# Top 100 data and analytics companies in the United Kingdom

Tamtam tracks 505 data and analytics companies headquartered in the United Kingdom. This list ranks the 100 largest by number of employees on LinkedIn, led by RELX, LSEG and Kantar. Their median headcount is 1,641. Half of them were founded in 1999 or later. The most common headquarters are London (64) and Reading (2).

These large UK companies specialize in data and analytics across diverse sectors. RELX provides information-based analytics for professionals, LSEG offers financial indexing and analytic services, and Kantar is a global leader in marketing data. Clarivate delivers trusted intelligence in academia, life sciences, and intellectual property.

A clear pattern is the concentration of headquarters in London, with companies like Publicis Media, Smollan, and Apex Group Ltd (UK & Ireland) based there. Other significant players include AVEVA in Cambridge, which provides industrial software solutions, and EV in Norwich, specializing in well diagnosis for the energy sector.

🇬🇧 United Kingdom · 100 companies · Updated Nov 12, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [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 |  |
| 2 | [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 |  |
| 3 | [Kantar](https://www.tamtam.ai/c/kantar) (kantar.com)<br>Global leader in marketing data and analytics with deep expertise, innovative technology, and insights to help clients understand people and drive growth worldwide | Market Research | 🇬🇧 London | 24,976 |  |
| 4 | [Smollan](https://www.tamtam.ai/c/smollan) (smollan.com)<br>Partners with brands and retailers, building solutions that drive growth and create opportunities at the point of purchase. | Retail | 🇬🇧 London | 13,502 | 1931 |
| 5 | [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 |  |
| 6 | [Publicis Media](https://www.tamtam.ai/c/publicis-media) (publicisgroupe.com)<br>A global media company within Publicis Groupe, employing data-driven solutions and platform-based technologies to deliver client value and drive growth internationally | Advertising Services | 🇬🇧 London | 11,033 |  |
| 7 | [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 |
| 8 | [Apex Group Ltd (UK & Ireland)](https://www.tamtam.ai/c/apex-group-ltd-uk-and-ireland) (apexgroup.com)<br>A global financial services provider with offices in over 50 countries, offering a wide range of services to asset managers, capital markets, and family offices | Financial Services | 🇬🇧 London | 9,281 | 2003 |
| 9 | [AVEVA](https://www.tamtam.ai/c/aveva) (aveva.com)<br>It provides industrial software solutions that enhance collaboration, optimize operations, and drive sustainability for enterprises across various sectors globally. | Software Development | 🇬🇧 Cambridge | 7,630 |  |
| 10 | [Acuity Analytics](https://www.tamtam.ai/c/acuity-analytics) (acuityanalytics.com)<br>Provides bespoke research, analytics, and technology solutions to financial services, helping institutions operate efficiently and unlock human capital to drive revenue. | Financial Services | 🇬🇧 London | 7,619 | 2003 |
| 11 | [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 |  |
| 12 | [PHD](https://www.tamtam.ai/c/phd) (phdmedia.com)<br>Global media agency network combining data, technology, and human expertise to create innovative campaigns and transform brand experiences worldwide. | Advertising Services | 🇬🇧 Bankside | 5,700 | 1990 |
| 13 | [EV](https://www.tamtam.ai/c/ev) (evcam.com)<br>Specializing in well diagnosis, this company provides visual information to help operators understand and resolve wellbore issues, reducing risk and increasing operational performance | Energy Technology | 🇬🇧 Norwich | 5,696 | 2000 |
| 14 | [ION](https://www.tamtam.ai/c/ion) (iongroup.com)<br>Innovative company providing trading and workflow automation software to financial institutions, corporations, and governments, empowering decision-making and accelerating processes | Software Development | 🇬🇧 London | 5,591 | 1998 |
| 15 | [LSEG Data & Analytics](https://www.tamtam.ai/c/lseg-data-and-analytics) (lseg.com)<br>A global provider of financial markets data and infrastructure, enabling customers to gain insights through data, feeds, analytics, and workflow solutions | Financial Services | 🇬🇧 London | 5,147 |  |
