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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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Built from a search like: “Top Seed companies in London”

Ranked by current headcount across Seed companies headquartered in London. Refreshed monthly.

  1. 1
    Idea· 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
  2. 2
    Any One Thing· London, England, United Kingdom

    Small, independent theatre production company.

    • Seed
    • 3.3k employees
    • Founded 2019
  3. 3
    Anyone ☎️· London, England, United Kingdom

    Product Hunt → #1 Product of the Week. Fast Company → A World-Changing Idea. WIRED → One of Europe's Hottest Startups.

    • Seed
    • 2.3k employees
    • Founded 2019
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  5. 4
    Zero Gravity· London, England, United Kingdom

    At Zero Gravity, we’re here to break the link between background and opportunity. Our mission? To unlock potential by empowering ambitious students from low-opportunity areas to secure the universities and careers they deserve.Since 2019, we’ve built the UK’s leading tech platform for social mobility. Zero Gravity is packed with features designed to take talent to the top - from mentoring, masterclasses, scholarships, to exclusive internship and job opportunities.Here’s the impact so far:🎓 We’ve supported 8,000+ students to secure spots at top universities, including Oxford, Cambridge, and the Russell Group.💰 We’ve deployed £1.8 million in scholarships to low-income students, ensuring finances don’t stand in the way of ambition.🕺 Through partnerships with leading employers (think HSBC, KPMG, Morgan Stanley, and Jaguar Land Rover) we’re propelling students into elite careers, building pathways to lasting success.We don’t want to sound too grand; but we believe that Zero Gravity isn’t just a platform - it’s a movement. We’re reimagining a world where no student’s future is limited by their postcode, school, or bank balance.Want to learn more about how Zero Gravity can unlock your potential? Visit zerogravity.co.uk. To partner with us, reach out at hello@zerogravity.co.uk.

    • Seed
    • 1.6k employees
    • Founded 2019
  6. 5
    Outsourcing· London, England, United Kingdom

    Codebees provides business solutions for IT and services for outsourced businesses. Our expert recruiters are focused on your success, using a flexible model that is tailored to your needs and linked to your business objectives.We have a strong track record in outsourcing services, transitioning, implementation & execution of processes across multiple domains.Services:Web DevelopmentDigital MarketingSoftware DevelopmentHuman ResourceCloud ServicesLoyalty ProgrammeQuality Control and VerificationMarket ResearchDocument Management Solution

    • Seed
    • 1.6k employees
    • Founded 2015
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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 1,650 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.

How this list is built

Refolk pulled Seed companies headquartered in London from public LinkedIn and Crunchbase records, ranked them by current employee count, and kept those with at least 5 employees. The list refreshes monthly.

Last refreshed: Tue, 20 Oct 2026 15:50:55 GMT

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Common questions

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.

How fresh is the data?

The underlying index updates continuously and this ranking is rebuilt monthly. Last refreshed: Tue, 20 Oct 2026 15:50:55 GMT. For a list built against the index as it stands today, sign up and run the search live.

Can I get the full list of 1,650 companies?

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