# 100 leading subscription businesses in the United Kingdom
Tamtam tracks 1,077 subscription businesses headquartered in the United Kingdom. This list ranks the 100 largest by number of employees on LinkedIn, led by Vodafone, BT Group and RELX. Their median headcount is 3,445. Half of them were founded in 1995 or later. The most common headquarters are London (52), Manchester (3) and Windsor (3).
These large UK companies are primarily in telecommunications, financial services, and information technology. Vodafone and BT Group are major telecommunications providers. RELX specializes in information-based analytics, and LSEG offers financial indexing and analytic services. Revolut is a fintech company, and Sage provides business software.
Most of these companies are headquartered in London, including Vodafone, BT Group, RELX, LSEG, and Revolut. Other headquarters include Middlesex for Sky, Windsor for Centrica and British Gas, Newcastle upon Tyne for Sage, Cardiff for Admiral Group Plc, and Crawley for Ambius United Kingdom. The companies were founded between 1980 and 2017.
π¬π§ United Kingdom Β· 100 companies Β· Updated Nov 11, 2026
| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Vodafone](https://www.tamtam.ai/c/vodafone) (vodafone.com)
Using technology to connect people globally, drive social change, and improve lives while emphasizing the importance of humanity and collaboration | Telecommunications | π¬π§ London | 142,740 | 1982 |
| 2 | [BT Group](https://www.tamtam.ai/c/bt-group) (bt.com)
A global communications services company connecting people through technology to address challenges like the pandemic, climate change, and cyber security | Telecommunications | π¬π§ London | 73,712 | |
| 3 | [RELX](https://www.tamtam.ai/c/relx) (relx.com)
Global provider of information-based analytics for professionals across industries, helping customers make informed decisions through innovative solutions and technologies | Technology, Information and Media | π¬π§ London | 37,600 | |
| 4 | [Sky](https://www.tamtam.ai/c/sky) (sky.com)
A leading media and entertainment company offering innovative TV, streaming services, connectivity solutions, premium content production, and societal impact initiatives | Broadcast Media Production and Distribution | π¬π§ Middlesex | 35,346 | 1989 |
| 5 | [LSEG](https://www.tamtam.ai/c/lseg) (lseg.com)
Provides financial indexing, benchmarking, analytic services, technology solutions, and integrated market infrastructure across data, capital markets, and post-trade. | Financial Services | π¬π§ London | 25,298 | |
| 6 | [Revolut](https://www.tamtam.ai/c/revolut) (revolut.com)
A fintech company on a mission to provide customers with more visibility, control, and freedom over their money through innovative products | Financial Services | π¬π§ London | 18,462 | 2015 |
| 7 | [Centrica](https://www.tamtam.ai/c/centrica) (centrica.com)
A leading energy services provider with a focus on sustainability, offering zero carbon electricity to millions of customers through various brands | Utilities | π¬π§ Windsor | 18,164 | |
| 8 | [Sage](https://www.tamtam.ai/c/sage-newcastle-upon-tyne) (sage.com)
It provides businesses with user-friendly software and services, focusing on Payroll, HR, and Finance to enhance operational efficiency. | Software Development | π¬π§ Newcastle upon Tyne | 15,616 | |
| 9 | [Pearson](https://www.tamtam.ai/c/pearson-london) (pearson.com)
A global leader in learning, offering digital content, assessments, qualifications, and data to create vibrant and enriching learning experiences worldwide | Education | π¬π§ London | 13,596 | |
| 10 | [Ambius United Kingdom](https://www.tamtam.ai/c/ambius-united-kingdom) (ambius.co.uk)
Global provider of plants, replica foliage, and flowers for commercial spaces, offering interior landscaping, exterior landscaping, floral arrangements, artificial plants, and art rentals | Facilities Services | π¬π§ Crawley | 13,201 | 1980 |
