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Company lists · Data refreshed September 2026

Top 25 B2B market sizing firms based in the United Kingdom

Compiled by the RevenueBase Data Team Data refreshed Sep 2, 2026 210 companies tracked

RevenueBase identified 210 B2B market sizing firms headquartered in the United Kingdom as of September 2026 and tracks 3,655 professional contacts across them, including 1,441 with verified work emails and 326 with mobile numbers. London is the largest hub.

This list covers B2B market sizing firms headquartered in the United Kingdom, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, how directly it supports the match, and when it was last checked. Data refreshed September 2, 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 Match evidence on every row Refreshed Sep 2, 2026 86% judged on-target in blind review
210Companies
3,655Contacts tracked
1,441Verified emails
326Mobile numbers
Unlock all 210 companies Free signup · no credit card · 500 free credits

The 25 largest B2B market sizing firms based in the United Kingdom

Ranked by team size
Top 25 of 210 B2B market sizing firms based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 2, 2026. Evidence rates how directly each company's own description names B2B market sizing firms: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#CompanyHeadquartersEmployeesContacts
1
ArancaIndirect evidence
London, United Kingdom501-1,000741

“We are a global research analytics and advisory firm with over 20 years of experience in helping organizations take strategic business and investment decisions fearlessly and with…”

Source: company website · checked Sep 2, 2026
2
The Smart CubeIndirect evidence
London, United Kingdom501-1,000717

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

Source: company website · checked Sep 2, 2026
3
SavantaPartial evidence
London, United Kingdom501-1,000469

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

Source: company website · checked Sep 2, 2026
4
VerdantixIndirect evidence
London, United Kingdom51-200127

“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…”

Source: company website · checked Sep 2, 2026
5
BVA BdrcIndirect evidence
London, United Kingdom51-200104

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

Source: company website · checked Sep 2, 2026
6
marketresearch.comPartial evidence
London, United Kingdom51-20080

“MarketResearch.com is a leading provider of global market intelligence products and services.”

Source: company website · checked Sep 2, 2026
7
Cognition SolutionsPartial evidence
London, United Kingdom201-50079

“With 26+ years of experience and more than 500+ professionals, Cognition empowers growth for B2B organizations by delivering reliable data, intelligence, and actionable insights…”

Source: company website · checked Sep 2, 2026
8
2cvIndirect evidence
London, United Kingdom51-20075

“Not just insight.”

Source: company website · checked Sep 2, 2026
9
SourceIndirect evidence
London, United Kingdom11-5054

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

Source: company website · checked Sep 2, 2026
10
Explain Market ResearchPartial evidence
Newcastle Upon Tyne, United Kingdom51-20054

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

Source: company website · checked Sep 2, 2026
11
Vanson BourneIndirect evidence
Newbury, United Kingdom11-5043

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

Source: company website · checked Sep 2, 2026
12
Sapio ResearchStrong evidence
London, United Kingdom11-5040

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

Source: company website · checked Sep 2, 2026
13
Precision Business InsightsPartial evidence
London, United Kingdom51-20037

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

Source: company website · checked Sep 2, 2026
14
Diakob EnterprisesIndirect evidence
London, United Kingdom51-20036

“Imagine truly understanding what your potential customers think, feel, and need.”

Source: company website · checked Sep 2, 2026
15
Global Business Research GBRPartial evidence
London, United Kingdom11-5032

“GBR is a full-service international B2B research and business advisory firm headquartered in London.”

Source: company website · checked Sep 2, 2026
16
Juniper ResearchStrong evidence
Basingstoke, United Kingdom11-5029

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

Source: company website · checked Sep 2, 2026
17
Inventive Research GroupIndirect evidence
London, United Kingdom51-20029

“We connect insight-driven organizations with the people who move industries forward.”

Source: company website · checked Sep 2, 2026
18
Research In FinancePartial evidence
London, United Kingdom11-5026

“Research In Finance is an award winning market research and business information provider that specialises in the financial services market.”

Source: company website · checked Sep 2, 2026
19
Vision ONE ResearchIndirect evidence
London, United Kingdom11-5018

“Vision One Research helps businesses and decision-makers connect with customers to make better decisions and inform business strategy.”

Source: company website · checked Sep 2, 2026
20
3j Market Research LLPPartial evidence
London, United Kingdom11-5018

“3J Market Research is a global Research and Consulting firm offering services to Market Research firms, Management Consulting firms, Healthcare, Pharmaceuticals, Advertising…”

Source: company website · checked Sep 2, 2026
21
Bonafide MarketingStrong evidence
Birmingham, United Kingdom11-5016

“We're an agency of sector experts with a perfect balance of market intelligence, commercial know-how, and strategic expertise in connecting B2B organisations with high-value…”

Source: company website · checked Sep 2, 2026
22
Instinct And ReasonPartial evidence
London, United Kingdom11-5015

“Instinct and Reason was established in 2002 as a market research and strategic consultancy with offices in Australia (Sydney, Canberra, Darwin), U.K (London), and Canada (Kelowna).”

Source: company website · checked Sep 2, 2026
23
RED Brick ResearchPartial evidence
Tunbridge Wells, United Kingdom11-5015

“Red Brick Research is a UK-based market research agency with a proven track record for providing high quality research and advisory services to business, consumer and third sector…”

Source: company website · checked Sep 2, 2026
24
Investment ReportsPartial evidence
London, United Kingdom11-5014

“Investment Reports is dedicated to bringing you comprehensive market intelligence in key business sectors across the world - now in partnership with Newsweek.”

Source: company website · checked Sep 2, 2026
25
Globaldata AcademiaIndirect evidence
Manchester, United Kingdomn/a14

“In an increasingly fast-moving, complex, and uncertain world, it’s never been harder for organizations to predict and navigate the future.”

Source: company website · checked Sep 2, 2026

Showing 25 of 210 B2B market sizing firms based in the United Kingdom

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B2B market sizing firms based in the United Kingdom at a glance

As of Sep 2, 2026
11-50Median size (employees)
LondonLargest hub · 104 HQs
326Contacts with mobile numbers
Sep 2, 2026Data refreshed

Companies by employee count

1-10
101
11-50
55
51-200
30
201-500
13
501-1,000
4
1,001-5,000
1
5,001-10,000
1

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among B2B market sizing firms, so some rows will be adjacent to the category rather than pure plays. The description and evidence rating on every row are there so you can check each match yourself.

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
Companies headquartered in the United Kingdom whose own description of what they do matches “B2B market sizing firms”. Matching reads each company's description, not its industry code or its name.
What we exclude
Companies whose own description does not clearly place them among B2B market sizing firms, and records with no verified work email. Companies headquartered outside United Kingdom are excluded even when they keep an office there.
Match quality
In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and an evidence rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 1,441 across the full list. 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 2, 2026. Lists refresh periodically as the graph is re-checked.
Corrections
Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

B2B market sizing firms by metro

Frequently asked

How many B2B market sizing firms are there based in the United Kingdom?

RevenueBase identified 210 B2B market sizing firms headquartered in the United Kingdom as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Aranca, headquartered in London, tops this list with the largest team on record.

Which city has the most B2B market sizing firms?

London leads with 104 headquartered companies, followed by Manchester (4) and Glasgow (3).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 1,441 verified decision-maker contacts tracked across these 210 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 2, 2026.

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Related lists

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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.

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