74 Cyber Security startups in the UK (free list)
Track funded UK cyber security companies, founders and investors across the UK startup ecosystem.
Updated daily by John-Pierre ClarkUpdated daily by John-Pierre Clark| Date | Startup | Funding | Round | Sector | Location | Connect | Website | Investor1 | Investor2 | Investor3 | Investor4 | Investor5 | Founder(s) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
28 May 2026 |  Geordie Geordie is a platform that discovers and maps AI agents, monitors behaviour... | £22,000,000 | |||||||||||
20 May 2026 |  Infrawatch Infrawatch is a platform that maps and monitors servers, domains and other ... | £2,200,000 | |||||||||||
1 May 2026 |  Kigen Kigen provides eSIM and remote SIM provisioning security solutions plus a p... | £10,000,000 | |||||||||||
7 Apr 2026 |  Trent AI Trent AI provides a unified security platform that inserts monitoring acros... | £9,820,000 US$13,000,000 | |||||||||||
17 Mar 2026 |  Tracebit Tracebit is a cybersecurity platform that deploys security canaries and dec... | £15,030,000 US$20,000,000 | |||||||||||
26 Feb 2026 |  ThreatAware ThreatAware is a cyber asset management platform with an AI-powered workspa... | £18,460,000 US$25,000,000 | |||||||||||
22 Jan 2026 |  Asymmetric Security Asymmetric Security offers a digital forensics platform that uses AI to aut... | £3,130,000 US$4,200,000 | |||||||||||
15 Jan 2026 |  Cyb3r Operations Cyb3r Operations is a platform for continuous monitoring and management of ... | £4,000,000 | |||||||||||
18 Nov 2025 |  TMT ID TMT ID provides a mobile identity platform that performs real-time checks o... | £30,000,000 | |||||||||||
11 Nov 2025 |  FALKIN FALKIN is a digital safety service that embeds AI deception detection into ... | £1,600,000 | |||||||||||
16 Oct 2025 |  Theodosian Theodosian offers a file-level encryption and compliance platform that keep... | £967,000 US$1,300,000 | |||||||||||
15 Oct 2025 |  Ploy Ploy is a cloud-based identity and access platform that manages user accoun... | £2,500,000 | |||||||||||
15 Oct 2025 |  CybaVerse CybaOps is an all-in-one cyber security management platform for SMEs and MS... | £5,000,000 | |||||||||||
9 Oct 2025 |  Sitehop Sitehop's SAFEseries is a hardware encryption system that runs on specialis... | £7,500,000 | |||||||||||
6 Oct 2025 |  Talion Talion delivers managed detection and response and penetration testing for ... | £2,000,000 | Leeds  | ||||||||||
20 Aug 2025 |  Innerworks London's Innerworks secures £2,960,000 to boost cybersecurity for finance, ... | £2,960,000 US$4,000,000 | |||||||||||
14 Aug 2025 |  Archestra Archestra.ai is an open-source platform for securely deploying and managing... | £2,430,000 US$3,300,000 | |||||||||||
5 Aug 2025 |  Resilience Media London's Resilience Media secures undisclosed Seed funding to empower NATO'... | ||||||||||||
4 Aug 2025 |  Approov Edinburgh's Approov secures £5 million in Series A funding to enhance mobil... | £5,000,000 | |||||||||||
3 Jun 2025 |  ThreatSpike ThreatSpike secures £10.4m to simplify cybersecurity for mid-sized enterpri... | £10,400,000 | |||||||||||
3 Jun 2025 |  Melius CyberSafe Melius CyberSafe secures £250K from NEVF to supercharge its cybersecurity p... | £250,000 | Newcastle | ||||||||||
27 May 2025 |  SCI Semiconductor UK start-up SCI Semiconductor is tackling 70% of cyber-attacks with its £2.... | £2,500,000 | |||||||||||
8 May 2025 |  Valarian Valarian secures £5,250,000 to enhance secure communication infrastructure,... | £5,250,000 US$7,000,000 | |||||||||||
1 May 2025 |  The Networking People YFM Equity Partners invests in The Networking People, setting the stage for... | Lancaster | |||||||||||
30 Apr 2025 |  AVIEL Intelligence AVIEL Intelligence emerges with a £350k investment to combat the scam epide... | £350,000 | |||||||||||
24 Apr 2025 |  Glasswall Discover how Glasswall, backed by PSG Equity, is reshaping cybersecurity wi... | ||||||||||||
13 Mar 2025 |  Botguard Blackwall secures £37,830,000 to enhance cybersecurity, protecting millions... | £37,830,000 €45,000,000 | |||||||||||
18 Feb 2025 |  Nothreat Nothreat™ raises seed funding, eyes future at £40m valuation with its AIoT ... | ||||||||||||
22 Jan 2025 |  Keyless In the fight against identity fraud, Keyless leads the charge through innov... | £1,622,849 US$2,000,000 | |||||||||||
20 Dec 2024 |  Mindgard Mindgard scores big with $8 million in funding to revolutionize AI security... | US$8,000,000 |
1 Explore 74 UK cyber security startups and their founders, who have collectively raised £1.34B.
2 Easily sort, filter, and compare the UK's top startups — customise the list to your needs.
3 Discover top startups for investment, B2B sales, partnerships, hiring, and industry connections.
You can connect with fast-growing cyber security startups with the full list of recently funded startups from the UK.
Cyber security services in the UK are hot right now due to the increasing frequency and sophistication of cyber threats, the global digital transformation, and the critical need to secure remote work environments.
Tons of startups are being launched and raising funds from investors.
