63 Best Startups in London to Watch in 2025

The Definitive Seedtable Ranking of 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 2,942 start-ups with an aggregate funding of $16.7b. The average funding per company in this subset is $264.3m.

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

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5

Funding Rounds

$118.0m

Money raised

Qredo is a cross-chain protocol for asset managers and traders active in the digital asset markets.

15

Funding Rounds

$140.4m

Money raised

Synthace is a software company based out of London, UK, building automation software that gives biologists the ability to control and analyze the performance of lab hardware.

15

Funding Rounds

$43.0m

Money raised

What3words is a London-based company developing a global address system. The company was founded by Jack Waley-Cohen, Chris Sheldrick, Mohan Ganesalingam, and Michael Dent.

Location:

Key people:

4

Funding Rounds

$107.0m

Money raised

ComplyAdvantage is a company developing machine learning and big data based financial crime fighting software.

7

Funding Rounds

$124.0m

Money raised

Company providing user behavioral analytics for revenue optimization for websites and smartphone applications

Location:

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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.

7

Funding Rounds

$11.1m

Money raised

Sky Engine AI is an advanced data science technology and research company that develops evolutionary AI platform for deep learning in virtual reality for any computer vision applications.

Location:

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4

Funding Rounds

$5.3m

Money raised

Humanloop is a platform for annotating, training, and deploying natural language processing (NLP) models.

2

Funding Rounds

$12.1m

Money raised

Sky and Space Global is an Australian nanosatellite company focused on IoT networks.

Location:

Key people:

4

Funding Rounds

$1.5m

Money raised

Aura Vision is an AI computer vision company for generating insights into shop floors. Aura Vision uses existing security cameras in stores to provide customer demographics and behavior data.

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:

6

Funding Rounds

$100.9m

Money raised

AppZen is a San Jose, California-based company that provides an AI-based auditing platform for finance teams.

Key people:

2

Funding Rounds

$13.9m

Money raised

Tacit Knowledge is a London-headquartered software and IT consulting company developing enterprise software solutions for digital commerce companies.

Location:

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6

Funding Rounds

$898.4m

Money raised

Wise, previously TransferWise, is a company that offers money transfers services founded by Kristo Käärmann and Taavet Hinrikus.

4

Funding Rounds

$867.5k

Money raised

Intelistyle is a London-based artificial intelligence company founded by Michael Michelis and Kostas Koukoravas.

Location:

Key people:

7

Funding Rounds

$638.8m

Money raised

TradingView is a platform which provides instruments for publication and the viewing of trading ideas.

Key people:

4

Funding Rounds

$68.4m

Money raised

PolyAI is a company building an enterprise conversational platform with AI-generated voice assistants to improve customer experience.

Location:

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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.

12

Funding Rounds

$1.7b

Money raised

Revolut is a London-based Fintech startup and bank offering mobile banking, card payments, money remittance, and foreign exchange services.

Location:

Key people:

6

Funding Rounds

$237.0m

Money raised

Database management system, relational, open source, community developed fork of mysql

5

Funding Rounds

$21.0m

Money raised

Memgraph is an in-memory Cypher-compatible graph database.

Location:

Key people:

3

Funding Rounds

$24.7m

Money raised

Unitary AI is a UK AI startup providing a contextual platform for understanding and moderating video content.

Key people:

3

Funding Rounds

$2.9m

Money raised

Chronomics is an AI-driven platform company that tracks epigenetics for personalized healthcare based in the United Kingdom.

Key people:

4

Funding Rounds

$42.5m

Money raised

Vungle (Vungle, Inc.) is startup which powers video advertisements inside of mobile apps and games.

2

Funding Rounds

$21.0m

Money raised

ElevenLabs is a voice artificial intelligence (AI) research and development company developing text-to-speech and voice cloning software.

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10

Funding Rounds

$1.1b

Money raised

Starling is an UK-based mobile-first digital banking startup.

5

Funding Rounds

$28.9m

Money raised

Antidote.me closes the gap between clinical trials and patients

8

Funding Rounds

$488.0m

Money raised

Outreach is a sales engagement platform that uses artificial intelligence (AI) for predictive analytics as it relates to sales.

3

Funding Rounds

Carbon Analytics provides a SaaS platform solution designed to assess carbon emissions in companies' supply chains and generate actionable data that can be used to reduce emissions.

8

Funding Rounds

$28.3m

Money raised

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

12

Funding Rounds

$914.3m

Money raised

GoCardless is a payments company that developed global payments network based on the bank to bank payment systems. It participated in the S11 cohort of Y Combinator

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Key people:

9

Funding Rounds

$359.9m

Money raised

Payhawk is a provider of a financial system that combines credit cards, payments, and expenses into one experience.