| 11 | [Finastra](https://www.tamtam.ai/c/finastra) (finastra.com)
Focusing on OPEN Collaboration & Finance, Finastra provides innovative technology solutions for global financial services, promoting financial inclusion and diversity | Financial Services | π¬π§ Paddington | 12,499 | 2017 |
| 12 | [EE](https://www.tamtam.ai/c/ee) (ee.co.uk)
A leading mobile communications company in the UK, offering mobile and fixed services with the largest and fastest network coverage | Telecommunications | π¬π§ London | 12,146 | 2012 |
| 13 | [Clarivate](https://www.tamtam.ai/c/clarivate) (clarivate.com)
A global information services provider connecting people and organizations to trusted intelligence in Academia & Government, Life Sciences & Healthcare, and Intellectual Property | Information Services | π¬π§ London | 11,385 | |
| 14 | [Admiral Group Plc](https://www.tamtam.ai/c/admiral-group-plc) (admiralgroup.co.uk)
Leading car insurance provider in the UK and 7 other countries, focusing on innovation, customer service, and employee satisfaction. | Financial Services | π¬π§ Cardiff | 11,047 | 1993 |
| 15 | [British Gas](https://www.tamtam.ai/c/british-gas) (britishgas.co.uk)
Providing affordable energy services and support to millions of UK homes and businesses, focusing on saving energy and money. | Utilities | π¬π§ Windsor | 10,311 | 1997 |
| 16 | [BSI](https://www.tamtam.ai/c/bsi-london) (bsigroup.com)
A global organization with over 100 years of experience in shaping best practices, helping businesses achieve excellence, competence, and sustainable growth | Professional Services | π¬π§ London | 9,882 | 1901 |
| 17 | [Financial Times](https://www.tamtam.ai/c/financial-times) (ft.com)
provides authoritative, accurate business news and information with a large digital subscription base, serving the global business community. | Newspaper Publishing | π¬π§ London | 9,092 | |
| 18 | [Nuffield Health](https://www.tamtam.ai/c/nuffield-health) (nuffieldhealth.com)
Leading UK not-for-profit healthcare organization, investing all income back into hospitals, fitness clubs, and wellbeing services to build a healthier nation. | Wellness and Fitness Services | π¬π§ London | 9,066 | |
| 19 | [Allianz UK](https://www.tamtam.ai/c/allianz-uk) (allianz.co.uk)
Global financial services provider offering commercial and personal insurance products through brokers, focusing on employee growth, diversity, and sustainability for a better future | Insurance | π¬π§ Guildford | 8,735 | |
| 20 | [ACCA](https://www.tamtam.ai/c/acca) (accaglobal.com)
A global body for professional accountants, providing qualifications and support while promoting ethics, governance, and public interest in the profession | Accounting | π¬π§ London | 8,556 | 1904 |
| 21 | [Oxford University Press](https://www.tamtam.ai/c/oxford-university-press) (oup.com)
An institution part of the University of Oxford with a 500-year history of providing high-quality research and education resources globally | Book and Periodical Publishing | π¬π§ Oxford | 8,246 | 1478 |
| 22 | [Virgin Active](https://www.tamtam.ai/c/virgin-active) (virginactive.co.uk)
Operates large health clubs offering diverse fitness products and services, inspiring active lifestyles with personalized gym and boutique experiences. | Wellness and Fitness Services | π¬π§ London | 7,690 | 1999 |
| 23 | [AVEVA](https://www.tamtam.ai/c/aveva) (aveva.com)
It provides industrial software solutions that enhance collaboration, optimize operations, and drive sustainability for enterprises across various sectors globally. | Software Development | π¬π§ Cambridge | 7,630 | |
| 24 | [The Access Group](https://www.tamtam.ai/c/the-access-group) (theaccessgroup.com)
