# Top 100 publicly traded companies in the United Kingdom

Tamtam tracks 765 publicly traded companies headquartered in the United Kingdom. This list ranks the 100 largest by number of employees on LinkedIn, led by Shell, HSBC and Unilever. Their median headcount is 15,616. The most common headquarters are London (51), Edinburgh (2) and Hatfield (2).

This selection of publicly traded companies in the United Kingdom includes large, established groups across diverse sectors. Key players include Shell, a global energy company, HSBC, a financial services organization, Unilever, known for its consumer brands, and Vodafone, a telecommunications provider. Other notable firms are GSK, a pharmaceutical manufacturer, and Tesco, a global retailer.

The data shows a concentration of headquarters in London, indicating its role as a major business hub. The companies represent a mix of industries, with strong representation in financial services, retail, oil and gas, and telecommunications, reflecting the broad economic landscape of the UK.

🇬🇧 United Kingdom · 100 companies · Updated Nov 15, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Shell](https://www.tamtam.ai/c/shell) (shell.com)<br>A global energy company with a focus on cleaner energy solutions, serving millions of customers through retail service stations worldwide | Oil and Gas | 🇬🇧 London | 208,511 |  |
| 2 | [HSBC](https://www.tamtam.ai/c/hsbc) (hsbc.com)<br>A global financial services organization with a network spanning 63 countries, serving individuals, companies, and governments, creating opportunities for customers worldwide | Financial Services | 🇬🇧 London | 197,879 |  |
| 3 | [Unilever](https://www.tamtam.ai/c/unilever) (unilever.com)<br>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 | Manufacturing | 🇬🇧 Blackfriars | 145,051 | 1872 |
| 4 | [Vodafone](https://www.tamtam.ai/c/vodafone) (vodafone.com)<br>Using technology to connect people globally, drive social change, and improve lives while emphasizing the importance of humanity and collaboration | Telecommunications | 🇬🇧 London | 142,740 | 1982 |
| 5 | [FUJITSU](https://www.tamtam.ai/c/fujitsu) (global.fujitsu)<br>Leading global information and communication technology company, offering technology products, solutions, and services, connecting people, technology, and ideas for a sustainable world. | IT Services and IT Consulting | 🇬🇧 | 124,000 | 1935 |
| 6 | [Aon](https://www.tamtam.ai/c/aon) (aon.com)<br>The company provides advice and solutions to clients worldwide, helping them make better decisions to protect and grow their business | Financial Services | 🇬🇧 London | 93,574 |  |
| 7 | [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 |  |
| 8 | [Tesco](https://www.tamtam.ai/c/tesco) (tescoplc.com)<br>Global retailer offering food and fashion through physical stores and online platforms, employing hundreds of thousands across offices, distribution and engagement centers. | Retail | 🇬🇧 Welwyn Garden City | 91,023 |  |
| 9 | [bp](https://www.tamtam.ai/c/bp) (bp.com)<br>Investing in a balanced energy system by transitioning from oil and gas to lower-carbon energy, convenience stores, and power trading | Oil and Gas | 🇬🇧 London | 85,000 | 1909 |
| 10 | [Barclays](https://www.tamtam.ai/c/barclays) (home.barclays)<br>A British universal bank with global presence, offering consumer banking, payments, corporate and investment banking services, supported by technology and operational solutions | Financial Services | 🇬🇧 London | 82,417 |  |
| 11 | [Kingfisher plc](https://www.tamtam.ai/c/kingfisher-plc) (kingfisher.com)<br>International home improvement company with 1,900 stores across Europe Offering products and services for consumers and trade professionals to create better homes | Retail | 🇬🇧 London | 80,000 |  |
| 12 | [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 |  |
| 13 | [Standard Chartered](https://www.tamtam.ai/c/standard-chartered) (sc.com)<br>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 | Banking | 🇬🇧 London | 79,401 |  |
