# The 50 largest research institutes in the United Kingdom
Tamtam tracks 216 research institutes headquartered in the United Kingdom. This list ranks the 50 largest by number of employees on LinkedIn, led by UCL, University of Oxford and King's College London. Their median headcount is 6,635. Half of them were founded in 1895 or later. The most common headquarters are London (8), Birmingham (2) and Cambridge (2).
This list comprises the largest research institutes in the United Kingdom, predominantly universities. These are large organizations dedicated to higher education and research services. Noteworthy institutions include University of Oxford, a leading university fostering innovation; Imperial College London, specializing in science, medicine, engineering, and business; and The University of Manchester, known for teaching excellence and research innovation.
A significant pattern in the data is the concentration of these large research institutions in major cities across the UK, with several prominent universities located in London, such as UCL, King's College London, and Imperial College London. Other major hubs include Oxford, Cambridge, and Edinburgh.
π¬π§ United Kingdom Β· 50 companies Β· Updated Nov 12, 2026
| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [UCL](https://www.tamtam.ai/c/ucl) (ucl.ac.uk)
Leading multidisciplinary university in London, promoting academic excellence, inclusive education, and impactful research addressing real-world challenges. | Research Services | π¬π§ London | 24,678 | |
| 2 | [University of Oxford](https://www.tamtam.ai/c/university-of-oxford) (ox.ac.uk)
A leading university in various academic disciplines, fostering innovation, entrepreneurship, and social support while upholding respect and banning hate speech | Higher Education | π¬π§ Oxford | 23,103 | 1096 |
| 3 | [King's College London](https://www.tamtam.ai/c/king-s-college-london) (kcl.ac.uk)
Top-ranked university offering world-class education and research, fostering innovation and positive societal impact globally and locally. | Research Services | π¬π§ London | 20,705 | |
| 4 | [University of Cambridge](https://www.tamtam.ai/c/university-of-cambridge) (cam.ac.uk)
A leading research university with 31 Colleges and over 150 departments, faculties, and schools, focused on excellence in education and research | Research Services | π¬π§ Cambridge | 20,304 | |
| 5 | [The University of Manchester](https://www.tamtam.ai/c/the-university-of-manchester) (manchester.ac.uk)
A prestigious university known for teaching excellence, research innovation, and a history of world firsts, with a large global alumni community | Higher Education | π¬π§ Manchester | 20,294 | 1824 |
| 6 | [Imperial College London](https://www.tamtam.ai/c/imperial-college-london) (imperial.ac.uk)
Leading university specializing in science, medicine, engineering, and business, fostering interdisciplinary collaboration to advance knowledge and improve health. | Research Services | π¬π§ London | 18,233 | 1907 |
| 7 | [The University of Edinburgh](https://www.tamtam.ai/c/the-university-of-edinburgh) (ed.ac.uk)
A world-leading university offering globally recognized teaching, research, and innovation for over 425 years, unlocking the potential of students worldwide | Research Services | π¬π§ Edinburgh | 16,057 | 1583 |
| 8 | [University of Birmingham](https://www.tamtam.ai/c/university-of-birmingham) (birmingham.ac.uk)
A prestigious university with a century-long tradition of innovation and impactful research, shaping great minds and pushing boundaries of knowledge | Higher Education | π¬π§ Birmingham | 14,952 | 1900 |
| 9 | [University of Leeds](https://www.tamtam.ai/c/university-of-leeds) (leeds.ac.uk)
A top research university in the UK with a focus on creating knowledge, educating students, and making a positive impact through research and innovation | Higher Education | π¬π§ Leeds | 14,683 | 1904 |
| 10 | [University of Nottingham](https://www.tamtam.ai/c/university-of-nottingham) (nottingham.ac.uk)