| 16 | [YouGov](https://www.tamtam.ai/c/yougov) (yougov.com)<br>An international online research and analytics technology group providing unparalleled consumer insights for brands, media owners, and agencies worldwide | Market Research | 🇬🇧 London | 4,691 | 2000 |
| 17 | [Hexagon Manufacturing Intelligence](https://www.tamtam.ai/c/hexagon-manufacturing-intelligence) (hexagon.com)<br>The company offers hardware and software solutions to empower makers to design, test, produce, and optimize products throughout the entire value chain | Measuring and Control Instrument Manufacturing | 🇬🇧 Cobham | 4,300 | 2001 |
| 18 | [Fitch Group, Inc.](https://www.tamtam.ai/c/fitch-group-inc) (fitch.group)<br>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 | 🇬🇧 London | 4,203 | 1913 |
| 19 | [Playtech](https://www.tamtam.ai/c/playtech) (playtech.com)<br>Leading software and services supplier for the gambling industry, offering omni-channel solutions for online, mobile, and retail operations, including financial trading. | Software Development | 🇬🇧 London | 3,735 | 1999 |
| 20 | [Worldpanel](https://www.tamtam.ai/c/worldpanel) (worldpanelbynumerator.com)<br>Experts in global shopper and consumer behavior providing analytics for retail and marketing strategies, enabling smarter decisions for a better world | Market Research | 🇬🇧 London | 3,437 |  |
| 21 | [Stats Perform](https://www.tamtam.ai/c/stats-perform) (statsperform.com)<br>Global leader in sports technology providing unrivaled AI-powered sports data for media, tech, betting, and team performance solutions | Spectator Sports | 🇬🇧 London | 3,359 |  |
| 22 | [BAE Systems Digital Intelligence](https://www.tamtam.ai/c/bae-systems-digital-intelligence) (baesystems.com)<br>A global team of over 4,500 experts in digital, cyber, and intelligence, collaborating to collect and analyze complex data for governments and businesses | Defense and Space Manufacturing | 🇬🇧 Guildford | 3,252 | 1971 |
| 23 | [Toluna](https://www.tamtam.ai/c/toluna) (tolunacorporate.com)<br>Global leader providing advanced technology and comprehensive solutions for data-driven market research, leveraging AI and extensive global panels. | Market Research | 🇬🇧 London | 3,218 | 2000 |
| 24 | [Genius Sports](https://www.tamtam.ai/c/genius-sports-london) (geniussports.com)<br>This company delivers technology and expertise to sports, betting, and media partners worldwide, enhancing data collection, fan engagement, and overall performance | Software Development | 🇬🇧 London | 3,054 | 2001 |
| 25 | [dunnhumby](https://www.tamtam.ai/c/dunnhumby) (dunnhumby.com)<br>Connects retailers and brands, applying AI-enabled science, software, and expertise to customer loyalty, media, and category management for business growth. | Technology, Information and Media | 🇬🇧 Brook Green | 2,990 | 1989 |
| 26 | [Ocado Technology](https://www.tamtam.ai/c/ocado-technology) (careers.ocadogroup.com)<br>Revolutionizing online retail with cutting-edge technology in robotics, IoT, cloud platforms, big data, and machine learning to create world-class systems | Software Development | 🇬🇧 Hatfield | 2,894 | 2000 |
| 27 | [Two Circles](https://www.tamtam.ai/c/two-circles) (twocircles.com)<br>Management of extensive fan data to enhance audience engagement and increase revenue for leading sports and entertainment organizations worldwide. | Marketing Services | 🇬🇧 London | 2,877 |  |
| 28 | [TradingView](https://www.tamtam.ai/c/tradingview) (tradingview.com)<br>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 | 🇬🇧 London | 2,761 | 2011 |
| 29 | [ICAP](https://www.tamtam.ai/c/icap) (tpicap.com)<br>A leading markets operator providing electronic execution and information services for wholesale market participants, facilitating capital flow and supporting borrowing needs | Financial Services | 🇬🇧 London | 2,750 |  |
| 30 | [GlobalData Plc](https://www.tamtam.ai/c/globaldata-plc) (globaldata.com)<br>A leading information services company helps organizations and decision-makers predict the future, make informed decisions, and gain a competitive edge | Information Services | 🇬🇧 London | 2,711 | 2010 |
