| # | Company | Employees |
|---|---|---|
| 1 | 404,207 | |
| 2 |
UK Civil Servicegov.uk
This company implements government policies, delivering essential public services in the UK |
238,504 |
| 3 | 208,511 | |
| 4 | 197,879 | |
| 5 |
Unileverunilever.com
Global purpose-led business, creating well-loved brands that improve lives worldwide Encourages innovation, fosters growth, and believes in business as a force for good |
145,051 |
| 6 |
Vodafonevodafone.com
Using technology to connect people globally, drive social change, and improve lives while emphasizing the importance of humanity and collaboration |
142,740 |
| 7 | 116,486 | |
| 8 | 93,574 | |
| 9 |
ANY Companyany.company
Connect, promote, and find partners with a focus on building stronger connections and faster growth in the global marketplace Tailored solutions for businesses |
93,110 |
| 10 | 92,092 | |
| 11 |
Tescotescoplc.com
Global retailer offering food and fashion through physical stores and online platforms, employing hundreds of thousands across offices, distribution and engagement centers. |
91,023 |
| 12 | 85,000 | |
| 13 |
Barclayshome.barclays
A British universal bank with global presence, offering consumer banking, payments, corporate and investment banking services, supported by technology and operational solutions |
82,417 |
| 14 |
Kingfisher plckingfisher.com
International home improvement company with 1,900 stores across Europe Offering products and services for consumers and trade professionals to create better homes |
80,000 |
| 15 |
AstraZenecaastrazeneca.com
Pioneering healthcare transformation through the potential of science, impacting individuals, society, and the environment for a healthier future |
79,513 |
| 16 |
Standard Charteredsc.com
An international banking group with a presence in 53 markets, driving commerce and prosperity through diversity and values Listed on London and Hong Kong Stock Exchanges |
79,401 |
| 17 |
Avonavonworldwide.com
A pioneering beauty brand focused on empowering women worldwide, offering innovative products and advocating for gender equality and women's health |
75,208 |
| 18 | 73,712 | |
| 19 |
Sainsbury'ssainsburys.jobs
A leading UK retailer with over 1400 stores and a strong digital presence, offering affordable, greener products and convenient financial services to customers |
68,549 |
| 20 | 66,000 | |
| 21 |
Compass Groupcompass-group.com
Provides contract food and support services globally, aiming for world-class standards through great people, service, and results, generating significant revenue. |
61,555 |
| 22 |
NHS Englandengland.nhs.uk
This organization collaborates with NHS Improvement to enhance care delivery, transparency, and services for patients in England while prioritizing efficiency and accountability |
59,120 |
| 23 |
Lloyds Banking Grouplloydsbankinggroup.com
This company focuses on creating a more sustainable and inclusive future in the financial services industry, while supporting customers' changing needs |
57,702 |
| 24 | 55,656 | |
| 25 |
BAE Systemsbaesystems.com
The company provides advanced technology-led defense, aerospace, and security solutions, with a skilled workforce in over 40 countries, focusing on innovation and long-term commitment |
55,143 |
| 26 | 52,216 | |
| 27 |
FCA Fiat Chrysler Automobilesstellantis.com
A leading automaker and mobility provider now known as Stellantis, dedicated to creating innovative transportation solutions for the future |
47,673 |
| 28 | 46,311 | |
| 29 | 43,815 | |
| 30 |
Department for Educationgov.uk
Develop education, training, and social care policies, offer diverse job roles, flexible work, and community involvement opportunities across England. |
43,294 |
| 31 |
Reckittreckitt.com
Focus on providing high-quality hygiene, wellness, and nourishment products, aiming for global access and sustainable growth for healthier communities. |
43,000 |
| 32 | 42,697 | |
| 33 | 41,040 | |
| 34 |
Rio Tintoriotinto.com
Provides essential materials including iron ore, low carbon aluminum, copper, borates, and titanium for various global industries and daily life. |
40,794 |
| 35 |
Marks and Spencerjobs.marksandspencer.com
Global retailer delivering quality products through physical and digital channels while prioritizing innovation and value for millions of customers across the world. |
40,055 |
| 36 |
Royal Maillinktr.ee
Connecting businesses, customers, and communities in the UK by providing universal postal service to over 29 million addresses, aiming to be the best delivery company in Europe |
39,215 |
| 37 | 37,600 | |
| 38 |
John Lewis Partnershipjlpjobs.com
Employee-owned business operating department stores and supermarkets focused on quality service, retail innovation, and shared responsibility among partners for collective success and growth. |
36,517 |
| 39 |
Virginvirgin.com
A global investment group with diverse companies in travel, health, entertainment, telecommunications, and space, focused on customer experience and sustainability. |
36,222 |
| 40 | 36,000 | |
| 41 | 35,346 | |
| 42 |
Morrisonsmorrisons.jobs
A team-focused company providing shopping trips, career opportunities, fresh food, and great value for customers, while prioritizing community partnerships and employee well-being |
34,861 |
| 43 |
JD Sports Fashioncareers.jdplc.com