It provides business management software solutions for small and mid-sized organizations, enhancing productivity through innovative cloud and AI technologies. | Software Development | π¬π§ Loughborough | 7,368 | |
| 25 | [David Lloyd Clubs](https://www.tamtam.ai/c/david-lloyd-clubs) (davidlloyd.co.uk)
Largest European health and fitness group operating clubs with gyms, pools, racquet sports, spas, kids facilities, and social spaces for families. | Wellness and Fitness Services | π¬π§ Hatfield | 6,843 | 1982 |
| 26 | [The Economist](https://www.tamtam.ai/c/the-economist) (economist.com)
Global news and analysis provider helping individuals understand the world; offering subscriptions for in-depth insights and respecting personal data privacy | Newspaper Publishing | π¬π§ London | 6,694 | 1843 |
| 27 | [Soho House & Co](https://www.tamtam.ai/c/soho-house-and-co) (sohohouse.com)
Private members' clubs for creative industries featuring houses, restaurants, cinemas, spas, and workspaces across Europe and North America for networking and social growth. | Hospitality | π¬π§ Strand | 6,509 | 1995 |
| 28 | [Formula 1](https://www.tamtam.ai/c/formula-1) (formula1.com)
Delivering Formula 1's global spectacle through technical infrastructure, data analysis, content production, hospitality programs, and innovative marketing to engage fans worldwide | Broadcast Media Production and Distribution | π¬π§ London | 6,081 | |
| 29 | [OnlyFans](https://www.tamtam.ai/c/onlyfans) (onlyfans.com)
A platform empowering creators to express themselves, monetize content, and build connections with fans in a safe and inclusive environment | Entertainment Providers | π¬π§ London | 5,941 | 2016 |
| 30 | [ION](https://www.tamtam.ai/c/ion) (iongroup.com)
Innovative company providing trading and workflow automation software to financial institutions, corporations, and governments, empowering decision-making and accelerating processes | Software Development | π¬π§ London | 5,591 | 1998 |
| 31 | [Sophos](https://www.tamtam.ai/c/sophos) (sophos.com)
A global cybersecurity leader offering advanced solutions, managed services, and a broad portfolio of technologies to protect organizations from cyberattacks worldwide | Software Development | π¬π§ Abingdon | 5,498 | 1985 |
| 32 | [Manchester United](https://www.tamtam.ai/c/manchester-united) (manutd.com)
Global football club with 146-year heritage, 68 trophies, and a passionate worldwide community generating revenue through sponsorships and merchandising. | Spectator Sports | π¬π§ | 5,391 | 1878 |
| 33 | [Pets at Home](https://www.tamtam.ai/c/pets-at-home) (petsathome.com)
Leading UK petcare retailer with stores, grooming salons, veterinary practices, and dedicated colleagues focused on animal welfare and customer service. | Retail | π¬π§ Handforth | 5,381 | 1991 |
| 34 | [O2 (TelefΓ³nica UK)](https://www.tamtam.ai/c/o2-telefonica-uk) (o2.co.uk)
Leading UK mobile network operator providing 2G to 5G services, retail stores, WiFi, and partnerships with Tesco Mobile and entertainment venues. | Telecommunications | π¬π§ Reading | 5,371 | |
| 35 | [Everyone Active - SLM](https://www.tamtam.ai/c/everyone-active-slm) (everyoneactive.com)
This company specializes in managing local authority leisure contracts, focusing on delivering high-quality services and increasing community participation | Wellness and Fitness Services | π¬π§ Hinckley | 5,340 | 1987 |
| 36 | [Sapiens](https://www.tamtam.ai/c/sapiens) (sapiens.com)
Global leader providing intelligent software solutions for insurers, empowering them with AI and automation across property, casualty, and life insurance operations. | Software Development | π¬π§ London | 5,271 | 1982 |
| 37 | [Monzo](https://www.tamtam.ai/c/monzo) (monzo.com)
A mobile-first bank focused on solving problems, treating customers fairly, and being transparent to make banking better | Financial Services | π¬π§ London | 5,267 | 2015 |