A pioneering university with campuses in the UK, China, and Malaysia that aims to transform the lives of its 45,000 students | Higher Education | π¬π§ Nottingham | 12,740 | 1948 |
| 11 | [University of Glasgow](https://www.tamtam.ai/c/university-of-glasgow) (gla.ac.uk)
The company focuses on conducting cutting-edge research, providing a student-centered learning environment, and contributing to Scottish culture, the environment, and the economy | Higher Education | π¬π§ Glasgow | 11,990 | |
| 12 | [The University of Sheffield](https://www.tamtam.ai/c/the-university-of-sheffield) (sheffield.ac.uk)
A leading Russell Group university with a diverse community of students and staff, advancing research, partnerships, and global impact in various industries | Higher Education | π¬π§ Sheffield | 11,417 | 1905 |
| 13 | [University of Liverpool](https://www.tamtam.ai/c/university-of-liverpool) (liverpool.ac.uk)
A renowned research and innovation center that attracts global students, experts, and partners, shaping lives and the world through collaborations | Higher Education | π¬π§ Liverpool | 10,897 | |
| 14 | [University of Southampton](https://www.tamtam.ai/c/university-of-southampton) (southampton.ac.uk)
A prestigious university in southern England, ranked among the top 100 worldwide and a founding member of the Russell Group | Higher Education | π¬π§ Southampton | 10,786 | 1862 |
| 15 | [University of Exeter](https://www.tamtam.ai/c/university-of-exeter) (exeter.ac.uk)
A leading research-intensive university in the South West of England, offering a diverse range of subjects in a welcoming international environment | Higher Education | π¬π§ Exeter | 10,489 | 1955 |
| 16 | [Newcastle University](https://www.tamtam.ai/c/newcastle-university) (ncl.ac.uk)
Research-intensive university, world-class reputation in medicine, science, engineering, social sciences, humanities; providing excellent research-led teaching for high graduate employment rates. | Higher Education | π¬π§ Newcastle upon Tyne | 10,332 | |
| 17 | [University of Warwick](https://www.tamtam.ai/c/university-of-warwick) (warwick.ac.uk)
Leading university with high academic and research standards, consistently making a global impact through its students, alumni, and staff. | Higher Education | π¬π§ Coventry | 10,327 | 1965 |
| 18 | [Cardiff University / Prifysgol Caerdydd](https://www.tamtam.ai/c/cardiff-university-prifysgol-caerdydd) (cardiff.ac.uk)
An ambitious and innovative university committed to providing outstanding education and impactful research, forming global collaborations to fulfill social, cultural, and economic obligations | Higher Education | π¬π§ Cardiff | 9,765 | 1883 |
| 19 | [The London School of Economics and Political Science (LSE)](https://www.tamtam.ai/c/the-london-school-of-economics-and-political-science-lse) (lse.ac.uk)
A leading university specializing in the social sciences, committed to excellence and innovation in research and education | Higher Education | π¬π§ London | 9,613 | 1895 |
| 20 | [The Manchester Metropolitan University](https://www.tamtam.ai/c/the-manchester-metropolitan-university) (mmu.ac.uk)
Provides diverse academic programs, excels in research, promotes social mobility, sustainability, and supports community and business partnerships. | Higher Education | π¬π§ Manchester | 8,837 | 1970 |
| 21 | [Queen Mary University of London](https://www.tamtam.ai/c/queen-mary-university-of-london) (qmul.ac.uk)
A world-leading research university with over 32,000 students from 170+ nationalities, offering 240+ degree programs and recognized for excellent teaching | Higher Education | π¬π§ London | 8,803 | 1785 |
| 22 | [Queen's University Belfast](https://www.tamtam.ai/c/queen-s-university-belfast) (qub.ac.uk)
A renowned university with over 150 years of academic excellence, offering a wide range of degree programs and a strong research focus | Higher Education | π¬π§ Belfast | 7,278 | 1845 |
| 23 | [University of York](https://www.tamtam.ai/c/university-of-york) (york.ac.uk)