A global retailer and distributor of branded sportswear and fashionwear, with stores across Europe, North America, and Asia Pacific |
34,337 |
| 44 |
Diageodiageo.com
Global leader in premium drinks, with over 200 brands sold in 180 countries Committed to sustainability, innovation, and excellence worldwide |
34,137 |
| 45 |
British Armymod.uk
The British Army offers opportunities for personal growth, adventure, training, and camaraderie, with a focus on making a difference and building lifelong bonds |
34,120 |
| 46 |
Department for Work and Pensions (DWP)gov.uk
The company is responsible for welfare, pensions, child maintenance, and benefits, aiming to reduce poverty, promote work, and ensure financial security for all |
33,465 |
| 47 | 32,618 | |
| 48 |
Hayshaysplc.com
Specialist recruitment and workforce solutions provider offering advisory services, career transitions, and employer brand positioning, with a focus on empowering people and businesses to succeed globally |
31,854 |
| 49 |
Rolls-Roycerolls-royce.com
Engineering excellence driving critical technologies for air, sea, and land, powering, protecting, and connecting people worldwide. |
31,649 |
| 50 |
Intertekintertek.com
A global provider of Total Quality Assurance solutions, offering Testing, Inspection, Certification services to industries worldwide through a vast network of labs and offices |
31,152 |
| 51 |
UK Ministry of Defencegov.uk
The company works to protect the security and interests of the United Kingdom, providing necessary training, equipment, and support for the Armed Forces |
30,901 |
| 52 |
CHANELchanel.com
A global leader in luxury product creation, CHANEL offers a wide range of high-end fashion, accessories, fragrances, skincare, and more |
30,431 |
| 53 |
Nothingnothing.tech
London-based tech company building smartphones and audio equipment with iconic design and intuitive engineering as an alternative to established industry giants. |
29,964 |
| 54 |
Imperial Brands PLCimperialbrandsplc.com
An innovative global FMCG business with inclusive culture, focused on tobacco harm reduction, sustainability, and strong international brands |
29,000 |
| 55 |
Network Railnetworkrail.co.uk
Managing and modernising Britain's railway infrastructure to ensure safe, reliable transport for passengers and freight, supporting economic growth. |
28,033 |
| 56 |
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 |
| 57 |
Coca-Cola Europacific Partnerscocacolaep.com
This multinational company produces, distributes, and sells popular drink brands in Europe, Australia, Indonesia, and the Pacific region |
27,236 |
| 58 |
HM Revenue & Customsgov.uk
UK's tax, payments, and customs authority, collecting funds for public services, providing financial support, ensuring tax compliance, and combating fraudulent activities |
26,882 |
| 59 |
Anglo Americanangloamerican.com
Global mining company producing essential metals and minerals with a focus on sustainability, innovation, and community value creation. |
26,768 |
| 60 | 26,193 | |
| 61 |
Nextcareers.next.co.uk
Leading British retailer specializing in furniture production and technology development while fostering an innovative environment for warehouse teams and software engineering experts. |
26,161 |
| 62 |
TechnipFMCtechnipfmc.com
A leading technology provider in the energy industry, offering integrated projects and services to develop energy resources while prioritizing sustainability |
25,875 |
| 63 |
Capitacapita.com
A leading provider of business services using data, technology, and people to simplify connections between governments, citizens, businesses, and customers |
25,581 |
| 64 | 25,298 | |
| 65 |
Balfour Beatty plcbalfourbeatty.com
A global infrastructure group with 25,000 employees delivering innovative and efficient transportation, power, building, and utility systems for economic growth and community support |
25,000 |
| 66 |
Edutechartbees.co.uk
A London-based company is an official Google for Education Partner, offering implementation, configuration, training, and support for Chromebooks and G Suite |
24,990 |
| 67 |
Kantarkantar.com
Global leader in marketing data and analytics with deep expertise, innovative technology, and insights to help clients understand people and drive growth worldwide |
24,976 |
| 68 | 24,678 | |
| 69 |
Mott MacDonaldmottmac.com
The company focuses on improving society through digital innovation, excellence, and solving intricate challenges with clients to deliver better outcomes |
24,653 |
| 70 |
British Councilbritishcouncil.org
Building global connections through arts, education, English language learning, and qualifications to empower individuals and foster international understanding. |
24,510 |
| 71 |
Department for Culture, Media and Sportcivil-service-careers.gov.uk
Supporting culture, arts, media, sport, tourism, and civil society in England, championing sports and cultural industries, enhancing community cohesiveness Governed by the Department for Culture, Media and Sport |
24,000 |
| 72 |
University of Oxfordox.ac.uk
A leading university in various academic disciplines, fostering innovation, entrepreneurship, and social support while upholding respect and banning hate speech |
23,103 |
| 73 |
Co-opcoop.co.uk
A large consumer co-operative in the UK, offering a variety of services including food retail, funeral services, insurance, and legal services |