| 38 | [LSEG Data & Analytics](https://www.tamtam.ai/c/lseg-data-and-analytics) (lseg.com)
A global provider of financial markets data and infrastructure, enabling customers to gain insights through data, feeds, analytics, and workflow solutions | Financial Services | π¬π§ London | 5,147 | |
| 39 | [Fitness AI](https://www.tamtam.ai/c/fitness-ai) (guden.org)
Fitness AI is a mobile app using artificial intelligence to personalize workout plans, track progress, and motivate users towards achieving health and fitness goals | Wellness and Fitness Services | π¬π§ London | 5,137 | |
| 40 | [Utility Warehouse](https://www.tamtam.ai/c/utility-warehouse) (uw.co.uk)
A growing business focusing on simplifying utilities and providing personalized service to help people spend more time on important things | Utilities | π¬π§ London | 5,083 | 1997 |
| 41 | [YouGov](https://www.tamtam.ai/c/yougov) (yougov.com)
An international online research and analytics technology group providing unparalleled consumer insights for brands, media owners, and agencies worldwide | Market Research | π¬π§ London | 4,691 | 2000 |
| 42 | [The AA](https://www.tamtam.ai/c/the-aa) (theaa.com)
A long-standing company prioritizing drivers with comprehensive driving services including insurance, roadside assistance, car maintenance, and more for confident, lifelong partnerships | Motor Vehicle Manufacturing | π¬π§ Basingstoke | 4,204 | 1905 |
| 43 | [Fitch Group, Inc.](https://www.tamtam.ai/c/fitch-group-inc) (fitch.group)
Global leader in financial information services with operations in 30+ countries Offers credit ratings, research, risk solutions, training, and venture investments Dual headquarters in London and New York | Financial Services | π¬π§ London | 4,203 | 1913 |
| 44 | [DAZN](https://www.tamtam.ai/c/dazn) (dazngroup.com)
Global sports media innovators using cutting-edge technology to revolutionize the industry, providing sports streaming services and fostering an inclusive, diverse work environment | Spectator Sports | π¬π§ London | 4,092 | |
| 45 | [Future](https://www.tamtam.ai/c/future) (futureplc.com)
Global specialist media platform creating expert original content through websites, magazines, events, and social spaces reaching millions. | Media Production | π¬π§ London | 3,900 | 1985 |
| 46 | [Boots Opticians](https://www.tamtam.ai/c/boots-opticians) (boots.com)
Providing extensive eyecare services and a wide range of designer glasses and contact lens plans across numerous UK stores. | Retail | π¬π§ Nottingham | 3,710 | |
| 47 | [Taylor & Francis Group](https://www.tamtam.ai/c/taylor-and-francis-group) (taylorandfrancis.com)
A leading publisher of scholarly content in Humanities, Social Sciences, Science, and Medicine, partnering with researchers and institutions worldwide for knowledge dissemination | Book and Periodical Publishing | π¬π§ Milton | 3,598 | 1798 |
| 48 | [RAC](https://www.tamtam.ai/c/rac) (rac.co.uk)
It is a leading UK breakdown service provider with a long history, aiming to be the top choice for motoring services. | Vehicle Repair and Maintenance | π¬π§ Bescot | 3,597 | 1897 |
| 49 | [Infobip](https://www.tamtam.ai/c/infobip) (infobip.com)
Global leader in omnichannel engagement, providing messaging tools and solutions for customer engagement, authentication, and security with a strong focus on quality engineering | IT Services and IT Consulting | π¬π§ London | 3,501 | 2006 |
| 50 | [TryHackMe](https://www.tamtam.ai/c/tryhackme) (tryhackme.com)
It simplifies learning and teaching Cybersecurity through prebuilt courses and cloud-hosted virtual machines, ideal for CTFs, workshops, and training. | Computer and Network Security | π¬π§ London | 3,445 | 2018 |
| 51 | [Tide](https://www.tamtam.ai/c/tide) (tide.co)