| 14 | [BT Group](https://www.tamtam.ai/c/bt-group) (bt.com)<br>A global communications services company connecting people through technology to address challenges like the pandemic, climate change, and cyber security | Telecommunications | 🇬🇧 London | 73,712 |  |
| 15 | [Sainsbury's](https://www.tamtam.ai/c/sainsbury-s) (sainsburys.jobs)<br>A leading UK retailer with over 1400 stores and a strong digital presence, offering affordable, greener products and convenient financial services to customers | Retail | 🇬🇧 London | 68,549 | 1869 |
| 16 | [Linde](https://www.tamtam.ai/c/linde) (linde.com)<br>Global industrial gases and engineering company providing high-quality solutions and services for various industries, supporting sustainability, decarbonization, and planet protection | Chemical Manufacturing | 🇬🇧 Woking | 66,000 | 1879 |
| 17 | [Compass Group](https://www.tamtam.ai/c/compass-group-amble) (compass-group.com)<br>Provides contract food and support services globally, aiming for world-class standards through great people, service, and results, generating significant revenue. | Food and Beverage Services | 🇬🇧 Chertsey | 61,555 | 1941 |
| 18 | [Lloyds Banking Group](https://www.tamtam.ai/c/lloyds-banking-group) (lloydsbankinggroup.com)<br>This company focuses on creating a more sustainable and inclusive future in the financial services industry, while supporting customers' changing needs | Financial Services | 🇬🇧 London | 57,702 |  |
| 19 | [WTW](https://www.tamtam.ai/c/wtw) (wtwco.com)<br>Offering data-driven solutions in people, risk, and capital areas, leveraging global expertise to enhance strategy, resilience, workforce motivation, and performance | Financial Services | 🇬🇧 London | 55,656 |  |
| 20 | [BAE Systems](https://www.tamtam.ai/c/bae-systems) (baesystems.com)<br>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 | Defense and Space Manufacturing | 🇬🇧 London | 55,143 | 1999 |
| 21 | [FCA Fiat Chrysler Automobiles](https://www.tamtam.ai/c/fca-fiat-chrysler-automobiles) (stellantis.com)<br>A leading automaker and mobility provider now known as Stellantis, dedicated to creating innovative transportation solutions for the future | Motor Vehicle Manufacturing | 🇬🇧 London | 47,673 |  |
| 22 | [BAT](https://www.tamtam.ai/c/bat) (bat.com)<br>Global consumer goods company focused on transitioning adult smokers to scientifically substantiated reduced-risk smokeless alternatives across multiple international markets. | Manufacturing | 🇬🇧 London | 46,311 | 1902 |
| 23 | [NatWest Group](https://www.tamtam.ai/c/natwest-group) (natwestgroup.com)<br>Support UK businesses by removing barriers, promoting learning, enhancing financial confidence, and championing climate solutions for sustainable community growth. | Banking | 🇬🇧 Edinburgh | 43,833 |  |
| 24 | [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 |  |
| 25 | [Marks and Spencer](https://www.tamtam.ai/c/marks-and-spencer) (jobs.marksandspencer.com)<br>Global retailer delivering quality products through physical and digital channels while prioritizing innovation and value for millions of customers across the world. | Retail | 🇬🇧 London | 40,055 | 1884 |
| 26 | [RELX](https://www.tamtam.ai/c/relx) (relx.com)<br>Global provider of information-based analytics for professionals across industries, helping customers make informed decisions through innovative solutions and technologies | Technology, Information and Media | 🇬🇧 London | 37,600 |  |
| 27 | [Aviva](https://www.tamtam.ai/c/aviva-london) (aviva.com)<br>This company prioritizes their people, striving to create an inclusive workplace with market-leading benefits for employees and a strong connection to customers and communities | Insurance | 🇬🇧 London | 36,000 | 1696 |
| 28 | [JD Sports Fashion](https://www.tamtam.ai/c/jd-sports-fashion) (careers.jdplc.com)<br>A global retailer and distributor of branded sportswear and fashionwear, with stores across Europe, North America, and Asia Pacific | Retail | 🇬🇧 Bury | 34,337 |  |