| 31 | [HM Land Registry](https://www.tamtam.ai/c/hm-land-registry) (gov.uk)<br>This UK government department registers land and property ownership in England and Wales, safeguarding assets worth over £8 trillion | Government Administration | 🇬🇧 Croydon | 2,709 | 1862 |
| 32 | [Advantage Smollan](https://www.tamtam.ai/c/advantage-smollan) (advantagesmollan.com)<br>Local experts providing consistent service and strong client relationships, leveraging global insights, innovation, and technology for growth. | Advertising Services | 🇬🇧 Winnersh | 2,706 |  |
| 33 | [SHL](https://www.tamtam.ai/c/shl) (shl.com)<br>Maximizes employee potential with science and technology. Supports hiring, development, and talent mobility decisions through data-driven people insights and assessments. | Software Development | 🇬🇧 Thames Ditton | 2,661 | 1977 |
| 34 | [Wood Mackenzie](https://www.tamtam.ai/c/wood-mackenzie) (woodmac.com)<br>Provider of data, analytics, and consultancy services for renewables, energy, and natural resources sectors supporting investment decisions. | Information Services | 🇬🇧 Edinburgh | 2,472 |  |
| 35 | [Third Bridge Group](https://www.tamtam.ai/c/third-bridge-group) (thirdbridge.com)<br>A global investment research firm delivering unique insights to help investment firms make better decisions through a team of 1,200+ employees | Information Services | 🇬🇧 London | 2,438 | 2007 |
| 36 | [Keyloop](https://www.tamtam.ai/c/keyloop) (keyloop.com)<br>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 | 🇬🇧 Reading | 2,435 |  |
| 37 | [Dialectica](https://www.tamtam.ai/c/dialectica) (dialectica.io)<br>A B2B information services firm connecting professionals with industry experts worldwide through a trusted knowledge-sharing platform, recognized for growth and workplace excellence | Information Services | 🇬🇧 London | 2,400 | 2015 |
| 38 | [Qube Research & Technologies](https://www.tamtam.ai/c/qube-research-and-technologies) (qube-rt.com)<br>Global quant and systematic investment manager using technology and data for scientific approach to investing, driving innovation for high quality returns Multiple open positions available | Financial Services | 🇬🇧 London | 2,393 | 2018 |
| 39 | [London Stock Exchange](https://www.tamtam.ai/c/london-stock-exchange) (londonstockexchange.com)<br>Global financial marketplace providing extensive access to capital markets and liquidity across multiple asset classes for international businesses, governments, and investment funds. | Financial Services | 🇬🇧 London | 2,358 | 1698 |
| 40 | [Met Office](https://www.tamtam.ai/c/met-office) (metoffice.gov.uk)<br>A world leader in weather and climate services, with global coverage and ties to industries, government, media, and disaster contingency | Environmental Services | 🇬🇧 Exeter | 2,303 | 1854 |
| 41 | [Euromonitor International](https://www.tamtam.ai/c/euromonitor-international) (euromonitor.com)<br>Provides comprehensive global data analytics and research on markets, industries, economies, and consumers to support strategic business growth decisions. | Market Research | 🇬🇧 London | 2,176 | 1972 |
| 42 | [National Energy System Operator](https://www.tamtam.ai/c/national-energy-system-operator) (neso.energy)<br>Central organization managing energy systems, ensuring reliable, clean, affordable energy access, driving sustainable energy future globally. | Utilities | 🇬🇧 Warwick | 2,146 | 2024 |
| 43 | [FD Technologies](https://www.tamtam.ai/c/fd-technologies) (fdtechnologies.com)<br>A data-driven group that offers technology, services in capital markets, and predictive marketing solutions to drive organizations forward globally | IT Services and IT Consulting | 🇬🇧 Newry | 2,025 | 1996 |
| 44 | [CACI Ltd](https://www.tamtam.ai/c/caci-ltd) (caci.co.uk)<br>Provides data, marketing, IT solutions, software, consulting services, and managed services to public and private sector clients. Improves sales, marketing, operations, and reduces costs. | Business Consulting and Services | 🇬🇧 London | 2,025 | 1975 |