Leading fintech providing UK and Indian SMEs with business accounts, banking services, and admin tools Award-winning with global recognition and funding | Financial Services | π¬π§ London | 3,323 | 2015 |
| 52 | [Arsenal Football Club](https://www.tamtam.ai/c/arsenal-football-club) (arsenal.com)
Professional football club focusing on winning trophies, developing youth talent, community involvement, maintaining a magnificent stadium, and self-financing operations. | Spectator Sports | π¬π§ London | 3,285 | |
| 53 | [Law AI](https://www.tamtam.ai/c/law-ai) (guden.org)
A mobile app using AI to help users with legal needs by matching them with lawyers, providing legal research, and document drafting tools | Law Practice | π¬π§ London | 3,161 | |
| 54 | [Civica](https://www.tamtam.ai/c/civica) (civica.com)
The company creates software solutions for delivering essential services to people globally | Software Development | π¬π§ London | 3,116 | 2001 |
| 55 | [Accelya](https://www.tamtam.ai/c/accelya) (w3.accelya.com)
A global software provider for airlines, empowering over 200 airlines with innovative solutions to drive growth, enhance customer experience, and control retailing operations | IT Services and IT Consulting | π¬π§ Windsor | 3,080 | 1976 |
| 56 | [Claranet](https://www.tamtam.ai/c/claranet) (claranet.com)
A global technology services provider offering managed services, professional services, and training in Cloud, Networks, Cyber Security, and Workplace technologies since 1996 | IT Services and IT Consulting | π¬π§ London | 3,073 | 1996 |
| 57 | [Dentistry](https://www.tamtam.ai/c/dentistry) (dentistry.co.uk)
Leading UK dental website & magazine providing industry news, education, analysis, clinical insights, business tips, and product information for dental professionals | Technology, Information and Media | π¬π§ Shenley | 3,066 | 1994 |
| 58 | [Genius Sports](https://www.tamtam.ai/c/genius-sports-london) (geniussports.com)
This company delivers technology and expertise to sports, betting, and media partners worldwide, enhancing data collection, fan engagement, and overall performance | Software Development | π¬π§ London | 3,054 | 2001 |
| 59 | [IRIS Software Group](https://www.tamtam.ai/c/iris-software-group) (iris.co.uk)
Leading provider of integrated software solutions and services to help organizations make better business decisions, minimize admin, and improve efficiency across various industries. | Software Development | π¬π§ Slough | 3,041 | |
| 60 | [The Guardian](https://www.tamtam.ai/c/the-guardian) (theguardian.com)
A leading publisher of theguardiancom, Guardian US, and Guardian Australia, known for agenda-setting journalism and investigative reporting worldwide | Book and Periodical Publishing | π¬π§ London | 2,944 | |
| 61 | [Peninsula UK](https://www.tamtam.ai/c/peninsula-uk) (peninsulagrouplimited.com)
Provides employment law, HR, and health & safety services, including training, tax, payroll, software, and employee assistance programs to businesses. | Human Resources Services | π¬π§ Manchester | 2,888 | 1983 |
| 62 | [TradingView](https://www.tamtam.ai/c/tradingview) (tradingview.com)
Social network and charting platform for traders and investors, used by 50 million+ users worldwide with open source charts used by financial giants | Financial Services | π¬π§ London | 2,761 | 2011 |
| 63 | [GlobalData Plc](https://www.tamtam.ai/c/globaldata-plc) (globaldata.com)
A leading information services company helps organizations and decision-makers predict the future, make informed decisions, and gain a competitive edge | Information Services | π¬π§ London | 2,711 | 2010 |
| 64 | [Vitality](https://www.tamtam.ai/c/vitality-london) (vitality.co.uk)
This company offers health insurance, life insurance, and investments that reward healthy lifestyle choices, leading to a longer, healthier, and financially secure life | Financial Services | π¬π§ London | 2,671 | 2004 |
