53 Best Cybersecurity Startups in Uk to Watch in 2025

The Definitive Seedtable Ranking of Cybersecurity Startups in Uk

We track 71,000+ companies and rank them dynamically using our Seedtable Score – a score that uses quantitative and qualitative data points to signal the momentum behind a company. We then monitor the list manually leveraging our expertise as founders and investors.

There are 53 start-ups with an aggregate funding of $1.6b. The average funding per company in this subset is $30.5m.

Last update to the database: Feb 18, 2025. See changelog.

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6

Funding Rounds

$317.0m

Money raised

BigPanda offers a platform that helps IT Ops, NOC, and DevOps teams detect, investigate, and resolve IT incidents.

2

Funding Rounds

$8.0m

Money raised

Crypto Quantique is a company that specializes in quantum cyber security.

Key people:

2

Funding Rounds

$3.9m

Money raised

StatusToday is an artificial Intelligence company for Employee Behavioral Analytics founded in 2015 by Ankur Modi.

1

Funding Rounds

$5.0m

Money raised

User authentication and fraud prevention with biometric Identity-as-a-Service. AimBrain provides face, voice, lipsync, behavior and anomaly detection modules.

3

Funding Rounds

$50.0m

Money raised

Anodot is a software development company that has created a business monitoring platform.

Key people:

1

Funding Rounds

$1.0m

Money raised

An artificial intelligence company that has created software to combat astroturfing, harmful social media manipulation campaigns. It was founded in 2018 and has offices in London, England and San Francisco, California.

4

Funding Rounds

$11.2m

Money raised

Post-Quantum is a company that is developing quantum-resistant encryption for protection against code-breaking quantum computers and quantum-resistant signature schemes for secure blockchain deployment.

3

Funding Rounds

$4.7m

Money raised

Crypta Labs is quantum security startup that is developing a quantum-based encryption chip and software to secure the Internet of Things. The company developed a Quantum Random Number Generator (QRNG) for mobile devices and an integrated security chip for others. The company is targeting transport, military and medical markets.

Key people:

14

Funding Rounds

$441.3m

Money raised

Tines is a dublin-based no-code security automation company founded in 2018.

2

Funding Rounds

ArQit is working to provide the world's first global quantum encryption SaaS Business. They will use QKD technology to create unique keys that can be shared between two parties using laser transmissions from a satellite. The company is based in London, England and was founded in 2017.

3

Funding Rounds

$35.5m

Money raised

Slice Labs is a company offering an on-demand insurance marketplace founded in 2015 by Tim Attia.

Key people:

6

Funding Rounds

$171.3m

Money raised

Friss is a company that develops fraud detection and risk assessment software for P&C Insurance companies.

11

Funding Rounds

$7.1m

Money raised

My1login is a company founded in 2007 by Michael Newman.

Key people:

5

Funding Rounds

$3.0m

Money raised

Factmata is a company that provides AI-enhanced digital marketing.

7

Funding Rounds

$6.7m

Money raised

PixelPin is a cybersecurity company providing authentication security using pictures rather than passwords.

6

Funding Rounds

$37.7m

Money raised

Eseye Limited is a telecommunication company based in Guildford, Surrey.

Key people:

3

Funding Rounds

$60.1m

Money raised

Eigen Technologies is a London-based artificial intelligence company founded in 2014.

5

Funding Rounds

$72.0m

Money raised

Established in 2015, we called ourselves Digital Risks. We set out with a simple ambition: to make insurance better for digital businesses. We sparked something special: great products, and a seamless experience to match. In 2020, we became Superscript. A name that, by definition, encapsulates what we're all about: elevating our customers by providing better cover. Superscript is about acknowledging all that we've achieved as Digital Risks and taking things to the next level. We now provide advised and online cover for over 1,000 business types. Our mission is to be able to share our ever-evolving customer-led offering with a broader range of businesses. To become a global leader in business insurance.

3

Funding Rounds

$7.2m

Money raised

Nova Leah helps connected medical device manufacturers meet cybersecurity compliance requirements throughout the entire product lifecycle.

1

Funding Rounds

$2.5m

Money raised

SOC.OS is a London-based cybersecurity company developing an alert correlation product.

Key people:

1

Funding Rounds

$276.8k

Money raised

Miracl is a London-based provider of secure authentication services.

2

Funding Rounds

$10.0m

Money raised

Relative Insight is a company founded in 2012 by Phil Greenwood.