| 29 | [Diageo](https://www.tamtam.ai/c/diageo) (diageo.com)<br>Global leader in premium drinks, with over 200 brands sold in 180 countries Committed to sustainability, innovation, and excellence worldwide | Beverage Manufacturing | 🇬🇧 London | 34,137 |  |
| 30 | [Serco](https://www.tamtam.ai/c/serco-hook) (serco.com)<br>Innovative solutions for global challenges in justice, migration, defense, space, health, and transport through service design, program management, and systems integration | IT Services and IT Consulting | 🇬🇧 Hook | 32,618 |  |
| 31 | [Hays](https://www.tamtam.ai/c/hays) (haysplc.com)<br>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 | Staffing and Recruiting | 🇬🇧 London | 31,854 |  |
| 32 | [Rolls-Royce](https://www.tamtam.ai/c/rolls-royce) (rolls-royce.com)<br>Engineering excellence driving critical technologies for air, sea, and land, powering, protecting, and connecting people worldwide. | Industrial Machinery Manufacturing | 🇬🇧 London | 31,649 |  |
| 33 | [Imperial Brands PLC](https://www.tamtam.ai/c/imperial-brands-plc) (imperialbrandsplc.com)<br>An innovative global FMCG business with inclusive culture, focused on tobacco harm reduction, sustainability, and strong international brands | Manufacturing | 🇬🇧 Bristol | 29,000 |  |
| 34 | [Coca-Cola Europacific Partners](https://www.tamtam.ai/c/coca-cola-europacific-partners) (cocacolaep.com)<br>This multinational company produces, distributes, and sells popular drink brands in Europe, Australia, Indonesia, and the Pacific region | Manufacturing | 🇬🇧 Uxbridge | 27,236 |  |
| 35 | [Anglo American](https://www.tamtam.ai/c/anglo-american) (angloamerican.com)<br>Global mining company producing essential metals and minerals with a focus on sustainability, innovation, and community value creation. | Mining | 🇬🇧 London | 26,768 |  |
| 36 | [Next](https://www.tamtam.ai/c/next-leicester) (careers.next.co.uk)<br>Leading British retailer specializing in furniture production and technology development while fostering an innovative environment for warehouse teams and software engineering experts. | Retail | 🇬🇧 Leicester | 26,161 | 1982 |
| 37 | [TechnipFMC](https://www.tamtam.ai/c/technipfmc) (technipfmc.com)<br>A leading technology provider in the energy industry, offering integrated projects and services to develop energy resources while prioritizing sustainability | Oil and Gas | 🇬🇧 Newcastle upon Tyne | 25,875 |  |
| 38 | [Capita](https://www.tamtam.ai/c/capita) (capita.com)<br>A leading provider of business services using data, technology, and people to simplify connections between governments, citizens, businesses, and customers | IT Services and IT Consulting | 🇬🇧 London | 25,581 | 1984 |
| 39 | [LSEG](https://www.tamtam.ai/c/lseg) (lseg.com)<br>Provides financial indexing, benchmarking, analytic services, technology solutions, and integrated market infrastructure across data, capital markets, and post-trade. | Financial Services | 🇬🇧 London | 25,298 |  |
| 40 | [Balfour Beatty plc](https://www.tamtam.ai/c/balfour-beatty-plc) (balfourbeatty.com)<br>A global infrastructure group with 25,000 employees delivering innovative and efficient transportation, power, building, and utility systems for economic growth and community support | Construction | 🇬🇧 London | 25,000 | 1909 |
| 41 | [Computacenter](https://www.tamtam.ai/c/computacenter) (computacenter.com)<br>A leading technology and services provider, trusted by large organizations, helping customers manage and transform their technology infrastructure for digital transformation | IT Services and IT Consulting | 🇬🇧 Hatfield | 20,070 | 1981 |
| 42 | [IHG Hotels & Resorts](https://www.tamtam.ai/c/ihg-hotels-and-resorts) (ihgplc.com)<br>Management of twenty-one diverse hotel brands across luxury, premium, and essential categories, operating thousands of properties and a major global loyalty program. | Hospitality | 🇬🇧 Windsor | 19,288 | 2003 |
| 43 | [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 |