| 65 | [Darktrace](https://www.tamtam.ai/c/darktrace) (darktrace.com)
AI cybersecurity platform learns unique data, detects threats, and intervenes against attacks, protecting organizations worldwide from cyber-threats. | Computer and Network Security | π¬π§ Cambridge | 2,632 | 2013 |
| 66 | [NCC Group](https://www.tamtam.ai/c/ncc-group) (nccgroupplc.com)
Cybersecurity firm advising global organizations on protecting data and systems, with expertise in assessing, mitigating, and responding to cyber threats Offices worldwide | IT Services and IT Consulting | π¬π§ Manchester | 2,617 | 1999 |
| 67 | [Gamma](https://www.tamtam.ai/c/gamma) (gammagroup.co)
Gamma is a leading supplier of Unified Communications services in the UK, Germany, Spain, and Benelux, offering robust solutions for communication and collaboration | Telecommunications | π¬π§ London | 2,588 | 2002 |
| 68 | [Tes](https://www.tamtam.ai/c/tes) (tes.com)
Global education company supporting teachers and schools worldwide with products and services for recruitment, training, lesson preparation, career advice, and job opportunities | Education | π¬π§ Sheffield | 2,522 | 1910 |
| 69 | [Wood Mackenzie](https://www.tamtam.ai/c/wood-mackenzie) (woodmac.com)
Provider of data, analytics, and consultancy services for renewables, energy, and natural resources sectors supporting investment decisions. | Information Services | π¬π§ Edinburgh | 2,472 | |
| 70 | [Keyloop](https://www.tamtam.ai/c/keyloop) (keyloop.com)
Global automotive technology company delivering cutting-edge solutions for auto retailers and OEMs, connecting them to consumers through innovative technology and distinctive customer experiences | Software Development | π¬π§ Reading | 2,435 | |
| 71 | [Mimecast](https://www.tamtam.ai/c/mimecast) (mimecast.com)
Protects humans, data, and AI agents through a unified platform, securing the workforce and their interactions with AI from cyberattacks. | Computer and Network Security | π¬π§ London | 2,396 | 2003 |
| 72 | [Hack The Box](https://www.tamtam.ai/c/hack-the-box) (hackthebox.com)
Leading platform enhancing organizational cyber resilience, battle-testing and upskilling humans and AI agents through real-world scenarios and gamified labs. | Computer and Network Security | π¬π§ Folkestone | 2,309 | 2017 |
| 73 | [The Gym Group](https://www.tamtam.ai/c/the-gym-group) (thegymgroup.com)
Provides affordable, 24/7 gyms across the UK with a focus on accessibility, community health, and member satisfaction. | Wellness and Fitness Services | π¬π§ East Croydon | 2,296 | 2007 |
| 74 | [Ocado Retail](https://www.tamtam.ai/c/ocado-retail) (ocadoretail.com)
Dedicated online supermarket offering unbeatable choice, excellent service, and good value to customers seeking convenient grocery shopping. | Retail | π¬π§ Hatfield | 2,292 | 2019 |
| 75 | [Cineworld Cinemas Ltd](https://www.tamtam.ai/c/cineworld-cinemas-ltd) (cineworld.com)
This company provides an unparalleled cinema experience in the UK & Ireland with over 100 cinemas, offering special formats like IMAX and 4DX | Movies, Videos, and Sound | π¬π§ Brentford | 2,245 | 1995 |
| 76 | [Medivet & Partners](https://www.tamtam.ai/c/medivet-and-partners) (medivetgroup.com)
A community of passionate veterinary professionals dedicated to providing exceptional care, top-rated customer service, and continuous learning opportunities in the industry | Veterinary Services | π¬π§ Watford | 2,227 | 1987 |
| 77 | [OneAdvanced](https://www.tamtam.ai/c/oneadvanced) (oneadvanced.com)
Provider of sector-focused business software and services supporting millions of users across healthcare, education, legal, and public sectors in the UK. | Software Development | π¬π§ Birmingham | 2,179 | |
