| # | Company | Employees |
|---|---|---|
| 1 |
NHSwww.nhs.uk
It provides comprehensive healthcare services to UK residents, employing over 1.5 million staff and ensuring free access at the point of use. |
252,871 |
| 2 | 32,618 | |
| 3 |
Boots UKboots.jobs
Leading UK pharmacy-led retailer offering health, beauty products & care services through retail stores, digital platforms, and exclusive brands for over 170 years |
27,869 |
| 4 |
Bupa UKbupa.co.uk
International healthcare company dedicated to helping people live longer, healthier, happier lives by providing quality healthcare services to over 38 million customers worldwide |
20,537 |
| 5 |
Liverpool University Hospitals NHS Foundation Trustuhliverpool.nhs.uk
Provides general hospital, specialist, cancer, dental, and community healthcare services, including major trauma care for Cheshire and Merseyside. |
13,000 |
| 6 |
Guy's and St Thomas'β NHS Foundation Trustguysandstthomas.nhs.uk
Provides high-quality healthcare services, clinical excellence, research, and community care through multiple hospitals and partnerships in London. |
11,655 |
| 7 |
Barts Health NHS Trustbartshealth.nhs.uk
Managing five London hospitals including specialist heart and cancer services while providing safe quality medical care for diverse and deprived local communities. |
10,093 |
| 8 |
Ariana Pharmacyarianapharmacy.co.uk
The company provides convenient services to simplify the process of obtaining medication |
9,207 |
| 9 |
Nuffield Healthnuffieldhealth.com
Leading UK not-for-profit healthcare organization, investing all income back into hospitals, fitness clubs, and wellbeing services to build a healthier nation. |
9,066 |
| 10 |
NHS Greater Glasgow and Clydenhsggc.scot
Provider of NHS health care services serving 12 million people in Glasgow and half of Scotland's population, with 25 hospitals and a Β£842m investment program |
7,466 |
| 11 |
Imperial College Healthcare NHS Trustimperial.nhs.uk
Delivers acute and specialist medical care, conducts biomedical research, and provides clinical education for healthcare professionals across five London hospital sites. |
7,248 |
| 12 |
Manchester University NHS Foundation Trustmft.nhs.uk
A large UK acute Trust with nine hospitals providing comprehensive general to highly specialized services to 750,000 people in Manchester and Trafford |
7,150 |
| 13 |
NHS Lothiannhslothian.scot
Provider of primary, community-based, and acute hospital services in Edinburgh and surrounding areas, offering comprehensive healthcare to local populations |
7,007 |
| 14 |
Leeds Teaching Hospitals NHS Trustleedsth.nhs.uk
One of Europe's largest acute hospital trusts in Leeds, providing healthcare, specialist services, training, research, and pioneering treatments with 20,000 employees |
6,812 |
| 15 |
esteticaesteticaa.co.uk
A Surrey-based private dentist offers affordable cosmetic dentistry, botox, and laser treatments in a safe and relaxing environment |
6,661 |
| 16 |
Spire Healthcare Group plcspirehealthcare.com
Leading provider of private healthcare services operating 38 hospitals and over 50 clinics, consulting rooms, and medical centres in the UK. |
6,621 |
| 17 |
King's College Hospital NHS Foundation Trustkch.nhs.uk
A large and busy Trust providing care to 1 million people, with a commitment to excellence and a global reach strategy in place |
6,425 |
| 18 |
Barchester Healthcarejobs.barchester.com
Operate over 260 care homes and six hospitals across the UK, delivering high-quality, person-centred care to thousands daily. |
5,859 |
| 19 |
Care UKcareuk.com
Award-winning provider of care services, specializing in supporting over 7,000 individuals to live active and fulfilling lives in safe, comfortable environments |
5,843 |
| 20 |
Circle Health Groupcirclehealthgroup.co.uk
Operates UK's largest private hospital group, providing over 500 treatments across 60 specialties with personalized patient care and expert consultants. |
5,791 |
| 21 |
Royal Free London NHS Foundation Trustroyalfree.nhs.uk
A leading London NHS Trust providing high-quality healthcare across three hospitals, focusing on clinical excellence, research, and patient-centered care |
5,782 |
| 22 |
University College London Hospitals NHS Foundation Trustuclh.nhs.uk
Provides acute and specialist medical services across six London hospitals, focusing on patient care, education, and biomedical research. |