| 44 | [Entain](https://www.tamtam.ai/c/entain) (entaingroup.com)<br>A global sports betting and gaming entertainment group with over 25 brands, focused on revolutionizing the industry and promoting diversity | Entertainment Providers | 🇬🇧 London | 18,906 |  |
| 45 | [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 |
| 46 | [RBS](https://www.tamtam.ai/c/rbs) (natwestgroup.com)<br>Announcement of rebranding from RBS to NatWest Group, encouraging followers to transition to the new company page for updates. | Banking | 🇬🇧 Gogarburn | 18,457 |  |
| 47 | [Centrica](https://www.tamtam.ai/c/centrica) (centrica.com)<br>A leading energy services provider with a focus on sustainability, offering zero carbon electricity to millions of customers through various brands | Utilities | 🇬🇧 Windsor | 18,164 |  |
| 48 | [Frasers Group](https://www.tamtam.ai/c/frasers-group) (frasers.group)<br>Operate multiple iconic retail brands across various sectors, innovating and expanding to create future-proof shopping experiences worldwide. | Retail | 🇬🇧 London | 16,785 | 1982 |
| 49 | [Babcock International Group](https://www.tamtam.ai/c/babcock-international-group) (babcockinternational.com)<br>An international defence company providing product and service solutions to enhance customers' capabilities and assets, offering opportunities for professionals to grow | Defense and Space Manufacturing | 🇬🇧 London | 16,474 |  |
| 50 | [Sage](https://www.tamtam.ai/c/sage-newcastle-upon-tyne) (sage.com)<br>It provides businesses with user-friendly software and services, focusing on Payroll, HR, and Finance to enhance operational efficiency. | Software Development | 🇬🇧 Newcastle upon Tyne | 15,616 |  |
| 51 | [Whitbread](https://www.tamtam.ai/c/whitbread) (whitbreadcareers.com)<br>A hospitality company owning popular hotel and restaurant brands, employing over 35,000 people and focused on sustainability and community impact | Hospitality | 🇬🇧 Houghton Regis | 14,047 | 1742 |
| 52 | [easyJet](https://www.tamtam.ai/c/easyjet) (easyjet.com)<br>Mission-driven to make low-cost travel accessible with Europe's best airline network, value fares, and personalized service, fostering a supportive, opportunity-driven culture | Airlines and Aviation | 🇬🇧 London Luton Airport | 13,948 | 1995 |
| 53 | [Savills](https://www.tamtam.ai/c/savills) (savills.com)<br>Global real estate advisory firm providing tailored solutions and expert advice for residential and commercial property clients worldwide. | Real Estate | 🇬🇧 London | 13,891 |  |
| 54 | [Pearson](https://www.tamtam.ai/c/pearson-london) (pearson.com)<br>A global leader in learning, offering digital content, assessments, qualifications, and data to create vibrant and enriching learning experiences worldwide | Education | 🇬🇧 London | 13,596 |  |
| 55 | [Greggs](https://www.tamtam.ai/c/greggs) (greggs.com)<br>Leading food-on-the-go retailer with over 2,400 shops, offering freshly prepared, affordable, great tasting food to millions weekly. | Food and Beverage Services | 🇬🇧 | 13,592 | 1939 |
| 56 | [Greencore](https://www.tamtam.ai/c/greencore) (greencore.com)<br>Leading UK convenience food manufacturer supplying supermarkets, retailers, and foodservice with a wide range of products Emphasizes quality, sustainability, and innovation | Food and Beverage Manufacturing | 🇬🇧 Barlborough | 13,000 | 1991 |
| 57 | [SSE plc](https://www.tamtam.ai/c/sse-plc) (sse.com)<br>The company is focused on investing in a cleaner, more affordable, and secure energy system to drive positive change in the industry | Utilities | 🇬🇧 Perth | 12,865 |  |
| 58 | [Bank of Communications Co., Ltd. London Branch](https://www.tamtam.ai/c/bank-of-communications-co-ltd-london-branch) (bankcomm.com.hk)<br>Provides commercial banking, securities, trust services, financial leasing, fund management, and insurance through a vast network of domestic branches and international overseas institutions. | Banking | 🇬🇧 | 12,670 | 1908 |
| 59 | [Rentokil Initial](https://www.tamtam.ai/c/rentokil-initial) (rentokil-initial.com)<br>Global provider of pest control, hygiene, and well-being services protecting people and enhancing lives for commercial and private customers. | Environmental Services | 🇬🇧 Crawley | 12,515 | 1925 |
