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Top Healthtech companies in London

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

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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

    We lead the NHS in England to deliver high quality services for all. Find out more. www.england.nhs.uk

    • 59.9k employees
    • Founded 2012
  2. 2
    Bupa UK· London Area, United Kingdom

    Established in 1947, Bupa's purpose is helping people live longer, healthier, happier lives and making a better world. We are a healthcare company serving millions of customers. With no shareholders, we reinvest profits into providing more and better healthcare for the benefit of current and future customers. For more information, visit www.bupa.co.uk

    • 20.4k employees
    • Founded 1947
  3. 3
    Guy's and St Thomas' NHS Foundation Trust· London, England, United Kingdom

    One of the largest Trusts in the UK, Guy’s and St Thomas’ NHS Foundation Trust comprises five of the UK’s best known hospitals – Guy’s, St Thomas’, Evelina London Children’s Hospital, Royal Brompton and Harefield – as well as community services in Lambeth and Southwark, all with a long history of high quality care, clinical excellence, research and innovation.We work closely with a wide range of health and care partners to deliver the best care to our local population, and we play an active role in the integrated care systems (ICS) in south east and north west London.We have a long tradition of clinical and scientific achievement and – as part of King’s Health Partners – we are one of England’s eight academic health sciences centres (AHSCs), bringing together world-class clinical services, teaching and research.We are rated Good overall by the Care Quality Commission, and have one of the lowest mortality rates in the country.With around 23,900 staff, we are one of the largest employers locally. We aim to reflect the diversity of the local communities we serve and continue to develop new and existing partnerships with local people, patients, neighbouring NHS organisations, local authorities and charitable bodies and GPs.The dedication and skills of our employees lie at the heart of our organisation. We strive to recruit and retain the best staff to ensure that our services are high quality, safe and patient focused.

    • Grant
    • 11.6k employees
    • Founded 1993
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  5. 4
    Barts Health NHS Trust· London, England, United Kingdom

    Barts Health is the largest NHS trust in the country, and one of Britain’s leading healthcare providers. We serve 2.5 million people across east London and manage five hospital sites which are Mile End Hospital, Newham University Hospital, St Bartholomew’s Hospital, The Royal London Hospital and Whipps Cross University Hospital. Our main priority is to ensure we provide safe and quality care for our patients, many of whom come from some of the most diverse and deprived communities in Britain. We offer specialist heart and cancer services at St Bartholomew’s for patients from all over London and provide Community Health Services for Tower Hamlets from Mile End. With 727 beds, The Royal London is one of the UKs largest hospitals and most advanced healthcare facilities. Newham and Whipps Cross are both University hospitals which both serve a diverse community in east London.

    • 10.2k employees
    • Founded 2012
  6. 5
    Nuffield Health· London, England, United Kingdom

    Welcome to Nuffield Health, the UK’s leading not-for-profit healthcare organisation*.As a not-for-profit with no shareholders, we invest all our income back into our family of award-winning 37 hospitals, 114 fitness and wellbeing clubs, healthcare clinics, over 200 workplace wellbeing services, as well as developing flagship collaborations supporting our communities – all to realise our vision to build a healthier nation.What makes us unique is our unrivalled award winning and industry leading network of health and wellbeing services. Only Nuffield Health has the wide-ranging expertise to provide connected care. We attract some of the best people in their specialist fields, who take a personalised approach so we can provide the best possible care and support now and in the future – wherever they are on their journey. All for the public benefit. So, it’s no surprise that we’re trusted by the NHS, Private Medical Insurers, employers and the general public to provide exceptional health and wellbeing services to the nation. We’re committed to our vision of building a healthier nation.Welcome to Nuffield Health. Specialists in you.* Nuffield Health is a Registered Charity. Our objective is to advance, promote and maintain health and healthcare of all descriptions and to prevent, relieve and cure sickness and ill health of any kind, all for the public benefit. Registered Charity Numbers 205533 (England and Wales) and SC041793 (Scotland).

    • Debt
    • 9.2k employees

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 4,318 matching companies in Refolk’s index, this is a good map of where the Healthtech talent in London lives - 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 London hiring senior staff” or “founders of Healthtech companies in London who 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: Wed, 05 Aug 2026 13:09:11 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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The underlying index updates continuously and this page re-renders at least daily. Last refreshed: Wed, 05 Aug 2026 13:09:11 GMT.

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