# 50 leading pharmaceutical companies in England

Tamtam tracks 198 pharmaceutical companies headquartered in England. This list ranks the 50 largest by number of employees on LinkedIn, led by GSK, AstraZeneca and Reckitt. Their median headcount is 834. Half of them were founded in 1996 or later. The most common headquarters are London (17), Cambridge (4) and Guildford (2).

This list of pharmaceutical companies in England comprises large, well-established groups and some younger firms. GSK, with 92,092 employees, focuses on advancing healthcare and disease prevention. AstraZeneca, with 79,513 employees, pioneers healthcare transformation through science. Smith+Nephew designs and manufactures medical technologies, while Haleon improves everyday health.

The companies are concentrated in pharmaceutical manufacturing, medical equipment manufacturing, and biotechnology research. A notable pattern is the strong presence of headquarters in London, including Hikma Pharmaceuticals, Convatec, LivaNova, LGC, Accord Healthcare, and ViiV Healthcare, indicating a central hub for the industry.

🇬🇧 England · 50 companies · Updated Nov 12, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [GSK](https://www.tamtam.ai/c/gsk) (gsk.com)<br>Uniting science, technology, and talent to advance healthcare and disease prevention through collaborative innovation and community engagement. | Pharmaceutical Manufacturing | 🇬🇧 London | 92,092 |  |
| 2 | [AstraZeneca](https://www.tamtam.ai/c/astrazeneca) (astrazeneca.com)<br>Pioneering healthcare transformation through the potential of science, impacting individuals, society, and the environment for a healthier future | Pharmaceutical Manufacturing | 🇬🇧 Cambridge | 79,513 |  |
| 3 | [Reckitt](https://www.tamtam.ai/c/reckitt) (reckitt.com)<br>Focus on providing high-quality hygiene, wellness, and nourishment products, aiming for global access and sustainable growth for healthier communities. | Manufacturing | 🇬🇧 Slough | 43,000 |  |
| 4 | [Smith+Nephew](https://www.tamtam.ai/c/smith-nephew) (smith-nephew.com)<br>Design and manufacture medical technologies supporting healthcare professionals to restore patient health and mobility, enhancing performance and quality of life. | Medical Equipment Manufacturing | 🇬🇧 Watford | 19,222 | 1856 |
| 5 | [Haleon](https://www.tamtam.ai/c/haleon) (haleon.com)<br>The company is focused on improving everyday health through a human-centered approach They promote community guidelines for social media interactions #HelloHaleon | Consumer Services | 🇬🇧 London | 18,581 | 2022 |
| 6 | [Hikma Pharmaceuticals](https://www.tamtam.ai/c/hikma-pharmaceuticals) (hikma.com)<br>Manufacturing and supplying over 800 generic, specialty, and branded pharmaceutical products to hospitals, physicians, and pharmacists globally. | Pharmaceutical Manufacturing | 🇬🇧 London | 10,626 | 1978 |
| 7 | [Convatec](https://www.tamtam.ai/c/convatec) (convatecgroup.com)<br>Delivering pioneering and trusted medical solutions focused on improving the lives of patients and healthcare providers worldwide. | Medical Equipment Manufacturing | 🇬🇧 London | 6,954 | 1978 |
| 8 | [LivaNova](https://www.tamtam.ai/c/livanova) (livanova.com)<br>Global medical technology company with advanced technologies and breakthrough treatments focused on improving patient lives worldwide in cardiopulmonary and neuromodulation | Medical Equipment Manufacturing | 🇬🇧 London | 3,545 |  |
| 9 | [LGC](https://www.tamtam.ai/c/lgc) (lgcgroup.com)<br>Global life science tools company providing mission-critical components and solutions in human healthcare and applied markets, with a focus on genomic analysis and quality assurance applications | Biotechnology Research | 🇬🇧 London | 2,500 |  |
| 10 | [Accord Healthcare](https://www.tamtam.ai/c/accord-healthcare) (accord-healthcare.com)<br>Development, manufacturing, and distribution of affordable medicines across over 85 countries, focusing on patient access and healthcare improvement. | Pharmaceutical Manufacturing | 🇬🇧 London | 2,038 |  |
