The best Health companies in London

Period, ovulation and pregnancy tracking app with over 70 million monthly active users.

Gut health and nutrition company running large-scale studies and selling at-home tests and food products.

Messaging and communication software used by NHS GP practices and hospital trusts to talk to patients.

Autolus develops and sells CAR-T cell therapies for cancer, including the approved therapy AUCATZYL.

Home healthcare provider using AI and data to deliver care visits and cut hospital admissions.

Digital-first clinic offering virtual GP, mental health and extended care services to patients across Europe.

Runs clinics offering a full-body scan and same-visit doctor review to spot health risks early.

Women's health platform offering clinician-led GLP-1 weight management plans, blood tests and app-based support.

Fitness app that turns daily steps into a digital currency users can spend on rewards.

Makes cell-free synthetic DNA (dbDNA) at scale for gene therapies and genetic medicines.

Clinical-stage biotech developing next-generation oral and injectable medicines for obesity and cardiometabolic disease.

Digital health platform for remote patient monitoring, clinical research and disease management apps.

AI-driven drug discovery company developing a next-generation menin inhibitor for acute myeloid leukaemia, based in London and Cambridge.

London gene therapy company targeting kidney podocytes to treat diseases such as IgA nephropathy.

Workplace mental health platform offering therapy, coaching and an AI companion called Nova to employees.

Tech-enabled research organisation running faster, fixed-fee clinical trials for biotech and pharma.

Maps the immune system in high resolution from blood samples to guide transplant and cancer treatment decisions.

AI platform that sources, trains and relocates international nurses and doctors for hospitals in the UK, Europe and Gulf.

Online marketplace helping families find and compare care homes and later-life care across the UK.

Curated online marketplace for supplements, wellness tech and health products.

Online platform giving access to psychiatrists, therapists and coaches for ADHD, autism and mental health assessments and care.

Develops antibody therapeutics found in the immune systems of disease-resilient people, using AI on antibody repertoires.

Clinical-stage gene therapy company developing treatments for retinal diseases such as X-linked retinitis pigmentosa.

Builds non-invasive bedside devices that monitor brain blood flow and pressure in critically ill patients.

Compass Pathways is developing COMP360 psilocybin treatment for treatment-resistant depression.

Develops multispecific antibodies that engage gamma delta T cells to treat solid tumour cancers.

Drug discovery company using human extracellular matrix models to develop therapies for fibrosis and solid tumours.

King's College London spinout using hyperspectral imaging and AI to help surgeons see tissue in real time.

Online health clinic for weight loss, men's and women's health, with prescriptions and coaching.

Builds nanopore instruments that sequence full-length proteins one molecule at a time.

Biotech developing long-acting monoclonal antibodies to prevent seasonal flu and other respiratory viruses.

Marketplace and booking infrastructure connecting patients, payers and providers with imaging centres in the UK and US.

Practice management and electronic health record platform for private outpatient healthcare providers.

Develops siRNA medicines that silence disease-causing genes, with programmes in polycythemia vera and high Lp(a).

Cloud platform that connects operating rooms so surgeons can collaborate remotely and hospitals can analyse surgical video and data.

Online clinic providing prescribed treatment and clinical support for weight loss, menopause, hair loss and testosterone therapy.

Biotech developing drugs that improve sleep architecture to treat Alzheimer's, Parkinson's and other neurological disorders.

Care management, rostering and finance software for UK homecare providers.

Workforce platform for care providers covering rotas, payroll, compliance training, agency spend and access to vetted temporary care staff.

HelloSelf matches people with accredited therapists and coaches for online sessions, with an AI companion tool used between sessions.

Mytos runs an automated contract manufacturing service that uses its iDEM robotic platform to produce stem cell derived therapies.

Online dermatology service that prescribes personalised skincare treatments for acne and ageing, delivered by monthly subscription.

Notified body that certifies software and AI medical devices for the EU and UK markets.

Builds Juno, an AI agent that takes on admin work in NHS hospitals to cut delays in patient care.

Workforce scheduling platform that helps NHS GP practices and trusts roster staff and book locum clinicians.

At-home hormone and fertility testing with specialist care for women.

Runs autonomous drone and ground robot delivery of blood samples and medicines between NHS hospitals.

