69 Best Privacy And Security Startups in London to Watch in 2025

The Definitive Seedtable Ranking of Privacy And Security Startups in London

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 72 start-ups with an aggregate funding of $3.5b. The average funding per company in this subset is $50.1m.

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

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10

Funding Rounds

$1.6b

Money raised

Snyk is a technology company offering a software development security platform using open-source code.

5

Funding Rounds

$37.7m

Money raised

42Crunch is an enterprise API security platform with integrated services, including an API firewall, to discover and remediate API security vulnerabilities.

Location:

Key people:

4

Funding Rounds

$51.0m

Money raised

Adarga is a UK-based artificial intelligence software provider working with customers across defense, national security, and commercial organizations.

8

Funding Rounds

$28.3m

Money raised

Hazy is a machine learning company creating statistically controlled synthetic data for fraud detection and risk modeling.

7

Funding Rounds

$184.7m

Money raised

Tessian (formerly Checkrecipient) is an artificial intelligence email security platform.

4

Funding Rounds

$140.0m

Money raised

iProov is a user authentication technology company based in London.

Location:

Key people:

2

Funding Rounds

$21.8m

Money raised

Privacy Automation Platform made to help businesses deliver transparent, trustworthy online experiences on autopilot

Location:

Key people:

6

Funding Rounds

$59.9m

Money raised

Yonder is a U.S-based company providing social media threat mitigation software.

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:

6

Funding Rounds

$19.7m

Money raised

Keyless is a privacy-preserving biometric authentication solutions provider founded in 2019 by Andrea Carmignani, Rolf Hoefer, Giuseppe Ateniese and Fabian Eberle.

Location:

Key people:

8

Funding Rounds

$30.9m

Money raised

Coinfirm is a Blockchain Analytics company.

Location:

Key people:

5

Funding Rounds

$99.6m

Money raised

CybSafe is a cloud-based platform focussed on addressing the human component of cyber security - an intelligent approach to awareness training.

Location:

Key people:

1

Funding Rounds

$2.7m

Money raised

An artificial Intelligence company that has developed a wearable device for voice communications. It is located in London, England and was founded in 2017.

5

Funding Rounds

$122.4m

Money raised

Noxtua is an AI-powered legal platform founded in 2017 by Felix Hahmann, Leif Nissen Lundbaek and Michael Huth.

Location:

Key people:

3

Funding Rounds

$52.0m

Money raised

Platform providing smart fraud detection and prevention to stop online payment fraud.

Location:

Key people:

5

Funding Rounds

$20.4m

Money raised

Checkstep develops an AI-driven platform designed to automate the process of moderating user-generated content.

Location:

Key people:

5

Funding Rounds

$36.3m

Money raised

CyberSmart is a London-based cybersecurity company developing automated compliance platform for small to medium enterprises.

1

Funding Rounds

$40.0m

Money raised

Egress is a software company that specializes in compliance and privacy management solutions for unstructured data.

Location:

Key people:

3

Funding Rounds

$63.5m

Money raised

Platform that helps businesses make informed, risk-based security decisions.

Location:

Key people:

3

Funding Rounds

$136.0m

Money raised

Privitar was a London-based software development company offering a data security platform. In June 2023, Privitar was acquired by Informatica.

Location:

Key people:

5

Funding Rounds

$165.1m

Money raised

InfoSum provides a decentralized platform designed to remove the trust barriers between progress and privacy.

Location:

Key people:

3

Funding Rounds

$15.5m

Money raised

Muso is a London-based cybersecurity company providing solutions for enterprises.

Location:

Key people:

5

Funding Rounds

$134.4m

Money raised

The Only Integrated Email Security and Brand Protection Platform

3

Funding Rounds

$8.5m

Money raised

Creating an ecosystem for Landlords, Agents, and Renters.

Location:

Key people:

1

Funding Rounds

$720.0k

Money raised

Platform using AI to help retailers understand what their customers are shopping for.

Location:

Key people:

2

Funding Rounds

$24.5m

Money raised

Soter Analytics uses wearable sensors to measure the activities of industrial workforces, analytics to calculate the probability of injury.

Location:

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.

1

Funding Rounds

$19.2m

Money raised

Developer of a metadata management software designed to help companies understand how their data flows through their systems. The company's software provides a digital transformation initiative to govern data, migrate to the cloud and receive regulatory reports, enabling organizations to map, manage and monetize their data assets.

Location:

Key people:

1

Funding Rounds

$2.5m

Money raised

BoxyHQ provides security building blocks for developers. BoxyHQ’s suite of APIs for security and privacy helps engineering teams build and ship compliant cloud applications faster.

2

Funding Rounds

$11.0m

Money raised

Worldr solves security and data protection in team communication, without compromising usability, allowing professionals to communicate and collaborate securely and seamlessly.