| 11 | [ViiV Healthcare](https://www.tamtam.ai/c/viiv-healthcare) (viivhealthcare.com)<br>A global HIV specialist company focused on researching new medicines and improving access to care for people living with HIV | Pharmaceutical Manufacturing | 🇬🇧 London | 1,960 | 2009 |
| 12 | [Dechra](https://www.tamtam.ai/c/dechra) (dechra.com)<br>Development, manufacture, and sales of high-quality veterinary pharmaceuticals and related products supporting veterinarians worldwide with training and information. | Pharmaceutical Manufacturing | 🇬🇧 Northwich | 1,902 | 1997 |
| 13 | [Abcam](https://www.tamtam.ai/c/abcam) (abcam.com)<br>Innovative company providing essential products and solutions for scientists worldwide to drive research in areas like cancer and neurological disorders | Biotechnology Research | 🇬🇧 Cambridge | 1,880 |  |
| 14 | [PrimeVigilance](https://www.tamtam.ai/c/primevigilance) (primevigilance.com)<br>Leading Pharmacovigilance specialist delivering global solutions for clinical and post-marketing safety, medical information, regulatory support, and quality management services worldwide | Biotechnology Research | 🇬🇧 Guildford | 1,365 | 2008 |
| 15 | [Oxford Nanopore Technologies](https://www.tamtam.ai/c/oxford-nanopore-technologies) (nanoporetech.com)<br>Innovative biotech company developing portable DNA and RNA sequencing technology for real-time data delivery and scalable analysis in over 100 countries worldwide | Biotechnology Research | 🇬🇧 Oxford | 1,352 |  |
| 16 | [ABF Ingredients](https://www.tamtam.ai/c/abf-ingredients) (abfingredients.com)<br>Development and production of specialty ingredients for food, health, pharmaceutical, animal health, and various industrial applications worldwide. | Food and Beverage Services | 🇬🇧 Peterborough | 1,177 | 2003 |
| 17 | [Alloga](https://www.tamtam.ai/c/alloga) (cencora.com)<br>An international healthcare supply chain network providing warehousing, distribution, contract management, packaging, labelling, and support solutions for the industry | Pharmaceutical Manufacturing | 🇬🇧 Weybridge | 1,135 | 1996 |
| 18 | [NextPharma](https://www.tamtam.ai/c/nextpharma) (nextpharma.com)<br>NextPharma is a leading European CDMO partner offering fast, flexible, and personalized solutions for pharmaceutical development and manufacturing in various industries | Pharmaceutical Manufacturing | 🇬🇧 London | 977 | 1946 |
| 19 | [APCER Life Sciences](https://www.tamtam.ai/c/apcer-life-sciences) (apcerls.com)<br>Global provider of drug safety, pharmacovigilance, regulatory services, and risk management programs for pharmaceutical companies worldwide, with expertise in medical writing and quality assurance | Business Consulting and Services | 🇬🇧 London | 943 | 2007 |
| 20 | [OXB](https://www.tamtam.ai/c/oxb) (oxb.com)<br>A viral vector CDMO with 25+ years of experience in gene therapies, enabling clients to deliver life-changing treatments globally | Pharmaceutical Manufacturing | 🇬🇧 Oxford | 940 | 1995 |
| 21 | [Qinecsa Solutions](https://www.tamtam.ai/c/qinecsa-solutions) (qinecsa.com)<br>A global life science partner offering industry-leading pharmacovigilance technology and expert scientific solutions to efficiently manage drug safety data | Pharmaceutical Manufacturing | 🇬🇧 London | 936 | 2006 |
| 22 | [Sterling Pharma Solutions](https://www.tamtam.ai/c/sterling-pharma-solutions) (sterlingpharmasolutions.com)<br>A global organization with 50+ years of experience providing API development and manufacturing services to the pharmaceutical industry, specializing in complex chemistries | Pharmaceutical Manufacturing | 🇬🇧 Dudley | 908 | 1969 |
| 23 | [Eisai EMEA](https://www.tamtam.ai/c/eisai-emea) (eisai.eu)<br>development of innovative medicines addressing high unmet medical needs in oncology and neurology with patient-centered healthcare philosophy | Pharmaceutical Manufacturing | 🇬🇧 Hatfield | 895 |  |
| 24 | [Alliance Medical UK](https://www.tamtam.ai/c/alliance-medical-uk) (alliancemedical.co.uk)<br>Europe's top independent imaging services provider improving imaging processes and patient outcomes for over 20 years with expertise and knowledge | Hospitals and Health Care | 🇬🇧 Warwick | 857 | 1988 |
