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Top Biotech companies in London

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

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

Ranked by current headcount across Biotech companies headquartered in London. Refreshed daily.

  1. 1
    LGC· London, England, United Kingdom
    • 1.9k employees
    • Founded 1996
  2. 2
    Perceptive Inc.· London, England, United Kingdom
    • Private equity
    • 1.3k employees
    • Founded 1996
  3. 3
    Autolus Therapeutics· London, England, United Kingdom
    • Post-IPO equity
    • 755 employees
    • Founded 2014
  4. 4
    Genomics England· London, England, United Kingdom
    • 564 employees
    • Founded 2013
  5. 5
    MeiraGTx· London, England, United Kingdom
    • Post-IPO equity
    • 417 employees
    • Founded 2015
Reveal 236 more·100 free credits, no card

Find engineers at Biotech companies in London

London has long been a hub for Biotech, and the list above ranks the largest Biotech companies headquartered there by current headcount, drawn from public LinkedIn and Crunchbase records. With 241 matching companies in our index, this is a good map of where the Biotech talent in Londonlives - useful whether you’re recruiting, partnering, or sizing a market.

The biggest Biotech companies in London tend to be the gravitational centres for specialised talent - senior engineers, ML researchers, applied scientists, designers - while the smaller ones compete on speed, equity, and proximity to founders.

Refolk converts this list into a live search. Ask for “Biotech engineers in Londonhiring senior staff” or “founders of Biotech companies in Londonwho left in the last 12 months” and Refolk returns a ranked shortlist with the evidence that earned each person a spot.

How this list is built

Refolk pulled Biotech companies headquartered in London from public LinkedIn and Crunchbase records, ranked them by current employee count, and kept those with at least 10 employees. The list refreshes once a day.

Last refreshed: Sun, 21 Jun 2026 14:04:41 GMT

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