| 60 | [B&M Retail](https://www.tamtam.ai/c/b-and-m-retail) (careers.bmstores.co.uk)<br>A fast-growing discount retailer operating over 700 stores in the UK, offering a wide range of products at low prices for a fun shopping experience | Retail | 🇬🇧 Liverpool | 11,996 | 1978 |
| 61 | [Wise](https://www.tamtam.ai/c/wise-london) (wise.com)<br>Platform enabling individuals and businesses to hold multiple currencies, transfer money internationally, and spend abroad with low fees. | Financial Services | 🇬🇧 London | 11,769 | 2011 |
| 62 | [Clarivate](https://www.tamtam.ai/c/clarivate) (clarivate.com)<br>A global information services provider connecting people and organizations to trusted intelligence in Academia & Government, Life Sciences & Healthcare, and Intellectual Property | Information Services | 🇬🇧 London | 11,385 |  |
| 63 | [Admiral Group Plc](https://www.tamtam.ai/c/admiral-group-plc) (admiralgroup.co.uk)<br>Leading car insurance provider in the UK and 7 other countries, focusing on innovation, customer service, and employee satisfaction. | Financial Services | 🇬🇧 Cardiff | 11,047 | 1993 |
| 64 | [The Weir Group PLC](https://www.tamtam.ai/c/the-weir-group-plc) (global.weir)<br>Global leader providing innovative, efficient, and sustainable mining technology solutions combining engineering, materials science, and intelligent automation expertise. | Mining | 🇬🇧 Glasgow | 10,199 | 1871 |
| 65 | [Barclays UK](https://www.tamtam.ai/c/barclays-uk) (search.jobs.barclays)<br>A company focused on helping individuals progress in their lives through financial services, digital innovation, career guidance, and customer-centric approach | Banking | 🇬🇧 London | 9,925 | 1690 |
| 66 | [Smiths Group plc](https://www.tamtam.ai/c/smiths-group-plc) (smiths.com)<br>A global pioneer in engineering for over 170 years, improving the world by serving millions and creating a safer, more efficient, and better-connected world | Industrial Machinery Manufacturing | 🇬🇧 | 9,866 | 1851 |
| 67 | [Atkins](https://www.tamtam.ai/c/atkins) (atkinsrealis.com)<br>World-class engineering services and nuclear organization connecting people, data, and technology to transform global infrastructure and energy systems through design and management. | Engineering Services | 🇬🇧 Epsom | 9,798 |  |
| 68 | [Investec](https://www.tamtam.ai/c/investec) (investec.com)<br>Provides global banking and asset management services, creating and managing wealth through specialized financial solutions and insights for diverse international clients. | Financial Services | 🇬🇧 London | 9,732 | 1974 |
| 69 | [Endava](https://www.tamtam.ai/c/endava) (endava.com)<br>The company leverages technology and expertise to drive innovation and transform businesses with customized digital solutions across industries | IT Services and IT Consulting | 🇬🇧 London | 9,559 | 2020 |
| 70 | [Informa](https://www.tamtam.ai/c/informa) (informa.com)<br>Leading international business in events, digital services, and academic knowledge, connecting specialists worldwide to learn, know, and do more in their fields | Information Services | 🇬🇧 London | 9,410 | 1998 |
| 71 | [Jet2.com and Jet2holidays](https://www.tamtam.ai/c/jet2-com-and-jet2holidays) (jet2careers.com)<br>A leisure flight and package holiday operator with over 40 years of success, offering great value and service across Europe | Airlines and Aviation | 🇬🇧 Leeds | 8,917 | 2002 |
| 72 | [ITV](https://www.tamtam.ai/c/itv) (itvplc.com)<br>A leading UK media company shaping culture, known for famous productions and digital innovation, fostering a culture of inclusivity and growth | Broadcast Media Production and Distribution | 🇬🇧 London | 8,903 |  |
| 73 | [Burberry](https://www.tamtam.ai/c/burberry) (burberrycareers.com)<br>Innovative global luxury brand with British heritage, known for iconic trench coats and commitment to sustainability, diversity, and inclusion | Retail Luxury Goods and Jewelry | 🇬🇧 London | 8,769 | 1856 |