A dynamic university conducting groundbreaking research to develop life-saving discoveries and innovative technologies, while inspiring students to think critically and create change | Higher Education | π¬π§ York | 6,993 | 1963 |
| 24 | [University of Bath](https://www.tamtam.ai/c/university-of-bath) (bath.ac.uk)
A leading UK research university dedicated to making a positive impact on the world through innovation, collaboration with industry, and quality education Located in Bath, UK | Higher Education | π¬π§ Bath | 6,784 | 1966 |
| 25 | [University of Leicester](https://www.tamtam.ai/c/university-of-leicester) (linktr.ee)
A leading company focused on discovery, innovation, and research-inspired education, ranked 22nd in the UK, with a commitment to fostering change #CitizensOfChange | Higher Education | π¬π§ Leicester | 6,635 | 1921 |
| 26 | [Durham University](https://www.tamtam.ai/c/durham-university) (durham.ac.uk)
A UK university providing inspiration and opportunities for a successful community, serving as a key hub regionally and nationally Visit website for career opportunities | Higher Education | π¬π§ Durham | 6,609 | 1832 |
| 27 | [University of East Anglia](https://www.tamtam.ai/c/university-of-east-anglia) (uea.ac.uk)
Providing diverse undergraduate and postgraduate education, extensive research facilities, cultural events, and top-quality sports and social amenities on campus. | Higher Education | π¬π§ Norwich | 6,316 | 1963 |
| 28 | [Loughborough University](https://www.tamtam.ai/c/loughborough-university) (lboro.ac.uk)
University providing world-class research, excellent student experience, sporting achievements, and enterprise opportunities across campuses in Leicestershire and London. | Higher Education | π¬π§ Loughborough | 6,315 | 1909 |
| 29 | [Northumbria University](https://www.tamtam.ai/c/northumbria-university) (northumbria.ac.uk)
Research-intensive university fostering innovation, partnerships, and knowledge exchange to empower students and staff for global impact and societal change. | Higher Education | π¬π§ Newcastle upon Tyne | 6,280 | |
| 30 | [Birmingham City University](https://www.tamtam.ai/c/birmingham-city-university) (bcu.ac.uk)
Higher education institution offering practice-led courses, industry partnerships, professional accreditations, real-world experience, and impactful research shaping various sectors. | Higher Education | π¬π§ Birmingham | 6,064 | |
| 31 | [The University of Salford](https://www.tamtam.ai/c/the-university-of-salford) (salford.ac.uk)
Ambitious university with 20,000 students driving local economy and transforming individuals through teaching, research, innovation, and engagement in various fields | Higher Education | π¬π§ Salford | 5,864 | 1967 |
| 32 | [University of Plymouth](https://www.tamtam.ai/c/university-of-plymouth) (plymouth.ac.uk)
Modern university with dynamic culture, high student satisfaction, impactful research, innovation, and commitment to global societal and educational advancement. | Higher Education | π¬π§ Plymouth | 5,745 | 1862 |
| 33 | [University of Portsmouth](https://www.tamtam.ai/c/university-of-portsmouth) (linktr.ee)
Progressive university with a global impact, partnering with industry and government to create a better future through education and innovation | Higher Education | π¬π§ Portsmouth | 5,717 | 1869 |
| 34 | [University of Reading](https://www.tamtam.ai/c/university-of-reading) (reading.ac.uk)
A leading research university in the UK with a focus on sustainability, climate research, and a diverse community of alumni and students | Higher Education | π¬π§ Reading | 5,661 | 1892 |
| 35 | [Anglia Ruskin University](https://www.tamtam.ai/c/anglia-ruskin-university) (aru.ac.uk)
Innovative global university with campuses in UK cities, offering top-ranked courses, industry partnerships, and world-leading research opportunities for students | Higher Education | π¬π§ Cambridge | 5,648 | 1858 |
