Company lists · Data refreshed September 2026

Top 25 B2B market sizing firms based in the United Kingdom

Name: B2B market sizing firms based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

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, its RevenueBase Smart Search rating, 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 Smart Search, 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 Smart Search rating on every row Refreshed Sep 2, 2026 86% judged on-target in blind review

210Companies

3,655Contacts tracked

1,441Verified emails

326Mobile numbers

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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. RevenueBase Smart Search rates how each company's information relates to B2B market sizing firms: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Aranca	Indirect evidence	London, United Kingdom	501-1,000	741 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 2, 2026
2	The Smart Cube	Indirect evidence	London, United Kingdom	501-1,000	717 contacts →
	Indirect evidence “We provide high performing intelligence that answers critical business questions for leading companies around the world.” Source: RevenueBase Database · checked Sep 2, 2026
3	Savanta	Partial evidence	London, United Kingdom	501-1,000	469 contacts →
	Partial evidence “Savanta is a fast-growing data, market research and advisory company.” Source: RevenueBase Database · checked Sep 2, 2026
4	Verdantix	Indirect evidence	London, United Kingdom	51-200	127 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 2, 2026
5	BVA Bdrc	Indirect evidence	London, United Kingdom	51-200	104 contacts →
	Indirect evidence “BVA BDRC is now part of Ipsos, and using the Ipsos brand name, following acquisition in June 2025.” Source: RevenueBase Database · checked Sep 2, 2026
6	marketresearch.com	Partial evidence	London, United Kingdom	51-200	80 contacts →
	Partial evidence “MarketResearch.com is a leading provider of global market intelligence products and services.” Source: RevenueBase Database · checked Sep 2, 2026
7	Cognition Solutions	Partial evidence	London, United Kingdom	201-500	79 contacts →
	Partial evidence “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: RevenueBase Database · checked Sep 2, 2026
8	2cv	Indirect evidence	London, United Kingdom	51-200	75 contacts →
	Indirect evidence “Not just insight.” Source: RevenueBase Database · checked Sep 2, 2026
9	Source	Indirect evidence	London, United Kingdom	11-50	54 contacts →
	Indirect evidence “In uncertain times, professional services firms can’t rely on instinct alone.” Source: RevenueBase Database · checked Sep 2, 2026
10	Explain Market Research	Partial evidence	Newcastle Upon Tyne, United Kingdom	51-200	54 contacts →
	Partial evidence “Explain is a market research agency that is committed to creating insightful and dynamic partnerships that deliver powerful and intelligent results.” Source: RevenueBase Database · checked Sep 2, 2026
11	Vanson Bourne	Indirect evidence	Newbury, United Kingdom	11-50	43 contacts →
	Indirect evidence “Your brand isn’t generic and neither is our research.” Source: RevenueBase Database · checked Sep 2, 2026
12	Sapio Research	Strong evidence	London, United Kingdom	11-50	40 contacts →
	Strong evidence “We’re a Certified B Corp™, full-service market research agency based in London, and we're experts in B2B & Technology market research.” Source: RevenueBase Database · checked Sep 2, 2026
13	Precision Business Insights	Partial evidence	London, United Kingdom	51-200	37 contacts →
	Partial evidence “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: RevenueBase Database · checked Sep 2, 2026
14	Diakob Enterprises	Indirect evidence	London, United Kingdom	51-200	36 contacts →
	Indirect evidence “Imagine truly understanding what your potential customers think, feel, and need.” Source: RevenueBase Database · checked Sep 2, 2026
15	Global Business Research GBR	Partial evidence	London, United Kingdom	11-50	32 contacts →
	Partial evidence “GBR is a full-service international B2B research and business advisory firm headquartered in London.” Source: RevenueBase Database · checked Sep 2, 2026
16	Juniper Research	Strong evidence	Basingstoke, United Kingdom	11-50	29 contacts →
	Strong evidence “Juniper Research provides market sizing and forecasting, competitive analysis, strategic assessment, and business modelling to the world’s leading organisations and innovators…” Source: RevenueBase Database · checked Sep 2, 2026
17	Inventive Research Group	Indirect evidence	London, United Kingdom	51-200	29 contacts →
	Indirect evidence “We connect insight-driven organizations with the people who move industries forward.” Source: RevenueBase Database · checked Sep 2, 2026
18	Research In Finance	Partial evidence	London, United Kingdom	11-50	26 contacts →
	Partial evidence “Research In Finance is an award winning market research and business information provider that specialises in the financial services market.” Source: RevenueBase Database · checked Sep 2, 2026
19	Vision ONE Research	Indirect evidence	London, United Kingdom	11-50	18 contacts →
	Indirect evidence “Vision One Research helps businesses and decision-makers connect with customers to make better decisions and inform business strategy.” Source: RevenueBase Database · checked Sep 2, 2026
20	3j Market Research LLP	Partial evidence	London, United Kingdom	11-50	18 contacts →
	Partial evidence “3J Market Research is a global Research and Consulting firm offering services to Market Research firms, Management Consulting firms, Healthcare, Pharmaceuticals, Advertising…” Source: RevenueBase Database · checked Sep 2, 2026
21	Bonafide Marketing	Strong evidence	Birmingham, United Kingdom	11-50	16 contacts →
	Strong evidence “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: RevenueBase Database · checked Sep 2, 2026
22	Instinct And Reason	Partial evidence	London, United Kingdom	11-50	15 contacts →
	Partial evidence “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: RevenueBase Database · checked Sep 2, 2026
23	RED Brick Research	Partial evidence	Tunbridge Wells, United Kingdom	11-50	15 contacts →
	Partial evidence “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: RevenueBase Database · checked Sep 2, 2026
24	Investment Reports	Partial evidence	London, United Kingdom	11-50	14 contacts →
	Partial evidence “Investment Reports is dedicated to bringing you comprehensive market intelligence in key business sectors across the world - now in partnership with Newsweek.” Source: RevenueBase Database · checked Sep 2, 2026
25	Globaldata Academia	Indirect evidence	Manchester, United Kingdom	n/a	14 contacts →
	Indirect evidence “In an increasingly fast-moving, complex, and uncertain world, it’s never been harder for organizations to predict and navigate the future.” Source: RevenueBase Database · checked Sep 2, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: B2B market sizing firms. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names B2B market sizing firms.
Partial evidence: Its own public description names part of B2B market sizing firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name B2B market sizing firms. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

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

39.4%Verified-email coverage

8.9%Mobile-number coverage

17.4Average contacts per company

11-50Median size (employees)

49.5%Largest-city concentration · London

Sep 2, 2026Page data refreshed

Companies by employee count

1-10

101

11-50

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

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 RevenueBase Smart Search 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 Smart Search, 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.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names B2B market sizing firms), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
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 its RevenueBase Smart Search 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

B2B market sizing firms in London104

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names B2B market sizing firms, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

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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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 Smart Search, 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.