# 30 leading Market Research companies in London
Tamtam tracks 37 Market Research companies headquartered in London. This list ranks the 30 largest by number of employees on LinkedIn, led by Kantar, YouGov and Worldpanel. Their median headcount is 404. Half of them were founded in 2000 or later.
London is home to a significant concentration of market research companies. These firms range from large, established international groups to mid-sized firms and younger companies founded in the 21st century. They offer a wide array of services, from consumer insights to data analytics and strategic advice.
Among them, Kantar is a global leader in marketing data and analytics. YouGov specializes in online research, while Euromonitor International provides global data on markets and industries. Toluna offers advanced technology for data-driven research, and Silverlight Research connects clients with industry experts. Many of these companies, such as Mintel and Ipsos in the UK, were founded in the late 20th century, indicating a sustained presence of market research expertise in the city.
π¬π§ London Β· 30 companies Β· Updated Nov 15, 2026
| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Kantar](https://www.tamtam.ai/c/kantar) (kantar.com)
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 | π¬π§ London | 24,976 | |
| 2 | [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 |
| 3 | [Worldpanel](https://www.tamtam.ai/c/worldpanel) (worldpanelbynumerator.com)
Experts in global shopper and consumer behavior providing analytics for retail and marketing strategies, enabling smarter decisions for a better world | Market Research | π¬π§ London | 3,437 | |
| 4 | [Toluna](https://www.tamtam.ai/c/toluna) (tolunacorporate.com)
Global leader providing advanced technology and comprehensive solutions for data-driven market research, leveraging AI and extensive global panels. | Market Research | π¬π§ London | 3,218 | 2000 |
| 5 | [Silverlight Research](https://www.tamtam.ai/c/silverlight-research) (silverlightresearch.com)
Provides compliant access to independent industry experts for institutional investors, private equity firms, and corporate strategy teams for due diligence and market intelligence. | Market Research | π¬π§ London | 2,643 | 2017 |
| 6 | [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 |
| 7 | [Ipsos in the UK](https://www.tamtam.ai/c/ipsos-in-the-uk) (ipsos.com)
A global research firm passionate about understanding people, brands, and society, providing insightful knowledge to inspire impactful decision-making for clients | Market Research | π¬π§ London | 1,697 | 1969 |
| 8 | [Mintel](https://www.tamtam.ai/c/mintel) (mintel.com)
This company provides market intelligence through research, analysis, product insights, and competitive intelligence to help businesses navigate the consumer landscape and grow | Market Research | π¬π§ London | 1,638 | 1972 |
| 9 | [FACE](https://www.tamtam.ai/c/face-london) (pulsarplatform.com)
A company has merged with Pulsar for global expansion Visit the press release for more information Follow Pulsar Platform on LinkedIn | Market Research | π¬π§ London | 734 | 2003 |
| 10 | [MMR Research](https://www.tamtam.ai/c/mmr-research) (mmr-research.com)
This company specializes in designing solutions for a variety of industries to create engaging brands that resonate with consumers | Market Research | π¬π§ London | 657 | 1989 |
| 11 | [Infiniti Research Ltd.](https://www.tamtam.ai/c/infiniti-research-ltd) (infinitiresearch.com)
Leading provider of market and customer intelligence solutions, offering research and advisory services through unique methods to deliver actionable insights and robust market data. | Market Research | π¬π§ London | 582 | 2003 |
| 12 | [STRAT7](https://www.tamtam.ai/c/strat7) (strat7.com)
Helps clients win at change, providing real-time insights into customer behavior, equipping brands with actionable strategies for customer-centric growth. | Market Research | π¬π§ London | 465 | |
| 13 | [Savanta](https://www.tamtam.ai/c/savanta) (savanta.com)
A fast-growing data, market research, and advisory company providing tailored solutions, data analysis, and intelligence products to help clients make better decisions | Market Research | π¬π§ London | 462 | 2019 |
| 14 | [IFF Research](https://www.tamtam.ai/c/iff-research) (iffresearch.com)
A social and market research agency established in 1965, specializing in helping partners make informed decisions across various sectors through tailored and independent research | Market Research | π¬π§ London | 436 | 1965 |
| 15 | [MRS](https://www.tamtam.ai/c/mrs) (mrs.org.uk)
Supports individuals who use, generate, or interpret evidence for informed decisions in business, government, and public policy, across market, social, and opinion research. | Market Research | π¬π§ London | 404 | 1946 |