| 25 | [Healthcare at Home](https://www.tamtam.ai/c/healthcare-at-home) (sciensus.com)<br>A leading healthcare provider delivering clinical care and medication services to patients in their homes across the UK and Europe | Hospitals and Health Care | 🇬🇧 Burton Upon Trent | 834 | 1992 |
| 26 | [Advanced Medical Solutions](https://www.tamtam.ai/c/advanced-medical-solutions) (admedsol.com)<br>Specializing in advanced wound care and closure products, this UK-based company provides innovative and technologically advanced solutions through design, development, and manufacturing services | Medical Equipment Manufacturing | 🇬🇧 Winsford | 830 |  |
| 27 | [Quotient Sciences](https://www.tamtam.ai/c/quotient-sciences) (quotientsciences.com)<br>A drug development and manufacturing accelerator offering integrated programs and tailored services to get drugs to patients faster and more efficiently | Pharmaceutical Manufacturing | 🇬🇧 Nottingham | 811 |  |
| 28 | [Intersurgical](https://www.tamtam.ai/c/intersurgical) (intersurgical.com)<br>Global designer, manufacturer, and supplier of high-quality medical devices for respiratory care, offering solutions for airway management, anaesthesia, critical care, and oxygen therapy | Medical Equipment Manufacturing | 🇬🇧 Wokingham | 790 | 1982 |
| 29 | [Autolus Therapeutics](https://www.tamtam.ai/c/autolus-therapeutics) (autolus.com)<br>Clinical-stage biopharmaceutical company developing next-generation T cell therapies for cancer treatment by engineering targeted and active therapies to eliminate cancer cells | Biotechnology Research | 🇬🇧 London | 755 | 2014 |
| 30 | [ADVANZ PHARMA](https://www.tamtam.ai/c/advanz-pharma) (advanzpharma.com)<br>Global pharmaceutical company providing specialty, hospital, and rare disease medicines through partnerships and direct commercial presence worldwide. | Pharmaceutical Manufacturing | 🇬🇧 London | 734 |  |
| 31 | [Corin Group](https://www.tamtam.ai/c/corin-group) (coringroup.com)<br>Development and provision of advanced orthopaedic products and services designed to improve patient outcomes and implant performance worldwide. | Medical Equipment Manufacturing | 🇬🇧 Cirencester | 724 | 1985 |
| 32 | [ERGOMED](https://www.tamtam.ai/c/ergomed) (ergomedcro.com)<br>Global provider of specialized clinical trial management services in oncology, rare diseases, and complex trials for pharmaceutical and biotech sectors. | Biotechnology Research | 🇬🇧 Guildford | 720 | 1997 |
| 33 | [CMR Surgical](https://www.tamtam.ai/c/cmr-surgical) (cmrsurgical.com)<br>Global medical devices company innovating surgery with Versius robotic system to make minimal access surgery accessible and affordable, redefining surgical robotics market Visit website to learn more | Medical Equipment Manufacturing | 🇬🇧 Cambridge | 664 | 2014 |
| 34 | [Rayner](https://www.tamtam.ai/c/rayner) (rayner.com)<br>Manufacturing and distributing intraocular lenses for cataract surgery with global production facilities and offices in over 80 countries. | Medical Equipment Manufacturing | 🇬🇧 Worthing | 650 | 1910 |
| 35 | [Sygnature Discovery](https://www.tamtam.ai/c/sygnature-discovery) (sygnaturediscovery.com)<br>Integrated drug discovery contract research organization providing services from target identification to candidate nomination across multiple therapeutic areas globally. | Biotechnology Research | 🇬🇧 Nottingham | 640 | 2004 |
| 36 | [Clinigen](https://www.tamtam.ai/c/clinigen) (clinigengroup.com)<br>specialist pharmaceutical services and products platform providing ethical access to medicines, supporting drug development and patient access worldwide | Professional Services | 🇬🇧 London | 633 | 2010 |
| 37 | [Sinclair](https://www.tamtam.ai/c/sinclair) (sinclair.com)<br>global medical aesthetics company providing innovative products and tools to empower clinicians, supporting practice growth and holistic patient care worldwide | Pharmaceutical Manufacturing | 🇬🇧 London | 613 | 1971 |
