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.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
Kantarkantar.com
Global leader in marketing data and analytics with deep expertise, innovative technology, and insights to help clients understand people and drive growth worldwide |
24,976 | |||
| 2 |
YouGovyougov.com
An international online research and analytics technology group providing unparalleled consumer insights for brands, media owners, and agencies worldwide |
4,691 | |||
| 3 |
Worldpanelworldpanelbynumerator.com
Experts in global shopper and consumer behavior providing analytics for retail and marketing strategies, enabling smarter decisions for a better world |
3,437 | |||
| 4 |
Tolunatolunacorporate.com
Global leader providing advanced technology and comprehensive solutions for data-driven market research, leveraging AI and extensive global panels. |
3,218 | |||
| 5 |
Silverlight Researchsilverlightresearch.com
Provides compliant access to independent industry experts for institutional investors, private equity firms, and corporate strategy teams for due diligence and market intelligence. |
2,643 | |||
| 6 |
Euromonitor Internationaleuromonitor.com
Provides comprehensive global data analytics and research on markets, industries, economies, and consumers to support strategic business growth decisions. |
2,176 | |||
| 7 |
Ipsos in the UKipsos.com
A global research firm passionate about understanding people, brands, and society, providing insightful knowledge to inspire impactful decision-making for clients |
1,697 | |||
| 8 |
Mintelmintel.com
This company provides market intelligence through research, analysis, product insights, and competitive intelligence to help businesses navigate the consumer landscape and grow |
1,638 | |||
| 9 |
FACEpulsarplatform.com
A company has merged with Pulsar for global expansion Visit the press release for more information Follow Pulsar Platform on LinkedIn |
734 | |||
| 10 |
MMR Researchmmr-research.com
This company specializes in designing solutions for a variety of industries to create engaging brands that resonate with consumers |
657 | |||
| 11 |
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. |
582 | |||
| 12 |
STRAT7strat7.com
Helps clients win at change, providing real-time insights into customer behavior, equipping brands with actionable strategies for customer-centric growth. |
465 | |||
| 13 |
Savantasavanta.com
A fast-growing data, market research, and advisory company providing tailored solutions, data analysis, and intelligence products to help clients make better decisions |
462 | |||
| 14 |
IFF Researchiffresearch.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 |
436 | |||
| 15 |
MRSmrs.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. |
404 | |||
Want more companies than this list?This page shows the largest ones only. Connect to Tamtam to see every company that matches, filter by size, industry or growth, and reach their decision-makers. | |||||
| 16 |
RONIN Internationalronin.com
Independent B2B market research company specializing in business, healthcare, and tech studies, working globally across the world in over forty languages. |
383 | |||
| 17 |
The Business Research Companythebusinessresearchcompany.com
Market Intelligence company specializing in company, market, and consumer research across various industries with a global team of research experts |
318 | |||
| 18 |
Research Partnershipinizio.com
A world-leading market research partner in health and life sciences providing custom and syndicated research for actionable insights and strategic decision-making |
267 | |||
| 19 |
System1system1group.com
The company offers solutions to predict commercial success of ads and ideas, measure brand impact, and provide expert guidance for improving effectiveness |
231 | |||
| 20 |
Hall & Partnershallandpartners.com
An insight agency blending creativity with science to uncover unique human truths tailored to individual brands for strategic marketing decision-making |
220 | |||
| 21 |
B2B Internationalb2binternational.com
A global B2B market research agency offering services like branding, competitive intelligence, customer satisfaction, and market entry to help companies succeed internationally |
213 | |||
| 22 |
RFI Globalrfi.global
RFI Global is a global data and insights company specializing in financial services, providing actionable insights to clients worldwide |
207 | |||
| 23 |
Kudos Researchronin.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 |
195 | |||
| 24 |
VERVEvervevero.com
A global insights consultancy specializing in Human, Cultural, and Artificial Intelligence to provide dynamic solutions for any business challenge |
176 | |||
| 25 | 175 | ||||
| 26 |
Europaneleuropanel.com
Europanel™ offers global consumer behavior insights from top marketing companies to inspire growth strategies with high-quality consumer panel data |
151 | |||
| 27 |
Black Swan Datablackswan.com
A SaaS company using AI and social data to predict consumer behavior accurately, empowering leading CPG companies to make confident decisions faster |
136 | |||
| 28 |
Researchbodsstrat7.com
This company offers real-time consumer insight solutions to enhance decision-making, helping clients find their competitive edge in the market |
124 | |||
| 29 |
Attestaskattest.com
consumer research platform combining technology and expertise to provide fast, trustworthy insights from millions of consumers across multiple countries |
116 | |||
| 30 |
IDC Europeidc.com
Provides market intelligence, advisory services, and events for information technology, telecommunications, and consumer technology to help make fact-based decisions. |
92 | |||
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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.
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