| 45 | [Argus Media](https://www.tamtam.ai/c/argus-media) (argusmedia.com)<br>Provides price assessments, news, analytics, consulting, data tools, and conferences for global energy and commodity market transparency and decision-making. | Information Services | 🇬🇧 London | 2,024 | 1970 |
| 46 | [Clarksons](https://www.tamtam.ai/c/clarksons) (clarksons.com)<br>Global maritime services company offering shipbroking, research, finance, digital tools, port services, and green advisory services for smarter, sustainable shipping solutions | Maritime Transportation | 🇬🇧 St. Katharine Docks | 1,991 | 1852 |
| 47 | [MICHELIN Connected Fleet](https://www.tamtam.ai/c/michelin-connected-fleet) (connectedfleet.michelin.com)<br>Provide tools and data-driven recommendations to fleet operators for cost reduction, productivity improvement, driver safety, and sustainable fleet management. | Business Consulting and Services | 🇬🇧 HQ London (Worldwide locations) | 1,961 | 1996 |
| 48 | [CFC](https://www.tamtam.ai/c/cfc) (cfc.com)<br>Specialist insurance provider leading in cyber risk, utilizing technology and data science for faster underwriting and protection of global businesses | Insurance | 🇬🇧 London | 1,896 | 1999 |
| 49 | [Ipsos in the UK](https://www.tamtam.ai/c/ipsos-in-the-uk) (ipsos.com)<br>A global research firm passionate about understanding people, brands, and society, providing insightful knowledge to inspire impactful decision-making for clients | Market Research | 🇬🇧 London | 1,697 | 1969 |
| 50 | [Hawk-Eye Innovations](https://www.tamtam.ai/c/hawk-eye-innovations) (hawkeyeinnovations.com)<br>Innovative sports technology company specializing in officiating, production, tracking, and analytics tools to make sports fairer, safer, and more engaging | Technology, Information and Internet | 🇬🇧 Basingstoke | 1,641 | 1999 |
| 51 | [CF](https://www.tamtam.ai/c/cf) (carnallfarrar.com)<br>This company specializes in healthcare improvement through consulting, data services, and products for health systems and the life sciences industry | Business Consulting and Services | 🇬🇧 London | 1,499 | 2013 |
| 52 | [XPS Group](https://www.tamtam.ai/c/xps-group) (xpsgroup.com)<br>Leading UK pension consulting and administration business providing services to over 1,500 schemes, with awards for third-party administration, consultancy, and diversity | Financial Services | 🇬🇧 Reading | 1,492 | 2018 |
| 53 | [Euromoney Institutional Investor](https://www.tamtam.ai/c/euromoney-institutional-investor) (delinian.com)<br>Global B2B information-services business providing actionable data, analysis, intelligence, and market participant access across multiple international markets. | Information Services | 🇬🇧 London | 1,487 |  |
| 54 | [Connect](https://www.tamtam.ai/c/connect-london) (weconnect.tech)<br>Communication experts providing solutions in Contact Centre, Unified Communications, and Network Services, delivering digital transformation through bespoke strategies for businesses globally | IT Services and IT Consulting | 🇬🇧 London | 1,387 | 1990 |
| 55 | [GBG Plc](https://www.tamtam.ai/c/gbg-plc) (gbg.com)<br>Combines global data and innovative technology to verify identities and locations, protecting against digital crime and supporting business growth. | IT Services and IT Consulting | 🇬🇧 Chester | 1,358 | 1989 |
| 56 | [Kantar Media](https://www.tamtam.ai/c/kantar-media) (fifty5blue.com)<br>Provides cross-media audience measurement, data analytics, targeting, and advertising intelligence services to support informed decision-making and business growth globally. | Marketing Services | 🇬🇧 London | 1,340 |  |
| 57 | [Tullett Prebon](https://www.tamtam.ai/c/tullett-prebon) (tpicap.com)<br>A global interdealer broker facilitating trading activities in financial and energy sectors through various platforms, market data services, and award-winning brokerage solutions | Financial Services | 🇬🇧 London | 1,332 |  |
| 58 | [Ordnance Survey](https://www.tamtam.ai/c/ordnance-survey) (ordnancesurvey.co.uk)<br>Provide location data and mapping solutions to governments, businesses, and individuals to enhance safety, security, and decision-making. | IT Services and IT Consulting | 🇬🇧 Southampton | 1,296 | 1791 |