| 38 | [Veramed](https://www.tamtam.ai/c/veramed) (veramed.co.uk)<br>A customer-focused Clinical Research Organisation offering high-quality biostatistics and programming services for the pharmaceutical industry, with a focus on innovation and service excellence | Research Services | 🇬🇧 London | 609 | 2012 |
| 39 | [Bespak](https://www.tamtam.ai/c/bespak) (bespak.com)<br>A global CDMO specializing in inhaled and nasal drug delivery devices, pharmaceutical products, and drug-device combination products for the pharmaceutical industry | Pharmaceutical Manufacturing | 🇬🇧 Holmes Chapel | 607 | 1959 |
| 40 | [Nutricia UK](https://www.tamtam.ai/c/nutricia-uk) (nutricia.co.uk)<br>Development and provision of science-based nutritional products for dietary management of health conditions from infancy to old age. | Hospitals and Health Care | 🇬🇧 Trowbridge | 603 |  |
| 41 | [Immunocore](https://www.tamtam.ai/c/immunocore) (immunocore.com)<br>A leading biotechnology company developing T cell receptor therapies for oncology, infectious, and autoimmune diseases, focused on addressing unmet patient needs | Biotechnology Research | 🇬🇧 Abingdon | 603 | 2008 |
| 42 | [The Binding Site](https://www.tamtam.ai/c/the-binding-site) (thermofisher.com)<br>Provide diagnostic solutions for blood cancers and immune disorders, supporting clinicians, researchers, and advancing specialized medical diagnostics worldwide. | Medical Equipment Manufacturing | 🇬🇧 Birmingham | 597 |  |
| 43 | [Roche Diagnostics UK & Ireland](https://www.tamtam.ai/c/roche-diagnostics-uk-and-ireland) (roche.co.uk)<br>Development and integration of comprehensive in vitro diagnostic solutions including molecular diagnostics, clinical chemistry, tissue diagnostics, and laboratory automation for healthcare systems. | Hospitals and Health Care | 🇬🇧 Burgess Hill | 573 |  |
| 44 | [Anthony Nolan](https://www.tamtam.ai/c/anthony-nolan) (anthonynolan.org)<br>A non-profit organization connecting donors with blood cancer patients in need of lifesaving stem cell transplants Join the register online to help save lives | Non-profit Organizations | 🇬🇧 London | 564 | 1974 |
| 45 | [o2h discovery](https://www.tamtam.ai/c/o2h-discovery) (o2hdiscovery.co)<br>A pharmaceuticals company based in Ahmedabad, India that specializes in delivering discovery services for the healthcare industry | Research Services | 🇬🇧 Cambridge | 561 | 2005 |
| 46 | [IDEXX LABORATORIES LIMITED](https://www.tamtam.ai/c/idexx-laboratories-limited)<br>A veterinary company based in the United Kingdom that specializes in laboratory services | Veterinary Services | 🇬🇧 Wetherby | 547 |  |
| 47 | [Blatchford](https://www.tamtam.ai/c/blatchford) (blatchfordmobility.com)<br>Innovative manufacturer of advanced prosthetic technology, bespoke seating solutions, and orthotic devices prioritizing health and redefining mobility through science and technology | Medical Equipment Manufacturing | 🇬🇧 Basingstoke | 537 | 1890 |
| 48 | [Biosearch Technologies Oligo Synthesis](https://www.tamtam.ai/c/biosearch-technologies-oligo-synthesis) (lgcgroup.com)<br>The company provides essential tools, reagents, and instruments for developing molecular diagnostic tests, genomics assays, and therapeutics to support product development | Biotechnology Research | 🇬🇧 Hoddesdon | 531 | 1993 |
| 49 | [Alliance Pharmaceuticals Limited](https://www.tamtam.ai/c/alliance-pharmaceuticals-limited) (alliancepharmaceuticals.com)<br>An international healthcare group focusing on marketing consumer healthcare brands and prescription medicines, with a strong financial performance and growth strategy | Retail Health and Personal Care Products | 🇬🇧 Chippenham | 519 | 1996 |
| 50 | [STADA Thornton & Ross](https://www.tamtam.ai/c/stada-thornton-and-ross) (thorntonross.com)<br>Leading pharmaceutical manufacturer with a heritage in pharmacies, offering high-quality prescription and consumer health products while providing attractive career opportunities for employees | Pharmaceutical Manufacturing | 🇬🇧 Huddersfield | 518 | 1922 |

