Top Market Research Agencies in the UK (2026 Guide)

Choosing a market research company is rarely just a matter of comparing day rates or client lists. It is a decision about who gets access to the customer evidence behind a much bigger commercial choice, and getting it wrong is expensive in ways that go beyond the invoice.

The UK research market ranges from multinational data businesses with tens of thousands of staff to small, senior-led agencies where the person who takes the brief is the same person who runs the fieldwork and presents the findings. Below, we look at ten of the leading market research companies and agencies operating in the UK today, what each is best suited to, typical costs, and the questions worth asking before any of them get a brief.

The top 10 market research companies and agencies in the UK

1. Brandspeak (London, working across more than 40 international markets)

Best for: Organisations that need research to change a specific commercial decision, not just describe the market.

Brandspeak is a market research and brand agency with over 20 years' experience across consumer and business markets. Every project is led by senior, director-level consultants from brief to delivery, spanning qualitative and quantitative research through to brand tracking via its proprietary GrowthTrack platform. Particularly strong for brand tracking, customer segmentation and new product development work where the output needs to change a decision, not just report a number.

2. Ipsos UK (London, operating in more than 90 countries)

Best for: Large multinational or public sector organisations that need statistically robust research run consistently across many markets.

One of the world's largest research groups, Ipsos combines global infrastructure with deep experience in polling, public opinion and advanced analytics. Its scale gives it access to datasets and methodological resources smaller agencies cannot match, which is why it remains a default choice for government bodies and large multinationals.

3. Kantar (London, global)

Best for: Large consumer brands that need to track brand health and media performance on an ongoing basis.

Kantar is one of the biggest names in FMCG research, media measurement and brand equity tracking, working with a large share of the world's biggest advertisers. Its consumer panel data and long-running tracking studies suit brands managing continuous measurement rather than a one-off project.

4. Savanta (London, UK-wide)

Best for: Organisations that need fast, cost-efficient research at volume, including B2B and public sector audiences.

Savanta pairs large proprietary panels with a tech-enabled delivery model built for speed. Its tracking products suit teams that need frequent, comparable data rather than a single deep-dive study.

5. Walnut Unlimited (London and Winchester)

Best for: Brands that need to understand the emotional or subconscious drivers behind a decision, particularly in advertising and communications testing.

Part of Accenture Song, Walnut Unlimited applies behavioural science and neuroscience techniques to get beyond what people say they think to what is actually driving their behaviour. That makes it well suited to creative and communications testing, where stated preference alone is not a reliable guide.

6. Basis (London and the US)

Best for: Organisations facing a strategic decision, such as pricing or positioning, that needs senior interpretation rather than raw data.

Basis combines research with strategic and analytical input aimed at leadership-level decisions, spanning brand tracking, pricing and B2B studies. Its consultative positioning sits close to Brandspeak's own.

7. 2CV (London, Los Angeles, San Francisco and Singapore)

Best for: Brands running research or creative testing across multiple, culturally distinct markets.

With more than 30 years in international qualitative research, 2CV blends cultural insight with creative testing and innovation work across a genuinely global footprint. A strong option where cultural nuance matters as much as the headline finding.

8. Attest (London)

Best for: Teams that want to run their own consumer research quickly, without commissioning a full agency project.

Attest is a self-serve research platform giving in-house teams direct access to consumer panels across dozens of countries, often within 48 hours. It suits frequent, lighter-touch research rather than complex, senior-led studies.

9. YouGov (London, international)

Best for: Organisations that want continuous public opinion or brand health tracking rather than a one-off study.

Built on one of the UK's largest research panels, YouGov's tracking products deliver always-on brand measurement and historical benchmarking at scale, making it a familiar name for continuous tracking work.

10. Mustard (Manchester, UK-wide)

Best for: SMEs and mid-sized organisations outside London wanting a hands-on, commercially minded research partner.

Mustard is a full-service qualitative and quantitative agency based outside the capital, covering customer experience, segmentation and NPD work. A regional alternative to London-headquartered agencies, without a reduction in scope.

How much does market research cost in the UK?

Costs vary enormously depending on scope, methodology and geography, but the figures below give a realistic starting point for budgeting in the UK market.

Type of research	Typical UK cost
Small qualitative studies	£5,000–£15,000
Qualitative programmes	£10,000–£30,000
UK quantitative surveys	£10,000–£50,000+
International studies	£50,000–£250,000+
Brand tracking programmes (annual)	£20,000–£150,000+

How to choose the right market research partner

Start with the business decision the research needs to inform, not the methodology. A senior team that stays involved from the brief through to the final recommendation will generally deliver more useful outputs than a larger agency that hands the work to a junior delivery team once the pitch is won. It is also worth checking how a shortlisted agency connects insight to action, ask to see an example of how a past project actually changed what a client did, rather than simply what it found.

Key questions to ask before you commission research

• How will this research change what we do as a business?
• Who will actually run the project day to day, and how senior are they?
• Can you show an example of research that changed a client's decision, not just described their market?
• What would make this project fail, and how would we know early?
• How do you price the work, and what happens if the scope changes partway through?

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Ready to talk through a research brief? Contact Brandspeak.