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Series B Biotech companies in London

Companies applying biology, chemistry, and computation to therapeutics and tooling. Filtered to Series B-stage companies headquartered in London.

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Built from a search like: “Top Series B Biotech companies in London”

Ranked by current headcount across Series B Biotech companies in London. Refreshed monthly.

  1. 1
    Isomorphic Labs· London, England, United Kingdom

    Isomorphic Labs is here to advance human health by building on and beyond the Nobel-winning AlphaFold system. Our interdisciplinary team has developed a unified, state-of-the-art drug design engine that will transform how we design new drugs, and ultimately change the way medicine will help and heal people. Every day, and with each new breakthrough, we’re getting closer to achieving our ambitious mission to one day solve all disease

    • Series B
    • 434 employees
    • Founded 2021
  2. 2
    hVIVO· Canary Wharf, All Saints, West India Quay, Westferry, Heron Quays, South Quay, Island Gardens, East India Dock Road, East India, London Arena, Coldharbour, Limehouse, Millwall, Mudchute, Cubitt Town, Blackwall, Poplar, England, United Kingdom

    hVIVO plc (Ticker: HVO) is a science‐led early‐phase drug development company purpose‐built to meet the growing complexity of modern clinical research. The Company operates an integrated early‐phase ecosystem that combines specialist clinical sites, advanced virology and immunology laboratories, human challenge expertise, and early drug development consulting. This unified model enables sponsors to generate rigorous, decision‐ready human data earlier in development, reducing uncertainty and accelerating progression through Phase I and II trials.With industry‐leading capabilities in respiratory and infectious disease, alongside expanding expertise in cardiometabolic and other high‐growth therapeutic areas, hVIVO supports a diverse global client base that includes seven of the world’s ten largest biopharmaceutical companies. Its London quarantine facilities are the largest purpose‐built human challenge units in the world, complemented by additional early‐phase clinical capacity in Germany and a specialist consulting team providing strategic, regulatory, and biometry expertise.The Company’s integrated approach delivers a seamless pathway from preclinical planning through early proof‐of‐concept, supported by continuous patient recruitment through FluCamp and a network of outpatient clinical sites for Phase II and III studies. By unifying scientific insight, operational control, and advanced laboratory capabilities, hVIVO provides sponsors with the clarity, speed, and reliability required to advance new medicines with confidence.

    • Series B
    • 246 employees
    • Founded 1989
  3. 3
    Sava· London, England, United Kingdom

    All the health information we need is within us. Just below the skin. SAVA is redefining the way people interact with their health by developing the most advanced biosensing technology science has to offer, capable of accessing bodily information in a painless, real-time and affordable way.

    • Series B
    • 162 employees
    • Founded 2016
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  5. 4
    CHARM Therapeutics· London, England, United Kingdom

    CHARM's lead program is a next-generation menin inhibitor for the treatment of acute myeloid leukemia (AML). Unlike first-generation menin inhibitors that rapidly lose potency due to menin resistance mutations, CHARM's candidates are specifically designed to maintain potency against all known clinical resistance mutations, potentially delivering the durable responses that patients desperately need.

    • Series B
    • 30 employees
    • Founded 2021
  6. 5
    Prokarium· London, England, United Kingdom

    Prokarium is pioneering the field of microbial immunotherapy. Our pipeline is designed to unlock the next level of immuno-oncology by building on the most recent advances in cancer immunology. Prokarium’s lead program is focused on transforming the treatment paradigm in bladder cancer by orchestrating immune-driven, long-lasting antitumor effects.

    • Series B
    • 16 employees
    • Founded 2012
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Find engineers at Series B Biotech companies in London

Searching for “engineers at top Series B Biotech companies in London” surfaces this slice of the market. The list above ranks Biotech companies headquartered in London whose latest disclosed round is Series B, by current headcount, drawn from public LinkedIn and Crunchbase records. With 6 matching companies in Refolk’s index, this is a tight read on where the Biotech talent in London is heating up.

Three filters at once narrows the field hard. The companies that survive all three - Series B, Biotech, 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 Biotech’s next operators and angel investors.

Refolk converts this list into a live search. Ask for “senior engineers at Series B Biotech companies in London hiring” or “founders of Series B Biotech 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 Biotech companies headquartered in London whose latest disclosed funding round is Series B from public LinkedIn and Crunchbase records, ranked them by current employee count, and kept those with at least 3 employees. The list refreshes monthly.

Last refreshed: Mon, 19 Oct 2026 16:40:43 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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