21,184 |
| 74 |
Santander UKsantander.co.uk
Providing personal and commercial financial products and services to millions of customers, fostering diversity and a positive workplace culture. |
21,000 |
| 75 |
VOISvoiscentre.com
Global strategic arm of Vodafone, creating value and efficiency across 28 countries through talent, technology, and transformation for business outcomes |
20,863 |
| 76 |
King's College Londonkcl.ac.uk
Top-ranked university offering world-class education and research, fostering innovation and positive societal impact globally and locally. |
20,705 |
| 77 |
Ministry of Justice UKgov.uk
Government department responsible for justice system administration, legal affairs, courts, prisons, and public safety in the United Kingdom. |
20,603 |
| 78 |
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 |
| 79 |
University of Cambridgecam.ac.uk
A leading research university with 31 Colleges and over 150 departments, faculties, and schools, focused on excellence in education and research |
20,304 |
| 80 |
The University of Manchestermanchester.ac.uk
A prestigious university known for teaching excellence, research innovation, and a history of world firsts, with a large global alumni community |
20,294 |
| 81 |
Computacentercomputacenter.com
A leading technology and services provider, trusted by large organizations, helping customers manage and transform their technology infrastructure for digital transformation |
20,070 |
| 82 |
Travis Perkins plctravisperkinsplc.co.uk
The company is a leading partner to the construction industry, helping to build better communities, with over 20,000 colleagues in multiple countries |
20,000 |
| 83 |
Metropolitan Policepolice.uk
This organization polices London, handling law enforcement investigations, and also holds national responsibility for specialist units and counter-terrorism policing across the UK. |
19,966 |
| 84 |
World Visionwvi.org
A global humanitarian organization dedicated to improving the lives of children and families by addressing root causes of poverty worldwide |
19,419 |
| 85 |
IHG Hotels & Resortsihgplc.com
Management of twenty-one diverse hotel brands across luxury, premium, and essential categories, operating thousands of properties and a major global loyalty program. |
19,288 |
| 86 | 19,246 | |
| 87 |
Smith+Nephewsmith-nephew.com
Design and manufacture medical technologies supporting healthcare professionals to restore patient health and mobility, enhancing performance and quality of life. |
19,222 |
| 88 |
Clinicclinic.co.uk
Independent creative agency crafting bold ideas to drive action and change, with a focus on people's experiences and problem-solving for brands |
19,192 |
| 89 |
Entainentaingroup.com
A global sports betting and gaming entertainment group with over 25 brands, focused on revolutionizing the industry and promoting diversity |
18,906 |
| 90 |
Costa Coffeecosta.co.uk
Global coffee brand offering stores, ready-to-drink products, self-serve machines, and home options, focusing on community and growth. |
18,739 |
| 91 |
Menzies Aviationmenziesaviation.com
Providing ground handling, air cargo, and fueling services worldwide, ensuring safety, precision, and continuous support in aviation operations. |
18,695 |
| 92 |
Transport for Londontfl.gov.uk
London-based transportation company leading in providing diverse travel options, focusing on customer feedback, technology innovation, and large-scale investments for city-wide mobility improvements |
18,658 |
| 93 |
Haleonhaleon.com
The company is focused on improving everyday health through a human-centered approach They promote community guidelines for social media interactions #HelloHaleon |
18,581 |
| 94 |
Waitrose & Partnersjlpjobs.com
A unique business that focuses on creating happier and more trusted ways of operating, with a shared purpose to make a positive impact on society |
18,555 |
| 95 |
Revolutrevolut.com
A fintech company on a mission to provide customers with more visibility, control, and freedom over their money through innovative products |
18,462 |
| 96 |
Imperial College Londonimperial.ac.uk
Leading university specializing in science, medicine, engineering, and business, fostering interdisciplinary collaboration to advance knowledge and improve health. |
18,233 |
| 97 |
Centricacentrica.com
A leading energy services provider with a focus on sustainability, offering zero carbon electricity to millions of customers through various brands |
18,164 |
| 98 |
Turner & Townsendturnerandtownsend.com
Partnerships delivering impactful projects and programmes in real estate, infrastructure, energy, and natural resources, turning challenges into opportunities. |
17,895 |
| 99 |
UK Home Officegov.uk
The company works on issues related to drug use, alcohol policy, terrorism, crime prevention, border control, immigration, policing, and fire prevention and rescue |
17,613 |
| 100 |
National Gridnationalgrid.com
Operate and develop electricity transmission and distribution networks, natural gas systems, and invest in clean energy infrastructure and technology ventures. |
17,432 |
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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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The same list elsewhere in United Kingdom
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