Top Seed companies in London
Companies on their seed round, typically the first priced equity raise. Filtered to companies headquartered in London.
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Ranked by current headcount across Seed companies headquartered in London. Refreshed monthly.
- 1Cloud Consulting· London, England, United Kingdom
cloud consultingCloud consulting is a digitally native company that helps organisations reinvent themselves and unleash our potential through cloud computing.
- Seed
- 14.4k employees
- Founded 2018
- 2PwC UK· London, England, United Kingdom
Welcome to the PwC UK Linkedin page, bringing you updates and insights from our work and our people.We are founded on a culture of partnership with a strong commercial focus. This is reflected in our purpose: To build trust in society and solve important problems. Overseen by our Chairman, it drives what we say and do in our everyday work by informing our choice, shaping the debates, guiding our decision-making, and inspiring us to make extraordinary efforts.Find out more about us in our digital Annual Report here: bit.ly/1L1h6X9
- Seed
- 10.9k employees
- Founded 2008
- 3Idea· London, England, United Kingdom
At Idea, the work that we do enables our clients to realise greater possibilities and move forward faster than before.We help organisations overcome their business challenges by providing solutions that are clear and understandable. This, in turn, helps us to build strong relationships and earn our clients’ loyalty and repeat business.From concept to design, development to deployment and beyond, we can be there for you at any point in the technology solution cycle. Because, in the world of IT, innovation is always a work in progress.To learn more, please visit agency.org.uk today.
- Seed
- 3.8k employees
- Founded 1999
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- 4Healthcare AI· London, England, United Kingdom
Healthcare AI leverages machine learning algorithms and software to analyse complex medical data, leading to improved diagnosis, treatment, and prevention of diseases. By mimicking or exceeding human cognitive abilities, AI helps healthcare professionals make informed decisions, streamline workflows, and enhance patient care.
- Seed
- 3.4k employees
- Founded 2024
- 5Any One Thing· London, England, United Kingdom
Small, independent theatre production company.
- Seed
- 3.3k employees
- Founded 2019
Find engineers at Seed companies in London
Seed companies in London are some of the fastest-moving employers in the market. The list above ranks the largest Seed-stage companies headquartered in London by current headcount, drawn from public LinkedIn and Crunchbase records. With 1,865 matching companies in Refolk’s index, the density of senior engineers, designers, and founders is unusually high.
At Seed, teams tend to be small, ambitious, and on the hunt for senior talent. The companies on this list are good signals for where the London talent market is heating up - and for which engineers and founders are about to become tomorrow’s operators.
Refolk converts this list into a live search. Ask for “founders of Seed companies in London” or “senior engineers at Seed companies in London hiring” and Refolk returns a ranked shortlist with evidence behind each match.
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Last refreshed: Fri, 18 Sep 2026 07:55:02 GMT
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Related lists
- Series A in London
- Series B in London
- Seed in San Francisco
- Seed in New York
- Seed in Austin
- Series A in San Francisco
- Series B in San Francisco
- Series C in San Francisco
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How is this ranking built?
The list draws on the public company graph - headcount and growth signals, funding history, and recency. The criteria chips at the top show exactly which filters produced it, and the methodology section explains the ranking.
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