| 74 | [Johnson Matthey](https://www.tamtam.ai/c/johnson-matthey) (matthey.com)<br>development of sustainable technologies supporting energy, chemicals, and automotive sectors to decarbonise, reduce emissions, and enhance sustainability | Chemical Manufacturing | 🇬🇧 London | 8,592 | 1817 |
| 75 | [RS](https://www.tamtam.ai/c/rs) (rs-online.com)<br>Global distributor offering over 500,000 engineering products, supporting engineers with tools, components, and a collaborative innovation community. | Parts Distribution | 🇬🇧 London | 8,475 | 1937 |
| 76 | [Currys plc](https://www.tamtam.ai/c/currys-plc) (currysplc.com)<br>Retail technology products with delivery, installation, repair, recycling services, supporting customers and colleagues with flexible work and wellbeing programs. | Retail | 🇬🇧 | 8,423 |  |
| 77 | [SThree](https://www.tamtam.ai/c/sthree) (sthree.com)<br>Connecting skilled STEM professionals with organizations to drive innovation and solve complex challenges through specialist brands and tailored workforce solutions. | Business Consulting and Services | 🇬🇧 London | 7,927 |  |
| 78 | [Legal & General](https://www.tamtam.ai/c/legal-and-general) (legalandgeneral.com)<br>Provides financial services through asset management, pension risk transfers, and retail savings while investing capital responsibly to deliver long-term shareholder returns. | Financial Services | 🇬🇧 London | 7,832 |  |
| 79 | [Morgan Sindall Group plc](https://www.tamtam.ai/c/morgan-sindall-group-plc) (morgansindall.com)<br>Specializes in construction, partnerships, fit out, infrastructure, and property services across public, regulated, and private sectors with six divisions. | Construction | 🇬🇧 London | 7,807 |  |
| 80 | [Pentair](https://www.tamtam.ai/c/pentair) (pentair.com)<br>This company provides sustainable water solutions for residential, business, and industrial use globally, focusing on improving lives and the environment | Industrial Machinery Manufacturing | 🇬🇧 London | 7,711 | 1966 |
| 81 | [IMI](https://www.tamtam.ai/c/imi-birmingham) (imiplc.com)<br>A global engineering company specializing in creating innovative solutions for fluid and motion control applications across various industries, focusing on collaboration and sustainability | Industrial Machinery Manufacturing | 🇬🇧 Birmingham | 7,637 |  |
| 82 | [TP ICAP](https://www.tamtam.ai/c/tp-icap) (tpicap.com)<br>Specialist in connecting clients to liquidity and data solutions across financial and commodities markets with advanced technology and global presence. | Financial Services | 🇬🇧 Liverpool Street | 7,548 |  |
| 83 | [Howdens](https://www.tamtam.ai/c/howdens) (howdenjoinerygroupplc.com)<br>The company is the UK's top kitchen supplier, offering products for kitchens, joinery, hardware, and bathrooms through over 800 depots | Wholesale Building Materials | 🇬🇧 London | 7,130 | 1995 |
| 84 | [NatWest](https://www.tamtam.ai/c/natwest) (natwest.com)<br>Provides comprehensive banking services to personal, small business, and SME customers, supports the UK economy through lending to businesses, and fosters entrepreneurship. | Banking | 🇬🇧 | 7,041 |  |
| 85 | [Severn Trent](https://www.tamtam.ai/c/severn-trent) (severntrent.com)<br>Provision of clean water and safe wastewater removal for homes, schools, businesses, and hospitals, focusing on community care and quality service. | Utilities | 🇬🇧 Coventry | 7,000 | 1974 |
| 86 | [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 |
| 87 | [Sports Direct](https://www.tamtam.ai/c/sports-direct) (frasers.group)<br>A leading sports retailer with a diversified portfolio of brands, focusing on elevating retail offerings through investments in people and brand partnerships | Retail | 🇬🇧 Shirebrook | 6,921 | 1982 |
| 88 | [Mobico Group PLC](https://www.tamtam.ai/c/mobico-group-plc) (mobicogroup.com)<br>A leading international transport provider operating in 11 countries, promoting safe, affordable, and reliable public transport for the benefit of the planet | Truck Transportation | 🇬🇧 England | 6,835 |  |
