top 41% All 9 signals ▾Talenttop 38% Moattop 39% Markettop 40% Fundingtop 41% Globaltop 44% Techbottom 49% Productbottom 48% Growthbottom 44% Newsbottom 24% Talent: 2 named leaders on record · 2 C-suite/founder profiles curated Moat: Editorial + unicorn rating 6/10 · 10 curated direct competitors tracked rank vs industry peers · Fliar Intelligence Index 53/100 | $16M | 19 mo ago | 200 200 → 112 (-44%) · sector median +30% | 2003 | WordPressApple iCloud MailMySQL+22 | Top 5M | — | 1 award |
| 31 | ThreatSpike Cloud based UTM solution for SME & SMB 27Tech top 45%AI top 45%Funding top 50%Product bottom 48% All 8 signals ▾Techtop 45% AItop 45% Fundingtop 50% Productbottom 48% Talentbottom 42% Globalbottom 32% Marketbottom 26% Newsbottom 15% Tech: 38 technologies across 4/8 capability areas · Cloud: Amazon Ses, Amazon Web Services AI: Product described with: machine learning rank vs industry peers · Fliar Intelligence Index 27/100 | $14M | 12 mo ago | 11 | 2011 | WordPressMySQLPHP+30 | Top 5M | — | 1 job opening · 1 launch |
| 32 | Smartbox.ai Cloud and AI based platform for analyzing forensic data risks | $12M | 35 mo ago | 6 | 2016 | WordPressSentryMySQL+26 | Top 10M | 4 patents Mobile device data extraction and performance assessment within cellular networks | 1 launch |
| 33 | Refute Platform offering disinformation detection and response services 24Funding top 38%Talent bottom 49%Tech bottom 45%Global bottom 36% All 5 signals ▾Fundingtop 38% Talentbottom 49% Techbottom 45% Globalbottom 36% Marketbottom 31% Funding: Raised $9.8M across 2 rounds · 2 rounds over 2 yrs (1.0/yr) Talent: 1 named leader on record · 1 C-suite/founder profile curated rank vs industry peers · Fliar Intelligence Index 24/100 | $10M | 4 mo ago | — | 2024 | Squarespace CommerceCart FunctionalitySquarespace+17 | Top 10M | — | 1 partnership |
| 34 | Pimloc Provider of machine learning-based image search solution 37AI top 25%Innovation top 35%Patents top 35%News top 37% All 10 signals ▾AItop 25% Innovationtop 35% Patentstop 35% Newstop 37% Fundingtop 42% Moattop 42% Globalbottom 42% Talentbottom 42% Techbottom 29% Marketbottom 24% AI: Classified as an AI company · Holds AI/ML patents (G06N-family CPC) Innovation: 8 patents (top 59% of patent-holders) · 8 filings since 2022 vs 0 in 2017-21 rank vs industry peers · Fliar Intelligence Index 37/100 | $9M | 11 mo ago | 7 | 2016 | — | — | 8 patents Real-time video analytics and selective editing for object tracking and modification | 1 launch |
| 35 | DynaRisk Anti-virus solutions provider 14News top 33%Funding top 36%Moat top 39%Tech bottom 43% All 6 signals ▾Newstop 33% Fundingtop 36% Moattop 39% Techbottom 43% Globalbottom 37% Marketbottom 24% News: 4 BI events in 12 mo (of 6 tracked, 1 types) · Top themes: Funding Funding: Raised $8.2M across 12 rounds · 12 rounds over 10 yrs (1.2/yr) rank vs industry peers · Fliar Intelligence Index 14/100 | $8M | 10 mo ago | 14 14 → 24 (+71%) · sector median +30% | 2015 | Apple iCloud MailGoogle Workspacetoastr+7 | Top 10M | — | 1 award |
| 36 | Cygnetise Provider of authorized signatory management platform | $8M | 32 mo ago | 13 13 → 19 (+46%) · sector median +30% | 2016 | Squarespace CommerceSquarespaceSentry+29 | Top 10M | 6 patents Secure electronic payment transaction verification and authorization state management systems. | — |
| 37 | OpenOrigins Provider of content authentication and provenance solutions for digital media 35AI top 15%Patents top 36%Moat top 38%Funding top 39% All 10 signals ▾AItop 15% Patentstop 36% Moattop 38% Fundingtop 39% Innovationtop 45% Talentbottom 49% Productbottom 48% Globalbottom 40% Newsbottom 18% Marketbottom 15% AI: Holds AI/ML patents (G06N-family CPC) Patents: 9 patents matched (strict assignee match) · 9 filings since 2022 vs 0 in 2017-21 rank vs industry peers · Fliar Intelligence Index 35/100 | $7M | 3 mo ago | 7 | 2018 | — | — | 9 patents Data verification, live broadcast delivery, and AI-driven scene validation technologies | — |