## 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 Nov 12, 2026.

## More company lists in England

- [The largest companies in England](https://www.tamtam.ai/l/largest-companies-england) (32,641)
- [Retail chains in England](https://www.tamtam.ai/l/retail-chains-england) (2,917)
- [Manufacturers in England](https://www.tamtam.ai/l/manufacturers-england) (1,794)
- [Companies with in-house R&D in England](https://www.tamtam.ai/l/r-and-d-companies-england) (1,703)
- [Retail companies in England](https://www.tamtam.ai/l/retail-companies-england) (1,415)
- [Hotel and hospitality groups in England](https://www.tamtam.ai/l/hospitality-groups-england) (1,273)
- [Education providers in England](https://www.tamtam.ai/l/education-companies-england) (1,081)
- [Hardware manufacturers in England](https://www.tamtam.ai/l/hardware-companies-england) (1,067)
- [Wellness and Fitness Services companies in England](https://www.tamtam.ai/l/wellness-and-fitness-services-companies-england) (1,032)
- [Critical infrastructure operators in England](https://www.tamtam.ai/l/critical-infrastructure-operators-england) (1,029)
- [Hospitality companies in England](https://www.tamtam.ai/l/hospitality-companies-england) (1,025)
- [Family-owned companies in England](https://www.tamtam.ai/l/family-owned-companies-england) (1,014)
- [Distributors and wholesalers in England](https://www.tamtam.ai/l/distributors-and-wholesalers-england) (938)
- [Healthcare providers in England](https://www.tamtam.ai/l/healthcare-providers-england) (810)
- [Insurance companies in England](https://www.tamtam.ai/l/insurance-companies-england) (699)
- [Consumer goods companies in England](https://www.tamtam.ai/l/consumer-goods-companies-england) (671)
- [Construction companies in England](https://www.tamtam.ai/l/construction-companies-england) (667)
- [Hospitals and Health Care companies in England](https://www.tamtam.ai/l/hospitals-and-health-care-companies-england) (649)
- [Public sector organisations in England](https://www.tamtam.ai/l/public-sector-organisations-england) (638)
- [Food and beverage companies in England](https://www.tamtam.ai/l/food-and-beverage-companies-england) (635)
- [Food and Beverage Services companies in England](https://www.tamtam.ai/l/food-and-beverage-services-companies-england) (606)
- [Food and Beverage Manufacturing companies in England](https://www.tamtam.ai/l/food-and-beverage-manufacturing-companies-england) (582)
- [Corporate groups and holding companies in England](https://www.tamtam.ai/l/holding-companies-england) (578)
- [Restaurants companies in England](https://www.tamtam.ai/l/restaurants-companies-england) (506)

## The same list elsewhere in United Kingdom

- [Pharmaceutical companies in the United Kingdom](https://www.tamtam.ai/l/pharmaceutical-companies-united-kingdom) (235)
- [Pharmaceutical companies in London](https://www.tamtam.ai/l/pharmaceutical-companies-london) (41)

## The same list elsewhere

- [Pharmaceutical companies in the world](https://www.tamtam.ai/l/pharmaceutical-companies-in-the-world) (5,664)
- [Pharmaceutical companies in Europe](https://www.tamtam.ai/l/pharmaceutical-companies-in-europe) (3,019)

---

Source: https://www.tamtam.ai/l/pharmaceutical-companies-england