| 78 | [Euromonitor International](https://www.tamtam.ai/c/euromonitor-international) (euromonitor.com)
Provides comprehensive global data analytics and research on markets, industries, economies, and consumers to support strategic business growth decisions. | Market Research | π¬π§ London | 2,176 | 1972 |
| 79 | [SunLife UK](https://www.tamtam.ai/c/sunlife-uk) (sunlife.co.uk)
Providing support and services tailored for individuals aged 50 and above to enhance life quality and enjoyment. | Insurance | π¬π§ Bristol | 2,164 | 1810 |
| 80 | [RICS](https://www.tamtam.ai/c/rics) (bit.ly)
The company promotes professional standards in real estate, construction, and infrastructure to create better places and have positive social impact | Real Estate | π¬π§ London | 2,102 | 1868 |
| 81 | [Unison](https://www.tamtam.ai/c/unison) (unison.org.uk)
This organization is the UK's largest union, providing support, benefits, and services to over 13 million members across various sectors | Non-profit Organizations | π¬π§ London | 2,078 | 1993 |
| 82 | [Places Leisure](https://www.tamtam.ai/c/places-leisure) (placesleisure.org)
A social enterprise managing leisure facilities for local authorities, promoting active lifestyles, healthy communities, and exceeding expectations through partnerships and dedicated teams | Wellness and Fitness Services | π¬π§ Camberley | 2,050 | |
| 83 | [Explore Learning](https://www.tamtam.ai/c/explore-learning) (explorelearning.co.uk)
A leading provider of after-school tuition for 4-16 year olds in the UK, focused on building confident learners hungry for knowledge | E-Learning Providers | π¬π§ Whiteley | 2,032 | 2001 |
| 84 | [Argus Media](https://www.tamtam.ai/c/argus-media) (argusmedia.com)
Provides price assessments, news, analytics, consulting, data tools, and conferences for global energy and commodity market transparency and decision-making. | Information Services | π¬π§ London | 2,024 | 1970 |
| 85 | [Chartered Institute of Arbitrators (Ciarb)](https://www.tamtam.ai/c/chartered-institute-of-arbitrators-ciarb) (ciarb.org)
A charitable organization promoting effective resolution of disputes worldwide through arbitration, mediation, and adjudication with a focus on empowering best practices | Alternative Dispute Resolution | π¬π§ London | 2,006 | 1915 |
| 86 | [Canonical](https://www.tamtam.ai/c/canonical) (canonical.com)
Publishing Ubuntu, popular enterprise Linux, open source delivery, cloud to edge, secure, cost-effective, global community, developer platform, remote-first company. | Software Development | π¬π§ London | 2,001 | 2004 |
| 87 | [Eurosport](https://www.tamtam.ai/c/eurosport) (wbdsports.com)
Leading sport destination in Europe with a focus on live streaming, Olympic coverage, cycling, tennis, and winter sports events, and online sports news | Broadcast Media Production and Distribution | π¬π§ London | 1,989 | 1989 |
| 88 | [Info-Tech Research Group](https://www.tamtam.ai/c/info-tech-research-group) (infotech.com)
This company provides unbiased, highly relevant IT research and tools to help CIOs and IT leaders make strategic, informed decisions for their organizations | IT Services and IT Consulting | π¬π§ London | 1,964 | |
| 89 | [MICHELIN Connected Fleet](https://www.tamtam.ai/c/michelin-connected-fleet) (connectedfleet.michelin.com)
Provide tools and data-driven recommendations to fleet operators for cost reduction, productivity improvement, driver safety, and sustainable fleet management. | Business Consulting and Services | π¬π§ HQ London (Worldwide locations) | 1,961 | 1996 |
| 90 | [The Business of Fashion](https://www.tamtam.ai/c/the-business-of-fashion) (businessoffashion.com)
A global fashion media company providing industry insights, resources, events, and online learning for fashion professionals, students, and entrepreneurs worldwide | Technology, Information and Media | π¬π§ London | 1,949 | 2007 |