| 59 | [FE fundinfo](https://www.tamtam.ai/c/fe-fundinfo) (fefundinfo.com)<br>By providing accurate data, technology solutions, research, and expert insights, we connect the fund management industry to inform better investment decisions | Financial Services | 🇬🇧 London | 1,216 |  |
| 60 | [Aurora Energy Research](https://www.tamtam.ai/c/aurora-energy-research) (auroraer.com)<br>Provide power market forecasting, analytics, advisory support, and software solutions to support investment and financing decisions in energy sector. | Research Services | 🇬🇧 Oxford | 1,188 | 2013 |
| 61 | [CDP](https://www.tamtam.ai/c/cdp) (cdp.net)<br>Global non-profit providing an independent platform for environmental data disclosure, enabling transparency and informed Earth-positive decisions worldwide. | Environmental Services | 🇬🇧 London | 1,187 | 2000 |
| 62 | [G-Research](https://www.tamtam.ai/c/g-research) (gresearch.com)<br>A leading quantitative research and technology firm tackling big questions in finance using machine learning and big data for predicting market movements | Financial Services | 🇬🇧 London | 1,153 | 2001 |
| 63 | [QS Quacquarelli Symonds](https://www.tamtam.ai/c/qs-quacquarelli-symonds) (qs.com)<br>Global provider of higher education and career solutions, offering independent data and insights to help students make informed decisions at all academic stages | Higher Education | 🇬🇧 London | 1,147 | 1990 |
| 64 | [Merit Data & Technology India](https://www.tamtam.ai/c/merit-data-and-technology-india) (meritdata-tech.com)<br>A company that provides marketing data, product data, customized software, and marketing automation to help B2B brands embrace the challenges of the future | Information Services | 🇬🇧 London | 1,128 | 2004 |
| 65 | [Smartstream](https://www.tamtam.ai/c/smartstream) (smart.stream)<br>Provides financial institutions with accurate, timely data insights to streamline operations, reduce costs, and ensure regulatory compliance confidently. | Financial Services | 🇬🇧 London | 1,114 | 2000 |
| 66 | [Companies House](https://www.tamtam.ai/c/companies-house) (gov.uk)<br>This company is an executive agency that incorporates and dissolves limited companies, registers company information, and makes it accessible to the public | Government Administration | 🇬🇧 Cardiff | 1,110 |  |
| 67 | [Brandwatch](https://www.tamtam.ai/c/brandwatch) (brandwatch.com)<br>It provides consumer intelligence, social media management, and influencer management to help businesses understand and engage with their customers effectively. | Software Development | 🇬🇧 London | 1,100 |  |
| 68 | [Onclusive](https://www.tamtam.ai/c/onclusive) (onclusive.com)<br>Global PR and Communications partner offering data-driven insights, consultancy, workflow tools, and media monitoring to elevate performance and prove value | Public Relations and Communications Services | 🇬🇧 London | 1,098 |  |
| 69 | [PEI](https://www.tamtam.ai/c/pei-london) (pei.group)<br>Providing market insight, data, and networking services to investment professionals in private real estate, infrastructure, equity, debt, and sustainable investments. | Financial Services | 🇬🇧 London | 1,076 | 2001 |
| 70 | [Faculty](https://www.tamtam.ai/c/faculty) (faculty.ai)<br>The company develops and implements safe AI systems integrating human and artificial intelligence for optimized performance | Technology, Information and Internet | 🇬🇧 London | 1,073 | 2014 |
| 71 | [Reed Business Information](https://www.tamtam.ai/c/reed-business-information) (risk.lexisnexis.com)<br>Provides innovative data analytics, decision tools, and management services across industries to reduce risk, ensure compliance, and improve operations. | IT Services and IT Consulting | 🇬🇧 | 1,061 |  |
| 72 | [Deltatre](https://www.tamtam.ai/c/deltatre) (deltatre.com)<br>Global leader in fan-first digital experiences offering innovative products/services for sports, media, and entertainment, reaching over one billion minutes of digital content annually | Software Development | 🇬🇧 London | 1,055 | 1986 |
| 73 | [OAG](https://www.tamtam.ai/c/oag) (oag.com)<br>Provides an industry-first single source for supply, demand, and pricing data to empower the global travel industry with high-quality, relevant datasets for the entire journey. | Airlines and Aviation | 🇬🇧 Luton | 1,010 | 1929 |