2

Funding Rounds

$42.0m

Money raised

SuperAwesome is a London-based company founded in 2013 by Tom Impallomeni.

1

Funding Rounds

$2.3m

Money raised

eXate provides pioneering technology that empowers organisations to protect, control and manage their sensitive data centrally, providing a complete data privacy solution.

2

Funding Rounds

Ohalo is a developer of automated data governance solutions.

3

Funding Rounds

$14.0m

Money raised

A company that provides a score for personal and SME cybersecurity.

1

Funding Rounds

$1.8m

Money raised

Platform delivering accurate digital ads without disclosing any personal data.

2

Funding Rounds

$28.5m

Money raised

ScanSafe is a London-based company founded in 2004.

3

Funding Rounds

$16.8m

Money raised

Platform for automatically managing and securing image and video content using deep learning.

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

$20.0m

Money raised

OutThink is a web-based platform (SaaS) that has been developed specifically to identify and reduce risky workforce behaviours and build a risk aware culture.

4

Funding Rounds

$72.0m

Money raised

Acin is an operational risk control platform founded in 2018 by Paul Ford.

Location:

Key people:

1

Funding Rounds

$24.1m

Money raised

Glasswall is a platform that protects organizations from file-based threats founded in 2005.

Location:

1

Funding Rounds

$3.0m

Money raised

Trunomi is a London-based company offering companies a platform to meet regulatory requirements.

1

Funding Rounds

$500.0k

Money raised

RankedRight is an automated cyber triage system which ranks vulnerabilities based on rules the user has put in place, saving time and improving the efficiency of IT security teams.

1

Funding Rounds

$25.0m

Money raised

Voice technology provider creating innovative speech recognition solutions.

Location:

Key people:

1

Funding Rounds

SureCloud is a Governance, Risk and Compliance (GRC) and Cybersecurity Solutions provider.

1

Funding Rounds

$630.0k

Money raised

Drone Defence is a tailored Drone Security Solutions founded in 2017.

1

Funding Rounds

CensorNet's award-winning cloud-based security software delivers enterprise-class security and flexibility to over 4,000 customers around the world.

1

Funding Rounds

$7.0m

Money raised

Intelex Vision is an AI-powered surveillance solutions provider founded in 2017 by Michael Vorstman.

Key people:

1

Funding Rounds

$350.0k

Money raised

Platform offering businesses real-time insights into data privacy and consent management.

1

Funding Rounds

$3.2m

Money raised

The complete fintech layer for marketplaces across payments, escrow, banking and credit in a single unified API.

1

Funding Rounds

$19.0m

Money raised

Platform that simulates real-world scenarios in real time to help computers solve practical problems.

Location:

Key people:

1

Funding Rounds

$500.0k

Money raised

Developer of a password managing software for businesses.

Location:

Key people:

1

Funding Rounds

$170.0k

Money raised

Risk monitoring and early warning in emerging and frontier markets.

2

Funding Rounds

$5.0m

Money raised

OutDID is an end-to-end private ID verification leveraging ZK Proofs.

Industries:

Location:

1

Funding Rounds

$100.0k

Money raised

Platform that offers 24/7 on-demand courier services for sending or receiving items within a town instantly.

1

Funding Rounds

$20.0m

Money raised

SenseOn is a platform delivering precise and context-informed security alerts.

1

Funding Rounds

$1.8m

Money raised

Platform offering complete home protection against digital threats.

1

Funding Rounds

$6.5m

Money raised

Platform that helps security teams manage and resolve automated privacy incidents in compliance with CCPA and GDPR.

1

Funding Rounds

$5.0m

Money raised

Distributed data science platform for federated, privacy-preserving analytics & AI/ML.

1

Funding Rounds

$260.0k

Money raised

Digital identity platform offering secure and protected online identity management.

1

Funding Rounds

$11.0m

Money raised

Platform providing compliance solutions for onboarding customers in regulated markets.

1

Funding Rounds

$4.4m

Money raised

Cyber risk assessment startup that helps businesses identify and manage potential digital threats.

1

Funding Rounds

$11.0m

Money raised

Platform providing tailored expertise for the Defence, Security, and Aerospace sectors.

1

Funding Rounds

$200.0k

Money raised

Schwarzthal Tech is an iaas (Intelligence as a Service.

1

Funding Rounds

$2.5m

Money raised

Your Gate to Corporate KYC for the Digital Economy

1

Funding Rounds

$4.0m

Money raised

Push Security is a security automation platform for developers founded in 2020.

1

Funding Rounds

$2.5m

Money raised

SaaS tool for investigating and prioritizing security alerts.

1

Funding Rounds

$1.2m

Money raised

Lab 1 is a cyber intelligence platform founded in 2019.

1

Funding Rounds

$880.0k

Money raised

Klarytee is a data protection platform founded in 2021.

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