Refolk

Top Healthtech companies in London

Companies building software and devices for clinicians, patients, and payers. Filtered to companies headquartered in London.

Built from a search like: Top Healthtech companies in London

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

  1. 1
    NHS England· London Colney, England, United Kingdom
    • 57k employees
    • Founded 2012
  2. 2
    Bupa UK· London Area, United Kingdom
    • Debt
    • 21k employees
    • Founded 1947
  3. 3
    Guy's and St Thomas' NHS Foundation Trust· London, England, United Kingdom
    • Grant
    • 11.4k employees
    • Founded 1993
  4. 4
    Barts Health NHS Trust· London, England, United Kingdom
    • 9.9k employees
    • Founded 2012
  5. 5
    Nuffield Health· London, England, United Kingdom
    • Debt
    • 9.1k employees
  6. 6
    Virgin Active· London, England, United Kingdom
    • Private equity
    • 7.6k employees
    • Founded 1999
  7. 7
    Imperial College Healthcare NHS Trust· London, England, United Kingdom
    • 7.2k employees
  8. 8
    London Health Sciences Centre (LHSC)· London, Ontario, Canada
    • 7k employees
  9. 9
    Spire Healthcare Group plc· London, England, United Kingdom
    • Post-IPO equity
    • 6.5k employees
    • Founded 2007
  10. 10
    King's College Hospital NHS Foundation Trust· London, England, United Kingdom
    • 6.4k employees
    • Founded 1913
  11. 11
    Acacium Group· London, England, United Kingdom
    • 6k employees
  12. 12
    Circle Health Group· London, England, United Kingdom
    • 5.7k employees
    • Founded 2021
  13. 13
    University College London Hospitals NHS Foundation Trust· London, England, United Kingdom
    • 5.7k employees
  14. 14
    Barchester Healthcare· London, England, United Kingdom
    • 5.7k employees
    • Founded 1992
  15. 15
    GoodLife Fitness· London, Ontario, Canada
    • Private equity
    • 5.5k employees
    • Founded 1979
  16. 16
    St John Ambulance· London, England, United Kingdom
    • 5.2k employees
  17. 17
    St George's University Hospitals NHS Foundation Trust· London, England, United Kingdom
    • 4.9k employees
  18. 18
    Cygnet· London, England, United Kingdom
    • 4.7k employees
    • Founded 1988
  19. 19
    Great Ormond Street Hospital for Children NHS Foundation Trust· London, England, United Kingdom
    • 3.9k employees
  20. 20
    South London and Maudsley NHS Foundation Trust· London, England, United Kingdom
    • 3.9k employees
    • Founded 1999
  21. 21
    Central and North West London NHS Foundation Trust· London, England, United Kingdom
    • 3.8k employees
    • Founded 2002
  22. 22
    East London NHS Foundation Trust· London, England, United Kingdom
    • 3.7k employees
    • Founded 2000
  23. 23
    CareTech· Uxbridge, England, United Kingdom
    • Private equity
    • 3.6k employees
    • Founded 1993
  24. 24
    Chelsea and Westminster Hospital NHS Foundation Trust· London, England, United Kingdom
    • 3.5k employees
    • Founded 1993
  25. 25
    UK Health Security Agency· London, England, United Kingdom
    • 3.4k employees
    • Founded 2021

Find engineers at Healthtech companies in London

London has long been a hub for Healthtech, and the list above ranks the largest Healthtech companies headquartered there by current headcount, drawn from public LinkedIn and Crunchbase records. With 4,176 matching companies in our index, this is a good map of where the Healthtech talent in Londonlives — useful whether you’re recruiting, partnering, or sizing a market.

The biggest Healthtech 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 Healthtech engineers in Londonhiring senior staff” or “founders of Healthtech 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 Healthtech 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: Thu, 07 May 2026 06:56:50 GMT

Need an even more specific search?

Refolk runs natural-language searches across LinkedIn, GitHub, and the open web. Try one of these:

Related lists

See all company lists.

Or zoom out