5,737 |
| 23 |
University Hospitals Birmingham NHS Foundation Trustuhb.nhs.uk
Operates large teaching hospitals, providing comprehensive medical care, specialist treatments, and trauma services for millions regionally and internationally, with a focus on staff development. |
5,525 |
| 24 |
Priorypriorygroup.com
A leading provider of behavioral care in the UK and internationally, offering healthcare, education, and care services for over 30,000 people annually |
5,504 |
| 25 |
Pets at Homepetsathome.com
Leading UK petcare retailer with stores, grooming salons, veterinary practices, and dedicated colleagues focused on animal welfare and customer service. |
5,381 |
| 26 |
Oxford University Hospitals NHS Foundation Trustouh.nhs.uk
A world-renowned NHS teaching trust with four hospitals in Oxford, providing clinical services, specialist care, medical education, training, and research |
5,379 |
| 27 |
St John Ambulancesja.org.uk
Provides first aid training and emergency support in communities and workplaces across England, focusing on saving lives during critical moments. |
5,297 |
| 28 |
Cambridge University Hospitals NHS Foundation Trustcuh.nhs.uk
A leading healthcare provider delivering general, specialist, women's, and maternity care, known for biomedical research, academic health science, and innovative healthcare solutions |
5,288 |
| 29 |
St George's University Hospitals NHS Foundation Truststgeorges.nhs.uk
Large healthcare provider offering acute, specialist, community hospital care, and extensive community services including education and medical research. |
4,910 |
| 30 |
Belfast Health and Social Care Trustbelfasttrust.hscni.net
Delivering integrated health and social care services to 340,000 people in Belfast and throughout Northern Ireland, with a focus on improving health and reducing inequalities |
4,902 |
| 31 |
Cygnetcygnetgroup.com
Providing health and social care services for individuals with mental health needs, brain injuries, eating disorders, autism, and learning disabilities in the UK. |
4,847 |
| 32 |
HC-Onehc-one.co.uk
Provider of professional residential, nursing, and dementia care for older people across England, Scotland, and Wales, focusing on kindness and making a positive impact in communities |
4,840 |
| 33 |
NHS Grampiannhsgrampian.org
Providing comprehensive healthcare services and public health management for half a million people across urban and rural Grampian communities. |
4,588 |
| 34 |
University Hospital Southampton NHS FTcareers.uhs.nhs.uk
Innovative healthcare provider specializing in a wide range of services, pioneering medical research, and prioritizing patient-centered care with a commitment to staff development |
4,517 |
| 35 |
Sheffield Teaching Hospitals NHS Foundation Truststh.nhs.uk
A leading NHS foundation trust in Sheffield providing comprehensive hospital and community services, specializing in cancer, spinal injuries, renal, and cardiothoracic care |
4,301 |
| 36 |
University Hospitals of Leicester NHS Trustuhleicester.nhs.uk
A healthcare organization in Leicester focused on providing top-quality care to the community, earning trust and recognition as #TeamUHL |
4,291 |
| 37 |
Vision Expressvisionexpresscareers.com
Leading optical retailer with over 30 years of experience, offering high-quality eyecare and eyewear products from top brands worldwide |
4,262 |
| 38 |
North London NHS Foundation Trustnorthlondonmentalhealth.nhs.uk
Providing community-based and inpatient mental health care services across North London boroughs, supporting local and wider populations. |
3,983 |
| 39 |
Nottingham University Hospitals NHS Trustnuh.nhs.uk
Large healthcare provider, offering specialist medical services in stroke, renal, neurosciences, cancer, and trauma. Also a leader in medical research and education. |
3,965 |
| 40 |
South London and Maudsley NHS Foundation Trustslam.nhs.uk
Provider of extensive mental health and substance misuse services, combining clinical care, research, and training in South London. |
3,947 |
| 41 |
Great Ormond Street Hospital for Children NHS Foundation Trustgosh.nhs.uk
National centre providing specialist healthcare for children with complex, rare, and congenital conditions, focusing on research and teaching partnerships. |
3,938 |
| 42 |
Central and North West London NHS Foundation Trustcnwl.nhs.uk