| 36 | [Swansea University / Prifysgol Abertawe](https://www.tamtam.ai/c/swansea-university-prifysgol-abertawe) (swansea.ac.uk)
Research-led university offering excellent teaching, producing globally recognized research, and contributing to economic growth and community wellbeing. | Higher Education | π¬π§ Swansea | 5,646 | 1920 |
| 37 | [University of Surrey](https://www.tamtam.ai/c/university-of-surrey) (surrey.ac.uk)
Provides diverse undergraduate courses, student support, clubs, and safe accommodation in a vibrant campus environment near London. | Higher Education | π¬π§ Guildford | 5,511 | 1891 |
| 38 | [Cancer Research UK (CRUK)](https://www.tamtam.ai/c/cancer-research-uk-cruk) (cancerresearchuk.org)
Dedicated to cancer research, prevention, diagnosis, and treatment, funded by public donations to improve survival and quality of life. | Non-profit Organizations | π¬π§ London | 5,433 | |
| 39 | [University of Sussex](https://www.tamtam.ai/c/university-of-sussex) (sussex.ac.uk)
University offering diverse, research-informed teaching and learning programs with a focus on creativity, intellectual challenge, and inclusivity. | Higher Education | π¬π§ Brighton | 5,299 | 1961 |
| 40 | [Liverpool John Moores University](https://www.tamtam.ai/c/liverpool-john-moores-university) (ljmu.ac.uk)
A dynamic university in the UK with over 28,000 students from 100 countries offering 250 degree courses, committed to equality and inclusion | Higher Education | π¬π§ Liverpool | 5,262 | 1823 |
| 41 | [City St Georgeβs, University of London](https://www.tamtam.ai/c/city-st-george-s-university-of-london) (city.ac.uk)
An innovative university in London, transforming lives through education, research, and global impact, with strong ties to business and sustainability | Higher Education | π¬π§ London | 5,160 | |
| 42 | [Leeds Beckett University](https://www.tamtam.ai/c/leeds-beckett-university) (leedsbeckett.ac.uk)
A modern professional university in Leeds, focused on student success, innovation, and global impact, with a rich history dating back to 1824 | Higher Education | π¬π§ Leeds | 4,958 | 1824 |
| 43 | [University of Central Lancashire](https://www.tamtam.ai/c/university-of-central-lancashire) (uclan.ac.uk)
A university founded in 1828 with a motto of helping individuals reach their full potential, offering state-of-the-art facilities and world-class education | Higher Education | π¬π§ Preston | 4,879 | 1828 |
| 44 | [Oxford Brookes University](https://www.tamtam.ai/c/oxford-brookes-university) (brookes.ac.uk)
Leading UK university in Oxford offering diverse courses, research, and services to businesses with strong industry links and a focus on innovation and excellence | Higher Education | π¬π§ Oxford | 4,862 | 1865 |
| 45 | [De Montfort University](https://www.tamtam.ai/c/de-montfort-university) (dmu.ac.uk)
University providing inclusive education, career support, sustainability initiatives, and community empowerment to help students achieve professional and personal success. | Higher Education | π¬π§ Leicester | 4,814 | |
| 46 | [University of Aberdeen](https://www.tamtam.ai/c/university-of-aberdeen) (linktr.ee)
A forward-thinking university in Northeast Scotland promotes interdisciplinary approaches to innovation, breaking boundaries and fostering impactful ideas for global change | Higher Education | π¬π§ Aberdeen | 4,723 | 1495 |
| 47 | [University of St Andrews](https://www.tamtam.ai/c/university-of-st-andrews) (st-andrews.ac.uk)
A prestigious university in the UK, ranking top in various guides, offering over 900 degree courses across four faculties and attracting a diverse international community | Higher Education | π¬π§ St Andrews | 4,433 | 1413 |
| 48 | [University of Kent](https://www.tamtam.ai/c/university-of-kent) (kent.ac.uk)
A highly-regarded institution focused on academic programs and research support Learn more at their website | Higher Education | π¬π§ Canterbury | 4,342 | 1965 |
| 49 | [London Business School](https://www.tamtam.ai/c/london-business-school) (london.edu)
