Top Healthtech companies in London
Companies building software and devices for clinicians, patients, and payers. Filtered to companies headquartered in London.
- IndustryHealthtech
- HQLondon
- Matches4,176
Built from a search like: “Top Healthtech companies in London”
Ranked by current headcount across Healthtech companies headquartered in London. Refreshed daily.
- 1NHS England· London Colney, England, United Kingdom
- 57k employees
- Founded 2012
- 2Bupa UK· London Area, United Kingdom
- Debt
- 21k employees
- Founded 1947
- 3Guy's and St Thomas' NHS Foundation Trust· London, England, United Kingdom
- Grant
- 11.4k employees
- Founded 1993
- 4Barts Health NHS Trust· London, England, United Kingdom
- 9.9k employees
- Founded 2012
- 5Nuffield Health· London, England, United Kingdom
- Debt
- 9.1k employees
- 6Virgin Active· London, England, United Kingdom
- Private equity
- 7.6k employees
- Founded 1999
- 7Imperial College Healthcare NHS Trust· London, England, United Kingdom
- 7.2k employees
- 8London Health Sciences Centre (LHSC)· London, Ontario, Canada
- 7k employees
- 9Spire Healthcare Group plc· London, England, United Kingdom
- Post-IPO equity
- 6.5k employees
- Founded 2007
- 10King's College Hospital NHS Foundation Trust· London, England, United Kingdom
- 6.4k employees
- Founded 1913
- 11Acacium Group· London, England, United Kingdom
- 6k employees
- 12Circle Health Group· London, England, United Kingdom
- 5.7k employees
- Founded 2021
- 13University College London Hospitals NHS Foundation Trust· London, England, United Kingdom
- 5.7k employees
- 14Barchester Healthcare· London, England, United Kingdom
- 5.7k employees
- Founded 1992
- 15GoodLife Fitness· London, Ontario, Canada
- Private equity
- 5.5k employees
- Founded 1979
- 16St John Ambulance· London, England, United Kingdom
- 5.2k employees
- 17St George's University Hospitals NHS Foundation Trust· London, England, United Kingdom
- 4.9k employees
- 18Cygnet· London, England, United Kingdom
- 4.7k employees
- Founded 1988
- 19Great Ormond Street Hospital for Children NHS Foundation Trust· London, England, United Kingdom
- 3.9k employees
- 20South London and Maudsley NHS Foundation Trust· London, England, United Kingdom
- 3.9k employees
- Founded 1999
- 21Central and North West London NHS Foundation Trust· London, England, United Kingdom
- 3.8k employees
- Founded 2002
- 22East London NHS Foundation Trust· London, England, United Kingdom
- 3.7k employees
- Founded 2000
- 23CareTech· Uxbridge, England, United Kingdom
- Private equity
- 3.6k employees
- Founded 1993
- 24Chelsea and Westminster Hospital NHS Foundation Trust· London, England, United Kingdom
- 3.5k employees
- Founded 1993
- 25UK 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
Last refreshed: Thu, 07 May 2026 06:56:50 GMT
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