Integrated healthcare provider in Central and North West London, also serving Milton Keynes, Surrey, and beyond Offers diverse services for various health needs |
3,898 |
| 43 |
East London NHS Foundation Trustelft.nhs.uk
Provider of mental health care, innovation, and improvement services in East London and beyond Earning awards and striving for excellence |
3,749 |
| 44 |
Boots Opticiansboots.com
Providing extensive eyecare services and a wide range of designer glasses and contact lens plans across numerous UK stores. |
3,710 |
| 45 |
CareTechcaretech-uk.com
National provider of support for individuals with Autism, Learning Disabilities, Mental Health, and neurological conditions through residential care and in-home services across the UK |
3,695 |
| 46 |
mydentist (UK)mydentist.co.uk
Europe's largest dental care provider with nearly 600 practices, 3000 clinicians, and over 6000 employees, offering high-quality dental care to millions of patients |
3,643 |
| 47 |
Frimley Health NHS Foundation Trustcareers.fhft.nhs.uk
A leading healthcare provider serving a population of 900,000, offering exceptional hospital services, specialized treatments, outpatient clinics, and strong community connections |
3,626 |
| 48 |
University Hospitals Coventry and Warwickshire (UHCW) NHS Trustuhcw.nhs.uk
This company is one of the largest acute teaching hospitals in the UK, offering major advances in patient care, clinical teaching, and innovation |
3,622 |
| 49 |
Maidstone and Tunbridge Wells NHS Trustmtw.nhs.uk
A large acute hospital trust in the south east of England, providing general and specialist care to over 560,000 people |
3,543 |
| 50 |
Chelsea and Westminster Hospital NHS Foundation Trustchelwest.nhs.uk
A NHS Foundation Trust running two hospitals and community services, providing outstanding healthcare to a million people with innovative outreach programs |
3,504 |
| 51 |
Mencapmencap.org.uk
A UK charity working to improve the quality of life for individuals with learning disabilities, advocating for their rights and well-being |
3,274 |
| 52 |
NELFT NHS Foundation Trustnelft.nhs.uk
Extensive integrated community and mental health services across London boroughs, Essex, Kent, and Medway for all age groups. |
3,135 |
| 53 |
University Hospitals Bristol and Weston NHS Foundation Trustuhbw.nhs.uk
A large NHS Trust in South West England providing a wide range of clinical services, committed to delivering excellent care and innovative research |
3,121 |
| 54 |
Cardiff and Vale University Health Boardcavuhb.nhs.wales
Healthcare provider offering a wide range of services to a local population of 500,000, with over 100 specialist services for the region and beyond |
3,110 |
| 55 |
Oxford Health NHS Foundation Trustoxfordhealth.nhs.uk
Provider of physical, mental health, and social care across multiple regions, with a focus on community-based services, research, and collaborations with universities |
3,054 |
| 56 |
Norfolk and Norwich University Hospitals NHS Foundation Trustnnuh.nhs.uk
Large teaching hospital providing specialist medical services, training health professionals, conducting research, and serving over 800,000 patients regionally and beyond. |
2,987 |
| 57 |
Elysium Healthcareelysiumhealthcare.co.uk
Innovative healthcare provider putting patients at the center of hospital life, involving staff, patients, and stakeholders in shaping care |
2,967 |
| 58 |
LNT Grouplntcaredevelopments.co.uk
Group of companies operating in care homes, construction, software, industrial products, and racing, focusing on quality and innovation. |
2,939 |
| 59 |
The Royal Marsden NHS Foundation Trustroyalmarsden.nhs.uk
Cancer diagnosis, treatment, research, and education, operating two hospitals in London and Surrey, and partnering with The Institute of Cancer Research. |
2,930 |
| 60 |
Mersey and West Lancashire Teaching Hospitals NHS Trustmerseywestlancs.nhs.uk
Healthcare services provider with hospitals in Whiston, Southport, St Helens, Ormskirk, and Newton, in addition to community and primary care services |
2,925 |
| 61 |
East Kent Hospitals University NHS Foundation Trustekhuft.nhs.uk
Leading hospital trust in England with five hospitals and community clinics, providing specialist services for a population of 759,000 Focused on high-quality care, research, and education |
2,887 |
| 62 |
