Company lists · Data refreshed September 2026

Top 25 Market sizing firms based in the United Kingdom

RevenueBase identified 411 company matches for market sizing firms associated with the United Kingdom as of September 2026 and tracks 8,086 professional contacts across them, including 2,658 with verified work emails. London is the largest hub.

This list covers company matches for market sizing firms associated with the United Kingdom, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 20, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 20, 2026 How this list was built
411Companies
8,086Contacts tracked
2,658Verified emails
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The 25 largest market sizing firms based in the United Kingdom

Ranked by team size
Top 25 of 411 company matches for market sizing firms based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 20, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchLondon, United KingdomHQ recorded Sep 20, 20261,001-5,0001,475 contacts →

Exact match

“At Mintel, we empower businesses to navigate the future with confidence.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
2Exact matchLondon, United KingdomHQ recorded Sep 20, 2026501-1,000702 contacts →

Exact match

“We provide high performing intelligence that answers critical business questions for leading companies around the world.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
3Exact matchLondon, United KingdomHQ recorded Sep 20, 2026501-1,000651 contacts →

Exact match

“Infiniti Research is a leading provider of market intelligence and customer intelligence solutions with 20+ years’ experience spanning across 20+ industries.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
4Exact matchLondon, United KingdomHQ recorded Sep 20, 2026501-1,000464 contacts →

Exact match

“Savanta is a fast-growing data, market research and advisory company.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
5Exact matchLondon, United KingdomHQ recorded Sep 20, 202651-200420 contacts →

Exact match

“Established in 1965, IFF is a social and market research agency who helps people make better informed decisions.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
6Exact matchLondon, United KingdomHQ recorded Sep 20, 202651-200211 contacts →

Exact match

“RFI Global is the only global data and insights company focusing exclusively on financial services.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
7Exact matchLondon, United KingdomHQ recorded Sep 20, 202651-200178 contacts →

Exact match

“The world’s most experienced B2B market research company.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
8Exact matchLondon, United KingdomHQ recorded Sep 20, 202651-200159 contacts →

Exact match

“MTM is the trusted insight and strategy partner tackling the biggest challenges for the world's biggest brands.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
9Exact matchLondon, United KingdomHQ recorded Sep 20, 202651-200150 contacts →

Exact match

“STRAT7 Incite is a strategic research and planning consultancy.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
10Exact matchLondon, United KingdomHQ recorded Sep 20, 2026501-1,000131 contacts →

Exact match

“EMIS, an ISI Markets product line, is the leading provider of reliable industry and company intelligence on fast-growing markets.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
11Exact matchLondon, United KingdomHQ recorded Sep 20, 202651-200125 contacts →

Exact match

“Verdantix is an independent research and advisory firm that serves a global client base consisting of the world’s most innovative corporations, technology and services vendors…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
12Exact matchLondon, United KingdomHQ recorded Sep 20, 202651-200115 contacts →

Exact match

“Founded in January 2015 and based in London, Ampere Analysis is a fast-growing analyst firm with an experienced team of sector-leading industry analysts specialising in media…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
13Exact matchLondon, United KingdomHQ recorded Sep 20, 202651-200106 contacts →

Exact match

“Researchbods delivers insight that drives action for ambitious brands.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
14Exact matchLondon, United KingdomHQ recorded Sep 20, 202651-200105 contacts →

Exact match

“BVA BDRC is now part of Ipsos, and using the Ipsos brand name, following acquisition in June 2025.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
15Exact matchLondon, United KingdomHQ recorded Sep 20, 202651-200104 contacts →

Exact match

“Opinium is a multi-award-winning strategic insight agency, twice recognised Market Research Society (MRS)'Agency of the Year' in the past five years.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
16Exact matchLondon, United KingdomHQ recorded Sep 20, 202651-20076 contacts →

Exact match

“Not just insight.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
17Exact matchLondon, United KingdomHQ recorded Sep 20, 2026201-50069 contacts →

Exact match

“MASMI is a full-service international market research company with broad industry expertise specialising in delivering research insights and decision support, based on state of…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
18Exact matchLondon, United KingdomHQ recorded Sep 20, 202611-5057 contacts →

Exact match

“In uncertain times, professional services firms can’t rely on instinct alone.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
19Exact matchNewcastle Upon Tyne, United KingdomHQ recorded Sep 20, 202651-20054 contacts →

Exact match

“Explain is a market research agency that is committed to creating insightful and dynamic partnerships that deliver powerful and intelligent results.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
20Exact matchNewbury, United KingdomHQ recorded Sep 20, 202611-5044 contacts →

Exact match

“Your brand isn’t generic and neither is our research.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
21Exact matchLondon, United KingdomHQ recorded Sep 20, 202611-5040 contacts →

Exact match

“We’re a Certified B Corp™, full-service market research agency based in London, and we're experts in B2B & Technology market research.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
22Exact matchLondon, United KingdomHQ recorded Sep 20, 202651-20037 contacts →

Exact match

“Precision Business Insights is one of the leading market research and business consulting firm, which follow a holistic approach to solve the client needs.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
23Exact matchLondon, United KingdomHQ recorded Sep 20, 202611-5036 contacts →

Exact match

“Strategic Market Research for Pharma and Biotech Experts at researching late-stage oncology, rare and life-limiting diseases, targeted and precision medicine.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
24Exact matchMilnthorpe, United KingdomHQ recorded Sep 20, 202611-5035 contacts →

Exact match

“Markets grow, consumers evolve, and brands must fight to stay at the forefront of industry.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
25Exact matchBasingstoke, United KingdomHQ recorded Sep 20, 202611-5031 contacts →

Exact match

“Juniper Research provides market sizing and forecasting, competitive analysis, strategic assessment, and business modelling to the world’s leading organisations and innovators…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase

Showing 25 of 411 market sizing firms based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 2,658 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Market sizing firms based in the United Kingdom at a glance

As of Sep 20, 2026
32.9%Verified-email coverage
19.7Average contacts per company
1-10Median size (employees)
48.2%Largest-city concentration · London
Sep 20, 2026Page data refreshed

Companies by employee count

1-10
260
11-50
88
51-200
43
201-500
10
501-1,000
5
1,001-5,000
2
5,001-10,000
1

Email recency for this list is measured worldwide rather than for United Kingdom, so it is reported there. Company counts and contact totals on this page are exact for United Kingdom, over 411 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with the United Kingdom whose business descriptions match “market sizing firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every displayed company carries at least one verified work email. RevenueBase tracks 2,658 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on September 20, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “market sizing firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many market sizing firms are there based in the United Kingdom?

RevenueBase identified 411 company matches for market sizing firms associated with the United Kingdom as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Mintel tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most market sizing firms?

London leads with 198 company records, followed by Manchester (8) and Leeds (6).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 2,658 professional contacts with verified work emails tracked across these 411 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 20, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.