| 38 | Tracebit Cloud infrastructure security solutions 53Growth top 28%Funding top 38%Talent top 38%Moat top 39% All 8 signals ▾Growthtop 28% Fundingtop 38% Talenttop 38% Moattop 39% Techtop 46% Newstop 50% Marketbottom 36% Globalbottom 36% Growth: Web rank 10,000,000 → 5,000,000 YoY · Fresh capital in last 24 mo Funding: Raised $5.0M across 2 rounds · 2 rounds over 2 yrs (1.0/yr) rank vs industry peers · Fliar Intelligence Index 53/100 | $5M | 3 mo ago | — | 2022 | WebflowApple iCloud MailVimeo+23 | Top 5M | — | 1 launch |
| 39 | InnerWorks Platform building the future of behavioral data on web3 22Talent top 28%Funding top 43%Moat top 48%Global bottom 36% All 5 signals ▾Talenttop 28% Fundingtop 43% Moattop 48% Globalbottom 36% Marketbottom 24% Talent: 3 named leaders on record · 3 C-suite/founder profiles curated Funding: Raised $4.0M across 1 rounds · 1 rounds over 1 yrs (1.0/yr) rank vs industry peers · Fliar Intelligence Index 22/100 | $4M | 10 mo ago | 8 | 2020 | — | — | — | — |
| 40 | Mindgard Provider of AI development services 50AI top 20%Growth top 28%Funding top 44%Innovation top 47% All 10 signals ▾AItop 20% Growthtop 28% Fundingtop 44% Innovationtop 47% Patentstop 49% Techbottom 45% Moatbottom 42% Globalbottom 39% Marketbottom 23% Newsbottom 18% AI: Classified as an AI company Growth: Web rank 10,000,000 → 5,000,000 YoY · Fresh capital in last 24 mo rank vs industry peers · Fliar Intelligence Index 50/100 | $4M | 17 mo ago | 7 | 2022 | Webflow EcommerceWebflowApple iCloud Mail+18 | Top 5M | 3 patents Neural network training methods and systems | — |
| 41 | Synthesized Developer of synthetic data generation platform for machine learning model development 64Innovation top 23%Talent top 28%AI top 30%Growth top 35% All 10 signals ▾Innovationtop 23% Talenttop 28% AItop 30% Growthtop 35% Newstop 35% Producttop 36% Techtop 45% Fundingtop 46% Globalbottom 39% Marketbottom 25% Innovation: 9 product lines · Deep-tech classification: Artificial Intelligence Talent: 3 named leaders on record · 3 C-suite/founder profiles curated rank vs industry peers · Fliar Intelligence Index 64/100 | $3M | 13 mo ago | 12 | 2017 | WebflowAmazon Web ServicesVWO+21 | Top 10M | — | 1 partnership |
| 42 | Falkin Provider of real-time scam detection and prevention tools 37Talent top 38%Funding bottom 48%Global bottom 48% All 3 signals ▾Talenttop 38% Fundingbottom 48% Globalbottom 48% Talent: 2 named leaders on record · 2 C-suite/founder profiles curated Funding: Raised $2.0M across 1 rounds · 1 rounds over 1 yrs (1.0/yr) rank vs industry peers · Fliar Intelligence Index 37/100 | $2M | 7 mo ago | — | 2024 | — | — | — | — |
| 43 | RevEng.ai AI based cyber risk and vulnerability assessment solution 45Growth top 35%AI top 45%Funding top 47%Tech top 47% All 7 signals ▾Growthtop 35% AItop 45% Fundingtop 47% Techtop 47% Talentbottom 49% Globalbottom 37% Marketbottom 29% Growth: Fresh capital in last 24 mo AI: Product described with: ai based rank vs industry peers · Fliar Intelligence Index 45/100 | $1M | 0 mo ago | — | — | GhostProton MailNode.js+14 | Top 10M | — | — |
| 44 | Theodosian Provider of file-level encryption and access control for enterprise security 40Talent top 38%Global top 45%Funding bottom 44% All 3 signals ▾Talenttop 38% Globaltop 45% Fundingbottom 44% Talent: 2 named leaders on record · 2 C-suite/founder profiles curated Global: Investors from 3 countries beyond United Kingdom rank vs industry peers · Fliar Intelligence Index 40/100 | $1M | 8 mo ago | — | 2025 | — | — | — | — |
| 45 | SimpleX Developer of messaging application offering end-to-end encryption and open-source protocol | $1M | 22 mo ago | 3 | 2021 | VarnishTailwind CSSGitHub Pages+6 | Top 1M | 2 patents Electronic signage and display panel technologies for visual information presentation. | — |
| 46 | Vouchsafe Identity verification and KYC solutions for businesses 55Growth top 20%Talent top 38%Tech top 39%Global bottom 45% All 6 signals ▾Growthtop 20% Talenttop 38% Techtop 39% Globalbottom 45% Fundingbottom 43% Marketbottom 37% Growth: Web rank 50,000,000 → 5,000,000 YoY · Fresh capital in last 24 mo Talent: 2 named leaders on record · 2 C-suite/founder profiles curated rank vs industry peers · Fliar Intelligence Index 55/100 | $1M | 15 mo ago | — | 2022 | WordPressMySQLPHP+17 | Top 5M | — | 1 job opening |