Royal Devon University Healthcare NHS Foundation Trustroyaldevon.nhs.uk
A healthcare organization offering top-quality care to a population of 615,000, with state-of-the-art equipment, support for professional development, and a nurturing, family-like work environment |
2,865 |
| 63 |
Somerset NHS Foundation Trustsomersetft.nhs.uk
Provider of community, mental health, and acute hospital services in Somerset Awarded Mental Health Trust of the Year in 2021 |
2,864 |
| 64 |
Turning Pointturning-point.co.uk
A social enterprise that provides health and social care services to empower individuals in making positive life choices and improving their wellbeing |
2,829 |
| 65 |
Voyage Care Ltdvoyagecare.com
Provides person-centred care and support for individuals with disabilities and mental health needs across various living and community settings. |
2,787 |
| 66 |
Helping Hands Home Carehelpinghandshomecare.co.uk
A leading provider of live-in care services in England & Wales, offering quality home care for independence, comfort, companionship, and support |
2,781 |
| 67 |
Change Grow Livechangegrowlive.org
A health and social care charity supporting individuals facing various challenges such as drugs, alcohol, housing, justice, and wellbeing |
2,774 |
| 68 |
Reading Hospitaltowerhealth.org
A flagship acute care hospital offering top-tier specialty care centers, recognized for quality outcomes and clinical expertise, with national accolades |
2,750 |
| 69 |
sk:nsknclinics.co.uk
Specialist skin care clinics across the UK, offering expert Dermatologists and practitioners to help achieve better skin through personalized treatments |
2,744 |
| 70 |
London Ambulance Service NHS Trustlondonambulance.nhs.uk
This company is the busiest emergency ambulance service in the UK, providing free emergency and urgent healthcare in London |
2,724 |
| 71 |
Mersey Care NHS Foundation Trustmerseycare.nhs.uk
Specialist mental health, addiction, learning disability, and community health services provider in North West England, focusing on quality, recovery, and wellbeing |
2,712 |
| 72 |
Bluebird Carebluebirdcare.co.uk
Established in 2004, we are a leading provider of home care services in the UK, offering personalized support for people of all ages with various needs |
2,686 |
| 73 |
Royal Berkshire NHS Foundation Trustroyalberkshire.nhs.uk
A leading NHS foundation trust in Berkshire providing high-quality acute medical, surgical, and outpatient services to half a million patients annually |
2,680 |
| 74 |
Lewisham and Greenwich NHS Trustlewishamandgreenwich.nhs.uk
Healthcare provider serving over 666,000 people across three boroughs, offering quality care, innovative services, and support for staff well-being and development |
2,668 |
| 75 |
West London NHS Trustwestlondon.nhs.uk
Provider of diverse mental health, physical health, and social care services in the UK, serving 800,000 residents with a staff of 4,000 |
2,648 |
| 76 |
Bluebird Care Rochdalebluebirdcare.co.uk
Providing quality services in the local community, it is an honor and privilege to serve |
2,640 |
| 77 |
Oxleas NHS Foundation Trustoxleas.nhs.uk
A successful healthcare provider offering integrated mental health, learning disabilities, and community services in South East London, Kent, and other counties |
2,638 |
| 78 |
University Hospitals Sussex NHS Foundation Trustuhsussex.nhs.uk
A leading acute trust in the UK providing diverse clinical services to the population in Sussex area, with seven hospitals and a large workforce |
2,621 |
| 79 |
HCA Healthcare UKhcahealthcare.co.uk
Providing healthcare through award-winning hospitals, urgent care centres, outpatient clinics, and GP practices with advanced technology and expert staff. |
2,598 |
| 80 |
Barking, Havering and Redbridge University Hospitals NHS Trustbhrhospitals.nhs.uk
The company operates two main hospitals serving a population of 700,000, as well as clinics across outer north east London |
2,579 |
| 81 |
University Hospitals of Derby and Burton NHS Foundation Trustuhdb.nhs.uk
A healthcare provider formed in 2018, merging five hospitals to deliver high-quality care to patients in southern Derbyshire and south east Staffordshire |
2,572 |
| 82 |
Hampshire and Isle of Wight Healthcare NHS Foundation Trusthiowhealthcare.nhs.uk
Providing community and mental health services supporting families, children, older adults, and promoting health through coordinated care and partnerships. |