| 74 | [ICIS](https://www.tamtam.ai/c/icis) (icis.com)<br>Global provider of independent commodity intelligence services, connecting data, markets, and customers to optimize business decisions and resource management worldwide | Information Services | 🇬🇧 London | 969 |  |
| 75 | [WGSN](https://www.tamtam.ai/c/wgsn) (wgsn.com)<br>Global trend forecasting company helping brands create products for future consumers through consumer insights, design forecasts, data analytics, and expert advisory services | Information Services | 🇬🇧 London | 966 | 1998 |
| 76 | [Ab Initio Software](https://www.tamtam.ai/c/ab-initio-software) (abinitio.com)<br>Development of a high-performance, scalable data processing and analysis platform combined with expert implementation and support across diverse industries. | Software Development | 🇬🇧 | 965 | 1995 |
| 77 | [Fitch Solutions](https://www.tamtam.ai/c/fitch-solutions) (fitchsolutions.com)<br>Provides specialized financial data, analytics, and expert insights on credit risk, markets, ESG, and investment strategies worldwide. | Information Services | 🇬🇧 London | 965 | 2018 |
| 78 | [Fastmarkets](https://www.tamtam.ai/c/fastmarkets) (fastmarkets.com)<br>A leading global provider of price reporting, analytics, and events services for key commodity markets, striving for market transparency and sustainability | Information Services | 🇬🇧 London | 950 | 1882 |
| 79 | [IMDEX](https://www.tamtam.ai/c/imdex) (imdex.com)<br>The company provides expert geoscience solutions for the global mining technology industry, enabling safe, faster, and more accurate drilling operations | Mining | 🇬🇧 Perth | 913 | 1980 |
| 80 | [Achilles Information Limited](https://www.tamtam.ai/c/achilles-information-limited) (achilles.com)<br>Providing supply chain transparency, ESG reporting, carbon management, and risk analysis to support global organizations' sustainability and compliance goals. | Business Intelligence Platforms | 🇬🇧 Abingdon | 911 | 1991 |
| 81 | [KBC A Yokogawa Company](https://www.tamtam.ai/c/kbc-a-yokogawa-company) (kbc.global)<br>A company specializing in Digital Energy Management & Carbon Emissions Management, offering innovative technologies for low-carbon processes and automated surveillance for sustainability goals | Oil and Gas | 🇬🇧 Walton-on-Thames | 902 | 1979 |
| 82 | [Oxane Partners](https://www.tamtam.ai/c/oxane-partners) (oxanepartners.com)<br>A technology-driven solutions provider for private markets, offering transformative solutions for investment analysis and management across all asset classes | Financial Services | 🇬🇧 London | 898 | 2014 |
| 83 | [Kynetec](https://www.tamtam.ai/c/kynetec) (kynetec.com)<br>Global leader in providing data, analytics, and insights for agriculture, animal health, and sustainability to empower clients in making informed decisions and driving growth | Market Research | 🇬🇧 Newbury | 897 | 2002 |
| 84 | [Quantexa](https://www.tamtam.ai/c/quantexa) (quantexa.com)<br>Global platform connecting siloed systems to visualize complex relationships, providing single views of data for risk mitigation and strategic organizational decision making. | Software Development | 🇬🇧 London | 895 | 2016 |
| 85 | [NHS South, Central and West](https://www.tamtam.ai/c/nhs-south-central-and-west) (scwcsu.nhs.uk)<br>Provides support and transformation services to health and care systems, improving outcomes for people, communities, and populations. | Hospitals and Health Care | 🇬🇧 Eastleigh | 889 | 2015 |
| 86 | [Kantar Operations](https://www.tamtam.ai/c/kantar-operations) (kantar.com)<br>Kantar Operations delivers competitive advantage through innovation, automation, and expertise with global local teams, delivery centers, and specialists | Market Research | 🇬🇧 Tooley Street | 886 |  |
| 87 | [SAI](https://www.tamtam.ai/c/sai-london) (saigroups.co.uk)<br>Overlays machine vision AI on existing CCTV feeds for retailers, preventing theft, recapturing lost sales, and improving operations and safety for customers and employees. | Software Development | 🇬🇧 London | 857 | 2018 |