| 47 | AssetPass Provider of a platform for secure digital asset transfer and legacy 22Talent top 38%Funding bottom 42%Product bottom 40%Market bottom 37% All 5 signals ▾Talenttop 38% Fundingbottom 42% Productbottom 40% Marketbottom 37% Globalbottom 30% Talent: 2 named leaders on record · 2 C-suite/founder profiles curated Funding: Raised $631k across 6 rounds · 6 rounds over 3 yrs (2.0/yr) rank vs industry peers · Fliar Intelligence Index 22/100 | $631K | 6 mo ago | — | 2018 | — | — | — | — |
| 48 | IDWise Provider of AI-based identity verification, document validation, and compliance solutions | $548K | 16 mo ago | 4 | 2020 | WordPressPleskMySQL+32 | Top 5M | — | 1 job opening |
| 49 | Smarter Contracts Cloud-based platform for data security 11Patents top 36%Innovation top 46%Funding bottom 43%Moat bottom 42% All 7 signals ▾Patentstop 36% Innovationtop 46% Fundingbottom 43% Moatbottom 42% Globalbottom 35% Newsbottom 22% Marketbottom 17% Patents: 5 patents matched (strict assignee match) · 5 filings since 2022 vs 0 in 2017-21 Innovation: 5 patents (top 71% of patent-holders) · 5 filings since 2022 vs 0 in 2017-21 rank vs industry peers · Fliar Intelligence Index 11/100 | $499K | 4 mo ago | 2 | 2018 | — | — | 5 patents Graphical user interfaces for consent management in software applications | 1 partnership |
| 50 | Aviel Provider of intelligence identifying and preventing fraudulent payments and scam activity | $468K | 13 mo ago | — | 2024 | — | — | — | — |
Top 12 Cybersecurity companies in London
#1
Series D · London, England · founded 2013 · 80 employees$104.3Mraised▾
Provider of blockchain analytics software for digital asset risk management. This technology enables the screening of transactions and wallets to identify potential financial crime. It facilitates the monitoring of digital asset activity to detect illicit behavior and assess risk levels associated with stablecoin issuers and decentralized finance protocols. The software provides tools for forensic investigations, allowing for the tracing of funds across different blockchain networks. It also offers data integration capabilities to support compliance workflows and regulatory reporting requirements.
- May 2026Series D$120M
- Sep 2025Series C—
- Oct 2021Series C$60M
- Dec 2019Series B$6.1M
#2
Series B · London, England · founded 2012 · 95 employees$60Mraised▾
Provider of risk management intelligence products for screening and threat investigation. The company offers solutions for adverse media screening and anti-money laundering name screening and monitoring. It also provides features such as a screening assistant, dynamic risk profiles, and artificial intelligence summaries. The company’s tools help organizations detect risks and uncover hidden threats.
- May 2026Series B—
- Nov 2024Series B—
- Jan 2023Series B—
- Sep 2020Series B$36.8M
#3
Quantexa 🦄Series F · London, England · founded 2016 · 552 employees$371.1Mraised▾
Developer of decision intelligence software for data analysis and management. This platform connects fragmented data sources to reveal relationships between entities. It utilizes graph analytics and artificial intelligence to automate decision-making processes across various sectors. The software assists in financial crime prevention, risk management, and customer intelligence by unifying siloed datasets into a single foundation. It provides tools for data quality assessment, lineage tracking, and the creation of reusable data products to support analytical models. The technology enables organizations to ground automated agents in real-world context for improved operational efficiency and investigation accuracy.
- Mar 2025Series F$175M
- Mar 2023Series E$129M
- Jul 2021Series D$154.1M
- Jul 2020Series C$64.7M
#4
Series A · London, England · founded 2007 · 37 employees$25Mraised▾
ThreatAware is a monitoring system which provides the facility to manage and monitor cybersecurity and compliance. It provides security alerts, historical trends, and inventory data, of the security tools. It highlights threats as they arise, and enables the organizations to see the true status of their security and resolve issues immediately. The pricing model is based on the number of computers to be monitored per month.
