Company lists · Data refreshed September 2026

Top 25 B2B market sizing firms based in London, United Kingdom

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

Compiled by the RevenueBase Data Team Data refreshed Sep 3, 2026 104 companies tracked

RevenueBase identified 104 B2B market sizing firms headquartered in London, United Kingdom as of September 2026 and tracks 3,144 professional contacts across them, including 1,290 with verified work emails and 300 with mobile numbers. London is the largest hub.

This list covers B2B market sizing firms headquartered in London, 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 3, 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 3, 2026 86% judged on-target in blind review

104Companies

3,144Contacts tracked

1,290Verified emails

300Mobile numbers

Unlock all 104 companies Free signup · no credit card · 500 free credits

The 25 largest B2B market sizing firms based in London, United Kingdom

Ranked by team size

Top 25 of 104 B2B market sizing firms based in London, United Kingdom, ranked by team size, largest first. Data refreshed Sep 3, 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.
#	Company	Headquarters	Employees	Contacts
1	ArancaIndirect evidence	London, United Kingdom	501-1,000	741
	“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 3, 2026
2	The Smart CubeIndirect evidence	London, United Kingdom	501-1,000	717
	“We provide high performing intelligence that answers critical business questions for leading companies around the world.” Source: company website · checked Sep 3, 2026
3	SavantaPartial evidence	London, United Kingdom	501-1,000	469
	“Savanta is a fast-growing data, market research and advisory company.” Source: company website · checked Sep 3, 2026
4	VerdantixIndirect evidence	London, United Kingdom	51-200	127
	“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 3, 2026
5	BVA BdrcIndirect evidence	London, United Kingdom	51-200	104
	“BVA BDRC is now part of Ipsos, and using the Ipsos brand name, following acquisition in June 2025.” Source: company website · checked Sep 3, 2026
6	marketresearch.comPartial evidence	London, United Kingdom	51-200	80
	“MarketResearch.com is a leading provider of global market intelligence products and services.” Source: company website · checked Sep 3, 2026
7	Cognition SolutionsPartial evidence	London, United Kingdom	201-500	79
	“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 3, 2026
8	2cvIndirect evidence	London, United Kingdom	51-200	75
	“Not just insight.” Source: company website · checked Sep 3, 2026
9	SourceIndirect evidence	London, United Kingdom	11-50	54
	“In uncertain times, professional services firms can’t rely on instinct alone.” Source: company website · checked Sep 3, 2026
10	Sapio ResearchStrong evidence	London, United Kingdom	11-50	40
	“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 3, 2026
11	Precision Business InsightsPartial evidence	London, United Kingdom	51-200	37
	“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 3, 2026
12	Diakob EnterprisesIndirect evidence	London, United Kingdom	51-200	36
	“Imagine truly understanding what your potential customers think, feel, and need.” Source: company website · checked Sep 3, 2026
13	Global Business Research GBRPartial evidence	London, United Kingdom	11-50	32
	“GBR is a full-service international B2B research and business advisory firm headquartered in London.” Source: company website · checked Sep 3, 2026
14	Inventive Research GroupIndirect evidence	London, United Kingdom	51-200	29
	“We connect insight-driven organizations with the people who move industries forward.” Source: company website · checked Sep 3, 2026
15	Research In FinancePartial evidence	London, United Kingdom	11-50	26
	“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 3, 2026
16	Vision ONE ResearchIndirect evidence	London, United Kingdom	11-50	18
	“Vision One Research helps businesses and decision-makers connect with customers to make better decisions and inform business strategy.” Source: company website · checked Sep 3, 2026
17	3j Market Research LLPPartial evidence	London, United Kingdom	11-50	18
	“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 3, 2026
18	Instinct And ReasonPartial evidence	London, United Kingdom	11-50	15
	“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 3, 2026
19	Investment ReportsPartial evidence	London, United Kingdom	11-50	14
	“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 3, 2026
20	Fairfield Market ResearchPartial evidence	London, United Kingdom	11-50	12
	“At Fairfield Market Research we create insightful reports that are equipped with the latest and most relevant market information and analysis.” Source: company website · checked Sep 3, 2026
21	The Niche Research TNRIndirect evidence	London, United Kingdom	51-200	12
	“The Nice Research A worldwide pacesetter in analytics, research and advisory that can assist you to renovate your business and modify your approach.” Source: company website · checked Sep 3, 2026
22	Smart Move VenturesPartial evidence	London, United Kingdom	11-50	10
	“We are a dynamic team of researchers specialized in making data-driven decisions, primarily for B2B and B2C industry.” Source: company website · checked Sep 3, 2026
23	DigitgapsPartial evidence	London, United Kingdom	51-200	6
	“digitGaps is a California based global market intelligence company preferred by Fortune Global 500 and a partner of choice by Forbes Global and Global RepTrak 100.” Source: company website · checked Sep 3, 2026
24	Strive InsightIndirect evidence	London, United Kingdom	11-50	5
	“We are a research and insight agency built to help your business find and release commercial opportunities.” Source: company website · checked Sep 3, 2026
25	SA Market InsightsPartial evidence	London, United Kingdom	11-50	4
	“SA Market Insights (affectionately known as SAMI) is a full-service market research agency, with a twist.” Source: company website · checked Sep 3, 2026

Showing 25 of 104 B2B market sizing firms based in London, United Kingdom

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 1,290 reachable decision-makers.

Free signup · no credit card

See all 104 companies

B2B market sizing firms based in London, United Kingdom at a glance

As of Sep 3, 2026

11-50Median size (employees)

LondonLargest hub · 104 HQs

300Contacts with mobile numbers

Sep 3, 2026Data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

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 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 London, 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 London 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, 1,290 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 3, 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 in the United Kingdom

B2B market sizing firms in London104

Frequently asked

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

RevenueBase identified 104 B2B market sizing firms headquartered in London, 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 1,290 verified decision-maker contacts tracked across these 104 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 3, 2026.

Ready to reach these companies? Verified emails and direct dials for all 104 B2B market sizing firms based in London, United Kingdom. Start with a free account, no credit card.

Get the full list

Related lists

B2B market sizing firms by geography

Browse the directory

Browse: Companies home · B2B market sizing firms in United Kingdom · All United Kingdom lists · All B2B market sizing firms lists · New lists

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.