Clinician-founded AI assistant that listens to consultations and writes clinical notes, deployed across NHS trusts and GP surgeries.

Automates GP practice admin such as patient registration, triage and booking for the NHS.

Clinical platform for specialist dental care, running the 32Co orthodontics and Aerox sleep medicine brands.

Airfinity sells AI forecasting and intelligence on infectious and cardiometabolic disease to pharma companies, governments and health bodies.

Care platform for GP practices that combines online consultations with triage, scheduling, document processing and an AI scribe.

Develops gene therapies for neurodegenerative diseases, with its lead candidate AVB-101 in a Phase 1/2 trial for genetic frontotemporal dementia.

Uses AI, genomics and synthetic biology to grow unexplored microbes and find new antibiotics and crop protection compounds.

Uses computational design and protein engineering to create custom antigens for vaccines and active immunotherapies.

AI tool that scans patient records to flag people at risk of cancer and guide doctors to the right tests.

Virtual wards and remote patient monitoring so patients can be cared for at home, used across NHS regions.

Patient engagement platform for NHS trusts that handles appointment communications, self-booking, voice agents and missed-appointment prediction, integrated with hospital patient record systems.

AI that turns unstructured clinical documents into coded, structured data for GP practices, payers and providers.

London oncology drug developer that in-licenses cancer assets and funds them through clinical trials.

Entia makes Liberty, a home finger-prick blood analyser that returns results in minutes and shares them with the patient's healthcare professional.

Develops IgE, IgA and IgG antibody therapeutics for cancer, with lead candidate MOv18 IgE in a Phase Ib trial in platinum-resistant ovarian cancer.

Provides employers with reproductive health benefits covering fertility, menopause, men's health and neurodiversity, including clinical consultations, testing and treatment financing.

Fitness app with on-demand and live workout classes for home, gym and connected equipment, on phones, web and TV platforms.

Telehealth platform connecting people with skin clinicians for personalised, medical grade skincare.

Teleradiology platform that matches scans to subspecialist radiologists and helps hospitals run imaging departments.

API-first diagnostics platform that handles at-home sample collection, lab testing, logistics and biomarker discovery for health companies.

Clinically reviewed mental health video content that enterprises and insurers embed in their own platforms.

Digital mental health platform offering young people online counselling, coaching and peer support, delivered under contracts with health systems and US states.

King's College London spinout developing Lateral CAR-T cell therapies for solid tumours, now in a Phase I/IIa trial.

Federated trusted research environment that lets researchers analyse sensitive health and genomic data without moving it.

Clinical AI for mental health services, handling patient intake, assessment and between-session support.

Medefer runs remote consultant-led outpatient care for NHS trusts and private patients, coordinating any in-person tests through partner sites.

MHRA-registered software that searches GP electronic health records to flag patients who may have rare diseases.

Develops small activating RNA medicines that switch on the body's own genes, with a pipeline starting in genetic medicine.

Makes IRO, an automated closed-system platform for manufacturing cell and gene therapies from R&D through commercial production.

Software that reviews patient records against clinical guidelines to find undiagnosed and under-treated patients.

Workforce software for NHS trusts covering staff banks, rotas, agency management and job planning, built by NHS doctors.

Employer-paid health app giving staff expert support for menopause, fertility, pregnancy, early parenthood and men's health.

Develops engineered bacterial immunotherapies for cancer, led by ZH9 for non-muscle invasive bladder cancer.

Develops engineered CAR-Treg cell therapies for autoimmune disease and organ transplant rejection.

Builds a minimally invasive wearable biosensor that tracks glucose, lactate and other biomarkers in real time.

Weight-loss programme combining medication, nutrition and behaviour change coaching, available privately and free through NHS referral.

Tangram Therapeutics combines computational drug discovery with biology to develop RNAi medicines, led by TGM-312 for MASH liver disease.

At-home blood testing service covering 75+ health markers, with doctor-led insights on results and a dashboard that combines biomarkers with wearable data.

Toothfairy is a dental app that connects patients with UK-registered dentists for remote consultations, aligners and treatment plans.

Surface guided radiation therapy systems that use 3D cameras to position and monitor patients during radiotherapy.