UK cybersecurity startup insights
The UK cybersecurity ecosystem is expanding rapidly as companies face increasing threats across cloud, identity, data and infrastructure. London, Cheltenham, Manchester and Belfast are key hubs for funded security startups.
Cybersecurity in this context includes threat detection, identity and access management, cloud security, offensive security tooling, vulnerability management, fraud prevention and AI-driven defence systems. Funding covers early-stage security R&D through to growth-stage commercial platforms.
Snapshot of the UK cybersecurity landscape
- Strong activity across cloud, identity, data protection and incident response
- Key hubs include London, Cheltenham and Northern Ireland
- Funding ranges from SEIS seed rounds to large Series A deals
- Investors include specialist security funds, deeptech VCs and corporate security groups
- Increasing demand driven by cloud adoption, AI and regulatory pressure
Use this page to explore the fastest growing cybersecurity startups in the UK, with profiles covering websites, investors, locations and recent funding rounds.
What is cyber security?
Cyber security refers to the practice of protecting computer systems, networks, and digital information from various forms of cyber threats.
These threats can include unauthorised access, data breaches, identity theft, malware, ransomware, and other malicious activities that can compromise the confidentiality, integrity, and availability of information.
That’s for the existing startups, but if you want to launch your business in cyber-security, securing the right funding is crucial. Many cyber-security investors are backing the next generation of innovative startups. These are some of the most exciting sectors to look at:
7 cyber security sectors ready for disruption
The field of cyber security encompasses a wide range of measures and technologies designed to safeguard digital systems and data. Some key aspects of cyber security include:
1 - Network Security
Involves the protection of computer networks from unauthorised access and attacks. This may include the use of firewalls, intrusion detection/prevention systems, and virtual private networks (VPNs).
2 - Endpoint Security
Focuses on securing individual devices (endpoints) such as computers, smartphones, and tablets. This may involve antivirus software, anti-malware tools, and other measures to prevent or detect malicious activities on these devices.
3 - Information Security
Involves protecting the confidentiality, integrity, and availability of sensitive information. Encryption, access controls, and data loss prevention measures are commonly used to safeguard information.
4 - Application Security
Focuses on securing software applications from vulnerabilities and exploits. This includes secure coding practices, regular security assessments, and the use of security tools to identify and patch vulnerabilities.
5 - Cloud Security
Addresses the security challenges associated with cloud computing, ensuring that data stored in the cloud is protected from unauthorised access and other threats.
6 - Incident Response
Involves the development and implementation of plans to respond to and recover from cyber security incidents. This includes identifying and mitigating the impact of security breaches.
7 - Security Awareness and Training
Educating users about cyber security best practices and promoting a security-conscious culture within organisations to reduce the risk of human-related security breaches.
As technology evolves, so do the challenges in cyber security. Professionals in this field continually adapt to new threats and vulnerabilities, working to develop and implement effective security measures to protect digital assets.
How to learn more about Cyber Security?
The UK offers various educational institutions where you can study cyber security at different levels, including undergraduate and postgraduate degrees, as well as specialised certifications.
Here are some well-known institutions that offer cyber security programs:
- MSc in Software and Systems Security, University of Oxford
- Cyber Security Centre at the Department of Computer Science, University of Oxford
- MPhil in Advanced Computer Science (Security and Privacy), University of Cambridge
- Computer Laboratory - Security Group, University of Cambridge
- MSc Cyber Security, University of Cambridge
- Institute for Security Science and Technology, University of Cambridge
- MSc in Informatics - Information Security, University of Edinburgh
- Centre for Doctoral Training in Cyber Security, University of Edinburgh
- MSc Information Security, University College London (UCL)
- Centre for Doctoral Training in Cyber security, University College London (UCL)
- MSc Cyber Security, University of Southampton
- Cyber Physical and Human Systems Group, University of Southampton
- MSc Cyber Security and Management, University of Warwick
- Warwick Research in Computer Science (Cyber Security), University of Warwick
- MSc Cyber Security, University of Birmingham
- Security and Privacy Group, University of Birmingham
- MSc Information Security, Royal Holloway, University of London
- Information Security Group, Royal Holloway, University of London
- University of Surrey, Royal Holloway, University of London
- MSc Cyber Security, Surrey Centre for Cyber Security
- MSc Cyber Security, Northumbria University
- Cyber Physical Systems Security Group, Northumbria University
- MSc Cyber Security, University of Manchester
- Information Security Group, University of Manchester
Related cybersecurity and infosec resources
Frequently asked questions
Cyber security startups build products that protect organisations, software, data, networks, identities and digital infrastructure from attack. UK cyber security startups commonly work across threat detection, cloud security, identity, compliance, fraud prevention, operational security and AI-enabled security tools.
Cyber security startups are growing because businesses, governments and consumers face rising digital risk. The UK has strong technical talent, enterprise demand, financial services customers and national security expertise, making it a strong market for cyber security innovation.
Cyber security startups raise funding from angel investors, venture capital firms, specialist security investors and strategic corporate partners. Investors often look for deep technical expertise, urgent customer pain, strong retention, enterprise sales potential and clear differentiation from crowded security tools.
London, Cheltenham, Bristol, Manchester, Cambridge, Belfast and Edinburgh are important cyber security ecosystems in the UK. These hubs benefit from combinations of technical talent, government or defence links, enterprise customers and university research.
Investors in cyber security startups look for credible technical founders, defensible technology, clear buyer urgency and evidence that customers will adopt the product quickly. Strong security startups often solve painful problems around cloud infrastructure, identity, compliance, fraud or threat detection.