Key people:

1

Funding Rounds

Trunarrative Ltd is a platform for fraud detection founded in 2016.

2

Funding Rounds

$70.0m

Money raised

Callsign is a London-based cybersecurity and network security company developing multi-factor authentication and authorization engine.

Key people:

1

Funding Rounds

$1.3m

Money raised

Torsion is an innovative information security and compliance engine, which runs either in the cloud or your data centre.

2

Funding Rounds

$33.0m

Money raised

Veridium is a leader in single step - multi factor biometric authentication, designed to safeguard enterprises' most critical assets.

3

Funding Rounds

$120.0m

Money raised

Cloud-Based Risk & Compliance Management. Simplify, automate and centralise your risk and compliance programme with the 3GRC Platform.

3

Funding Rounds

$364.6k

Money raised

MyDocSafe.com is a blockchain company founded in 2013 by Daniel Stachowiak.

1

Funding Rounds

$1.2m

Money raised

Ideagen is a developer and provider of compliance-based information management software.

2

Funding Rounds

$12.0m

Money raised

Simudyne is an artificial Intelligence company founded in 2017 by Justin Lyon.

2

Funding Rounds

$10.0m

Money raised

We enable organisations to better organise their information, removing risk and making it more productive and secure.

2

Funding Rounds

$1.1m

Money raised

Melius Cyber is a cyber risk detection platform for SMEs founded by Eldon Jobe .

Key people:

1

Funding Rounds

$5.0m

Money raised

BullGuard is a cybersecurity and antivirus software company.

1

Funding Rounds

$3.2m

Money raised

Threat Intelligence is only part of the solution. Our solution matches threats to vulnerabilities and automatically takes remedial action against compromised apps, devices and websites.

1

Funding Rounds

$4.0m

Money raised

Exclusive Networks accelerate market entry and growth for innovative cybersecurity, networking and infrastructure technologies.

1

Funding Rounds

$18.9k

Money raised

AppsPicket is a blockchain company founded in 2015 by Kunal Sharma.

Key people:

1

Funding Rounds

$4.4m

Money raised

ZoneFox is an Edinburgh-based cybersecurity company developing software and consulting packages for data security and compliance.

2

Funding Rounds

$26.0m

Money raised

ThreatMark is a behavior-based fraud prevention platform founded in 2015 by Krystof Hilar.

Key people:

1

Funding Rounds

$17.5m

Money raised

Harmonic Security is a zero-touch data protection platform founded in 2023 by Alastair Paterson.

Key people:

1

Funding Rounds

$3.7m

Money raised

Company

1

Funding Rounds

$780.0k

Money raised

inWebo is a SaaS provider of Identity Protection & two-factor Authentication built to secure access to VPN, web sites, Mobile and Cloud Apps.

1

Funding Rounds

$5.0m

Money raised

Zamna (previously VChain Technology) is an award-winning software company building GDPR compliant identity platforms for the aviation industry.

2

Funding Rounds

$9.0m

Money raised

SplxAI is a cybersecurity platform for AI applications founded in 2023 by Kristian Kamber .

1

Funding Rounds

$4.5m

Money raised

Media authenticity platform for companies to secure or anchor genuine content.

Key people:

1

Funding Rounds

$2.9m

Money raised

Refute is an AI-powered disinformation detection platform founded in 2024 by Tom Garnett .

Key people:

1

Funding Rounds

$800.0k

Money raised

FAT32 is a compliance automation platform founded in 2024 by David Warren , Connor Greig and Conor Sizeland .

Key people:

1

Funding Rounds

$10.8m

Money raised

Adzuna is a search engine for job ads used by over 10 million visitors per month that aims to list every job everywhere, including thousands of vacancies in Cybersecurity.

1

Funding Rounds

$1.5m

Money raised

Cyber security management platform.

1

Funding Rounds

$2.2m

Money raised

Cytix is a security testing orchestration platform founded in 2022 by Ben Armstrong, Matt Milan and Thomas Ballin.

Key people:

1

Funding Rounds

$1.3m

Money raised

adCAPTCHA is a dynamic security verification platform founded in 2023 by Matthew Gibney.

Key people:

1

Funding Rounds

$5.0m

Money raised

Countercraft Ltd is a United Kingdom-based cybersecurity company founded in 2016.

Industries:

Location:

1

Funding Rounds

$2.5m

Money raised

Heliocor is a United Kingdom-based company.

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