Top-ranked business school offering MBA and executive education with global presence, diverse faculty, and extensive alumni network. | Higher Education | π¬π§ London | 4,266 | 1964 |
| 50 | [University of Essex](https://www.tamtam.ai/c/university-of-essex) (essex.ac.uk)
Promoting excellence in education and research, offering research-led teaching and outstanding campus experience Inviting alumni to professional networking opportunities | Higher Education | π¬π§ Essex | 4,158 | 1964 |
## 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 the United Kingdom
- [The largest companies in the United Kingdom](https://www.tamtam.ai/l/largest-companies-united-kingdom) (36,548)
- [Multinational companies in the United Kingdom](https://www.tamtam.ai/l/multinational-companies-united-kingdom) (7,458)
- [Financial services firms in the United Kingdom](https://www.tamtam.ai/l/financial-services-firms-united-kingdom) (3,711)
- [Financial Services companies in the United Kingdom](https://www.tamtam.ai/l/financial-services-companies-united-kingdom) (3,696)
- [Retail chains in the United Kingdom](https://www.tamtam.ai/l/retail-chains-united-kingdom) (3,289)
- [Professional services firms in the United Kingdom](https://www.tamtam.ai/l/professional-services-firms-united-kingdom) (2,706)
- [Software Development companies in the United Kingdom](https://www.tamtam.ai/l/software-development-companies-united-kingdom) (2,600)
- [Manufacturers in the United Kingdom](https://www.tamtam.ai/l/manufacturers-united-kingdom) (2,159)
- [Companies with in-house R&D in the United Kingdom](https://www.tamtam.ai/l/r-and-d-companies-united-kingdom) (1,930)
- [IT Services and IT Consulting companies in the United Kingdom](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-united-kingdom) (1,722)
- [Retail companies in the United Kingdom](https://www.tamtam.ai/l/retail-companies-united-kingdom) (1,596)
- [IT services companies in the United Kingdom](https://www.tamtam.ai/l/it-services-companies-united-kingdom) (1,583)
- [Hotel and hospitality groups in the United Kingdom](https://www.tamtam.ai/l/hospitality-groups-united-kingdom) (1,461)
- [Companies with a mobile app in the United Kingdom](https://www.tamtam.ai/l/companies-with-mobile-app-united-kingdom) (1,411)
- [Consulting firms in the United Kingdom](https://www.tamtam.ai/l/consulting-firms-united-kingdom) (1,298)
- [E-commerce companies in the United Kingdom](https://www.tamtam.ai/l/ecommerce-companies-united-kingdom) (1,246)
- [Hardware manufacturers in the United Kingdom](https://www.tamtam.ai/l/hardware-companies-united-kingdom) (1,239)
- [Family-owned companies in the United Kingdom](https://www.tamtam.ai/l/family-owned-companies-united-kingdom) (1,224)
- [Hospitality companies in the United Kingdom](https://www.tamtam.ai/l/hospitality-companies-united-kingdom) (1,204)
- [Critical infrastructure operators in the United Kingdom](https://www.tamtam.ai/l/critical-infrastructure-operators-united-kingdom) (1,195)
- [Wellness and Fitness Services companies in the United Kingdom](https://www.tamtam.ai/l/wellness-and-fitness-services-companies-united-kingdom) (1,151)
- [Retail Apparel and Fashion companies in the United Kingdom](https://www.tamtam.ai/l/retail-apparel-and-fashion-companies-united-kingdom) (1,085)
- [Subscription businesses in the United Kingdom](https://www.tamtam.ai/l/subscription-businesses-united-kingdom) (1,077)
- [Distributors and wholesalers in the United Kingdom](https://www.tamtam.ai/l/distributors-and-wholesalers-united-kingdom) (1,060)
## The same list elsewhere in United Kingdom
- [Research institutes in England](https://www.tamtam.ai/l/research-institutes-england) (177)
- [Research institutes in London](https://www.tamtam.ai/l/research-institutes-london) (51)
## The same list elsewhere
- [Research institutes in the world](https://www.tamtam.ai/l/research-institutes-in-the-world) (5,686)
- [Research institutes in Europe](https://www.tamtam.ai/l/research-institutes-in-europe) (2,713)
---
Source: https://www.tamtam.ai/l/research-institutes-united-kingdom