| 91 | [Institution of Engineering and Technology (IET)](https://www.tamtam.ai/c/institution-of-engineering-and-technology-iet) (theiet.org)
A global engineering institution with 154,000 members in 148 countries, inspiring and influencing engineers worldwide to create a better world | Non-profit Organizations | π¬π§ Stevenage | 1,940 | |
| 92 | [AM](https://www.tamtam.ai/c/am) (amdigital.co.uk)
Enriching research and teaching with digitized historical and cultural collections from libraries and archives worldwide, offering award-winning resources and education | Book and Periodical Publishing | π¬π§ Marlborough | 1,834 | 1990 |
| 93 | [Tottenham Hotspur Football Club](https://www.tamtam.ai/c/tottenham-hotspur-football-club) (tottenhamhotspur.com)
A world-famous football club based in London, competing in the English Premier League with a strong business model and world-class facilities | Spectator Sports | π¬π§ London | 1,827 | 1882 |
| 94 | [E.ON Next](https://www.tamtam.ai/c/e-on-next) (eonnext.com)
Helping customers reduce energy bills and environmental impact by facilitating the energy transition and promoting CO2 savings in the UK. | Utilities | π¬π§ London | 1,792 | 2020 |
| 95 | [Tate](https://www.tamtam.ai/c/tate) (tate.org.uk)
A public institution with four major galleries showcasing British and international art to increase public enjoyment and understanding | Museums, Historical Sites, and Zoos | π¬π§ London | 1,743 | 1897 |
| 96 | [Autotrader](https://www.tamtam.ai/c/autotrader) (careers.autotrader.co.uk)
Leading UK automotive marketplace connecting buyers and sellers of cars, e-bikes, caravans, simplifying complex vehicle purchasing journeys. | Software Development | π¬π§ Manchester | 1,706 | |
| 97 | [Warrington Borough Council](https://www.tamtam.ai/c/warrington-borough-council) (warrington.gov.uk)
Local government focused on economic growth, social inclusion, community resilience, workforce wellbeing, and supporting vulnerable populations within the borough. | Government Administration | π¬π§ Warrington | 1,680 | 1974 |
| 98 | [Freedom Leisure](https://www.tamtam.ai/c/freedom-leisure) (freedom-leisure.co.uk)
A charitable leisure trust promoting healthy lifestyles through over 100 venues in England and Wales, offering affordable, accessible facilities for all | Wellness and Fitness Services | π¬π§ East Hoathly | 1,675 | 2002 |
| 99 | [Hotel Chocolat](https://www.tamtam.ai/c/hotel-chocolat) (hotelchocolat.com)
Luxury British cacao grower and chocolatier focusing on originality, authenticity, and ethics, with eco-conscious practices and innovative farming initiatives | Retail | π¬π§ Royston | 1,648 | 2004 |
| 100 | [Novakid Inc](https://www.tamtam.ai/c/novakid-inc) (novakidschool.com)
An innovative online learning platform offering English lessons for kids, combining game-based methods, AI technology, and immersive experiences for diverse learning needs | E-Learning Providers | π¬π§ London | 1,622 | 2017 |
## 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 11, 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)
- [Distributors and wholesalers in the United Kingdom](https://www.tamtam.ai/l/distributors-and-wholesalers-united-kingdom) (1,060)
- [Marketing and communications agencies in the United Kingdom](https://www.tamtam.ai/l/marketing-agencies-united-kingdom) (984)
## The same list elsewhere in United Kingdom
- [Subscription businesses in Scotland](https://www.tamtam.ai/l/subscription-businesses-scotland) (37)
- [Subscription businesses in London](https://www.tamtam.ai/l/subscription-businesses-london) (544)
- [Subscription businesses in Manchester](https://www.tamtam.ai/l/subscription-businesses-manchester) (35)
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Source: https://www.tamtam.ai/l/subscription-businesses-united-kingdom