- Feb 2026Series A$25M
#5
Series A · London, England · founded 2018 · 7 employees$7.2Mraised▾
Provider of content authentication and provenance solutions for digital media. It verifies the authenticity of visual media at its origin using blockchain technology. The company offers solutions for archive anchoring, secure source validation, and an AI data marketplace. It enables users to maintain control and ownership of their media while cryptographically proving its origins. The company's blockchain ensures media files can be traced back to their origin and independently verified. It connects data rights holders with AI companies looking to responsibly license data for training.
- Mar 2026Series A$17.2M
- Nov 2024Seed$4.5M
- Dec 2021Seed$2.7M
#6
Seed · London, England · founded 2024$9.8Mraised▾
Platform offering disinformation detection and response services. It uses data analysis to identify and counter disinformation campaigns across multiple channels. The company models and scores threat behaviors to enable rapid, effective responses. Its founders possess extensive experience in building data analysis systems to combat various threats, including terrorism and cyberattacks. The service helps organizations mitigate reputational and financial damage from disinformation attacks.
- Feb 2026Seed$6.8M
- Dec 2024Seed$2.9M
#7
Series A · London, England · founded 2022$5Mraised▾
Cloud infrastructure security solutions. It is a cloud-native platform that generates and maintains custom decoy resources in cloud environments to optimize the intrusion detection capabilities. The platform creates canaries across cloud networks to identify and respond to threats.
- Mar 2026Series A$20M
- Jul 2024Seed$5M
#8
Series B · London, England · founded 2014 · 144 employees$146.2Mraised▾
Provider of AI-driven platform for regulatory compliance and risk management. The platform offers solutions for regulatory archiving, communications surveillance, and front office analytics. It also provides tools for alerts review, training, certification, and policy management. The platform delivers insights, streamlines workflows, and offers reporting capabilities. It transforms data into actionable insights to safeguard and enhance business operations.
- Oct 2024Venture Debt$70M
- Feb 2020Series B$134.9M
- Oct 2017Series A$24.9M
- Mar 2016Series A$7.1M
#9
Series A · London, England$1.4Mraised▾
AI based cyber risk and vulnerability assessment solution. The platform automatically analyses users endpoints including third party libraries and detects known vulnerabilities to reduce their cyber security risk. Some of platforms existing solutions contain, triage, or cyber attack migration.
#10
Series A · London, England · founded 2024$30.6Mraised▾
Provider of AI agents that identify and resolve cloud vulnerabilities. It offers a platform that ingests vulnerabilities from cloud vulnerability scanners. AI agents investigate each vulnerability in the context of the environment, remove false positives, and identify high-risk vulnerabilities. The platform provides mitigation and remediation actions to owners, shrinking vulnerability backlogs and helping to identify critical vulnerabilities. It uses intelligent workflows to prepare immediate mitigations for critical vulnerabilities and provides remediation options to engineering teams.
- Jun 2025Series A$24.9M
- Sep 2024Seed$5.7M
#11
Series A · London, England · founded 2015 · 14 employees$8.2Mraised▾
Anti-virus solutions provider. The solution combines personal risk factors with external data and algorithms to determine an individual's level of risk online and recommends possible remediation steps. The other solution includes a personal cybersecurity assessment which evaluates the risk associated with fraud, identity theft, system disruption and exposure to inappropriate content. The clients include CHUBB, HISCOX, ISACA, and many more.
- Jul 2025Series A$4.7M
- Nov 2023Seed$1.3M
- Dec 2021Seed$3.4M
- Feb 2021Seed$572.7K
#12
Seed · London, England · founded 2010 · 125 employees$24Mraised▾
Platform offering deployment security software. It offers a CDR platform that removes threats from every file. It provides deployable hubs across the organization to enable CDR workflows. It removes risk and anomalies, so that file is safe and usable, thus enhancing the deployment process. The platform helps to prevent future unknown attacks, giving users the freedom to access the files.
- Apr 2025Seed—
- Jul 2023Conventional Debt$6.4M
- Nov 2020Angel$24M
Funding & investor landscape
Notable founders
Market landscape — 10 sub-themes by coverage
Share of Cybersecurity coverage by sub-theme.
Regulatory-risk over time rising
Funding & growth over time
funding rising · growth rising
How research on Cybersecurity in London is moving
A read on the academic research around Cybersecurity in London — which themes are gaining ground, the institutions and researchers driving them, and how the tone is shifting. Based on 97 papers.
Imperial College London, City, and UCL lead London's cybersecurity research, focusing on network security and malware detection with a cautiously optimistic tone (mean stance 0.52).
- Imperial College London31
- City, University of London14
- University College London11
- Royal Holloway University of London10
- University of East London9
- Intrusion detection system2→10
- Robustness (evolution)1→4
- Computer security1→3
- Anomaly detection4→5
- Network security13
- Intrusion detection system11
- Computer security5
- Cloud computing4
- Exploit4
- Computer security9
- Network security4
- Computer network4
- Security service3
- Cryptography3