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Seed AI companies in London

Companies building AI products, foundation models, and applied ML platforms. Filtered to Seed-stage companies headquartered in London.

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Built from a search like: Top Seed AI companies in London

Ranked by current headcount across Seed AI companies in London. Refreshed daily.

  1. 1
    LYMA· London Colney, England, United Kingdom

    LYMA is the breakout pioneer of world-leading anti-aging innovations. The LYMA Laser and the LYMA Laser PRO are powered by patented, cold laser technology engineered to deliver transformational cosmetic surgery results painlessly, at home andon the go. LYMA Skincare is the most active, epigenetic skin science in existence. The LYMA Supplement transforms sleep and stressby radically upgrading the body’s systems and increasing cellular health through its powerful anti-inflammatory formula and deliver the baseline for robust, foundational health: pure, preventative longevity science. Nothing as transformative as the LYMA System has ever existed. Until now.

    • Seed
    • 101 employees
    • Founded 2018
  2. 2
    Clerkenwell Health· London, England, United Kingdom

    Clerkenwell Health is building the UK’s leading specialist neuro and psychiatry site network, created to raise the standard of how CNS clinical trials are run. With three purpose-built research sites - including a first-of-its-kind NHS-partnered facility - and two more planned by 2026, we’re expanding access to high-quality research across the UK.Since 2021, we’ve worked with 20+ biotechs developing treatments for depression, PTSD, anxiety, addiction, pain and cognitive disorders. Our model blends specialist trial design, compassionate patient care and a purpose-built site network to deliver faster, more reliable trial outcomes, helping bring the next generation of neurological and mental health treatments to market.

    • Seed
    • 64 employees
    • Founded 2020
  3. 3
    Prima Mente· London, England, United Kingdom

    The AI Biology company.

    • Seed
    • 44 employees
    • Founded 2023
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  5. 4
    Early· London, England, United Kingdom

    Early's at-home urine test is designed to make screening for the earliest signs of chronic disease and tracking wellness markers routine. Built by world-class scientists, engineers and designers and fuelled by the conviction that knowing this was possible and not building it was never really an option.Easy, beautiful, necessary. Because too many people still hear “we caught it too late.”Early. Launching Spring 2027.

    • Seed
    • 30 employees
    • Founded 2022
  6. 5
    ENBIOSIS Biotechnology· London, England, United Kingdom

    Enbiosis is the World's First Digital Twin and AI-Powered Nutraceutical Formulation Engine.We use constraint-based metabolic modelling and genome-scale metabolic models to design clinically validated, food-grade nutraceutical formulations. Our platform maps microbiome-linked metabolic disruptions, identifies biological targets, and engineers precise formulations in silico before a single ingredient is selected. Each formulation is developed to FDA and EFSA compliant standards.Enbiosis licenses Powered by Enbiosis® blends to global food, beverage, and nutraceutical companies across multiple product formats and regions.UK Tech Rocketship Gold Winner | Peer-reviewed publications | Patent-protected formulations | FDA and EFSA compliant ingredients | 16 countries

    • Seed
    • 23 employees
    • Founded 2019

Find engineers at Seed AI companies in London

Searching for “engineers at top Seed AI companies in London” surfaces this slice of the market. The list above ranks AI companies headquartered in London whose latest disclosed round is Seed, by current headcount, drawn from public LinkedIn and Crunchbase records. With 59 matching companies in Refolk’s index, this is a tight read on where the AI talent in London is heating up.

Three filters at once narrows the field hard. The companies that survive all three - Seed, AI, in London - are usually the most targeted recruiting pool a hiring manager can ask for. Senior engineers, founding designers, and product leads here are about to become AI’s next operators and angel investors.

Refolk converts this list into a live search. Ask for “senior engineers at Seed AI companies in London hiring” or “founders of Seed AI companies in London who left in the last year” and Refolk returns a ranked shortlist with the evidence behind each match.

How this list is built

Refolk pulled AI companies headquartered in London whose latest disclosed funding round is Seed from public LinkedIn and Crunchbase records, ranked them by current employee count, and kept those with at least 3 employees. The list refreshes once a day.

Last refreshed: Wed, 05 Aug 2026 14:39:27 GMT

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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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