2,568 |
| 83 |
Sue Rydersueryder.org
providing personalized support and care for people approaching end of life or living with grief, ensuring no one faces it alone |
2,525 |
| 84 |
Lifeways Grouplifeways.co.uk
Lifeways provides tailored support for adults with diverse needs, including disabilities and mental health conditions, helping them live independently in the community |
2,506 |
| 85 |
Northern Care Alliance NHS Foundation Trustnortherncarealliance.nhs.uk
A dedicated team of 20,000 staff providing community and hospital services to over one million people, with a focus on saving and improving lives |
2,502 |
| 86 |
Sussex Partnership NHS Foundation Trustsussexpartnership.nhs.uk
Specialist provider of NHS mental health, learning disability, and care home services in southeast England, offering a forward-thinking work environment and beautiful living location Follow our socials |
2,489 |
| 87 |
BMI Healthcarecirclehealthgroup.co.uk
Operates as the UK's largest private hospital group, offering over 500 treatments across 60 specialties with a strong focus on patient-centered care and clinical excellence. |
2,476 |
| 88 |
IVC Evidensiaivcevidensia.com
Global veterinary group providing comprehensive animal health services focused on improving animal well-being and owner satisfaction worldwide. |
2,471 |
| 89 |
Tees, Esk and Wear Valleys NHS Foundation Trust (TEWV)tewv.nhs.uk
A mental health and learning disability NHS Trust providing education, prevention, crisis care, and specialist services to improve mental health in the region |
2,469 |
| 90 |
Birmingham Women's and Children's Hospital and Charitybwc.nhs.uk
A global leader in women's and pediatric healthcare, specializing in advanced treatments, complex surgeries, and innovative research and development Visit website for more information |
2,457 |
| 91 |
North West Ambulance Service NHS Trustnwas.nhs.uk
The company provides ambulance and pre-hospital care services in North West England, working to minimize unnecessary hospital admissions and improve patient care experiences |
2,456 |
| 92 |
NHS Highlandnhshighland.scot.nhs.uk
Delivering quality healthcare services to a large and sparsely populated region in Scotland, focusing on better health outcomes and community impact |
2,447 |
| 93 |
Lancashire Teaching Hospitals NHS Foundation Trustlancsteachinghospitals.nhs.uk
A major NHS trust in Lancashire and South Cumbria providing district general and specialist hospital services, focusing on teamwork, personal development, and innovation in healthcare |
2,422 |
| 94 |
Hywel Dda University Health Boardhduhb.nhs.wales
Healthcare provider in West Wales offering a range of services including acute, primary, community, mental health, and learning disabilities for the local population Contact for recruiting queries |
2,421 |
| 95 |
Practice Plus Grouppracticeplusgroup.com
Passionate about accessible healthcare, offering a wide range of services including Surgery, Diagnostics, General Practice, and innovative health support solutions |
2,408 |
| 96 |
Epsom and St Helier University Hospitals NHS Trustepsom-sthelier.nhs.uk
Providing outstanding daily patient care with a focus on emergencies, part of a hospital group including St George's Trust. |
2,398 |
| 97 |
Hull University Teaching Hospitals NHS Trusthull.nhs.uk
A healthcare provider operating from two main hospitals, with additional services in the community, employing 8,000 staff and serving 1 million patients yearly |
2,396 |
| 98 |
East of England Ambulance Service NHS Trusteastamb.nhs.uk
Provide 24/7 emergency medical treatment and ambulance transport across Bedfordshire, Hertfordshire, Essex, Norfolk, Suffolk, and Cambridgeshire. |
2,390 |
| 99 |
Marie Curie UKmariecurie.org.uk
Providing hospice care, support services, research, and campaigns for terminal illness patients and their families across the UK. |
2,388 |
| 100 |
Northumbria Healthcare NHS Foundation Trustnorthumbria.nhs.uk
Provider of hospital and community health services in Northumberland and North Tyneside, with a focus on emergency care and modern healthcare facilities |
2,349 |
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How this list is built
Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Oct 24, 2026.
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