| 89 | [SABMiller](https://www.tamtam.ai/c/sabmiller) (ab-inbev.com)<br>Global brewing company formed by AB InBev and SABMiller merger, producing and distributing beer and beverages worldwide. | Food and Beverage Services | 🇬🇧 Woking | 6,716 |  |
| 90 | [Spire Healthcare Group plc](https://www.tamtam.ai/c/spire-healthcare-group-plc) (spirehealthcare.com)<br>Leading provider of private healthcare services operating 38 hospitals and over 50 clinics, consulting rooms, and medical centres in the UK. | Hospitals and Health Care | 🇬🇧 London | 6,621 | 2007 |
| 91 | [Boohoo Group PLC](https://www.tamtam.ai/c/boohoo-group-plc) (boohoogroup.com)<br>Leader in online fashion retail with 13 brands, global presence, and a team of 6,000+, offering endless opportunities for growth and evolution | Retail Apparel and Fashion | 🇬🇧 Manchester | 6,523 |  |
| 92 | [Soho House & Co](https://www.tamtam.ai/c/soho-house-and-co) (sohohouse.com)<br>Private members' clubs for creative industries featuring houses, restaurants, cinemas, spas, and workspaces across Europe and North America for networking and social growth. | Hospitality | 🇬🇧 Strand | 6,509 | 1995 |
| 93 | [Mastek](https://www.tamtam.ai/c/mastek) (mastek.com)<br>Enterprise digital and cloud transformation partner delivering solutions in digital experience, cloud, data, automation, AI, and managed services globally. | IT Services and IT Consulting | 🇬🇧 Reading | 6,396 |  |
| 94 | [Halfords](https://www.tamtam.ai/c/halfords) (halfords.com)<br>The company provides expert motoring and cycling products, services, and repairs, with over 12,000 employees across 393 stores in the UK and Republic of Ireland | Retail | 🇬🇧 Redditch | 6,148 | 1892 |
| 95 | [KELLER](https://www.tamtam.ai/c/keller) (keller.com)<br>A global geotechnical specialist contractor that solves construction challenges with local focus, expertise, and a track record of successful projects | Construction | 🇬🇧 London | 5,930 |  |
| 96 | [WHSmith](https://www.tamtam.ai/c/whsmith) (whsmithcareers.co.uk)<br>A global travel retailer with high street presence, offering travel essentials, books, stationery, tech accessories, online shopping, and supporting customers' journeys through life | Retail | 🇬🇧 London | 5,729 | 1792 |
| 97 | [Ocado Group](https://www.tamtam.ai/c/ocado-group) (ocadogroup.com)<br>Global technology company specializing in online grocery and logistics platforms, enabling partners to excel in ecommerce fulfillment and automation across various industries. | Software Development | 🇬🇧 Hatfield | 5,698 |  |
| 98 | [Aberdeen](https://www.tamtam.ai/c/aberdeen) (aberdeenplc.com)<br>Providing wealth and investment services focused on helping clients plan, manage portfolios, and navigate financial futures with insight. | Financial Services | 🇬🇧 Edinburgh | 5,527 |  |
| 99 | [QinetiQ](https://www.tamtam.ai/c/qinetiq) (qinetiq.com)<br>Integrated global defence and security company focused on mission-led innovation, testing technologies, and enabling customers to deploy enhanced capabilities for protecting lives. | Defense and Space Manufacturing | 🇬🇧 Farnborough | 5,512 |  |
| 100 | [Pets at Home](https://www.tamtam.ai/c/pets-at-home) (petsathome.com)<br>Leading UK petcare retailer with stores, grooming salons, veterinary practices, and dedicated colleagues focused on animal welfare and customer service. | Retail | 🇬🇧 Handforth | 5,381 | 1991 |

## 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 15, 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) (1,061)

## The same list elsewhere in United Kingdom

- [Publicly traded companies in London](https://www.tamtam.ai/l/publicly-traded-companies-london) (277)

## The same list elsewhere

- [Publicly traded companies in the world](https://www.tamtam.ai/l/publicly-traded-companies-in-the-world) (11,533)
- [Publicly traded companies in Europe](https://www.tamtam.ai/l/publicly-traded-companies-in-europe) (3,622)

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Source: https://www.tamtam.ai/l/publicly-traded-companies-united-kingdom