| 88 | [Computershare UK](https://www.tamtam.ai/c/computershare-uk) (computershare.com)<br>Global leader providing transfer agency, share registration, employee equity plans, mortgage servicing, proxy solicitation, stakeholder communications, and diversified financial services worldwide | Financial Services | 🇬🇧 Bristol | 838 |  |
| 89 | [STEM](https://www.tamtam.ai/c/stem) (inizio.com)<br>Inizio Advisory provides data-driven solutions for pharmaceutical companies to optimize brand strategy alignment, improve ROI, and accelerate brands' performance | Pharmaceutical Manufacturing | 🇬🇧 London | 832 |  |
| 90 | [VML Enterprise Solutions](https://www.tamtam.ai/c/vml-enterprise-solutions) (vml.com)<br>Global company offering end-to-end solutions for retailers and brands to drive transactions and customer loyalty through commerce, technology, data, and experience | IT Services and IT Consulting | 🇬🇧 London | 806 | 2019 |
| 91 | [Lead Forensics](https://www.tamtam.ai/c/lead-forensics) (leadforensics.com)<br>It provides software that identifies anonymous website visitors, offering businesses valuable information to convert them into actionable sales-ready leads. | Software Development | 🇬🇧 London | 800 | 2009 |
| 92 | [Chambers and Partners](https://www.tamtam.ai/c/chambers-and-partners) (chambers.com)<br>Provides independent rankings and insights on law firms and lawyers worldwide through comprehensive research and analysis across jurisdictions. | Legal Services | 🇬🇧 London | 799 | 1990 |
| 93 | [CRU](https://www.tamtam.ai/c/cru-london) (crugroup.com)<br>Delivers independent, expert intelligence into the global commodities markets, drawing on data, insights, and strategic thinking to help businesses navigate complexities. | Business Consulting and Services | 🇬🇧 London | 790 | 1969 |
| 94 | [JATO Dynamics](https://www.tamtam.ai/c/jato-dynamics) (jato.com)<br>provides fast, accurate automotive data and analysis supporting critical decision making for global mobility leaders and market transparency | Information Services | 🇬🇧 Uxbridge | 783 |  |
| 95 | [Verian Group](https://www.tamtam.ai/c/verian-group) (veriangroup.com)<br>Leading agency providing research, evidence, evaluation, and communications services to government and public realm clients to solve public policy challenges. | Professional Services | 🇬🇧 London | 781 |  |
| 96 | [BBC Monitoring](https://www.tamtam.ai/c/bbc-monitoring) (monitoring.bbc.co.uk)<br>Global media tracking, translation, analysis, and summarization service providing essential insights for various entities since 1939 in over 100 languages | Broadcast Media Production and Distribution | 🇬🇧 London | 773 | 1939 |
| 97 | [Microlise](https://www.tamtam.ai/c/microlise) (microlise.com)<br>A company that generates actionable insights from connected assets for fleet operators and product manufacturers through integrated solutions for location, performance, safety, and compliance | IT Services and IT Consulting | 🇬🇧 Nottingham | 766 | 1982 |
| 98 | [GWI](https://www.tamtam.ai/c/gwi) (gwi.com)<br>This company provides trusted consumer insights globally for brands, agencies, and media They offer unique studies and custom research services | Data Infrastructure and Analytics | 🇬🇧 London | 758 | 2009 |
| 99 | [Incubeta](https://www.tamtam.ai/c/incubeta) (incubeta.com)<br>A global team of 800+ experts across 20 offices offering digital services to unlock business growth for clients like Google, Hyundai, and Netflix | Advertising Services | 🇬🇧 London | 750 | 2001 |
| 100 | [FACE](https://www.tamtam.ai/c/face-london) (pulsarplatform.com)<br>A company has merged with Pulsar for global expansion Visit the press release for more information Follow Pulsar Platform on LinkedIn | Market Research | 🇬🇧 London | 734 | 2003 |

## 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

- [Data and analytics companies in London](https://www.tamtam.ai/l/data-analytics-companies-london) (302)

## The same list elsewhere

- [Data and analytics companies in the world](https://www.tamtam.ai/l/data-analytics-companies-in-the-world) (4,943)
- [Data and analytics companies in Europe](https://www.tamtam.ai/l/data-analytics-companies-in-europe) (2,591)

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Source: https://www.tamtam.ai/l/data-analytics-companies-united-kingdom