Industries:

Location:

Key people:

1

Funding Rounds

$100.0m

Money raised

Voyager Labs is an artificial intelligence-based analytics and investigation solution provider, offering insights about individuals, groups, and topics.

Key people:

8

Funding Rounds

$729.5m

Money raised

Sysdig is a unified approach to container security, microservices monitoring, and forensics, with Kubernetes, Prometheus, and Falco support.

Key people:

1

Funding Rounds

$30.6m

Money raised

Badoo is a dating-focused social networking service.

Location:

Key people:

4

Funding Rounds

$118.2m

Money raised

Railsr, formerly Railsbank, is a London-based open-API banking and compliance platform that gives regulated and un-regulated companies access to global bankings.

7

Funding Rounds

$184.7m

Money raised

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

8

Funding Rounds

$543.7m

Money raised

Paddle is a London-based developer of a software-as-a-service commerce platform offering payments infrastructure for software companies.

1

Funding Rounds

$2.5m

Money raised

Toast Ale is a London-based brewery using surplus fresh bread to brew beer and dedicating their profits to charities working to create greater efficiency in the food supply system.

3

Funding Rounds

$30.5m

Money raised

Yewno is a company that has built AI technology for research and idea generation.

2

Funding Rounds

$19.0m

Money raised

Fnatic is a professional eSports organization with headquarters in London.

Location:

Key people:

7

Funding Rounds

$54.3m

Money raised

CrossLend is a FinTech company whose mission is to make the private debt space more efficient, transparent, and profitable by providing technology & infrastructure solutions for debt asset transactions.

Key people:

1

Funding Rounds

Vollebak is a British clothing brand focusing on utilizing technology and science to construct "clothing for the future."

6

Funding Rounds

$190.5m

Money raised

Kuur Therapeutics focuses on the development of CAR-NKT cell therapies platform for applications in cancer treatment.

3

Funding Rounds

$12.1m

Money raised

Artificial Intelligence company and FCA authorized mortgage lender in the UK helping renters purchase their first homes.

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Key people:

7

Funding Rounds

$121.8m

Money raised

Artificial intelligence to help perform visual tasks with more speed, accuracy, and scale

3

Funding Rounds

$31.0m

Money raised

Azimo is an online remittance service founded by Marta Krupinska.

3

Funding Rounds

$80.7m

Money raised

ZeroAvia is an aerospace company developing practical zero emission aviation powertrains using hydrogen power.

7

Funding Rounds

$65.0m

Money raised

EDITED is a London-headquartered retail intelligence and real-time analytics platform.

Location:

Key people:

9

Funding Rounds

$87.8m

Money raised

Everledger is a supply chain and asset tracking company using blockchain to store records of valuable assets like diamonds.

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Key people:

3

Funding Rounds

$5.3m

Money raised

Minimum is a carbon tracking and carbon offsetting company

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Key people:

4

Funding Rounds

$140.0m

Money raised

iProov is a user authentication technology company based in London.

Location:

Key people:

4

Funding Rounds

$504.6m

Money raised

Infobip is a service provider for cloud-based mobile services.

8

Funding Rounds

$204.2m

Money raised

Elvie is a London-based consumer electronics company making sexual health and pregnancy products for women.

Location:

Key people:

2

Funding Rounds

$8.0m

Money raised

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

Key people:

8

Funding Rounds

$101.4m

Money raised

Synthetic biology company that uses AI, DNA synthesis, and robotics to discover biological molecules.

Location:

Key people:

3

Funding Rounds

$107.0m

Money raised

Drift is a software company offering a conversational marketing platform founded in 2015 by David Cancel.

7

Funding Rounds

$39.7m

Money raised

EmitWise helps large businesses monitor and reduce their carbon footprints.

14

Funding Rounds

$4.1b

Money raised

A financial technology company offering a mobile-first platform for payments through a single API and SDK.

Location:

Key people:

6

Funding Rounds

$86.6m

Money raised

Prokarium is a biopharmaceutical company focused on developing vaccination and cancer immunotherapy solutions based on synthetic biology.

Location:

Key people:

2

Funding Rounds

$83.0m

Money raised

Mimecast is a London-based cybersecurity and email management platform company founded by Neil Murray and Peter Bauer.

Location:

Key people:

3

Funding Rounds

$2.9m

Money raised

Artificial Intelligence company using Augmented Reality for collaborative professional services

Key people:

4

Funding Rounds

$17.5m

Money raised

Yieldify is a website and mobile personalized engine no-code software for e-commerce brands used for improving sales conversion rates.

Key people:

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