| 16 | [RONIN International](https://www.tamtam.ai/c/ronin-international) (ronin.com)
Independent B2B market research company specializing in business, healthcare, and tech studies, working globally across the world in over forty languages. | Market Research | π¬π§ London | 383 | 1998 |
| 17 | [The Business Research Company](https://www.tamtam.ai/c/the-business-research-company) (thebusinessresearchcompany.com)
Market Intelligence company specializing in company, market, and consumer research across various industries with a global team of research experts | Market Research | π¬π§ London | 318 | 2012 |
| 18 | [Research Partnership](https://www.tamtam.ai/c/research-partnership) (inizio.com)
A world-leading market research partner in health and life sciences providing custom and syndicated research for actionable insights and strategic decision-making | Market Research | π¬π§ London | 267 | |
| 19 | [System1](https://www.tamtam.ai/c/system1) (system1group.com)
The company offers solutions to predict commercial success of ads and ideas, measure brand impact, and provide expert guidance for improving effectiveness | Market Research | π¬π§ London | 231 | 1999 |
| 20 | [Hall & Partners](https://www.tamtam.ai/c/hall-and-partners) (hallandpartners.com)
An insight agency blending creativity with science to uncover unique human truths tailored to individual brands for strategic marketing decision-making | Market Research | π¬π§ London | 220 | 1992 |
| 21 | [B2B International](https://www.tamtam.ai/c/b2b-international) (b2binternational.com)
A global B2B market research agency offering services like branding, competitive intelligence, customer satisfaction, and market entry to help companies succeed internationally | Market Research | π¬π§ London | 213 | 1998 |
| 22 | [RFI Global](https://www.tamtam.ai/c/rfi-global) (rfi.global)
RFI Global is a global data and insights company specializing in financial services, providing actionable insights to clients worldwide | Market Research | π¬π§ London | 207 | 2006 |
| 23 | [Kudos Research](https://www.tamtam.ai/c/kudos-research) (ronin.com)
Market research company offering B2B and consumer telephone data collection services in over 80 countries, with native language interviewers and expertise in quantitative research | Market Research | π¬π§ London | 195 | 1986 |
| 24 | [VERVE](https://www.tamtam.ai/c/verve-london) (vervevero.com)
A global insights consultancy specializing in Human, Cultural, and Artificial Intelligence to provide dynamic solutions for any business challenge | Market Research | π¬π§ London | 176 | 2008 |
| 25 | [Walr](https://www.tamtam.ai/c/walr) (walr.com)
Combining smart technology and expert knowledge for efficient online research Fieldwork specialists with centuries of experience, prioritizing customer satisfaction through innovative technology | Market Research | π¬π§ London | 175 | 2020 |
| 26 | [Europanel](https://www.tamtam.ai/c/europanel) (europanel.com)
Europanelβ’ offers global consumer behavior insights from top marketing companies to inspire growth strategies with high-quality consumer panel data | Market Research | π¬π§ London | 151 | |
| 27 | [Black Swan Data](https://www.tamtam.ai/c/black-swan-data) (blackswan.com)
A SaaS company using AI and social data to predict consumer behavior accurately, empowering leading CPG companies to make confident decisions faster | Market Research | π¬π§ London | 136 | 2011 |
| 28 | [Researchbods](https://www.tamtam.ai/c/researchbods) (strat7.com)
This company offers real-time consumer insight solutions to enhance decision-making, helping clients find their competitive edge in the market | Market Research | π¬π§ London | 124 | 2011 |
| 29 | [Attest](https://www.tamtam.ai/c/attest) (askattest.com)
consumer research platform combining technology and expertise to provide fast, trustworthy insights from millions of consumers across multiple countries | Market Research | π¬π§ London | 116 | 2015 |
| 30 | [IDC Europe](https://www.tamtam.ai/c/idc-europe) (idc.com)
Provides market intelligence, advisory services, and events for information technology, telecommunications, and consumer technology to help make fact-based decisions. | Market Research | π¬π§ London | 92 | |
## 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 London
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## The same list elsewhere in United Kingdom
- [Market Research companies in the United Kingdom](https://www.tamtam.ai/l/market-research-companies-united-kingdom) (48)
## The same list elsewhere
- [Market Research companies in the world](https://www.tamtam.ai/l/market-research-companies-in-the-world) (423)
- [Market Research companies in Europe](https://www.tamtam.ai/l/market-research-companies-in-europe) (231)
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Source: https://www.tamtam.ai/l/market-research-companies-london